RE: [Repeater-Builder] OT: HT1250LS question
Limited amount of channels in conventional mode 16 if I remember, but yes you can. - Original Message - From: kk2ed To: Repeater-Builder@yahoogroups.com Sent: 11/5/2008 2:34:57 PM Subject: [Repeater-Builder] OT: HT1250LS question Sorry for being off topic, but I was hoping someone here was familiar enought with the Motorola HT1250 series to answer a question or two - 1. Can I use an HT1250LS as a conventional radio? If I use it strictly as a conventional radio, can I get more than the 16 channels I see mentioned in the literature? 2. If not, can it be re-flashed as a standard HT1250 for 128 channels? 3. What is a clean HT1250LS UHF 403-470 full keypad with charger worth? I'm looking for a UHF HT1250 full keypad, but found what appears to be a good deal on an HT1250LS, and wanted to know the pros/cons before I buy it. I had a regular HT1250 a few years ago but sold it, and now wish I kept it! Thanks Eric KE2D
[Repeater-Builder] Re: Antenna recommendations 220
I have had good luck with 222 MHz Ringo Ranger. It is a little heavier construction and has a reasonably flat pattern. Bill Harwood W5WH
[Repeater-Builder] Motorola MICOR Receiver enclosure questions
I recently picked up a 72-MHz MICOR receiver off of the big auction site (won't mention the name lest someone get all [EMAIL PROTECTED]!).. This MICOR receiver appears to be in a 3-1/2 high MSF-5000 series box, with the spring-loaded releases on the black front panel. It has a squelch control and an RJ-series jack on the front panel, and the rear panel has a BNC antenna jack, along with a 10-pin male plug. The Motorola P/N stamped on the rear is TRC1072AB, which might be just something like the rear panel number and not the complete assembly number. Does anyone know what series station this receiver was used in? I'd like to find the hookup info for it, and find a part number the 10-pin matching connector. I have plenty of actual MICOR receiver info, for receivers of all bands, and would like to use this as a UHF control receiver for a 2-Meter repeater. Repeated request for info emails to the original seller have not been responded to, so Im trying here. One person in our shop felt it might be part of an MSF-5000 sereis paging station, with this 72-MHZ receiver used for control (maybe similar to a 330W MICOR PURC station on 42 MHz with its 72-MHz receiver, which I have sitting in my garage.) Larry
RE: [Repeater-Builder] Re: maxar 80 uhf
I needs the mike PIN out for a MAXAR 80 Mobile Any Help ??? Thanks Paul [EMAIL PROTECTED] - Original Message - From: ka3hsw To: Repeater-Builder@yahoogroups.com Sent: 8/25/2008 2:32:42 PM Subject: [Repeater-Builder] Re: maxar 80 uhf --- In Repeater-Builder@yahoogroups.com, Ian Miller [EMAIL PROTECTED] wrote: Fellows I have a MAxar 80 mobile MD34tsa1800A sitting on the shelf here. Its a 25 watter according to the side plate. I'd like to make use of the PA section on our Hamtronics unit to experiment, to see if extra RF out will cause any desense. It looks pretty beefy on the heatsink for a trial run. Here is my problem. Aside from the small RF in and out cables, there are 5 leads that go to the main board. I will assume they are for B+ and some sort of TX switching. I dont need any TX switching as the amp will be in the TX line of the repeater. Has anyone got a wiring diagram for the MAXAR handy? I've looked on some manuals sites with no luck. Thanks Ian VA2IR I have a Maxar 80 carcass at home that I'll take a look at tonight (not sure if it's VHF or UHF), but I can tell you that the coax furthest from the antenna connector is the input, and the coax closer to it is the RX feed (you can cut this one off). One wire, typically red with a white stripe, is the switched A+, another (yellow/brown, perhaps?) is regulated PA A+. Another (white/red?) is PTT (used to ground a PIN diode shut off the RX feed: you'll want to ground this full-time). The others are possibly for thermal shutdown control. If you can get your hands on a Maxar or Moxy manual, the PA's are very similar... George, KA3HSW / WQGJ413
RE: [Repeater-Builder] We all Love Super 33+ - WasAntenna connectors sealing instructions
I used to use Super 33+ and it has been great but. this is the new technology. We use this exclusively in our shop. http://www.rfsworld.com/websearch/DataSheets/pdf/?q=CTAPE-1 - Original Message - From: Eric Lemmon To: Repeater-Builder@yahoogroups.com Sent: 8/23/2008 8:42:29 PM Subject: RE: [Repeater-Builder] We all Love Super 33+ - WasAntenna connectors sealing instructions Go to the 3m product page to see the many widths and lengths of Super 33+ tape: http://tinyurl.com/68jm7g Click on the Full Description link to get the full story. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ralph Mowery Sent: Saturday, August 23, 2008 5:21 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] We all Love Super 33+ - Was Antenna connectors sealing instructions --- On Sat, 8/23/08, Richard [EMAIL PROTECTED] wrote: From: Richard [EMAIL PROTECTED] Subject: RE: [Repeater-Builder] We all Love Super 33+ - Was Antenna connectors sealing instructions To: Repeater-Builder@yahoogroups.com Date: Saturday, August 23, 2008, 8:07 PM Lowes.com at $3.84 a roll. http://www.lowes.com/lowes/lkn?action=productDetailproductId=45849-98-41277 http://www.lowes.com/lowes/lkn?action=productDetailproductId=45849-98-4127 7 Be sure how much tape is in the roll. I have seen some of the newer stuff have about 50 or so feet instead of the longer 66 feet. I may be off in the number of feet, but some rolls are shorter. I saw that at a hamfest a while back. I thought the rolls looked smaller. No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.6.7/1629 - Release Date: 8/23/2008 1:16 PMma_grp_160.gif nc35349273 Description: nc35349273
Re: [Repeater-Builder] Kenwood squelch quality
How could it be more sensitive with CTCSS? I'm not sure I understand. de N5ZTW - Original Message Follows - From: Jim Miller WB5OXQ in Waco [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Kenwood squelch quality Date: Mon, 18 Aug 2008 19:41:09 -0500 I am curious why anyone in modern times wants to use carrier squelch? All radios I have seen for years had ctcss standard. Also I am in Texas and the Texas VHF-FM society our coordinator agency frowns on carrier squelch on vhf and does not allow it on uhf. I find ctcss much more sensitive than carrier squelch. Just wondering? WB5OXQ
Re: [Repeater-Builder] WTD - 220 bandpass cavity
Ok Mike I found my unit. F-197/U Dual cavities 205-226 Mhz Fair still has them new in the box $34.95 super deal. here is the link http://www.fairradio.com/catalog.php?mode=searchquery=F-197submit.x=12submit.y=6 It has smooth reduction drive. I use mine between the transverter and PA. I'm sure it will work for you. Mine was packaged in September of 1967. It's a plug in module for B band. That must have been a cool radio it was used with. You can't beat that military stuff this filter is very well built. Del N5ZTW - Original Message Follows - From: [EMAIL PROTECTED] To: Repeater Builder repeater-builder@yahoogroups.com Subject: [Repeater-Builder] WTD - 220 bandpass cavity Date: Sat, 16 Aug 2008 20:22:03 -0400 (EDT) Hello RBites I think I posted this previously, but still lloking for a 222 MHz bandpass cavity/filter. It is going in front of a pre-amp, so it does not have to handle any TX power. Direct replies appreciated. Thanks Mike / W5JR / Milton, GA [EMAIL PROTECTED]
Re: [Repeater-Builder] WTD - 220 bandpass cavity
I bought one a few years back from I think it was FAR radio. It was new still sealed in the box from back in the 1960's A plugin module for a military radio that is adjustable. I use mine for with a transverter. I bet it would work great for you. I know where I have it stored and as soon as this thunderstorm passes I'll get the information. Until then try FAR radio website. Del N5ZTW - Original Message Follows - From: [EMAIL PROTECTED] To: Repeater Builder repeater-builder@yahoogroups.com Subject: [Repeater-Builder] WTD - 220 bandpass cavity Date: Sat, 16 Aug 2008 20:22:03 -0400 (EDT) Hello RBites I think I posted this previously, but still lloking for a 222 MHz bandpass cavity/filter. It is going in front of a pre-amp, so it does not have to handle any TX power. Direct replies appreciated. Thanks Mike / W5JR / Milton, GA [EMAIL PROTECTED]
[Repeater-Builder] ACC RC-85 / Kenwood TS-440S Remote Base Questions
I have a UHF Repeater using an ACC RC-85 repeater controller, which also controls a Kenwood TS-440 HF Transceiver as the Remote Base radio. All the HF Radio control commands seem to work fine, except the Bump Down 500 Hz command. The command is [Remote Base Prefix] 7 - it just has no reponse. But the Bump UP 500 Hz and the other Bump Up/Down - 20 Hz and 100 Hz step commands work just fine. It's not a problem decoding the 7 - the Touchtone Pad Test reads back all digits correctly. The touchtone decoder in the RC-85 seems to work extremely well and decodes noisy signals without falsing. I can be mobile, using just a handheld radio that's choppy into the repeater, and dial around on the HF radio with hardly ever having a missed digit. The other minor problem I'm having is that the transmit audio for the TS-440S is so hot coming from the RC-85 that it's unusable. The output of the RC-85 transmit audio is fixed level, and is controlled by the inputs from the receiver (in this case, the UHF repeater receiver.) If I turn down the level of the receive audio to the controller so that the TS-440 transmit audio is at the proper level, then the controller doesn't have enough audio output to drive the main UHF transmitter to more than about 2 kHz deviation. I'm feeding the transmit audio into the TS-440's AFSK IN rear-panel jack, as suggested in the RC-85 manual. Using this input, the TS-440 front-panel mic gain control has no effect on the transmit audio level from the AFSK IN jack. Looking at the RC-85 manual and in an old issue of ACC Notes which describes RC-850 and RC-85 transmit audio level setting procedures, it suggests padding down the output of the transmit audio using an attenuator or resistive voltage divider. Anyone tried this and have any starting values? Lots of fun! Larry K7LJ
Re: [Repeater-Builder] Duplexer Source.....
Don, I have 2 Wacom duplexers used but in excellent shape. One is a WP-639 (2 meter) and a WP-652A (220). Also have 3 TX-RX new in original boxes models 28-37-11E (6 can 2meter), 28-52-02A (220) and a 28-52-04319-A (220) and 1 new 220 pass cavity 11-54-01. I will tune to your frequency. If anyone else is interested contact me off list. I can be reached at [EMAIL PROTECTED] . Price negotiable. Paul Maggiore AA3VI Click here to lower your monthly payments. Act now and save! http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3oMFMsTYPpeZCbAkVed0IUX1guPVCi0GNMhQumV4dmnp1LpW/
RE: [Repeater-Builder] Hum on MSR200 Receiver
Thanks for the input(s). Here is a link to the repeater info with a photo. I think it would be a single power supply. http://www.n5ztw.com/W5MOT.htm The hum is not exclusive to the IRLP linking radio as it is present when the IRLP rig is off. The IRLP linking rig and internet connection are about a mile away. I will drive up there and look at the audio cables. I suspect a bad ground. The machine is located in a commercial repeater building with a ground strap around the base of the wall. It could be a number of things including the installation of new commercial equipment in the room. Bill N5ZTW - Original Message Follows - From: Mike Besemer \(WM4B\) [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Hum on MSR200 Receiver Date: Sat, 9 Aug 2008 11:33:12 -0400 Does the receiver share a power source with the rest of the repeater, or is it separate? Our machine has several internal sources of power. each feeding a different device (transmitter, receiver, controller, etc.) So, it's possible for the power supply to develop a bad filter on the receiver side, causing a hum on repeated audio but not on the ID's. Just a thought. 73, Mike WM4B From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of n9wys Sent: Saturday, August 09, 2008 11:06 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Hum on MSR200 Receiver It just doesn't know the words ;-p Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com On Behalf Of Bill Howdy group. I have a Motorola MSR2000 repeater on the ham bands that I maintain. VHF 147.32 in Austin (Oak Hill)Texas. It has developed a hum on the receive signal. I know it's the receiver as there is no hum when the machine ID's with no input from the receiver. The hum has been getting worse and now I need to take a look. I have schematics and instruments. I'm asking to see if anyone has seen this kind of issue before. I run a 114.8 PL but it sounds more like 60Hz not 114 hz I'll have to look at the audio and measure. The machine is on IRLP if anyone wants to take a listen the node is 3364. Any input would be helpful. Jim K5VPW monitors the machine and runs the IRLP node so he may be listening and is willing to assist. Bill N5ZTW [Attachment: image001.jpg] [Attachment: image002.jpg]
Re: [Repeater-Builder] Re: Hum on MSR-2000 Receiver
Thanks Skipp I will take a good look at the audio cables. This configuration has worked well for many years and we added IRLP a year ago but it is external. The hum is not present when you kick over the repeater and let it ID. It is only present when a signal comes in on the receiver. So first guess is it's all OK under transmit so ripple on the power supply is doubtfull. The Audio from the controller must be fine also. I suspect the audio cable from the receiver or some other cable has come loose and lost it's shield. I will post what I find. Bill N5ZTW - Original Message Follows - From: skipp025 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Hum on MSR-2000 Receiver Date: Sat, 09 Aug 2008 17:08:31 - I've seen this before on an MSR-2000 or two... or twenty... It might be related to the added interconnection cables. What kind of wire are you using from the receiver to what- ever external devices (repeater controller) you have connected? The black multi conductor round wire found and used on older Motorola Desk Mics and remotes is pretty much the only wire I use on any critical analog communications project. The brown wire within the cable is very specially shielded for low level audio applications and it makes a BIG Difference in many applications. I found out the hard way when wiring many different types of external tone and trunking controllers onto the MSR-2000 repeater back plane. I could actually see induced noise when using other high quality cables... so I went back to using only the Motorola black mic cable and have never had an external device hum problem. Motorola used to sell it separate to the mics as available wire and of course they no longer do. You could steal the wire off a used Motorola Desk Mic. I've compared the wire to other shielded wires and for some magic reason it works better for the application not to mention the color codes match the Motorola function codes I standardized on. If you trouble shoot the problem to the applied wire and are not able to locate the mentioned black mic wire... you're welcome to contact me direct about it. After mucho searching I found the mfgr and became a Dealer. If you have a short run... I might have some around to ship you for the cost of the postage. Otherwise it does cost between $1 $2 a foot.. but it does work very well. Might be something else... but the external repeater controller wiring is something I've had to take an evil eye look at more than once. Something in your original setup might have changed/moved to start-up the hum problem. Sometimes what ever caused the hum to start up is not an easy figure out. One quick generic test to source tired power supply caps (ESR)... at the repeater site remove the exciter connection from the RF Power Amplifier and terminate it into a proper load. Key the repeater with the terminated exciter and listen for the hum with the PA not drawing much current (being used). If the hum goes away... you might have tired filter caps or induced RF causing the hum introduction. cheers, skipp skipp025 at yahoo.com www.radiowrench.com/sonic Bill [EMAIL PROTECTED] wrote: Howdy group. I have a Motorola MSR2000 repeater on the ham bands that I maintain. VHF 147.32 in Austin (Oak Hill)Texas. It has developed a hum on the receive signal. I know it's the receiver as there is no hum when the machine ID's with no input from the receiver. The hum has been getting worse and now I need to take a look. I have schematics and instruments. I'm asking to see if anyone has seen this kind of issue before. I run a 114.8 PL but it sounds more like 60Hz not 114 hz I'll have to look at the audio and measure. The machine is on IRLP if anyone wants to take a listen the node is 3364. Any input would be helpful. Jim K5VPW monitors the machine and runs the IRLP node so he may be listening and is willing to assist. Bill N5ZTW
RE: [Repeater-Builder] VXR-7000
The software CE29 has a help feature press F1 to access it. The TX alignment must be done in base mode. In other words make sure the base/repeater light is off on the front panel when doing this and use a wattmeter and proper dummy load. good luck. Alan Rabin WA2AR Enlight Comm. Inc. - Original Message - From: james_thurlow2003 To: Repeater-Builder@yahoogroups.com Sent: 7/13/2008 5:03:18 PM Subject: [Repeater-Builder] VXR-7000 Help - someone tell me I'm not going bonkers. OK to put this post in context I fumble around PMR radio for events I run, have all the licenses from OFCOM and in my time programmed radios (HF and VHF) for humanitarian aid programs around the world. I've purchased a VXR-7000 repeater (used, but in as new condition by appearence). Programmed it up and it works. However its only pumping out 10/12 watts and seeing as my license allows up to 25 I'm keen to maximise coverage. Following the instructions about installtion of a duplexer I get the to bit where you hold the accessory button for 2 secs and push the PTT (Po shows) but the up / down buttons don't do nothing in adjusting the power out. Has anyone any ideas. Look forard to your replies. No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.4.10/1549 - Release Date: 7/12/2008 4:31 PM
RE: [Repeater-Builder] VXR-7000
James, Make sure the repeater is programmed to the proper TX/RX/ pl/DPL etc. frequencies before attempting alignment as noted in previous post. Good Luck, Alan Rabin WA2AR Enlight Communications Inc. www.enlightcomm.com - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: 7/13/2008 5:49:53 PM Subject: RE: [Repeater-Builder] VXR-7000 The software CE29 has a help feature press F1 to access it. The TX alignment must be done in base mode. In other words make sure the base/repeater light is off on the front panel when doing this and use a wattmeter and proper dummy load. good luck. Alan Rabin WA2AR Enlight Comm. Inc. - Original Message - From: james_thurlow2003 To: Repeater-Builder@yahoogroups.com Sent: 7/13/2008 5:03:18 PM Subject: [Repeater-Builder] VXR-7000 Help - someone tell me I'm not going bonkers. OK to put this post in context I fumble around PMR radio for events I run, have all the licenses from OFCOM and in my time programmed radios (HF and VHF) for humanitarian aid programs around the world. I've purchased a VXR-7000 repeater (used, but in as new condition by appearence). Programmed it up and it works. However its only pumping out 10/12 watts and seeing as my license allows up to 25 I'm keen to maximise coverage. Following the instructions about installtion of a duplexer I get the to bit where you hold the accessory button for 2 secs and push the PTT (Po shows) but the up / down buttons don't do nothing in adjusting the power out. Has anyone any ideas. Look forard to your replies. No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.4.10/1549 - Release Date: 7/12/2008 4:31 PM No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 270.4.10/1549 - Release Date: 7/12/2008 4:31 PM
RE: [Repeater-Builder] Zetron model 30 interconnect
I do. Contact direct K.Paul Boggs. [EMAIL PROTECTED] Mountain Emergency Communications - Original Message - From: ve5fn To: Repeater-Builder@yahoogroups.com Sent: 4/12/2008 1:50:23 PM Subject: [Repeater-Builder] Zetron model 30 interconnect HELP! Does anyone have access to the manual for this beast? Our club has acquired one without a manual. 73 .. Bill VE5FN
Re: [Repeater-Builder] Help with HP 8924C
Hi Paul the only way i found to dec. and enc. pl/ctcss is from tx and rx side. u need to go on tx and make af gen 1 to 300Hz to filter the ctcss and tx from radio don't make noise all athers to 1khz or 1.5khz from the rx side just insert pl/ctcss in af gen 1 and send signal from amplitude and send 1 khz for tone finaly go shift save and save the settings 73's John 9H5IC On 10/4/2008, Paul Holm [EMAIL PROTECTED] wrote: Hello, I've been working with my 8924C trying to learn each of the functions. I've been following the manual for an 8920B in order to focus on the analog functions vs. CDMA. I'm hoping other users out there could offer advice. I'm not picking up on how the unit deals with PL/CTCSS tones in encode or decode. The goal is to be able to see what tones are being put out by a TX and/or being sensed by a RX. The nearest thing I see in the menus is Func Gen. All others are CDCSS, Digi Page, Tone Seq, DTMF, LTR, EDACS, etc. Am I on the right track for PL by looking in Func Gen? Or should I be in a different Signal Decoder Mode? And then, when I've got this part straight, what should I be able to see displayed(tone freq? tone mod level?) when I monitor off-air signals? Thanks. 73 Paul - KC0HST
Re: [Repeater-Builder] Moto Transistor X-ref needed
Its also a TIP42. I have quite a few if you need some. Paul AA3VI _ Compete with the big boys. Click here to find products to benefit your business. http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3m7tDsiIn0qd55jVsBoGI2B9FZTp73SWVkxSnDPfjiS9OTsk/
Re: [Repeater-Builder] controllers
Please note: message attached I have a RLC-3 on ebay Item number: 260213782731 _ Click here for comprehensive information on stopping unwanted email. http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3mEu7clgmKEbrYtO3NBwAYKIcBLmEn7x9JWpqoqjzYvtnaje/ ---BeginMessage--- anyone have anything used / retired to list for sale? ---End Message---
Re: [Repeater-Builder] Re: Complete remote base stuff for sale.
Please note: message attached Duane said the cost was $285 new. W8RLL _ Control Your Weight 2007 diet of the year. Seen on CNN, 60 Minutes, and Fox News. http://thirdpartyoffers.juno.com/TGL2121/fc/JKFkuJi7IrxcrEzj7r45KMoGvGsmQNoQuE977FyJgSNg8OYudLdVd2/ ---BeginMessage--- Actaully it has been a while since I bought it, and cannot truly remember what the price was. I DO know it has the latest firmware and does the ctcss decode like it is supposed to. Chuck K0XM On Feb 6, 2008 12:36 PM, skipp025 [EMAIL PROTECTED] wrote: Chuck [EMAIL PROTECTED] wrote: I am not sure but if I remember correctly, the RBI went for well over 200 when I bought it at Dayton a few years back They were never sold cheap... If you can find a working Doug Hall RBI unit for under $200... it is probably a great deal. One need only be concerned with the firmware (internal computer software) version. The later firmware version thankfully supports ctcss decode functions in the proper Kenwood radios. cheers, s. Yahoo! Groups Links ---End Message---
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached I would be interested in knowing what you get for these. have a RBI-1 and 701 that I'm going to sell... ebay , I guess. Looking for a starting price. also am going to sell my RLC-3 with 5 radio cards...moved and took the repeater apart. 73, Dick W8RLL _ Credit card rates to high? Click here to find home equity line of credit options. http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3m3ub8bVdigbiIjBxHZSHN6iTlwpSCs8VBHP2wX4g9Nwfa6c/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached oh.. here is a guy looking for an RBI-1 only, not the radios [EMAIL PROTECTED] Do you remember what DHE was selling these for? W8RLL _ Play it loud with a new car stereo! Click here! http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3n6nDpC9iGXTjwR65HgJnEvlbZwPhFSinn5Ca0wGLV7tXycw/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
Re: [Repeater-Builder] Complete remote base stuff for sale.
Please note: message attached I tried to email directly but it was blocked. I just said that I also have a similar set up for sale.. RBI-1 and a Kenwood 701. I would like to know what you get out of yours so I can figure a starting point on ebay. I also have a RLC-3 with 5 radio cards. 73, Dick W8RLL _ Beauty Product Reviews Read unbiased beauty product reviews and join our product review team! http://thirdpartyoffers.juno.com/TGL2121/fc/JKFkuJi7GiXtdgLmFwZJiOJ647Bm4os3WGNly5ZwGUlTsm0g8Rl3Yk/ ---BeginMessage--- Hi eveyone, I am making some changes on the UHF system we have here in KC. And in those chages, I have a complete Doug Hall RBI-1 remote interface and Kenwood TM701a (2m/440) and TM-321A (220) radios to go with it, for sale. These were hooked in to an Scom 7k. If anyone is interested, email me at: [EMAIL PROTECTED] Chuck K0XM ---End Message---
RE: [Repeater-Builder] Wanted: Low Power Mobile
Have what you want Maxtrac 16 Channel 450-470 UHF. 2 waltts Tho run a pair at 5 watts with no problem, Contact me off list. New unit no mike or power cord AB6WU - Original Message - From: Captainlance To: Repeater-Builder@yahoogroups.com Sent: 1/19/2008 1:10:09 PM Subject: [Repeater-Builder] Wanted: Low Power Mobile I am seeking a Maxtrac, Radius, GM300, type radio UHF, LOW power, (2 watts)mobile radio. Originally sold for low power industrial channels. Lance N2HBA
RE: Re: [Repeater-Builder] Scotchkoat
Seems like I remember acetone works. Try it on something unimportant first. Chuck WB2EDV --- Original Message --- From: Scott Zimmerman[mailto:[EMAIL PROTECTED] Sent: 1/7/2008 12:05:05 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE: Re: [Repeater-Builder] Scotchkoat Use Scotchkoat from 3M to seal the antennas but don’t get it on you, it sticks to you as well as it does the antennas. Any one know of any solvents that can be used to remove it?? I have some on some tools and a spot on my car upholstery (I know, I know) Scott Scott Zimmerman Amateur Radio Call N3XCC 612 Barnett Road Boswell, PA 15531 - Original Message - From: Paul Finch To: Repeater-Builder@yahoogroups.com Sent: Sunday, January 06, 2008 9:46 PM Subject: RE: [Repeater-Builder] New DB-224 w/water cooled phasing harness??? Hello All, From what I have seen the quality is the same but I have been preaching on this board and others you can’t install a DB antenna without sealing every screw, bolt, plastic knot, connector and anything else that could leak water. Besides that you must take all connections to the harness and tighten all screws before you seal it. Once you do that the antenna may possibly outlive most people on this board. I have a DB-410 in downtown Fort Worth that I installed in 1976 and it still has flat SWR. Use Scotchkoat from 3M to seal the antennas but don’t get it on you, it sticks to you as well as it does the antennas. Paul -- From: Repeater-Builder@yahoogroups.com [ mailto:[EMAIL PROTECTED] On Behalf Of Steve Allred Sent: Sunday, January 06, 2008 7:40 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] New DB-224 w/water cooled phasing harness??? YES! Recently replaced a new DB-224 that had wicked water in the molded harness section and ended up inside the connector. Upon receiving a replacement antenna, we sealed the heck out of the harness with vapor wrap before installation. This one seems to be holding up for now, for now knock on wood. The local PD did not like a water logged antenna! What happened to DB's quality? Upon inspection of the old one, it seems as though the glue that was suppose to be keeping the water out was not only sparsely applied but was also very brittle. Any movement of the harness would crack the glue resulting in a potential place for water to enter the harness. Steve / K6SCA kc4wdi [EMAIL PROTECTED] wrote: We have installed several new db-224 recently. This particular antenna was inverted and has been in service less than 6 months. While doing a routine test, I noticed the ref. power was a little high. The longer the TX was up, the lower the ref. power got; which typically indicates water in a connector or cable. We found water in the connector at the center of the antenna. It DID NOT come through/around the weather seal! The harness was carefully disassembled. Water (and corrosion) was found in the molded junction above the center connection. Has anyone seen this before? Has the quality slipped that much on the new db-224's? Any feedback is greatly appreciated! -- Looking for last minute shopping deals? Find them fast with Yahoo! Search. REMEMBER - You can find it on ebaY No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.13/1210 - Release Date: 1/5/2008 11:46 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.13/1210 - Release Date: 1/5/2008 11:46 AM REMEMBER - You can find it on ebaY -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.13/1213 - Release Date: 1/7/2008 9:14 AM
Re: [Repeater-Builder] Looking for Micor 114.8 Hz PL reeds
I have a new 114.8 reed from an MSR2000 from the mid 1990's Bill - Original Message Follows - From: pchupity [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Looking for Micor 114.8 Hz PL reeds Date: Wed, 03 Oct 2007 01:59:19 - Hello all; I'm looking for sender and 'sponder reeds for a Micor, TLN6824 and TLN8381 in 114.8 Hz. Anybody have some they'd like to sell? Peter
RE: [Repeater-Builder] Re: Spectrum Communications SCR 77 UHF repeater
YEP..Got the RC-100 hooked up, programed and working good in my old Spectrum SCR-77..I have learned alot!!! Tim - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: 9/7/2007 11:33:43 PM Subject: [Repeater-Builder] Re: Spectrum Communications SCR 77 UHF repeater Looks like you have everything you need right there. The controller and SCR-77 Manual should have all the information you need. s. [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Yes skipp on the back there is a 12 pin accessory jack with the following: pin 1..Aux AF input 2..RX AF output 3...Aux COR switch(goes low, 0.1 V with incoming signal). (open collector.) 100 mA max 4..Aux PTT input (GND = Transmit) Will not time out 5..Remote COR disable 6..Receiver COR out 7.+5 VDC @ 100 mA max 8.+13.8 VDC @ 500mA max 9.Ground 10CTCSS tone input 11...CTCSS trigger 12CTCSS Rx tone output - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: 9/7/2007 12:41:02 PM Subject: [Repeater-Builder] Re: Spectrum Communications SCR 77 UHF repeater Re: Spectrum Communications SCR 77 UHF repeater You might have asked for a few more opinions before you bought a specific controller. Replacing the internal controller is quite a bit more involved versus dealing with just the CW ID'er function using something like an ID-O-Matic unit. Do you want to interface the entire controller into the SCR-77 or just replace the CW ID'er function? Maybe the folks at MCC will/should have the connection information available? Our technical replies depend on how you want to interface the board to the repeater operation. There is a rear panel interface jack on the SCR-77 for use external controller connections. cheers, skipp wd4chs taw21@ wrote: Well after all the advice I bought a Controller for my Spectrum SCR-77. It is an RC-100 from Micro Computer concepts. Nice people there. Now...I have to figure out how to hook it up. I am no tech, but I know a little bit. I would first just like it to replace the old IC77 CWID board and let the RC-100 do the IDing for me. Any thoughts on how to get this going? Thanks, Tim --- In Repeater-Builder@yahoogroups.com, wd4chs taw21@ wrote: I am in need of or someone who knows anything about the CWID for a Spectrum SCR-77 UHF repeater. The CWID it has now functions good only it is not my call. From what I have read about this CWIDer you have to have the manufacturer burn a chip for you that plugs into the board. Is there any other way? Thanks, Tim WD4CHS
RE: [Repeater-Builder] Re: Spectrum Communications SCR 77 UHF repeater
Yes skip on the back there is a 12 pin accessory jack with the following: pin 1..Aux AF input 2..RX AF output 3...Aux COR switch(goes low, 0.1 V with incoming signal). (open collector.) 100 mA max 4..Aux PTT input (GND = Transmit) Will not time out 5..Remote COR disable 6..Receiver COR out 7.+5 VDC @ 100 mA max 8.+13.8 VDC @ 500mA max 9.Ground 10CTCSS tone input 11...CTCSS trigger 12CTCSS Rx tone output - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: 9/7/2007 12:41:02 PM Subject: [Repeater-Builder] Re: Spectrum Communications SCR 77 UHF repeater Re: Spectrum Communications SCR 77 UHF repeater You might have asked for a few more opinions before you bought a specific controller. Replacing the internal controller is quite a bit more involved versus dealing with just the CW ID'er function using something like an ID-O-Matic unit. Do you want to interface the entire controller into the SCR-77 or just replace the CW ID'er function? Maybe the folks at MCC will/should have the connection information available? Our technical replies depend on how you want to interface the board to the repeater operation. There is a rear panel interface jack on the SCR-77 for use external controller connections. cheers, skipp wd4chs [EMAIL PROTECTED] wrote: Well after all the advice I bought a Controller for my Spectrum SCR-77. It is an RC-100 from Micro Computer concepts. Nice people there. Now...I have to figure out how to hook it up. I am no tech, but I know a little bit. I would first just like it to replace the old IC77 CWID board and let the RC-100 do the IDing for me. Any thoughts on how to get this going? Thanks, Tim --- In Repeater-Builder@yahoogroups.com, wd4chs taw21@ wrote: I am in need of or someone who knows anything about the CWID for a Spectrum SCR-77 UHF repeater. The CWID it has now functions good only it is not my call. From what I have read about this CWIDer you have to have the manufacturer burn a chip for you that plugs into the board. Is there any other way? Thanks, Tim WD4CHS
Re: [Repeater-Builder] Micor UHF RX IC needed M6707
Thanks Ron for the input. I will look for a used mobile UHF Micor. The ironic thing is that I work for Freescale Semiconductor, we used to be Motorola. I have been there 22 years. I most likely helped build the IC I need. Bill - Original Message Follows - From: Ron Wright [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor UHF RX IC needed M6707 Date: Sun, 02 Sep 2007 06:55:02 -0500 (CDT) Bill, The UHF Micor receivers are pretty much standard in all Micor radios. Probably cheapest and best place to look is for a mobile which can be had on e-bay for $10 plus $100 shipping. The receiver is a simple remove (it unplugs), insert in your repeater and tune. If you could talk the e-bay seller into removing the receiver and shipping it only he might reduce the shipping to $90 (shipping $10, handling $80). I am not sure if you are using a mobile converted to a repeater or a full real live Micor repeater. In the live one the TXs are radically different so the mobile TX parts will not do you much good unless you would like to go thru the pain of removing a PA, hi. 73, ron, n9ee/r From: William Delbert Ellis [EMAIL PROTECTED] Date: 2007/09/01 Sat AM 10:14:59 CDT To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor UHF RX IC needed M6707 Howdy fellow repeater builders. My Micor UHF ham band repeater has gone deaf. Basic troubleshooting reveals no discriminator output When I hang a scope on the input to the 2nd IF amplifier everything looks great. I can key up my FT-817 on the machine's input frequency and see a nice signal with deviation as I talk. Switching to another repeater frequency on the FT-817 I get nothing so I'm sure the Channel element, mixer all the doubler circuits and all the other IF stages and crystal filter stages are ok. The output of U102 the 2nd IF Amplifer M6707 IC has nothing. I pulled one end of C192 the end that goes to L137 from the output of the AMP. This is easy because it's mounted dead bug on the back of the PCB. Still no output from the AMP. I did this to make sure no other circuitry down the line was holding down the output of the AMP. So I think the four diodes in the discriminator are OK. When the machine is cold and been powered down for 30 minutes or so the amp seems to work for about 5- 8 seconds when first powered up then shuts down so I'm pretty sure this IC is bad. The questions are: A. Is this a common problem? B. Where can I find a replacement? C. Is there a new device that can be used in it's place? It's in a 9 pin round package. D. Shoud I look for an old mobile UHF Micor and remove the part? Thank You group and have a nice Labor Day weekend. Bill N5ZTW Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
RE: [Repeater-Builder] Re: Spectrum - Bipolar Prom for CW ID 'er
That is the correct PROM. Mine is a 74287.But how do I program the prom?..Also, I don't need 25 of them.maybe 3. Thanks for the info...Now that I know where the PROM is in the CWID board and the part number maybe I can find someone to program it for me. THANKS! Tim - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: 8/25/2007 12:09:11 PM Subject: [Repeater-Builder] Re: Spectrum - Bipolar Prom for CW ID 'er If the IDer has a PROM then little can and should be done to go another way...a new PROM. The original prom is probably a 74287 and they easy enough to find... still. There's a guy on Ebay selling tubes of them for just over $2 each, which is a great deal. LOTof 25 - MH74S287 - TESLA 74S287 - 74287 - ic -NEW Ebay Item number: 290104898405 I bought a few tubes from him and both he and they are the real deal. If you know the PROM type one might be able to program and replace. One problem is the PROMs are so old they are hard to find. Depending on the PROM I might be able to help. 73, ron, n9ee/r Proms don't seem to be that hard to find yet. cheers, skipp
[Repeater-Builder] Need MSR-2000 Squelch Gate Modules
After getting rid of the extra MSR-2000 Squelch Gate modules for repeaters I didn't plan to have any more, a couple of UHF MSR-2000 repeaters that each need one seem to have appeared in my garage. The Service Manual lists the SGM as Motorola part # TRN5324A. I've checked ebay and other dealers lists that I was able to find, but nothing appears available right now. If anyone has one or two available, please email me direct: [EMAIL PROTECTED] Thanks, Larry
Re: [Repeater-Builder] Cooling fan relay circuit?
Hi Guys. I have used these in the past. This kit is from OZ but I am sure you must be able to get something similar over there. http://www.jaycarelectronics.com/productView.asp?ID=KC5381CATID=keywords=KC%25 Chow for now Brett Per Molund wrote: The ELK-960 Delay Timer should fit rigth in, however no temperature sensing. http://www.elkproducts.com/products/elk-960.htm http://www.elkproducts.com/products/elk-960.htm ---per LA9XKA At 05:05 17.05.2007, you wrote: My club has several ACC controllers and none have provided for cooling fan control. Does anyone have a simple circuit to turn on a fan with PTT and then keep it running for xx minutes after PTT is released? The repeater PTT line goes to ground on transmit. Most of the NE555 timer circuits that I have seen will not work in this configuration. Delay on drop out. DODO. Thanks de David K5RAV Yahoo! Groups Links
Re: [Repeater-Builder] Quintron Low VHF 4-400A PA
Thanks for the manual. What would you like to see done? Keith KB9WMJ - Original Message - From: Tony Faiola [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 9:52 AM Subject: Re: [Repeater-Builder] Quintron Low VHF 4-400A PA [EMAIL PROTECTED] wrote: Anyone have schematics, or other info on a Quintron 30-50 MHz 600 Watt Class C Paging PA? This is an older rack mounted PA that uses a 4-400A tube, with a single pill transistorized driver. Looking for power supply outputs, and HV board hookup. It has been a while, and no one has answered your request for information concerning the Quintron Corporation QT-7080 50 MHz Transmitter. I gave (free) one of these transmitters away a number of years ago. It was extremely well built and great for amateur use in the six meter band. Fortunately for you, I never gave away the manual with all the schematics, etc. Let me know if you still require the info, and I'll copy and send it to you. Probably off list is better to contact me. Ciao, 73, Tony, K3WX
[Repeater-Builder] Bonded Tower Climbers / Companies....
that might do work in the metro Atlanta area? Looking to take down, disassemble tower, dismantle antennas and hardline. Tower is a Rohn 55/ 65 mix...200'. Please contact me direct at kd4ydc at juno dot com. Thanks! Robert
RE: [Repeater-Builder] Re: DB420 performance?
Looks like an Antenna Specialists to me. Chuck WB2EDV --- Original Message --- From: Merritt[mailto:[EMAIL PROTECTED] Sent: 4/30/2007 10:35:27 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE: [Repeater-Builder] Re: DB420 performance? it was likely a lighter duty antenna... refer to the image below... http://sffma.net/images/147000/jan2006/DSC02920.JPG it may not even be sinclair.. if it isnt, who made it? note, this was after two hurricanes (katrina and wilma), but our two dB antennas made it through unscathed... there were several other of this type antenna (not dB) on the tower that were in similar shape --- In Repeater-Builder@yahoogroups.com, Gary Schafer [EMAIL PROTECTED] wrote: the sinclair i saw had the upper lobe broken off the mast, flying in the wind.. striking some 6 rigid copper feedline for a tv station! your mileage my vary but those antennas arent very neighborly! I think you're thinking of the older models. I don't think I have the upper body strength to snap any of the pieces, including the dipoles themselves, off of the HD models, even if I tried. They're made of very large tubing. I'd have to stand on it on the ground and pull with both arms to do any serious damage to the antenna, I'm sure. Even the older models were built like a tank. Much stronger than any of the other standard antennas on the market. I think you could climb on the Sinclair antenna and not harm it. They did make a lighter version with external cable harness that was not as hefty but still a very good antenna. I have a couple of the lighter NOS Sinclair antennas for UHF if anyone is interested. The model is 334-2. 6 db omni/ 8.5 db offset. $243.00 each. These are UPS shippable as they have a split mast with coupler. 73 Gary K4FMX Yahoo! Groups Links
RE: [Repeater-Builder] Re: it's a Sinclair...
Dig out an Antenna Specialists catalog. Looks like their Power Director series to me. Chuck WB2EDV --- Original Message --- From: skipp025[mailto:[EMAIL PROTECTED] Sent: 5/1/2007 12:58:32 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE: [Repeater-Builder] Re: it's a Sinclair... Looks just like some older sinclair antennas I have in service. I would call it a Sinclair at first glance.. s. it was likely a lighter duty antenna... refer to the image below... http://sffma.net/images/147000/jan2006/DSC02920.JPG it may not even be sinclair.. if it isnt, who made it? note, this was after two hurricanes (katrina and wilma), but our two dB antennas made it through unscathed... there were several other of this type antenna (not dB) on the tower that were in similar shape Yahoo! Groups Links
Re: [Repeater-Builder] wanted ISD1420p Voice chip
Matt, I would like one Voice Chip please. Please let me know if I do have one reserved. Thanks!! 73 john k5js So I will make a Repeater-Builder list and NHRC-2 upgrade special. A never before seen offer! Send me a self addressed padded envelope, with some anti-static foam that will fit a 28 pin .6 wide dip along with the qty of chips you need and I will send you some. First come first serve. mail2web LIVE Free email based on Microsoft® Exchange technology - http://link.mail2web.com/LIVE
Re: [Repeater-Builder] WTB: MSR-2000 UHF Rx
What are they worth these days? I have one spare set of MSR-2000 UHF boards, one receiver, one exciter - both with channel elements in the 460/465 MHz range (will tune to the 440 Ham band no problem). I was just getting ready to put them on ebay, as I used to get $250 for the pair a few years ago. Larry -Original Message- From: Robin Midgett [EMAIL PROTECTED] Sent: Feb 14, 2007 9:19 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] WTB: MSR-2000 UHF Rx Hi guys, I'm helping the Wilson County ARC assemble a pair of VHF MSR-2000 repeaters for club use (main and back up). We'd like to incorporate a UHF Rx in the second Rx slot of the repeaters as a control input. I'd like to know what the band split options are for the UHF MSR-2000 repeaters, and which of those are desirable for ham band use. Then I'd like to know if any of you have a one or two of those available, and for what price, please. Additionally, I have various GE Motorola and RCA gear to trade with if there's any interest. I also have some TxRx UHF cavities available. Thanks, Robin Midgett K4IDC 615-322-5836 office - rolls to pager 615-835-7699 pager 615-301-1642 home [EMAIL PROTECTED] http://www.people.vanderbilt.edu/~robin.midgett/index.htm
Re: [Repeater-Builder] Re: UHF Micor Off Frequency
Yes - they will also make sure that they're netted to the proper frequency in the process, as well. They will change any necessary caps (and use the proper type so that big temperature changes have minimal effect) to allow a good +/- range of the coil or capacitor to net to frequency, depending on the element type. Sometimes you can do it right the first time. Or you can do it twice. LJ -Original Message- From: Laryn Lohman [EMAIL PROTECTED] Sent: Jan 26, 2007 10:05 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: UHF Micor Off Frequency --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: This is why year after year, on this list, the word is continually put out: Send the elements in to have the crystal manufacturer install the crystals, temperature compensate, and net them to frequency. They know what to do. Correctly. Yes, I've read those threads, primarily in reference to proper temperature compensation, not inability to net to frequency. I've not had problems installing my own crystals until this one... Laryn K8TVZ
Re: [Repeater-Builder] UHF Micor Off Frequency
This is why year after year, on this list, the word is continually put out: Send the elements in to have the crystal manufacturer install the crystals, temperature compensate, and net them to frequency. They know what to do. Correctly. Don't waste an otherwise excellent performing MICOR radio by messing up the one piece you have control of - the crystals. You don't save money in the long run by being cheap on the crystals and crystal manufacturer's services. Do it right the first time and be done with it - for good. LJ -Original Message- From: Laryn Lohman [EMAIL PROTECTED] Sent: Jan 27, 2007 12:03 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] UHF Micor Off Frequency I just installed a new TX crystal into a KXN1052 channel element on a Micor exciter today. The crystal is from ICM. It will not come on channel. The ordered frequency is 445.125; it comes no closer than 445.1375. The crystal arrived late Friday PM, and upon installation Friday evening, the problem was discovered. I realize I may need to contact ICM when the office opens on Monday since this is a new crystal. But, is there an easy and reliable way to warp it down without the need to perhaps send the crystal back? A small cap across the crystal? Related question--why would a crystal from a reliable manufacturer be off in the frist place. Are there tolerances in the channel element that can sometimes add up the wrong way? I have some other elements of the same number; is it worth trying the crystal in another one? Laryn K8TVZ
Re: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc.
Would I gain any advantage by changing out my Motorola MICOR Repeater TPN1110B supplies (the ones with the constant-voltage transformer) to the TPN1151A Switching power supply? I have a few spares of each type, but most of my MICOR Repeaters came with the 1110B supply installed. I don't know why there were two types of supplies offered with the MICOR Repeater/Base Station radios. The switching supplies seem to be very quiet (even around an HF radio), as far as I have been able to determine. Some of the MICOR service manuals have sections for both supplies, to cover the particular unit that was supplied with the user's station. LJ -Original Message- From: skipp025 [EMAIL PROTECTED] Sent: Jan 14, 2007 9:09 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. If the supply you are using is fine why change? Yes, you would gain some amperage capacity. Relative example... A room full of Motorola Repeater Stations in non constant service costs about $30/month each to operate. Put the repeater into lock to talk mode (IRLP or Echolink) and the energy cost rises by almost a third (typical). One of the energy soaks is the well designed and constructed transformers within the repeater power supplies. Replacing the hungry Motorhead Power Supplies cuts at least 1/2 off the power bill, which is much nicer when you're the one having to pay it. However, switching supplies are inherently noisy. You could experience problems from these noises. I realize we are not talking about HF. But, it is possible to wind up with a problem you don't have now. Many of the common 13.8 vdc switchers sold to the ham market will hose up at least the 160 meter ham band no problem, which is just above the am broadcast band I have on the shop when XM is stale. If that 50 amp supply is fine, I see no advantage in the change. Dave Cheers Dave, skipp
RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc.
I was wrong about the MICOR Power Supply number. I went by the number of the other supply shown in the MICOR UHF Repeater manual, instead of actually going out across the snow into the COLD garage to visibly look at the Supply. Its number is TPN1095A (also has a TLN4731A number on it). It's quite different than the TPN1110B with its big transformer and capacitor. We always referred to the TPN1095A as The Switching Supply, but we might have been wrong all along! LJ -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Jan 14, 2007 3:44 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. Jeff, That sounds like a plan! And I agree with your and Ken's comment about the TPN1151A being a linear supply- I checked a MICOR manual to be sure. I seem to recall that there was a MICOR switch-mode supply, but I can't remember which Compa-Stations had it installed, or what model number it bore. Old age is affecting my memory, I guess... 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo Sent: Sunday, January 14, 2007 3:21 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. You have a golden opportunity to provide an extremely valuable service to the radio community! If you can obtain the use of a wattmeter, you can make a comparison between the two power supplies. One such meter is the KILL A WATT meter that is sold under several brand names. It is inexpensive, and accurate enough for our purposes. Unless I'm remembering wrong, the TPN1151A was still a ferro supply just like a TPN1110B. It had some kind of a switching circuit that was specific to that model (which was the battery backup version power supply for the Micor), but the main high current supply was still a ferro. At least that's how I remember it. I can't remember ever having either of those supplies fail (not even filter caps!) that I've never had to spend much time inside them, nor their respective manual pages. If there's really interest in something like this, I can take both types of Micor supplies, a GE M2 ferro, an Astron linear, a Duracomm/Iota switcher, and maybe a few other things I have around and load test them at a few different current draw points (something like no load, standby @2A, mid-power transmit @ 15A, and high-power transmit @ 30A) and come up with a table. I have a Transistor Devices electronic load good for 1000 watts so I can do this with a fairly high degree of accuracy. I also have a Kill-A-Watt along with traditional RMS-reading DVM's and amp-clamps too. If there's interest email me and I'll put it on the ham projects to-do list. I'm thinking of a tabulation of input E/I/PF/VA/watts, output E/I/watts, and efficiency (watts out vs watts out). Would that cover it? --- Jeff
Re: [Repeater-Builder] Digest Number 4107
Laryn, Each set (the pair as it were) on this db420 is 90 deg.s from the one above. Not the normal stacked 4 pair, then the bottom stacked 4 pair turned 90 deg of the one above. A friend of mine had given me the antenna to use for a future repeater move. Just wondering if anyone has done this and how it played. Sounds like from what Jeff said...if db products thought it would have worked they would have offered it that way. Thanks, Robert snip 4d. Re: DB413 Antenna Question Posted by: Laryn Lohman [EMAIL PROTECTED] larynl2 Date: Sun Jan 7, 2007 1:34 pm ((PST)) --- In Repeater-Builder@yahoogroups.com, georgiaskywarn [EMAIL PROTECTED] wrote: I wonder about a db420 which has had that done to. Hmmm Had what done to? Each loop if 90 deg off of each other. The loops are riveted in place. I have seen this on a db408 in omni form...maybe this is like stacked db408's? Wonder how the above setup would play. Robert I'm not clear on this Robert. As you know, the dipoles are on opposite sides in a DB408. Could you explain? Laryn K8TVZ close FREE Reminder Service - NEW from AmericanGreetings.com Click HERE and never forget a Birthday or Anniversary again! http://track.juno.com/s/lc?s=197335u=http://www.americangreetings.com/products/online_calendar.pd
Re: [Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver
Just what I needed - thanks Kevin! Larry -Original Message- From: Kevin Custer [EMAIL PROTECTED] Sent: Jan 2, 2007 5:29 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver All, On a UHF Micor, AFC is not an option, it's a standard feature. UNLESS you are going to disable the AFC functionality of your UHF Micor receiver, you'll need to flip the diode polarity - all four, when going to the opposite injection. There are four diodes in the UHF Micor receiver as the discriminator rectifiers operate as (I believe) a voltage doubler; increasing the output voltage available from the discriminator. I believe this was done for one simple reason; to eliminate the need of a voltage amplifier to run the AFC varactor in the channel element. In UHF, because of higher multiplication factor, the channel element fundamental needs less change to keep the receiver centered; as compared to a VHF LO. So, in UHF, a Micor discriminator built with a voltage doubler supplies enough voltage to the channel element varactor without the need for a AFC amplifier. Eric is correct where the VHF Micor receiver conversion is concerned, unless you are using the K1006 and companion AFC amplifier option, swapping the diode polarity is not a necessity; UNLESS you are using the receiver for something like digital communications or in a simulcast repeater system where audio polarity to the voter is (can be) important. A way to remove and swap the polarity of these fragile diodes is to snip them out with a sharp pair of dikes, instead of de-soldering them. Then, simply tack solder them back in, after reversing polarity; of course. On your 2 meter Micor receivers with Low Side Injection, likely the capacitors in the LO weren't changed from their original 150.8 to 162 MHz. values. When converting a 150.8 to 162 split Micor VHF receiver to the 142 - 150.8 split, you have a choice; change the caps and use HSI, or leave the caps alone and use LSI. We at Repeater Builder change the caps and order HSI crystals. On a UHF Micor receiver that was built for the 450 - 470 split, ham band sensitivity can be somewhat less than expected - wanted. Here is an article that can help with that: http://www.repeater-builder.com/rbtip/uhfsensitronRX.html Hope this helps... Kevin Custer [EMAIL PROTECTED] wrote: OK thanks - I'm trusting then also that I can do the same on UHF, order high-side injection crystals for my KXN1024A UHF Receiver channel element and leave the discriminator diodes as they are. Thanks again, Larry Larry, I don't think the diode polarity matters, unless you are using channel elements with built-in AFC controls. I've converted a few high-band VHF MICORs without touching the diodes, and they work just fine. 73, Eric Lemmon WB6FLY
[Repeater-Builder] MICOR Receiver Low Power Mod for Solar Site?
Several of us are looking at putting up a low-power UHF MICOR Repeater at some Solar Power sites. Standby receive power drain, of course, needs to be as low as possible. I have a copy of a modification that was done to a MASTR II VHF Repeater audio amplifier stage to greatly reduce the standby current, with a switch to re-enable the audio PA for maintenance while at the site. Has anyone ever done something similar for a MICOR receiver? The audio amp stages are quite different between a MICOR and a MASTR II. Thanks, Larry
Re: [Repeater-Builder] Re: Question re: Crystal Ordering for UHF MICOR Receiver
That's for sure about the MICOR UHF transmitter - follow the instructions, including the special MICOR section notes on the Repeater-Builder web site. Lately, every UHF MICOR Repeater transmitter that I've converted to the 440-450 ham band has had a big, nasty spur about 30 MHz above the desired Transmit frequency. I've tuned the filters, circulator, etc. but one transmitter in particular gave me fits. I tried tuning the exciter filter repeatedly (which is actually a VHF exciter, 1/3 of the intended UHF transmit frequency) using a signal generator and spectrum analyzer. I tried different exciters, filters, IPAs, 75-watt PA decks, etc. but still had that big spur. I finally hit on the right combination of tweaks in the exciter filter by just using a VHF hand-held radio on the exciter's frequency and looking for maximum output at the filter output on a wattmeter/dummy load. Success, finally - everything was clean. A few weeks ago, I was volunteered to help another local Repeater group go through their 75-Watt UHF MICOR Repeater, since I had just done one for myself and everything was still fresh in my memory about the things to look out for. Sure enough, this one also had a big spur about 30 MHz above the 440 transmit frequency. We'd never have known except by looking at the spectrum analyzer, and by the excessive power loss through the duplexer since a bunch of the Power Output was not on the intended frequency. This time, I took their exciter filter out, tuned it for maximum power output with the VHF handheld and wattmeter/dummy load and then reinstalled it. Everything was clean and all the power output was on the desired 440 frequency. Lesson learned and verified a second time LJ -Original Message- From: skipp025 [EMAIL PROTECTED] Sent: Jan 2, 2007 9:51 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Question re: Crystal Ordering for UHF MICOR Receiver On a UHF Micor, AFC is not an option, it's a standard feature. UNLESS you are going to disable the AFC functionality of your UHF Micor receiver, you'll need to flip the diode polarity I found it easier to disable the AFC. If you don't... with a poor quality crytal in a not so stable (temp) room you'd often find your repeater quite aways below F-center in the cool morning and quite aways above F-center in the hot evenings. Being the owner of a VFO Repeater was not something to be proud of. T'was one of my first real cases of buying cheap crystals that became obvious real fast. Since I never wanted the afc action in the repeater conversions... I never bothered to change the diodes... I just disabled the AFC. [EMAIL PROTECTED] wrote: OK thanks - I'm trusting then also that I can do the same on UHF, order high-side injection crystals for my KXN1024A UHF Receiver channel element and leave the discriminator diodes as they are. Where I learned the gals at International Crystal know their stuff very well. If you call and specify the UHF Micor Mobile Crystal for a KXN-1024 with high side injection... they know what you want and how to make it with out 100 extra questions. Once you get the channel element done right... you need to be sure you follow the proper manual transmitter alignment instructions. A shortcut in the tx alignment steps can result in a very nasty transmitter. cheers, skipp
[Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver
I've been following the recent thread about using high-side injection crystals in the GE Receivers. I've tried that on both VHF and UHF MASTR II, MVP, EXEC II, etc., and that always worked out well. I have several 2-Meter and UHF Motorola MICOR Repeaters locally, and they've been in operation for so many years that I never gave a thought about ordering high-side injection crystals for any of the receivers. They always seemed to work very well just sending them in to ICM and having them rebuilt for the new frequencies using the standard crystal formulas. Some of the Repeaters I inherited with the channel elements already re-crystalled, and none of the receivers' elements had been ordered with high-side injection. I'm just getting ready to send in another pair of UHF MICOR elements to ICM, and am wondering if I will gain anything by requesting that the Receiver element be recrystalled with a high-side injection crystal? Someone recently mentioned that I'd need to reverse the diodes in the discriminator if I do that, so that the AFC will work properly. In a VHF MICOR Receiver, there are just two diodes that need to be reversed, when moving a high-split Receiver down to the 136-150 MHz range. Looking at the UHF MICOR Receiver schematic, I see that there are four diodes. Which ones get reversed, if you're changing the injection to high-side? The two output diodes, or all four? The Motorola service manual part numbers for the diodes (in both the VHF and UHF Receivers) are listed as P/N # 48D84616A01 - Diode, Planar hot carrier. I know these diodes are rather small and quite fragile. They're difficult to unsolder and then resolder after reversing polarity without breaking them, as careful as I've tried to be. I did that on several of the 2-Meter MICOR Receivers that I completely rebuilt with 136-150 MHz factory parts. Sometimes the diodes broke, sometimes not. Someone on the list recently mentioned this diode fragility problem, and recommended that the user plan for replacement as part of the Receiver frequency change project, rather than trying to reuse the original diodes. If there's any advantage at all to going with high-side injection on this latest UHF MICOR Receiver, I'll go ahead and order some new diodes from Motorola, just to be ready for any that I break. But how many, and which ones get reversed? LJ
RE: [Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver
OK thanks - I'm trusting then also that I can do the same on UHF, order high-side injection crystals for my KXN1024A UHF Receiver channel element and leave the discriminator diodes as they are. Thanks again, Larry -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Jan 1, 2007 8:30 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver Larry, I don't think the diode polarity matters, unless you are using channel elements with built-in AFC controls. I've converted a few high-band VHF MICORs without touching the diodes, and they work just fine. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Monday, January 01, 2007 4:22 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Question re: Crystal Ordering for UHF MICOR Receiver I've been following the recent thread about using high-side injection crystals in the GE Receivers. I've tried that on both VHF and UHF MASTR II, MVP, EXEC II, etc., and that always worked out well. I have several 2-Meter and UHF Motorola MICOR Repeaters locally, and they've been in operation for so many years that I never gave a thought about ordering high-side injection crystals for any of the receivers. They always seemed to work very well just sending them in to ICM and having them rebuilt for the new frequencies using the standard crystal formulas. Some of the Repeaters I inherited with the channel elements already re-crystalled, and none of the receivers' elements had been ordered with high-side injection. I'm just getting ready to send in another pair of UHF MICOR elements to ICM, and am wondering if I will gain anything by requesting that the Receiver element be recrystalled with a high-side injection crystal? Someone recently mentioned that I'd need to reverse the diodes in the discriminator if I do that, so that the AFC will work properly. In a VHF MICOR Receiver, there are just two diodes that need to be reversed, when moving a high-split Receiver down to the 136-150 MHz range. Looking at the UHF MICOR Receiver schematic, I see that there are four diodes. Which ones get reversed, if you're changing the injection to high-side? The two output diodes, or all four? The Motorola service manual part numbers for the diodes (in both the VHF and UHF Receivers) are listed as P/N # 48D84616A01 - Diode, Planar hot carrier. I know these diodes are rather small and quite fragile. They're difficult to unsolder and then resolder after reversing polarity without breaking them, as careful as I've tried to be. I did that on several of the 2-Meter MICOR Receivers that I completely rebuilt with 136-150 MHz factory parts. Sometimes the diodes broke, sometimes not. Someone on the list recently mentioned this diode fragility problem, and recommended that the user plan for replacement as part of the Receiver frequency change project, rather than trying to reuse the original diodes. If there's any advantage at all to going with high-side injection on this latest UHF MICOR Receiver, I'll go ahead and order some new diodes from Motorola, just to be ready for any that I break. But how many, and which ones get reversed? LJ
Re: [Repeater-Builder] 10 meter split site rpt, eqpt recommendations?
And most important of all, USE CTCSS on the 10-Meter Repeater - especially the Receiver! Remember, there are only four - 10-Meter repeater channels to share - everywhere. They're unusable as it is, when the band opens up - a Real Mess!!! LJ -Original Message- From: Nate Bargmann [EMAIL PROTECTED] Sent: Dec 29, 2006 3:24 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] 10 meter split site rpt, eqpt recommendations? * Ed [EMAIL PROTECTED] [2006 Dec 29 09:37 -0600]: Gentlemen With the recent licensing structure changes, 10m meters is going to be open to tech-minus ops like myself. Im kicking around ideas of a split site 10m FM rpt, with a 2 meter repeater as link / dual band core. As I understand it, the 10m FM portion will still be limited to General, Advanced and Extra licensees. Technicians will have 28.000 to 28.500 (as Novices and Tech Plus/HF received on December 15) as a result of the pending RO. Any suggestions of what kind of gear would be suitable for 10m repeater use? Any tips of do's and dont's for 10m? I helped a club resurrect a 10m repeater a decade ago. It was a pair of MASTR Pro machines with a UHF TX strip paired with the 10m receiver and a UHF receiver paired with the 10m transmitter. The site seperation was about 8 miles. The UHF link used yagis and PL and the 10m was carrier squelch as I recall with quarter wave whips. Local range wasn't good, but we worked some interesting DX that summer. To boost the fun factor we linked it into the UHF repeater (we had an RLC4 which made it easy to do). A pair of MASTR II mobiles, one low band and the other UHF, may work well (swap the 10m RX into the UHF and vice versa), but I suspect good MASTR II radios may be getting tough to find. I'd suggest UHF for the auxillary link as 2m is still plenty crowded and your link may suffer from interference. Using a 10m repeater is certainly a different and fun way to work DX. Have fun! 73, de Nate -- Wireless | Amateur Radio Station N0NB | Successfully Microsoft Amateur radio exams; ham radio; Linux info @ | free since January 1998. http://www.qsl.net/n0nb/ | Debian, the choice of My Kawasaki KZ-650 SR @| a GNU generation! http://www.networksplus.net/n0nb/ | http://www.debian.org
RE: [Repeater-Builder] Solar Powered Repeater
I have one of the little Motorola MTR-300 Solar-powered Repeaters on 2-Meters. It came from the factory promoted as a Solar-powered Repeater, and the Motorola instruction manual even gives the instructions for setting up the solar panels, etc. out in the field. It's a 19 rack-mount repeater, about 6 high. This is a different Repeater than the other Motorola Repeater using two - MX-300 series HTs and an interface box in between, which I have a data sheet for, somewhere. It runs on 12VDC, the transmitter is five watts output, and uses MX-300 series handie-talkie assemblies - one for the receiver, one for the transmitter. Mine was originally in the 150-160 MHz range, so I found some 136-150 MHz MX modules, swapped out the appropriate Receiver RF deck, transmit PA, etc. modules, and had the two channel elements re-crystalled by ICM - it now works great on 2-Meters. It has a factory built-in repeater controller with local speaker, metering and local microphone, but no factory ID'er. With the local microphone and speaker, it has front-panel switch selectable for operation as either a Repeater or as a Base Station. There are some blank pull-out panels that are big enough to hold a typical small repeater control board like an S-COM 5K, an NHRC, or several others' units that wouldn't be much bigger than about 4 X 4 or so. I also have one of the little Comm-Spec ID'ers (I think it's called something like a BS-8) that are a good fit for a unit like this. One time, when my 100W MICOR 2-Meter Repeater was down having a PA deck repaired, we put the little MTR-300 Repeater up in its place. No one seemed to notice the difference in coverage, only that the talking repeater IDs, etc. were no longer there from the RC-850 controller on the MICOR repeater. I've seen a UHF version of this Repeater listed for sale occasionally, as well. I have several of these VHF MTR-300s, and one of these days, I plan to remove the VHF MX-300 series chassis' from them and try substituting chassis' from some UHF MX-300s. If it works out, I'll try running one from a high-level solar/propane generator powered site that we have way out in the boonies. If anyone needs copies of the manuals, I can arrange to send them to the folks who copy manuals for this list, so they can scan them and make them available on the web page. Larry K7LJ -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Dec 30, 2006 6:22 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Solar Powered Repeater Doug, I have a commercial, solar-powered repeater in service right now. Although it was intended to be temporary while I worked on getting a more robust system on-line, it has plugged away 24/7 for a few weeks shy of four years. This repeater comprises a Motorola R1225 UHF full-duplex transceiver running about 35 watts. The power comes from two Siemens 75-watt solar panels feeding two Concorde 105 AH 12V AGM batteries in parallel through a SunWize STECA charge controller. The antenna is a Decibel Products DB-408E elliptical-pattern antenna. This repeater has been struck by lightning several times, since it is the highest point on the hilltop, but it has never gone off the air since it features integral construction. Its simplicity is its strong point. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Doug Fitts Sent: Saturday, December 30, 2006 4:03 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Solar Powered Repeater To start the new year out on a positive note anyone on this list have any experience building a solar powered repeater system? I'd like to get a better understanding on the use of solar panels, charging system, type of batteries used and duty cycle. I'd like to experiment with a totally new subminiature repeater [my own design] powered by solar energy and stashed somewhere out here in the desert southwest, for local Ham communications. Any ideas and thoughts on this?? **Happy New Year** Doug W7FDF Vail, Arizona U.S.A.
Re: [Repeater-Builder] Re: Rule on tampering with a FCC licensed transmiter
Yes, we wish that rule was still in existance too. As a result of this situation, we had a meeting at our office since this same person may have access to some of our radio sites, as well, and may try to do some of the same snooping and plug-pulling to shut down ham Repeaters. From now on, we plan to make sure that everyone signs in and out of the site access log whenever they visit the site, and we will regularly check it against the alarm company's alarm code disable entries. We've also contacted other local site owners and government agencies to alert them to this problem. We have decided to change out the cabinet locks to some that are not the standard Motorola/GE, etc. kinds of locks that are usually found on 2-Way radio cabinets. We have certainly learned by this unfortunate situation at your radio site which is not but about a 5 minute drive from ours! LJ -Original Message- From: JOHN MACKEY [EMAIL PROTECTED] Sent: Dec 16, 2006 12:17 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Rule on tampering with a FCC licensed transmiter I wish that rule was still in existance. A member of the local repeater coordination council took actions which resulted in a repeater getting unplugged by the site manager. There was NO report of interference. After intervention by myself and others, the repeater was turned back on a few days later by the site manager. The person initiating this had no reason for taking his actions, other than to throw his weight around which has happened several times. -- Original Message -- Received: Sat, 09 Dec 2006 10:01:18 AM CST From: Jeff Kincaid [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Rule on tampering with a FCC licensed transmiter From WWII onward it was a federal crime to tamper with a licensed radio station of any kind. It was a matter of national security. But, about 10 or 15 years ago someone noticed that the rule hadn't been used in decades and it was dropped. The only remaining recourse is under local property laws; vandalism, willful destruction, trespassing, etc. Jeff --- In Repeater-Builder@yahoogroups.com, mch [EMAIL PROTECTED] wrote: They most certainly do license transmitters. It's only in the Ham type services the operators are licensed and can put transmitters anywhere (almost). That's why the commercial licenses have coordinates and frequencies on them. As for the rule, I know it exists, but I don't know exactly where offhand. I think it's going to be in the 'lower CFR parts', not in the rules specific to any one service. On the other hand, all the tower signs I've ever seen don't reference any specific rule - they just talk about the site being under the jurisdiction of the federal government. Nobody I know of quotes a specific law. Joe M. Gary wrote: Not sure what you mean John. The FCC does not license transmitters however they do license operators of transmitters and they approve transmitters depending upon they application in the U.S. All the rules and regs can be viewed at the FCC's website. Go to the Wireless Telecommunications Bureau and click on the link to 'Rules and Regulations'. Gary JOHN MACKEY wrote: Can anyone qoute me the rule abotu tampering with a federally licensed transmitter?
Re: [Repeater-Builder] FYI: FCC officially issues RO dropping code requirement today
Yes, they do - and more than ever, they seem to have conversations with themselves - more than they used to even when ACC made Repeater controllers. Good evening. Over looking the valley from Eleven hundred feet this is the WZ7WXYZ Repeater. The time is eight fifty five on twelve twenty. A R E S Net tonight at seven o'clock P M. Club meeting Friday night at seven thirty P M. The temperature is forty six degrees. The wind is twenty two miles an hour. And that's just the typical initial ID (after first key-up after a no-activity period.) Wait until it's time for any pending IDs and any 10-minute IDs for more important information that the users are breathlessly waiting to hear. Give me a quick repeater callsign (don't even need /R or /RPT any more) in 20WPM CW at a low level that you can talk over, if you need to. ANY day... Anyone who thinks CW is dead never listened to HF in the last couple months to the ARRL CW SS contest, the CQWW DX CW Contest, or to the recent 5A7A DXpedition to Libya. Somebody(s) are working lots of CW (the CW bands were FULL, day and night!) You had to see it to believe it - it was most encouraging to see. LJ -Original Message- From: VE3ID [EMAIL PROTECTED] Sent: Dec 15, 2006 7:09 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] FYI: FCC officially issues RO dropping code requirement today And at the same time, we can train them to lubricate the dynamotors that provide B+ to their rigs? (HT to you G's) Gentlemen, it is time to move on. Even repeaters have voice ID nowadays. 73 Nigel, ve3id/g4ajq STeve Andre' wrote: And the start of another. It is entirely possible to *increase* the number of CW using hams because of this. It's possible to snare folks into the hobby, and then, just when they think they're secure in the lack of a need to ever learn code-- ...They find something that uses it, and the spark of a reason as to why it might be a good idea to learn it ignites... The rest of this is up to us, however. We need to welcome these changes and then find ways to hook them onto CW and all the other wonderful modes we have. It IS possible. All is takes is imagination on our parts. --STeve Andre' wb8wsf en82 On Friday 15 December 2006 21:46, Bob M. wrote: Oh well, the end of an era. Boo-Hiss. Bob M. == --- Joe Montierth [EMAIL PROTECTED] mailto:skyislandpage%40yahoo.com wrote: http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-269012A1.pdf http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-269012A1.pdf Techs get tech+ privs, code test gone for general and extra. Joe __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com http://mail.yahoo.com Yahoo! Groups Links -- Nigel Johnson MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU http://nigel.homelinux.net http://va3mcu.ham-radio-op.net You can reach me by voice on Skype: TILBURY2591 If time travel ever will be possible, it already is. Ask me again yesterday This e-mail is not and cannot, by its nature, be confidential. En route from me to you, it will pass across the public Internet, easily readable by any number of system administrators along the way.
[Repeater-Builder] Need MICOR UHF 20-Watt PA TLE1680A
I'm looking for a MICOR UHF (450-470 MHz) Base Station/Repeater 20-Watt output PA Deck, model TLE1680A. I've run into a problem getting a frequency coordinated unless I go to much lower power than I currently have. If anyone has a TLE1680A for sale, please email me directly. I might also be interested in a MICOR 12-watt Repeater or Base Station. I do have a couple of the 12-watt UHF MICOR stations in the 406-420 MHz range (already in use), but I need the 450-470 MHz version. Thanks, Larry [EMAIL PROTECTED]
Re: [Repeater-Builder] GE Exec II Conv. Max audio 1.5 KHz Dev, how can I increase it
Could this possibly be another one of those transmit crystal problems? I had that same low-deviation problem with a UHF Motorola MICOR Repeater. I had a company up in Canada recrystal my channel elements, instead of using ICM, who I always used before. When I tuned up the exciter with the newly reworked element, I found that I could only get about 2 kHz deviation out of the transmitter. Having ICM recrystal the channel element with one of their crystals fixed the problem - now I can go easily to 5 kHz (and more, if I wanted it). One of those cases where I tried to save a few bux and got bit. What's that old saying that goes something like penny wise, pound foolish? LJ -Original Message- From: Kris Kirby [EMAIL PROTECTED] Sent: Nov 29, 2006 4:42 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GE Exec II Conv. Max audio 1.5 KHz Dev,how can I increase it On Wed, 29 Nov 2006, Bob Dengler wrote: You can really use just about any op amp, even the old 741. For that one the output is pin 6, not pin 1, the V+ supply goes to pin 7 instead of 8. I recommended the TLV2372 or LMC6482 because they're less prone to crossover distortion. If you want to order the good ones: TLV2372: Digikey: 296-12219-5-ND $1.30 Newark: 76C7976 $1.30 Mouser: 595-TLV2372IP $1.30 LMC6482: Digikey: LMC6482IN-ND $1.82 Newark: 41K2662 $1.92 Let's see.. there's a bunch of op-amps that come to mind... there's 'audiophile' amps out there, and there's just instrumentation stuff... the LM324 is pretty common, as well as the LM1458 and it's cousin the LF353 (JFET inputs). NE5532 is an audiophile part, but certainly works as well. They are really easy to use; gain is set by resistors typically. Some of them are single supply, others are dual supply. -- Kris Kirby [EMAIL PROTECTED]
Re: [Repeater-Builder] Re: spur from UHF MASTR II mobile - link radio
Should the same high-side injection be requested when ordering 440-450 MHz crystals for a MICOR channel element? So far, everything has tuned up very well just having ICM make new crystals according to the standard MICOR receiver formula, and I always send in the channel elements to be completely temperature compensated, etc. while I'm at it. But I've wondered if future orders should also request that they be ordered with high-side injection? LJ Original Message- From: k6jsi [EMAIL PROTECTED] Sent: Nov 27, 2006 9:00 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: spur from UHF MASTR II mobile - link radio --- In Repeater-Builder@yahoogroups.com, Don Kupferschmidt [EMAIL PROTECTED] wrote: Nate, I'm wondering if you can point me to a link that would further explain lo / hi injection. Hate to admit, but I'm not all that familiar about the subject, especially in repeater operation. TIA, Don, KD9PT (Snip) Hi Don, The normal MASTR II receiver uses a low-side Local Oscillator injection for their mixer. The IF is 11.2 MHz, so you deduct 11.2 MHz from the operating frequency. The normal operating frequency for the 88 series MASTR II radios is 450 to 470, so the LO (Local Oscillator) is engineered to run between 438.8 and 458.8 MHz (450 � 11.2 = 438.8; and 470 �11.2 = 458.8). When we in the amateur radio service order a low-side injection crystal, we are essentially asking the LO to operate between 428.8 and 438.8 MHz, worst case being 10 MHz below the engineered operating frequency range (440 �11.2 = 428.8, and 450 �11.2 = 438.8) This is stretching the original design of the local oscillator 10 MHz beyond the design parameters. If we order high-side injection crystals, we add 11.2 MHz to our operating frequency, rather than subtract it. So the LO will runs between 451.2 and 461.2 MHz (440 + 11.2 = 451.2, and 450 +11.2 = 462.2). If you are operating in an area of the country where you run low-in, high-out split repeaters, your receivers will operate between 440 and 445 MHz, and the highest possible LO frequency will be 456.2 MHz (445 + 11.2 = 456.2), or right in the sweet spot for the LO range (438.8 and 458.8). If you are operating in an area of the country where you run high- in, low-out split repeaters, and your receiver will operate between 445 and 450 MHz, and the highest possible LO frequency will be 450 + 11.2 = 462.2, or only 3.4 MHz higher than the designed frequency of the LO. The cross-over frequency seems to be 448.300 MHz, which is 1.7 MHz higher at a high-side injection than designed, and a low-side injection is 1.7 MHz lower than designed Local Oscillator. So, maybe a good rule of thumb would be to order high-side injection on operating frequencies below 448.300, and low-side injection on receive frequencies above 448.300. That way, the worst case scenario is your being either 1.7 MHz higher or lower than the original engineered design on the local oscillator. You can do the same math for high-band radios. Same IF. Hope that helps.
Re: [Repeater-Builder] Radio Over Ip Gateway --NEW SOFTWARE--
Frank wrote: I like too hardware things.but in some cases is too much money When i started to develop it i think the same, but the microsoft people do a realy good work, they work jointly with intel people and finaly they build realy nice drivers. IRLP is a magic idea! No GUI or Microshit Windows PMS! But i do like the fact that the Radio Over Ip Gateway software users the h323 protocol. If they built a *nix (Linux/BSD) version, that runs on a flash card and used NO GUI, that would be more userable. This would fit on a 10Mb flash card and run on a mini-itx motherboard. Anyone interested in developing an open source H323/??? Radio to VoIP program like above? -- Cheers, Mick E-mail: [EMAIL PROTECTED] Web:www.deathnet.id.au/~mick/ Phone: (+61)0434149748 My Parents said I could be anything, so I Became an Asshole! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Good Radio's for Repeater? Sounds like Micor vs Mastr II
Yes, I've been going through that battle for several months with one particular MICOR 75-Watt repeater transmitter that I'm trying to move down to the 442 MHz range. I've retuned the exciter (VHF) output filter, and the UHF filter where you remove the soldered-on cover and then use the hex wrenches to adjust the tuning (the four coils always seem to be epoxied or superglued - most of them will break loose, but there's usually one or two that just won't go even after using acetone to loosen up the glue, and the hex wrench then just strips out the detents.) I retuned the internal circulator. Lots of spurs - I've tried different exciters, different filters, different ICM-rebuilt channel elements, PA Decks (2-watt, 12-watt and 75-watt versions) and PA control boards. Still lots of spurs when I crank the power up. Hopefully, I'll tackle it again before too long and go through everything again, try to find the right combination. But the receiver sure does work great, especially with the Angle Linear Preamp ahead of it! LJ -Original Message- From: DCFluX [EMAIL PROTECTED] Sent: May 9, 2006 1:46 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Good Radio's for Repeater? Sounds like Micor vs Mastr II VHF or UHF? I used to be all about the Micor then I took a look at a spectrum analyzer. Now I do GE, which has a solid transmitter but the RX leaves something to be desired. On 5/9/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Sounds like Micor vs Mastr II to me! 73, Brian with Micors, Maxtracs (GM300's) ... Notice we never argue about Midland, Uniden, Alinco . wait for it Spectrum? YAHOO! GROUPS LINKS Visit your group Repeater-Builder on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: accepting recommendations
Try Toledo, Ohio; Cleveland;and Detroit. About a 2 to 3 hour drive then. Al - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, May 07, 2006 11:04 PM Subject: Re: [Repeater-Builder] Re: accepting recommendations Have one for me while you're there - It looks like I'll have to miss this year :-( But I do keep checking the airfare websites every day just in case - I look at fares to Dayton, Columbus, Cincinnati, Louisville, etc. No reasonable airfares to be found (I've been checking every day since before the beginning of the year). Hopefully next year! LJ Very true... cheers, skipp ps: I can almost smell those Dayton Brauts... Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: accepting recommendations
I spoke with the Chief Engineer of the radio station where this volunteer helper wants to build this Hi-Fi Ham Band 2-Meter Repeater for a link for the local FM Stereo station. This situation came up some months ago, and should have died by now, but it seems to have appeared again. He tells me that trying to reason with this stubborn guy is just absolutely impossible - he has his mind made up that he's going to do this project, this way, and that the Chief Engineer has no idea what is going on regarding building Repeaters, when he in fact has a very well designed, excellent performing 2-Meter, UHF and 6-Meter Repeater system (with additional internet and RF links, etc.) He knows what's going on when it comes to building Repeaters, and has even done some of these things like changed out some of the lifetime warranty Permakay filters in years past (but going from wideband to narrowband filters - not the other way around!) There are no vacant 2-Meter pairs in this big city area, and even if this was something that was legal to do (it isn't, of course), he'd be on a 20+ year waiting list for a channel to become available. And it certainly would not be a Wideband channel. It certainly takes all kinds - we see it right here on this list, sometimes! LJ -Original Message- From: skipp025 [EMAIL PROTECTED] Sent: May 7, 2006 7:21 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: accepting recommendations us_communications1 [EMAIL PROTECTED] wrote: Good Afternoon Gentlemen, just the above scares half of us away... I am looking to build a hi-fi quality audio repeater to feed audio for remote broadcasts of a non-commercial radio station which has been greatly annoying, greatly annoying..? You, the remote broadcasts or the fact that you're on a non commercial radio station? as I need a specific IF filter for a motorola receiver a tu-540w and I have been unable to find the filter. You probably won't find a plug and play or drop in replacement filter. But you need to be more specific... do you want to do standard voice remotes as in typical short traffic reports? ... or do you want to do extended voice broadcasts with possible other source material added in. The former is easily done with standard wideband fm radios, the other is more often done with wide bandwidths. In addition, the chief engineer for the station has been completely un-helpful. It's probably not something he's been required to do in past. And he may not be honestly interested in doing one now. While I am not an amateur radio operator, I am building this repeater for amateur radio use on the 144-148 mc band and the engineer of the station claims he has an amateur radio license, but i am beginning to have my doubts and the engineer has not been supportive of building a hi-fi audio repeater. As wacky as your post reads, I'd also probably have doubts about helping you with a hi-fi audio repeater. Hi-Fi and repeater don't normally get used in the same sentence. You haven't been clear about what type of material (content) to be sent through this magic box. how can i confirm if the engineer has a amateur radio license? www.qrz.com Would an Amateur License be required to build a repeater? I wouldn't think so, although it would be handy. is there a listing of engineers and what licenses they have? God I hope not... and no I don't think so. i went through a lot of trouble to find the older tube type equipment to build this hi-fi quality audio repeater and want to make it work to serve the non-commercial fm station. In the 144-148 MHz band? Tube type equipment you think will have better audio than some of the newer stuff? Some of the group readers are falling back over in their chairs reading what you're trying to do... and how you're going about it. what suppliers carry older motorola radio parts? No suppliers really, but there are at least 12 full size battleship loads of surplus NOS Motorola Parts, which have not yet made it to the recycler or landfill. You're going to have to do some flea markets (Like the Dayton Hamvention) and a lot of searching around. When you come back down to the real world, ask companies like Comm-Spec if they have anything close in their crystal filter retrofit kits. Otherwise it's not that hard to make filters. Life goes on... skipp Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: accepting recommendations
Have one for me while you're there - It looks like I'll have to miss this year :-( But I do keep checking the airfare websites every day just in case - I look at fares to Dayton, Columbus, Cincinnati, Louisville, etc. No reasonable airfares to be found (I've been checking every day since before the beginning of the year). Hopefully next year! LJ Very true... cheers, skipp ps: I can almost smell those Dayton Brauts... Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] FLAT AUDIO -- GM300 / MAXTRAC
[EMAIL PROTECTED] wrote: Hi all! Maybe I'm going blind (after reading all the small print of the manual)! or I just missed it somewhere... On the GM300 or Maxtrac: Is there a software spot or a control switch that send flat audio to the 16 pin accessory connector rather than pre-emp audio? With the GM300 P551 in position A provides unmuted/flat audio and position B provides muted audio with de-emphasis. Thanks Brian, WD9HSY -- Cheers, Mick E-mail: [EMAIL PROTECTED] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: A couple of questions about hard line
Ok, are we having fun now? This should be thoroughly beat into the ground now.. -Original Message- From: Dave VanHorn [EMAIL PROTECTED] Sent: Apr 24, 2006 2:52 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: A couple of questions about hard line --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: Of course !! CG = Channel Guard - General Electric PL = Private Line - Motorola QC = Quiet Channel - RCA All are commonly referred to by CTCSS If this gets too big, it's going to start looking like SPAM(tm) :) Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Motorola TLE-1703A Amplifier
The TLE1713A is number for the 75-watt UHF PA Deck. I don't have the MICOR Repeater manual in front of me, but I believe the TLE1703 is the 40-Watt (or maybe it's the 20-watt PA).All three PAs had the big heat sink finsacross the rear of the unit. Then there were the 2-watt and 12-watt UHF MICOR PA decks, but they were only about 6" or so across, with the heat sink fins that pointtowards the front. The 2 and 12-wattPAsfit between the exciter and power control board, saving some rack space. I've been trying to find a 20 or 40 watt PA for some time - I always find plenty of the 75-Watt TLE-1713As, but want one of the lower-power ones for aparticular project.-Original Message- From: "Andrew G." <[EMAIL PROTECTED]>Sent: Apr 3, 2006 3:44 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Motorola TLE-1703A Amplifier The 1703A is a 75watt continuous duty amplifier. UHF usually 450-470MHz and will work down into the ham bands. Apply 12V to the + terminal and either about 9V (for 75w max) or 12V for (100watts w/ a fan) to the control point, middle screw terminal on power block. Drive if I remember right is about 200mw to about 1watt I believe.Andy KC2GOW Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates. <ZZZ!-- -- banner|**| html egp |**|begin><ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Way OT, but a question...
Comes up fine, here, even on my slow dialup connection. Or are you just April Fooling us, Neil? -Original Message- From: [EMAIL PROTECTED] Sent: Apr 1, 2006 6:10 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Way OT, but a question... This page cannot be found. Neil Original Message From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Way OT, but a question... Date: Sat, 01 Apr 2006 01:38:11 -0800 Some interesting boxes have been appearing on street lights in my area. Anybody know what they are? http://www.repeater-builder.com/wa6ilq/whatsthis.html (two photos totalling about 175KB) Mike WA6ILQ Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] VXR-5000
Thanks Eric, I don't own a Spectrum Analyzer but I talked to friend at a two way shop and he is willing to help a Ham out with showing me how and using his equipment, there are still nice people out there thank heavens, 73's for now Mike A N1KTD Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] crackle in a repeater tower
Hi Ian, Have you tried a different antenna. Verticals get that way as they get older due to cracked solder joints. Al Romeo, Michigan - Original Message - From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 22, 2006 2:12 AM Subject: [Repeater-Builder] crackle in a repeater tower Hi guys .Is there a way that you can locate loose bolts or fittings in a tower by having a transmitter txing on the tower and checking the tower with a spectrum anayzler with a beam for interference on other frequencies .I have a tower that crackles through VHF repeaters that are operating on the site and sometimes it affects uhf repeaters on site as well but i still havent found where it is coming from .It has to be something loose as it is worst on windy days any sugestions would be great Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Vertex VXR-5000
The VXR-5000 as far as I know didn't have it's CWIDer can't find my service manual anywhere, Mike A N1KTD Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater
I thought these 1/4KW amps used 8560A tubes?? -Original Message- From: [EMAIL PROTECTED] Sent: Mar 20, 2006 9:28 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater I don't know about the later models but when I was servicing the 100 - 275 - 375 watt transmitters, careful maintenance of the blower motor was necessary. When you determine the blower motor seems to be slowing down ( lack of bearing lubrication? ) try that first. If that doesn't do any good, then a trip to the local electric motor repair/rewind shop is necessary. Early on, I used to take the entire motor to that shop - later years and since we had 30-35 blower motors in various systems everywhere, I got to the point of disassembling the motor at our shop and taking the armature to the motor shop for a bearing change. They had the bearing press, and the skill, we didn't. Hope this helps / others probably have different ideas. Whatever works for you is best. In regards to the pair of 4CX250B's - those tubes require serious air circulation. If the blower motor needs servicing, the air filter is dirty or the fins of the tubes are plugged with dirt, the tubes will have a very short life. Remember, keep all contacts on that tube socket very clean, properly tensioned, for best performance and reliability. Another item to be aware of is the 4CX250B filament voltage. The required filament voltage is 6.0 Volts (not 6.3 Volts) at 2.6 amperes. Absolute minimum heating time is 30 seconds. Careful attention to the correct filament voltage will give longer life than if you don't. I am reading from the RCA loose-leaf lay-flat Vacuum Tube Engineering Manual. The tube, properly installed, requires an air-system socket ... with the use of a ceramic chimney to direct the air coming through the socket to pass through the plate cooling fins. Hope this helps, Neil - WA6KLA Original Message From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater Date: Mon, 20 Mar 2006 16:33:14 - Ahhh... the famous Motorola 1/4kw dual 4cx250b final? Never saw one that held up long term without regular hands-on service. Hard to keep a blower going in some of the earlier units. You're going to love trouble-shooting the safety interlock circuits connected to the power supply. Just a bit more fun than working on an MSY or MHB repeater/base. cheers, skipp ke4ovn [EMAIL PROTECTED] wrote: Hello Group: Looking on information on A motorola micro repeater, 2 tube final Model Number-B93rcb-31058.On 2meter band now, Tube final drop from 250watts to 30 watts. Need to find a manual number so I can troubleshoot. Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater
OK - I was sure my book shows a pair of 8560As for VHF. The UHF ones we had used 8874s. LJ -Original Message- From: [EMAIL PROTECTED] Sent: Mar 20, 2006 4:34 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater Some do ... earlier ones do not ... except on UHF ??? Neil Original Message From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater Date: Mon, 20 Mar 2006 10:39:34 -0800 (GMT-08:00) I thought these 1/4KW amps used 8560A tubes?? -Original Message- From: [EMAIL PROTECTED] Sent: Mar 20, 2006 9:28 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater I don't know about the later models but when I was servicing the 100 - 275 - 375 watt transmitters, careful maintenance of the blower motor was necessary. When you determine the blower motor seems to be slowing down ( lack of bearing lubrication? ) try that first. If that doesn't do any good, then a trip to the local electric motor repair/rewind shop is necessary. Early on, I used to take the entire motor to that shop - later years and since we had 30-35 blower motors in various systems everywhere, I got to the point of disassembling the motor at our shop and taking the armature to the motor shop for a bearing change. They had the bearing press, and the skill, we didn't. Hope this helps / others probably have different ideas. Whatever works for you is best. In regards to the pair of 4CX250B's - those tubes require serious air circulation. If the blower motor needs servicing, the air filter is dirty or the fins of the tubes are plugged with dirt, the tubes will have a very short life. Remember, keep all contacts on that tube socket very clean, properly tensioned, for best performance and reliability. Another item to be aware of is the 4CX250B filament voltage. The required filament voltage is 6.0 Volts (not 6.3 Volts) at 2.6 amperes. Absolute minimum heating time is 30 seconds. Careful attention to the correct filament voltage will give longer life than if you don't. I am reading from the RCA loose-leaf lay-flat Vacuum Tube Engineering Manual. The tube, properly installed, requires an air-system socket ... with the use of a ceramic chimney to direct the air coming through the socket to pass through the plate cooling fins. Hope this helps, Neil - WA6KLA Original Message From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Motorola Micro 1?4 kilowatt Repeater Date: Mon, 20 Mar 2006 16:33:14 - Ahhh... the famous Motorola 1/4kw dual 4cx250b final? Never saw one that held up long term without regular hands-on service. Hard to keep a blower going in some of the earlier units. You're going to love trouble-shooting the safety interlock circuits connected to the power supply. Just a bit more fun than working on an MSY or MHB repeater/base. cheers, skipp ke4ovn [EMAIL PROTECTED] wrote: Hello Group: Looking on information on A motorola micro repeater, 2 tube final Model Number-B93rcb-31058.On 2meter band now, Tube final drop from 250watts to 30 watts. Need to find a manual number so I can troubleshoot. Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] ID this board....
I picked up a GE Station card at the hamfest yesterday and need help IDing it. Stenciled on the board is 19D417752P1. On the metal plane inside the ID is 19D417760G1. On the front it has a meter that shows on one side -20 to 100+ with a RED dash at 70+. The other side show 2 scales in one. One is 5 dashes below zero (no numbers) and goes up 5/1, 10/2, 15/3. Red test jack for 10v (FS is there too). One switch has INT and EXT. Another has RX and TX. What is this??? :-) Robert Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 1GB of Email Storage. Visit http://www.juno.com/value to sign up today! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: [GE] M-PA or M-PD finding a COR
That would be great, someday, if you have the time to do up an article about making M-PDs into a Repeater. I think that it would be a welcome addition to the Repeater-Builder web page. I know that the Motorola MX-series handheld radios make great Repeaters - Motorola made several different factory-packaged versions of the MX-Series Repeater. I have a Factory VHF MX 19 Rack-Mount Repeater that was originally in the 160 MHz range that I rebuilt with the low-split MX modules into a 2-Meter Repeater that works very well. I have the factory service manual for it, as well. These low-power MX Repeaters were designed to work at a Solar-powered site, they run on 12VDC and draw very little current. A Repeater using GE M-PDs would be nice, too, since I have plenty of M-PDs and service manuals. Thanks, Larry -Original Message- From: Gary Peterson [EMAIL PROTECTED] Sent: Mar 11, 2006 2:55 PM To: [EMAIL PROTECTED] Subject: Re: [GE] M-PA or M-PD finding a COR Vincent: It must be a trunking front - there is no COR signal on the conventional MPD. It's called the receiver mute line. I have not used MPA's because MPD's are so cheap and very acceptable for this application. Just get a volt meter and check each of the mic pins to ground for a +5vdc signal only present when the receiver is busy. IMPORTANT NOTE: don't program the transmitter radio for a receive on the repeater input, or it will not transmit at all if you ever duplex them. If an MPD/MPA receives a signal and then you key the transmitter 20msec. later, it does not transmit in duplex usage. In a cross band application that should not be an issue. I have three repeaters built from MPD's and they work great and are easy to service. Just watch for problems with battery packs... all our failures so far have been due to battery pack problems. We really should be using battery pack eliminators for a full service repeater. Gary NZ5V Vincent Caruso wrote: Dose anyone know where I can find the COR on an M-PA or M-PD portable? I need to make a small cross band repeater and these radios would be ideal. the box would be similar to the CHP motor cycle extender. Thanks [Non-text portions of this message have been removed] To Unsubscribe, Click Below: mailto:[EMAIL PROTECTED] No Subject or Text is required. Yahoo! Groups Links To Unsubscribe, Click Below: mailto:[EMAIL PROTECTED] No Subject or Text is required. Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GE CG Board
I don't have any of those small"exciter-only" CG boards, but I do have some of the DIP switch encode/decode programmable CG boards available that go into the MASTR II mobile and base station radios. LJ -Original Message- From: FHS <[EMAIL PROTECTED]>Sent: Mar 10, 2006 8:22 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] GE CG Board Do any of you have a Tx CG Board, 19C331044G1, in your surplus parts stock? This is a Tx only Programmable CG board. It is about 3" X 3" and mounts in the Tx exciter area of a MII repeater station. If you do, please let me know off net. Fred Seamans W5VAY<ZZZ!-- -- banner|**| html egp |**|begin> <ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Radio Question
Our service tech for the Spectra radios here at our shop would like to know what's the Time Bomb Problem? It must not be a problem in the 800-MHz Spectras. LJ -Original Message- From: Mike Morris [EMAIL PROTECTED] Sent: Mar 8, 2006 9:06 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Radio Question At 05:11 PM 03/08/06, you wrote: I have a friend that has access to some Motorola Spectra radios in the VHF (160mHz) area. Look at www.reepater-builder.com ... go to the Motorola page, then the Spectra page. Look at the ranges section. The low range is 136-162MHz, the high range is 146-174MHz. Either will work well as a 2m mobile, but the low range is preferred. What is the ACTUAL model number AND the ID number off the label? Are these radios good radios, They are top-of-the-line previous generation public safety grade. Motorola no longer provides depot service for them so most agencies are selling them off. The time bomb capacitor problem didn't help. and will they work for a 2 meter repeater? Not as the repeater transmitter itself. Look at the size of the heat sink. It's the old mobile-in-a-continuous-duty-environment problem. Mike WA6ILQ Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: WTB Vibrasponder and Vibrasender Reeds (numbers)
Right now what I have in there is a Vibrasponder K1000B. \ On the Vibrasender I have a Bramco reed #A02348. I think a Vibrasender TLN6824A will work. Any body with 77hz in these #'s?? Thanks, Robert Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 1GB of Email Storage. Visit http://www.juno.com/value to sign up today! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] WTB: Vibrasponder AND Vibrasender reeds
I am also in need of some reeds. 77hz Email direct at kd4ydc at juno.com Thanks, Robert Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 1GB of Email Storage. Visit http://www.juno.com/value to sign up today! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Micor 375 Watt TLD5082 question?
That highly-modified Motorola MICOR amp would definitely fill in some of those dead spots in a repeater's coverage area! However, most of us would never be able to get a Repeater coordinated through our local coordination councils for that kind of output power. Mine is coordinated for 250 Watts, but a pair of 8877's probably couldn't be throttled back to that kind of QRP power. ALPHA 77SX HF amplifiers use a pair of 8877's, and they will do 5000+ watts output no problem. But a pair of 8877's are VERY expensive! I have plenty of new, spare 8560A tubes, which is what the original VHF MICOR 250-Watt PA deck uses. I wonder if that KL7FB amp conversion article would give the plate line change info so that the original 8560 tubes could be used on 2-Meters? If anyone finds a link to the original article, please post it. I was able to find a web page with pictures of this KL7FB Motorola amplifier 8877's conversion, which makes reference to the original article, wherever it was published: http://home.cogeco.ca/~ve3kh/amplifiers.html Unfortunately, so far I've not been able to find the original article that he mentions. Thanks, LJ -Original Message- From: kl7fz [EMAIL PROTECTED] Sent: Feb 26, 2006 9:16 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Micor 375 Watt TLD5082 question? There were several guys who did major conversions of these amps for use in the ham band and at much higher power for use with EME. All based on the initial work done by KL7FB, Chris. Not for the faint-hearted though. The thing was basically gutted and a new set of sockets and tubes installed (2 x 8877). Plate line was modified, and the changes were noted and documented by several of the the users. To run the thing up to see what it would do at full power, special terminations and power supplies were brought in. Somewhere around 6KW out was noted. But normal use of the amp was on much smaller and in some cases, portable power supplies that would yield full legal power. Not much strain on the amp at that level and those expensive tubes will last forever. Last I heard there were six or seven of the things in use. There was quite a bit of documentation on the web at one time. Should still be out there. Look for KL7FB or dual 8877 EME amp. This conversion would definately take care of the weak spots in your repeater coverage! All you would need would be several remote receiver sites to balance it out. ;) KL7FZ --- In Repeater-Builder@yahoogroups.com, Bryon Jeffers K0BSJ [EMAIL PROTECTED] wrote: I have a Micor 375 Watt station that has the TLD5082 high power PA. I have a fresh set of tubes in the station and on a commercial frequency (156.???) it makes good power, about 400 watts or so.. I have tried to get it to tune up on a 147.??? ham frequency but to no avail. I have heard of these going down with no problem but this one just won't do it. I of course checked MOL to see if the needed parts were available to convert it to the ham band (TLD5081) but they are NLA... Has anyone converted one of these to the ham band and if so what parts did you change? According to the manual the grid tuning cap and some other assorted coils are needed, but I would like to hear from someone that has made one of these work in the ham band... Thanks for your time! Bryon K0BSJ Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
Yes, I have both manuals. LJ -Original Message- From: [EMAIL PROTECTED] Sent: Feb 24, 2006 12:53 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? Larry, I believe we discussed this fairly recently ... the PA deck being the same as the Motrac of the same frequency range. I may have that manual in my files - my manual index gives the part numbers of the manuals for the power range involved ... but does not specify 'if' the manual involved includes the 136-150 MHz range. Only a close-up careful study will determine that. With the correct manual in hand, you can then tell what is actually changed in the band split. Comment? Neil Original Message From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? Date: Thu, 23 Feb 2006 16:08:36 -0800 (GMT-08:00) It would be interesting to have someone take some pictures and some careful measurements of the main PA plate line in the TLD5082 amp (which there seem to be many of), and then have Kevin take some pictures of his low-split TLD5081 amp, measuring the 5082's PA's dimensions against his 5081's PA pieces for comparison. I've never actually had a 1/4 KW VHF MICOR to see just how the plumbing in the PA deck is done, and to see if it is something that could actually be modified or even manufactured from scratch to be functional in the 2-Meter range. Unfortunately, the service manual doesn't have any detailed pictures of the high and low-split amps for comparison or to show just how they're constructed. Years ago, I contacted some of the dealers in Canada that used to have a lot of 136-150 MHz MICOR gear, but never found anyone who actually had one of the stations with the low-split 1/4 KW VHF Amp. LJ -Original Message- From: John Sichert [EMAIL PROTECTED] Sent: Feb 23, 2006 3:54 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? TLD5081 = Gold 8560s (D02) = Silver 1/4 KW Micor on 2 = Priceless At 06:36 PM 2/23/06, you wrote: I have a TLD5081 amp that is not currently in service. Unfortunately, it is not for sale, but I could take some digital photos of the internals and get them to you. Just let me know what areas you would be interested in. It is currently at a remote site, so it may take a few days to get them to you. Let me know if are interested, and 73. Kevin, K9HX Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Best broadband VHF antenna
Have a question for the list. Is there an antenna (VHF) that will cover a 30mhz bandwith? (Reasonably) There is a system in Georgia incompassing the entire state using various tall towers. On the towers will be antennas that will be used for VHF Repeaters and VHF digital. (in the ham band) T he NWS is hoping to use the same antennas on a Mesonet. (like this one http://www.mesonet.ou.edu/) They are looking at the government freq.s right now but thinks there may be something in the 175mhz band. Will this work? I suggested the db224, but I see it's bandwith is only 10mhz. I do realize these will work out of band pretty well (using a db224 for a remote base antenna and a db420 on a repeater now)...but just wasn't sure if there was a better choice. Thanks, Robert Burton DEC NWS in Peachtree City,GA www.georgiaskywarn.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
I do have a 250/375-Watt MICOR VHF Base Station/Repeater service manual, but the 2-Meter range PA parts are no longer available from Motorola. They were ridiculously expensive when they were available ($900+ for just the replacement plate line, and Motorola only had one in stock back in the early 1990's). That's why I just went with the rebuilding of several 100-watt PA decks from 160 MHz down to the 2-Meter range. Those were a lot of work and cost about $150 in parts (50+ parts to change out), but lots less than the 375-Watt PA would have cost to rebuild. LJ -Original Message- From: H Hugh Flint [EMAIL PROTECTED] Sent: Feb 22, 2006 10:05 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? Bryon, I have benn contemplating the conversion on one of the units I have, but am still trying to run down a manual on the beast. So if you know where I might find a copy of the manual I would get started, Hi.. 73, Hugh, KF7LN Bryon Jeffers K0BSJ wrote: I have a Micor 375 Watt station that has the TLD5082 high power PA. I have a fresh set of tubes in the station and on a commercial frequency (156.???) it makes good power, about 400 watts or so.. I have tried to get it to tune up on a 147.??? ham frequency but to no avail. I have heard of these going down with no problem but this one just won't do it. I of course checked MOL to see if the needed parts were available to convert it to the ham band (TLD5081) but they are NLA... Has anyone converted one of these to the ham band and if so what parts did you change? According to the manual the grid tuning cap and some other assorted coils are needed, but I would like to hear from someone that has made one of these work in the ham band... Thanks for your time! Bryon K0BSJ Yahoo! Groups Links -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.0.0/267 - Release Date: 2/22/2006 Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
It would be interesting to have someone take some pictures and some careful measurements of the main PA plate line in the TLD5082 amp (which there seem to be many of), and then have Kevin take some pictures of his low-split TLD5081 amp, measuring the 5082's PA's dimensions against his 5081's PA pieces for comparison. I've never actually had a 1/4 KW VHF MICOR to see just how the plumbing in the PA deck is done, and to see if it is something that could actually be modified or even manufactured from scratch to be functional in the 2-Meter range. Unfortunately, the service manual doesn't have any detailed pictures of the high and low-split amps for comparison or to show just how they're constructed. Years ago, I contacted some of the dealers in Canada that used to have a lot of 136-150 MHz MICOR gear, but never found anyone who actually had one of the stations with the low-split 1/4 KW VHF Amp. LJ -Original Message- From: John Sichert [EMAIL PROTECTED] Sent: Feb 23, 2006 3:54 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor 375 Watt TLD5082 question? TLD5081 = Gold 8560s (D02) = Silver 1/4 KW Micor on 2 = Priceless At 06:36 PM 2/23/06, you wrote: I have a TLD5081 amp that is not currently in service. Unfortunately, it is not for sale, but I could take some digital photos of the internals and get them to you. Just let me know what areas you would be interested in. It is currently at a remote site, so it may take a few days to get them to you. Let me know if are interested, and 73. Kevin, K9HX Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Mastr II Cabinet
Likewise, for my 100W and 200W GE MASTR II cabinets - a GE1000 key. The BF10A worked in the mobiles and small GE cabinets. LJ -Original Message- From: N9WYS [EMAIL PROTECTED] Sent: Feb 22, 2006 9:06 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Mastr II Cabinet Might be a GE1000 key... That's what mine needed anyway. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Wisdom Sent: Wednesday, February 22, 2006 10:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mastr II Cabinet Hi All, I picked up a Mastr II Cabinet today (6 foot) it has what looks like a vending machine lock on the front and what looks like a bf10 lock but the bf10 key doesnt fit in. Anyone have any ideas what these might be ? High Security locks ?? Im going to drop them off at the locksmith's tommorrow and see if they can figure out the keys Any help is appreciated Thanks --Don Wisdom KD7WKF Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Mastr II Cabinet
Yes, it was indeed something like a vending machine lock - I just had never thought of it as such, but htat's a good description. It kinda pops out when you unlock it, and you have to press it back in to lock it back up. Quite different than the small locks that require the BF10A key. LJ -Original Message- From: Don Wisdom [EMAIL PROTECTED] Sent: Feb 22, 2006 9:36 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Mastr II Cabinet Do you guys have the same type of lock i was describing ? --Don On 2/22/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Likewise, for my 100W and 200W GE MASTR II cabinets - a GE1000 key. The BF10A worked in the mobiles and small GE cabinets. LJ -Original Message- From: N9WYS [EMAIL PROTECTED] Sent: Feb 22, 2006 9:06 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Mastr II Cabinet Might be a GE1000 key... That's what mine needed anyway. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Wisdom Sent: Wednesday, February 22, 2006 10:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mastr II Cabinet Hi All, I picked up a Mastr II Cabinet today (6 foot) it has what looks like a vending machine lock on the front and what looks like a bf10 lock but the bf10 key doesnt fit in. Anyone have any ideas what these might be ? High Security locks ?? Im going to drop them off at the locksmith's tommorrow and see if they can figure out the keys Any help is appreciated Thanks --Don Wisdom KD7WKF Yahoo! Groups Links Yahoo! Groups Links !SIG:43fd491081046304319221! Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Micor 375 Watt TLD5082 question?
I'd sure like to do the same. I've often seen the 250/375 Watt MICOR stations available for $100 or less (even at hamfests like Dayton). I remember checking on the price of the main PA plate line assembly for the 2-Meter range 1/4 KW MICOR VHF PAs back in the early 1990's - Motorola had only one piece left in stock in Schaumburg, and it was $900+ at the time. I've never been successful finding an original 140-150 MHz range hig-power MICOR station PA. I have one of these 155-MHz 375-Watt MICOR stations coming available locally soon, and would sure like to find a way to move it to 2-Meters. But both of my 2-Meter Repeater channels are in the 145 MHz range, which would be even more difficult than trying to move it down to the 147 MHz part of 2-Meters. No problem, of course, with the exciter, receiver, etc. - just this big PA deck. Hopefully someone, somewhere, someday will find a way to move these high-split 1/4 KW VHF MICOR PA decks down to 2-Meters! LJ -Original Message- From: Bryon Jeffers K0BSJ [EMAIL PROTECTED] Sent: Feb 22, 2006 9:44 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor 375 Watt TLD5082 question? I have a Micor 375 Watt station that has the TLD5082 high power PA. I have a fresh set of tubes in the station and on a commercial frequency (156.???) it makes good power, about 400 watts or so.. I have tried to get it to tune up on a 147.??? ham frequency but to no avail. I have heard of these going down with no problem but this one just won't do it. I of course checked MOL to see if the needed parts were available to convert it to the ham band (TLD5081) but they are NLA... Has anyone converted one of these to the ham band and if so what parts did you change? According to the manual the grid tuning cap and some other assorted coils are needed, but I would like to hear from someone that has made one of these work in the ham band... Thanks for your time! Bryon K0BSJ Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: NHRC-4 Controler
might be a little bit expensive, calling from the UK -Original Message- From: [EMAIL PROTECTED] Sent: Feb 20, 2006 4:04 PM To: Repeater-Builder@yahoogroups.com Cc: steve [EMAIL PROTECTED] Subject: Re: [Repeater-Builder] Re: NHRC-4 Controler I suggest that you call NHRC, they are available weekday evenings to talk to a live person. Check their web page for times. I just spoke to him last week about a question on the NHRC-4M2 and he was very helpful. 73, Joe, K1ike steve [EMAIL PROTECTED] wrote: Hi Mike I have tried a small amp on the contrroller tx A/F feed, can't hear anything, maybe the level insn't enough. When the CW id and programming OK tone is sent I take it the TX led should come on, on mine it dosn't. I have mailed NHRC but they take their time answering Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] UHF Micor Receivers WANTED
Have you tried ebay? Just in the last few weeks, there was a set of three - 406-420 MHZ rangeUHF MICOR mobiles that went for $10 for the set of three. Sometimes you have to go digging. LJ -Original Message- From: Steve Rubeck <[EMAIL PROTECTED]>Sent: Feb 16, 2006 10:22 PM To: Repeater-Builder@yahoogroups.com Cc: [EMAIL PROTECTED] Subject: [Repeater-Builder] UHF Micor Receivers WANTED Hello all, I am still looking for a source of Motorola Micor Range 1 receiver cards. 406-420 MHz. Id like to use these for repeater linking. Or does anyone have a source for any power, low split UHF 406-420 range Micor Repeater stations? I had a few contacts however still looking. HELP! Reply off list directly.Steve - KB9FMU What are the most popular cars? Find out at Yahoo! Autos <ZZZ!-- -- banner|**| html egp |**|begin><ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] UHF Micor Receivers WANTED
I guess I'm confused - I'm using a VHF MICOR mobile receiver (converted to 2-Meters) which is installed in a Spectra-Tac receiver chassis. I didn't see anything strange about the receiver when I installed it. I also used a UHF MICOR mobile receiver in another Spectra-Tac receiver chassisin a GE MASTR-Pro UHF Repeater (since I already had the MICOR receiver channel element crystalled up for the frequency I wanted.) Nothing unusual about either receiver that I noticed. Ialso had a 10-Meter MICOR receiver installed in a Spectra-Tac receiver chassis some years ago. LJ -Original Message- From: N9WYS <[EMAIL PROTECTED]>Sent: Feb 17, 2006 11:44 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] UHF Micor Receivers WANTED <ZZZ!--[IF !mso]> <ZZZ![ENDIF]--> Only thing about using mobile receiver sections in a SpectraTAC is that the mobile receivers do not have the preselector on the board itself. Otherwise, its plug and play Mark N9WYS From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: Friday, February 17, 2006 9:10 AMTo: Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] UHF Micor Receivers WANTED Have you tried ebay? Just in the last few weeks, there was a set of three - 406-420 MHZ rangeUHF MICOR mobiles that went for $10 for the set of three. Sometimes you have to go digging. LJ -Original Message- From: Steve Rubeck <[EMAIL PROTECTED]>Sent: Feb 16, 2006 10:22 PM To: Repeater-Builder@yahoogroups.com Cc: [EMAIL PROTECTED] Subject: [Repeater-Builder] UHF Micor Receivers WANTED Hello all, I am still looking for a source of Motorola Micor Range 1 receiver cards. 406-420 MHz. Id like to use these for repeater linking. Or does anyone have a source for any power, low split UHF 406-420 range Micor Repeater stations? I had a few contacts however still looking. HELP! Reply off list directly.Steve - KB9FMU<ZZZ!-- -- banner|**| html egp |**|begin> <ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Micor Recrystalled Element Problem
I see lots of the same kind of mentality around here. Many of the local hams that figure if a little gain is good, then a whole lot more must be a lot better. 40-watt PA decks driving 100-watt PA decks, receiver preamplifiers running wide open at high-RF sites, single-shield coax for jumpers, RG-8 type coax for feedlines, no isolators/circulators anywhere, etc. etc. Trying to explain or reason with them just falls on deaf ears, and I'm the Bad Guy. Then, after getting into a good repeater site, they continue to bring in (sneak in) more and more equipment (much more thn they had originally made arrangements for) without asking anyone who is actually involved with the site. Then they get kicked out of the site completely, ruining it for any hams who want to put up something in the same place (and do it properly!) in the future. Pretty sad LJ -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Feb 6, 2006 10:15 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Micor Recrystalled Element Problem Randy, I think the subject has been covered well enough already. Perhaps the best analogy would be a Hewlett-Packard power meter, where the sensor is matched to, and calibrated with, the meter itself. If the sensor should somehow be destroyed by accident, one could not simply purchase a new sensor and expect it to work with the existing meter. One must ship the meter and the sensor back to the factory for alignment and calibration. Like the crystal and the channel element, they are a matched pair. While I understand and respect the opinions of those who maintain that Amateur Radio transmitters can embrace a much more relaxed level of precision than commercial transmitters, I cannot help but wonder why this feeling is so pervasive. My personal feeling is that the public impression of Amateur Radio (notice the capitals!) is greatly enhanced when such installations meet or exceed the workmanship levels found in a typical commercial installation. Many others more vocal than I have lamented that some installations by Amateur Radio licensees have been so amateurish that they demean the name. I submit that an Amateur Radio repeater should always incorporate the State of the Art, with the appropriate bandpass cavities, isolators, filters, and components that will ensure a reliable, trouble-free installation. Moreover, I cringe when I hear that a substandard installation is okay, simply because it's only an Amateur Radio project! I congratulate you on taking the high road to correct the problem with your channel element. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Randy Nelson Sent: Monday, February 06, 2006 6:26 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor Recrystalled Element Problem I tried another channel element and the error was worse. Both the xtal and element are on their way back to ICM. It will be interesting to see if ICM admits an error or blames it on the element. Randy Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] cable length
I keep hearing about these "Z-Matchers". Who makes them, and are they expensive?
LJ
-Original Message- From: Eric Lemmon <[EMAIL PROTECTED]>Sent: Jan 23, 2006 9:06 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] cable length
Ian,
The cable length is more important on the TX side than on the RX side. However, since the impedances of the power amplifier output and of the duplexer TX input are seldom known with any certainty, it is impossible to know in advance what length that jumper cable should be. The TX jumper cable acts as a linear impedance transformer, depending upon its length in relation to the wavelength of the TX carrier. The chances that any random length of cable will result in a perfect match are slim.
The method I use is to make up a cable that fits the installation neatly, and then measure the power going to the antenna from the duplexer with a Bird wattmeter. Then I install an impedance matcher ("Z-matcher") at the output of the PA. If tuning the Z-matcher makes a significant improvement in the forward power, I know that the jumper cable is probably not the ideal length. I now have two choices: I can start experimenting with longer and shorter cables until I find the optimum length, or I can set the Z-matcher for the optimum setting and close up the cabinet, turn out the lights, and head home. Opinions vary greatly on this issue...
73, Eric Lemmon WB6FLY
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ian WellsSent: Monday, January 23, 2006 4:34 PMTo: Repeater-Builder@yahoogroups.comSubject: [Norton AntiSpam] [Repeater-Builder] cable length
Is it nessary to have the correct length coax from the diplexer to the rx and tx or is there a formular that can show the correct length .I am currently using RG223 coax for these links
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
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Re: [Repeater-Builder] Z matcher info.pdf
John - thanks for the info. So who makes these now that DB Products is no more? Cost?-Original Message- From: "John J. Riddell" <[EMAIL PROTECTED]>Sent: Jan 24, 2006 8:47 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Z matcher info.pdf Here is the "How to" sheet on the Z matcher. John VE3AMZZ matcher info.pdf <ZZZ!-- -- banner|**| html egp |**|begin><ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] STATION MASTER WHERE TO BUY
We ordered a 440-450 MHz Station Master antenna, and received a 406-412 MHz version. It was plainly stamped as 406-412 range on the antenna, yet we had a difficult time getting the dealer to take it back and send us the correct one. When we finally received the right one months later, we checked it out with our antenna analyzer to be sure. LJ -Original Message- From: [EMAIL PROTECTED] Sent: Jan 23, 2006 12:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] STATION MASTER WHERE TO BUY Be careful when buying from Tessco or anyone else for that matter. Make sure you check it out prior to putting it on the tower. I bought a newStationmaster for 2 meters about 2 years ago from them and didn't have time to check it out prior to installation. It resonates at 136 mhz. they said to send it back. The cost of rehiring the tower guys wouldhave cleaned that account out. So check it before it goes up. Gary K2UQ <ZZZ!-- -- banner|**| html egp |**|begin> <ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] STATION MASTER WHERE TO BUY
I'll check with our storeroom / ordering people to see if they still have the invoice.-Original Message- From: Kevin Custer <[EMAIL PROTECTED]>Sent: Jan 23, 2006 3:50 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] STATION MASTER WHERE TO BUY [EMAIL PROTECTED] wrote: We ordered a 440-450 MHz Station Master antenna, and received a 406-412 MHz version. It was plainly stamped as 406-412 range on the antenna, yet we had a difficult time getting the dealer to take it back and send us the correct one. When we finally received the right one months later, we checked it out with our antenna analyzer to be sure.Who was the Dealer?Kevin<ZZZ!-- -- banner|**| html egp |**|begin><ZZZ!-- -- banner|**| html egp |**|end><ZZZ!-- -- banner|**| html egp |**|begin> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. <ZZZ!-- -- banner|**| html egp |**|end> YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] ACU-1000
Here is a link to the company that makes this unit. Works great for inop. Our County EMA has one. Very easy to use. http://www.jps.com/index.asp?node=88 Jim Duram, K8COP EC/RO Muskegon County, Michigan Communications Officer, Muskegon Co., MI. mail2web - Check your email from the web at http://mail2web.com/ . Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] SpectraTac receiver on 12v
I have a 2-Meter Repeater that was originally an old MICOR Ma Bell VHF Mobile Telephone Transmitter - it never did have a receiver installed in it. I converted the transmitter to 2-Meters, then came up with a Spectra-Tac receiver chassis (which has a MICOR receiver, that I also converted to 2-Meters) to use as the Repeater Receiver. This particular Spectra-Tac chassis doesn't have an internal AC supply, so I run it off of the main MICOR AC supply that powers the PA Deck, etc. - this AC supply is the one with the number something like TPN1106B, I think - not the MICOR switching supply. No problems with hum or anything else, and the receiver RF shielding is so good, that talking to it on the bench with a handheld radio (with no antenna connected to the Spectra-Tac), it's a little bit noisy! Definitely a fine Repeater receiver. Larry -Original Message- From: Kevin Berlen, K9HX [EMAIL PROTECTED] Sent: Jan 15, 2006 10:11 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] SpectraTac receiver on 12v I believe that all of the power supplies for these receivers have a 12V input on them. This input is intended to be supplied from a battery, and there is very poor filtering on it. Make sure if you use this input that it is supplied from a well filtered supply. I once made the mistake of running one of these from the high current output of a Mastr II station PS, and had bad hum and noise until I figured out what was happening. 73, Kevin, K9HX At 12:21 AM 1/16/2006, you wrote: Is it possible to operate SpectraTac receivers on 12v easily? I don't have a manual for the unit so I'm unsure what the specific connections are for. The two VHF units I have exibit a slight 60Hz hum in the audio. I'd like to try running them on 12v to isolate the built in supply as the problem. Thanks Steve Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] OT - funny interference story
Back around 1990, we were having a problem on VHF with an interfering signal that drifted ever so slowly back and forth across 2-Meters and the VHF business band. One of the radio techs in our radio shop had a 2-Meter Repeater nearby, which would wind up being keyed up for long periods of time with a dead carrier as this interfering signal slowly drifted across the repeater's input frequency. He got out an IFR Service Monitor, and tracked the signal to an apartment building about two blocks away from the radio shop. He then contacted the FCC, and they contacted the apartment building Manager. We met about 9:00 A.M. a few days later, at the entrance to the apartment building with the apartment Manager, the FCC Inspector, and the IFR. After contacting the residents that were still in the building (many had already left for work for the day), we went to the main electrical panel for the building and started shutting off circuit breakers to sections of the building. One breaker made the interfering signal go away, so that narrowed it down to just a few apartments on one upper floor. We knocked on the door of the first apartment, and the Resident let us in after the apartment Manager explained who we all were, and what we were looking for. We unplugged just about everything in the apartment, but the signal remained. We then went to the apartment across the hall. No one was home, so the apartment Manager opened the door with his master key, and we all went in. The first thing we tried was unplugging the aquarium heater, since they're often such a terrible electrical noise maker, but the signal was still there. Nothing else that we unplugged seemed to make the interfering signal stop, until we unplugged one AC cord going to something on the stereo system. It was an amplified FM antenna, which was a unit about a foot tall. The gain control on it was cranked up to about 8 out of 10, causing it to go into oscillation and radiate over a wide area. The FCC Inspector unplugged it completely, coiled up the AC power cord, and left it on a living room chair with some very important-looking paperwork which basically said DO NOT USE, CONTACT US IMMEDIATELY. The apartment manager promised to follow up with the owner of the unit with the details of our visit. The problem never returned! Larry -Original Message- From: JOHN MACKEY [EMAIL PROTECTED] Sent: Jan 10, 2006 5:00 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] OT - funny interference story This is a funny story from the Broadcast Engineering mail list... -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ron Castro Sent: Tuesday, January 10, 2006 12:31 PM To: Broadcast Radio Technical Forum Subject: Re: [RT] Re: Local interference issues and lawyers We had a case many years ago here in Santa Rosa where an FM station moved its transmitter and a neighbor, who was a wealthy doctor, started complaining of major TV interference on all channels, and he demanded that the station stop transmitting and go away. The station owner could see that doctor's TV antenna was in very poor condition, and he offered to replace it for free, the was turned down. The doctor complained bitterly and regularly to the FCC until an inspector finally came out. The inspector pronounced the FM station clean, but he could see some other source of local interference in the area on his spectrum analyzer. Turns out it was the doctor's Radio Shack pre-amp on his broken-down antenna that had gone into self-oscillation and was cleaning out the whole neighborhood! By this time, the FCC had such a craw-full of the doctor that they issued him an NAL for causing interference. Ron Castro Chief Technical Officer Results Radio, LLC Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: Fwd: RE: [Repeater-Builder] ACC RC-96 Controller (was GE-Mastr II Audio Problem)
Hi Mike - I've had no problems using an SM-100 Shackmaster (I have a couple of them) and the TS-440S. It's just that the SM-100 is good for what it's intended to do, but it's not a real Repeater Controller - it's more of a Ham Shack controller. I want to use the RC-85 to run a normal UHF Repeater, with the Remote Base port being the TS-440 HF Rig, which is what it was supposedly designed to do. I've also used the Shackmaster with my ICOM IC-751A. It's just the TS-440 and and an RC-85 controller that I'm not able to get all the documentation on how to do. The TS-440 HF transceiver support was added to the RC-85 (and RC-96) starting with Version 5 firmware. But no one seems to know how to do it. It looks like when ACC got out of the Repeater Controller business, they just dropped everything completely. I've even tried writing a letter to the original company owner, with no response. No luck on the ACC mailing list, either, I try about once a year. I've also tried to find info from Link Comm, who took over some of the ACC support. Nothing. 73 and Happy New Year! Larry -Original Message- From: N5FL [EMAIL PROTECTED] Sent: Jan 2, 2006 11:52 PM To: Repeater-Builder@yahoogroups.com Subject: Fwd: RE: [Repeater-Builder] ACC RC-96 Controller (was GE-Mastr II Audio Problem) Larry, I ran a TS-440 on my ShackMaster. On the SM-100, you have to select Kenwood HF as the interface and configure the correct data clock lines to drive it. I think it is only available in later firmware releases. If the 96 (or 85) does not have this set up option, I'm skeptic it will drive the TS-440. Mike Roden - [EMAIL PROTECTED] - Alpharetta, GA Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] ACC RC-96 Controller (was GE-Mastr II Audio Problem)
Eric - could that board in your RC-96 possibly be the optional Serial board that was offered by ACC for the RC-96 controller? I have a couple of RC-85's, and I have been listing requests for help over the last few years on the ACC mailing list for some help in getting one to function with a Kenwood TS-440S HF Transceiver (with no luck). According to the RC-85 Manual, both the RC-85 and the RC-96 (if you have the optional Serial board for the '96) can control a TS-440S HF Rig. I've never been able to find anyone who actually did this with the RC-85 - the documentation leaves a lot to be desired. So I've been keeping my eye open for an RC-96 if it has that optional Serial board, but I think that finding one will be about as possible as getting the RC-85 to do the same job, which doesn't need any extra boards. HF rig control may be one of those Features that ACC figured no one would ever use (like RC-850 Antenna Rotor control, until I bought all the extra boards later, at lots of $$$.) I don't have my ACC documentation here at home, so I can't give you a model/part number for that optional Serial board. Larry -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Jan 1, 2006 11:59 AM To: [EMAIL PROTECTED] Cc: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] ACC RC-96 Controller (was GE-Mastr II Audio Problem) David, I took the lid off of my spare ACC RC-96 controller, and I saw the same daughter board you mentioned. My RC-96 manual shows the U-33 socket to be occupied by a PAL10L8 chip, with no mention of a daughter board and the additional 74HC74 chip- which is a digital divider. The PAL10L8 is a bipolar programmable logic array IC, also a digital device. In my RC-96, there is a wire running from the daughter board over to the DIN connector for the control receiver. The schematic diagram does not show any audio signals going to or from socket U-33, so I am thoroughly confused by your statement about fuzzy audio coming out of the board. I'd sure like to know what the extra board does, and why it wasn't documented in the manual. Perhaps someone on the Repeater-Builder site can provide the answers...? 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of drwoolweaver Sent: Sunday, January 01, 2006 10:33 AM To: [EMAIL PROTECTED] Subject: [GE Mastr II] GE MASTR II audio problem My club has a GE MASTR II mobile modified repeater controlled by an ACC96. The ACC96 has a small satellite board plugged into socket U33 on the right side of the main board. There are two chips on the board: SN74HC74N and PAL10L8NC. Transmit audio is good going to the small satellite board, but fuzzy coming out. Anyone know a source for replacement chips? Any thoughts on trouble shooting? Anyone know the exact purpose of the small satellite board? Any help appreciated. David Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] GE Mastr II UHF Receiver
Looking for a new (used) one to replace this one until I can get the bad one repaired. Want to get the link back up and going ASAP. Thanks, Jim mail2web - Check your email from the web at http://mail2web.com/ . Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Intermod program
I'm looking for a decent intermod program. I'm aware of the one from EMR called IMCALC, but don't particularly care for it. Anything else out there? I poked around with Google, but didn't have much luck.ChuckWB2EDV YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Motorola Mobile Micor - T43RTN3190B Need Repairs
I have an extra VHF MICOR Mobile Radio Service Manual available, P/N 68P81008E40-G. I was getting it and a few other items ready to put on ebay. It has the original plastic 3-ring binder, it's big and it's heavy! Larry [EMAIL PROTECTED] -Original Message- From: Kevin Custer [EMAIL PROTECTED] Sent: Dec 28, 2005 4:42 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Motorola Mobile Micor - T43RTN3190B Need Repairs While there is a limited amount of tune-up information available on the web, a real manual is the right way to go. eBay has them from time to time. The manual number is 68P81008E40-X The X can be any letter, the higher, like P the later the manual, but it doesn't really matter. Kevin Timothy V Horvath wrote: Meter Yes, Manual no. Can I get what I need from web site? On Tue, 27 Dec 2005 21:59:56 -0500 Kevin Custer [EMAIL PROTECTED] writes: Do you have a manual and a test meter? Timothy V Horvath wrote: No I'm not. I'd say the transmitter/power amp is spurious. Are you sure it is tuned correctly? Kevin Tim Horvath wrote: I have 2 of these units converted for 2 meter repeater use and both have problems. I'm located near Daytona beach Florida. Is there anyone near this area that repair these radios? #1 unit, has static noise when in transmit with nothing connected (audio, contoller). #2 unit, when it unkeys it pulls about 4 Amps, sometime for 10 seconds or maybe 30 min. as if a relay is sticking?? Any Ideas. I would like to find someone near me to take it to for repair. Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge
Who makes a Return Loss Bridge? Any idea of the approximate cost? LJ -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Sent: Dec 21, 2005 7:42 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge Gary, A return loss bridge (RLB) is an extremely useful tool for tuning the pass function of a BpBr duplexer. That's because the bandpass response of each cavity in a BpBr duplexer is very subtle- nothing like the peak you will see in a bandpass-only cavity. Even when three BpBr cavities are in series, the bandpass response is rather wide. An RLB allows any good spectrum analyzer to emulate the reflection capability of a vector network analyzer to a sufficient degree that bandpass tuning can be much more precise. Instead of viewing the transmission bump, you can view the reflection notch- which is very sharp. With such a clear indication of the bandpass tuning, the cavity can be tuned within a few kHz of the exact pass frequency. It is essential that all interconnecting cables and connector cables be of very high quality, and the spectrum analyzer's reference oscillator be on frequency. It takes some practice to use an RLB correctly, but it can allow you to tune a duplexer with remarkable precision. 73, Eric Lemmon WB6FLY Quoting [EMAIL PROTECTED]: Gentlemen, Will be starting a new science project setting up Wacom 641 on 2 meters. Have a Rohde Schwarz monitor receiver with S meter, DB pads, dummy loads etc. Plus an IFR 1500. But I see comments on a unit called a 'return loss bridge' for the IFR. How important is this return loss bridge and what is it's claim to fame? Do I really need one? Also have an old HP 8554B Spectrum Analyzer. Thanks, Gary K2UQ Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Old duplexer tuning question
I'm assuming that if the old RG-8 cables are being replaced with RG-214 cables that are the same length, that the velocity factors of both types of cable are the same. -Original Message- From: Bob M. [EMAIL PROTECTED] Sent: Dec 19, 2005 7:10 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Old duplexer tuning question New cables will be a lot more flexible, and with RG214's double shield, they should work better too. It's tempting to use the coax and TEE fitting as a handle when picking the unit up - don't do that ! I found that the connectors added exactly 1/2 inch to the cable length PER CONNECTOR, so you would want to cut the coax 1 inch shorter than the final lengths of 11-1/2 and 12 inches. I solder the center pin, rather than crimping it. Not too many analyzers will be able to go down to the 100+ dB that these duplexers are capable of providing. That's one reason why they tell you to tune each section separately. I did find that if I use my signal generator at a fixed frequency, rather than the sweeping tracking generator, I can tune the spectrum analyzer to the same frequency and crank down the filters. I can barely see the sig gen around 120dB down or more, on the final configuration. As others have mentioned, if your equipment does not provide a good 50 ohm impedance, you should use 6-12dB pads on each line connected to the section you're tuning. Of course, adding this attenuation pushes the signal even further down into the noise, but it should not be a problem on any single section. Use as much signal from the tracking generator as possible (i.e. +10dBm or more). The resulting notch from the entire duplexer will appear to be quite wide, even though the individual section notches are quite narrow. Good luck with it in the morning when it's warmer. Bob M. == --- tony dinkel [EMAIL PROTECTED] wrote: All, thanks very much for the input. I was already in the process of rebuilding the interconnects to RG-214 with crimp on RFS connectors as a punt. That old RG-8 was hard as a rock. I also think my problem with the notches is that I do not have enough dynamic range on my ifr 1600 to see the bottom. It works ok on the individual cavities but once I combine the whole circuit thats when it mushes out. I think I will get this thing knocked out in the morning. This place is getting dark and cold. Thanks, td wb6mie __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
