Re: [Repeater-Builder] ariels
Ariel? Antenna maybe? C'mon guys. D On 29/08/2010 18:06:09, Steve (steve.m1...@tiscali.co.uk) wrote: What freqs, and what tx pwr ? - Original Message - From: antony antonyebu...@hotmail.com To: Repeater-Builder@yahoogroups.com Sent: Sunday, August 29, 2010 10:34 AM Subject: [Repeater-Builder] ariels using two radios as a repeator with two ariels. how far appart would the ariels be best. thanks antony Yahoo! Groups Links Yahoo! Groups Links
Re: [Repeater-Builder] Re: Wouxun Radio
Yes but depends where you are and at what license levelworld wide thing! D On 29/08/2010 20:01:41, Glenn Little WB4UIV (glennmaill...@bellsouth.net) wrote: What is it that these licensed hams do not understand about using equipment in the ham bands??? You can build your own equipment (remember those days?). There is NO type acceptance for amateur equipment. There are limitations as to how much you can build or modify in a year to cut down on amateur equipment being used in other services (CB). There is no FCC approval for ham use. If commercially made it must meet part 15 requirements to be sold. QED 73 Glenn WB4UIV At 01:49 PM 8/29/2010, you wrote: I would not want to put one on PS or commercial freqs, amateur only. Would it be OK for amateur? The only reason I ask is I do not want to put my amateur and GROL licenses in jeopardy (worked way to hard for them) if I purchase one and transmit on amateur frequencies. For PS and commercial (only when doing maintenance on one of their systems), I only use FCC approved equipment. --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Doug, You make some very good points, but let's not forget that the proof of FCC approval is not merely a paper label stuck on the radio; there must be a TCB or TA grant published on the OET Web site that lists that specific radio by model number, emission, and frequency range. The FCC is currently investigating the influx from China of cheap portables bearing Puxing, Linton, HYT, and Wouxon brands- some of which have labels that read FCC TYPE ACCEPTED but without an FCC ID number, and no basis in fact of receiving a grant. Indeed, some of these radios share the same internals even though the outside
Re: [Repeater-Builder] Coax length
Hi Kevin and all who responded to my question. Thank you, good info in the link provided by Kevin along with other interesting guidelines. More for the file. Regards, Doug - GM7SVK On 04/08/2010 11:04 PM, Kevin Custer wrote: Doug Hutchison wrote: Does the length of coax connecting cable between repeater and filters matter? Yes - and no. Please read the note about cabling lengths between the repeater and the duplexer in the section on page 4 of the following document: http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions-remec.pdf Watch for word wrap... Kevin Custer Yahoo! Groups Links
Re: [Repeater-Builder] Hygain in Starkville MS
http://hamwave.com/cgi-bin/index.cgi?action=printtopicid=2243 Doug On 04/08/2010 18:53:26, Gary W. Gibbs (ke5...@yahoo.com) wrote: I'm almost positive Mfj bought them.When I placed a catalog order hygain was one of the catalogs I received. NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device From: Tim tahr...@swtexas.net Sender: Repeater-Builder@yahoogroups.com Date: Wed, 04 Aug 2010 08:02:45 -0700 To: Repeater-Builder@yahoogroups.com ReplyTo: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hygain in Starkville MS Didn't MFJ buy them? Seems when I was working on my Ham IV, they were one of the places I could order parts from. Tim [Image] Your email settings: Individual Email|Traditional Change settings via the Web [link: groups.yahoo.com/group/Repeater- Builder/join;_ylc=X3oDMTJlNmZmdTl0BF9TAzk3NDc2NTkwBGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDc3RuZ3MEc3RpbWUDMTI4MDk0NDQyNw- -] (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest [link: mailto:repeater-builder-dig...@yahoogroups.com?subject=email Delivery: Digest] | Switch to Fully Featured [link: mailto:Repeater-Builder- fullfeatu...@yahoogroups.com?subject=change Delivery Format: Fully Featured] Visit Your Group [link: groups.yahoo.
[Repeater-Builder] Coax length
Does the length of coax connecting cable between repeater and filters matter? Doug
Re: [Repeater-Builder] Hygain in Starkville MS
Ouch... D On 04/08/2010 20:42:43, Lee Pennington (localjunkpedd...@gmail.com) wrote: Telrex didn't fall into the Mighty Fine Junk category! de Lee K4LJP 73 On Wed, Aug 4, 2010 at 3:21 PM, David Jordan wa3...@comcast.net [link: mailto:wa3...@comcast.net] wrote: MFJ bought both Cushcraft and Hy-GAIN…too bad the didn’t grab Telrex before they went under ;-( - From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com [link: mailto:repeater-buil...@yahoogroups.com]] On Behalf Of Tommy Dow Sent: Wednesday, August 04, 2010 2:44 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Hygain in Starkville MS MFJ bought Cushcraft. Tom Subject: Re: [Repeater-Builder] Hygain in Starkville MS Yes, MFJ bought Hygain. WA Brown -- Always drink upstream from the herd. [Image] Your email settings: Individual Email|Traditional%0 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Coax length
I will do sir, thank you Kevin. Doug On 04/08/2010 23:04:07, Kevin Custer (kug...@kuggie.com) wrote: Doug Hutchison wrote: Does the length of coax connecting cable between repeater and filters matter? Yes - and no. Please read the note about cabling lengths between the repeater and the duplexer in the section on page 4 of the following document: http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions-remec. pdf Watch for word wrap... Kevin Custer Yahoo! Groups Links
Re: [Repeater-Builder] OT- Dispatcher injured by lightning strike
What concerns me more than anythingso many experts yet this sort of thing still happens...(in many fields)!!! Hindsight is great!! D On 01/08/2010 17:24:18, Chuck Kelsey (wb2...@roadrunner.com) wrote: Care to hazard a guess on the percentage of facilities (radio/tv, two-way) that aren't done right? A few years ago this happened near here - a radio personality wearing headphones taken to the hospital following a lightning strike to the tower outside the radio station. Chuck WB2EDV - Original Message - From: Eric Lemmon wb6...@verizon.net To: Repeater-Builder@yahoogroups.com Sent: Sunday, August 01, 2010 11:42 AM Subject: RE: [Repeater-Builder] OT- Dispatcher injured by lightning strike Whenever I read a report like this, I have mixed emotions. I am surprised that the injury occurred, which is impossible if the facility was properly designed and islanded in accordance with numerous standards, including NFPA 70, NFPA 780, and the Motorola R56 Manual. I am also angry that an official issued the statement that ...the communications system, including its 400-foot radio tower, are grounded in accordance with industry safety standards. That official, and the idiots who designed the communications center, should be fired and/or brought up on criminal charges. The key to a safe installation
Re: [Repeater-Builder] OT- Dispatcher injured by lightning strike
Yup.we are only a number after all!! D On 01/08/2010 18:04:12, Chuck Kelsey (wb2...@roadrunner.com) wrote: And I only see it getting worse as everyone 'has' to cut corners/costs. Chuck WB2EDV - Original Message - From: Doug Hutchison specialq@ntlworld.com To: repeater-builder@yahoogroups.com Sent: Sunday, August 01, 2010 12:53 PM Subject: Re: [Repeater-Builder] OT- Dispatcher injured by lightning strike What concerns me more than anythingso many experts yet this sort of thing still happens...(in many fields)!!! Hindsight is great!! D On 01/08/2010 17:24:18, Chuck Kelsey (wb2...@roadrunner.com) wrote: Care to hazard a guess on the percentage of facilities (radio/tv, two-way) that aren't done right? A few years ago this happened near here - a radio personality wearing headphones taken to the hospital following a lightning strike to the tower outside the radio station. Chuck WB2EDV - Original Message - From: Eric Lemmon wb6...@verizon.net To: Repeater-Builder@yahoogroups.com
RE: [Repeater-Builder] OT- Dispatcher injured by lightning strike
Yup...thats just what I mean...experts.bah humbug!! D On 01/08/2010 19:44:48, Eric Lemmon (wb6...@verizon.net) wrote: That is so true! When you add corporate ego to the mix, things get really murky. A case in point: Back in the mid-eighties, one very large and well-known computer equipment manufacturer was contracted to install some facility monitoring equipment at Space Launch Complex Six at Vandenberg AFB, a site that was to be (until the Challenger disaster) the west-coast Space Shuttle launch pad. The monitoring equipment was divided into two major pieces, on separate floors of the Launch Control Center and about 200 feet apart. From the moment the system was energized, a number of data channels had 60 Hz common-mode noise corrupting the data on the RS-422 circuits. My crew was attempting to investigate the noise issue, when we discovered that the supplier's technicians had deliberately floated the upstairs cabinets by using insulating washers and plastic sheets to avoid contacting any grounded facility items such as embedded rebar. When advised by our AHJ (Authority Having Jurisdiction) inspector that the installation violated Article 250 of the NEC, the manufacturer's engineer explained that this was the way his company did these installations, and- here's the corporate ego part- they had been doing%2
Re: [Repeater-Builder] Fw: TKR750 -Preamp
Hi Ed, Understood, was just coincidental that you message popped up as was looking at potentially adding a pre-amp to my repeater which is not at a great height nor ever likely to be - long story. Have tried a few from very good kit form to general purpose broad banded variable types with little improvement and as you say managed to overload the front end. There was a fellow ham over here who was making pre-amps to order but he seems to have suffered the fate of many small businesses in the financial downturn. Although not expensive in themselves, if I bring something in from the US, postage, insurance and value added tax soon bumps the cost up. I'll probably just stick with what I have without adding extra problems. Thank you for your input and advice, always appreciated. Best regards, Doug - GM7SVK - Glasgow - Scotland On 30/07/2010 2:26 AM, Com/Rad Inc wrote: Hello Doug Pre amplifiers are nifty gadgets. In my email I am seeking some personal references about this particular radio and a pre-amp which may have been tried wioth some level of success. When you start inserting GAIN ahead of a front end you have to be careful of overloading the system and introducing harful side effects. In very densly congested sites ( lots o f transmitters ) you may havdet ocomprimise the sensitivity of the reciever for selectivity. Crystal filter may help - I have found using a receiver with a tight front end and / or sufficient preselection will triumph over trying to make a lesser piece of equipment work. Example a GE Mastr III is a super reciever - In my case I am trying to set up a clients 2 recievers with a little additional sensitivity - we are using this equipment in a remote site away form other forms of interference ( boondock tower site ). Some manufacturers are ARR and EMR - EMR makes a bi-polar amp with variable gain. ARR also has a fixed gain version - ARR was very popular with GaS fet low noise stuff for 800 Mhz - used a lot of them - exccellent results. Costs $100 thru $350 Best r egards Ed Folta Com/Rad INc - Original Message - *From:* Doug Hutchison mailto:specialq@ntlworld.com *To:* repeater-builder@yahoogroups.com mailto:repeater-builder@yahoogroups.com *Sent:* Thursday, July 29, 2010 12:30 PM *Subject:* Re: [Repeater-Builder] Fw: TKR750 -Preamp Where does one obtain these and at what cost? Doug On 29/07/2010 15:58:54, Ken Arck (ah...@ah6le.net mailto:ah...@ah6le.net) wrote: At 04:30 AM 7/29/2010, Com/Rad Inc wrote: ubject: TKR750 -Preamp Greetings Group Have any of you experimented with a RX pre-amp for the TKR 750 repeater? I am seeking results of actual trials of a product - Anyone care to comment on their experience(s) ? We use AngleLinear PHEMT preamps all the time on TKR- 750's that we sell. They work very well without overloading the front end as many of the higher gain ones on the market do (generally, 12 to 15 dB is all that is needed in a receiver system, not the 20 to 24 dB some preamps deliver. Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em! Yahoo! Groups Links
RE: [Repeater-Builder] Repeater transmit levels at the receiver?
Sounds like someone has been watching The EnforcerMr Eastwood.every man has got to know his limitations? Soory could not resist!! D On 30/07/2010 22:35:35, Jeff DePolo (j...@broadsci.com) wrote: I wonder how many of the -53 naysayers have or have used a Cushman CE-3? LOL! The folks that have looked at the output of one of these on a spectrum analyzer will get it. K Where I come from, we call that a comb generator, not a signal generator... Ya gotta know the limitations of your test equipment. I recently went several rounds via telephone with a friend of mine who was trying to troubleshoot an apparent desense problem on the bench involving a Mastr II and a 6-cavity DB Products duplexer that I had tuned up for him on the VNA. Long story short, it turned out that when he was doing the desense test using his service monitor (R2600?) as the dummy load and signal source simultaneously that the sig gen would go spurious and result in apparent desense. When he finally did a lossy tee test using an external dummy load, no desense, and likewise when hooked up to the antenna at the site, no desense. --- Jeff WN3A Yahoo! Groups Links
Re: [Repeater-Builder] Fw: TKR750 -Preamp
Where does one obtain these and at what cost? Doug On 29/07/2010 15:58:54, Ken Arck (ah...@ah6le.net) wrote: At 04:30 AM 7/29/2010, Com/Rad Inc wrote: ubject: TKR750 -Preamp Greetings Group Have any of you experimented with a RX pre-amp for the TKR 750 repeater? I am seeking results of actual trials of a product - Anyone care to comment on their experience(s) ? We use AngleLinear PHEMT preamps all the time on TKR- 750's that we sell. They work very well without overloading the front end as many of the higher gain ones on the market do (generally, 12 to 15 dB is all that is needed in a receiver system, not the 20 to 24 dB some preamps deliver. Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em! Yahoo! Groups Links
Re: [Repeater-Builder] Fw: TKR750 -Preamp
Thank you both. Doug On 29/07/2010 19:34:24, Steven M Hodell (st...@shodell.net) wrote: Another very good choice for this application is the GLB Preselector / Preamp from Simrex Corp. I have several of these deployed on 144 / 220 / 440 Amateur repeaters and they all perform very well. They can be tuned to maximize gain or selectivity per your requirements and their support is outstanding. http://www.simrex.com/site/products/special.htm PRESELECTOR PREAMPLIFER * Low cost solution to interference, intermodulation and desensitization problems. * Helical Resonator Design. * Preselector Specifications [link: preselector/Preselector1.pdf](pdf 63k) * Preselector Example Diagram [link: preselector/preselector_diagram. pdf](pdf 10k) - Original Message - From: Ken Arck [link: mailto:ah...@ah6le.net] To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 29, 2010 2:15 PM Subject: Re: [Repeater-Builder] Fw: TKR750 -Preamp At 10:30 AM 7/29/2010, Doug Hutchison wrote: Where does one obtain these and at what cost? http://www.anglelinear.com Chip Angle is arguably one of the top 10 RF guys in the world Ken -- President and
Re: [Repeater-Builder] Re: TKR-750 RF Preamplifiers
Some man sir..TU Doug On 29/07/2010 22:31:49, skipp025 (skipp...@yahoo.com) wrote: Re: TKR-750 RF Preamplifiers Com/Rad Inc com-...@... wrote: Have any of you experimented with a RX pre-amp for the Kenwood TKR-750 repeater? Yeah, once or twice... I am seeking results of actual trials of a product - 'bout killed myself once trying a Thighmaster... Anyone care to comment on their experience(s) ? Hurt a lot in the groin area and took a while to heal. Thanks in advance Ed Folta Where and what you do with a preamp should depend on the location, application and duplexer (antenna system). In most casual situations (not a a major comm site with other adjacent repeaters and a broadcast station or two nearby) pretty much any type of decent preamplifier works very well. I like the ARR Preamplifiers because they work well and are often found fairly cheap on Ebay. The old GLB (now owned by someone else) are very good layouts for busy locations. Other people have told you about Angle Linear and I'll throw in both Telewave and Hamtronics as a source. Everyone wants to dance and sing about GasFet and Phempt device preamplifiers but there is more than a valid ca
Re: [Repeater-Builder] Re: Controller recommendations
No problem Bob and thank you, hopefully assisted with the original request. Take care, Doug - GM7SVK On 18/07/2010 15:07:51, n...@no6b.com wrote: At 7/17/2010 19:04, you wrote: At 7/17/2010 14:04, you wrote: I have no interest here...but why just say it can be reprogrammed without explaining how. Thought the hobby was about communicationsometimes I wonder! What explanation? Sorry - at first read I thought this was a complaint about providing an explanation when none was requested. The only 4th column digits the RLC-1 uses are for the 1st digit of all default command names, which is C, for programming macros. For the former, simply change the command names for all 42 commands to something that doesn't use the 4th column. This can be done via the serial port or by using a radio that does have 16 button DTMF capability. Unfortunately I don't see a way around needing a 16 button pad to program macros, so strictly speaking my statement saying the RLC-1 not needing the 4th column is incorrect. But since the RLC-1 only has 7 macros it's not something you'd do very often. I haven't sent a 4th column digit to my RLC-1 in over 10 years. Bob NO6B Yahoo! Groups Links
Re: [Repeater-Builder] Re: Controller recommendations
I have no interest here...but why just say it can be reprogrammed without explaining how. Thought the hobby was about communicationsometimes I wonder! D On 17/07/2010 20:38:14, n...@no6b.com wrote: At 7/16/2010 23:41, you wrote: Steve, Based on your request about using your 12 button DTMF mic, I would recommend the Arcom RC-210. I have a few of the Arcom RC- 210's, a couple Link-Com RLC-1's and a couple of the ICS Linker IIa controllers in our system. They all work great and the programming is about as different between the units as possible. The Arcom programs great with both the RCP Software and DTMF. The Link-Com RLC-1 can be programmed via a serial connection but is pretty clunky. It programs very easy with DTMF but does require the use of the A, B, C, and D tones. Not true - the RLC-1 can be reprogrammed to use only 12 digits. I have one in my system control it with a 12-button DTMF mic. Bob NO6B Yahoo! Groups Links
Re: [Repeater-Builder] Antenna Advise
Devils advocate..explain what you mean? Perhaps the fellow/lass knows not what you imply? On 17/07/2010 23:18:34, Gareth Bennett (gare...@es.co.nz) wrote: What about the receive side of the equation? ...After all the mobile still needs to access the repeater in the first place. Cheers Gareth Bennett RadioSystems Limited P.O. Box 5202 Dunedin 9024 New Zealand gare...@radsys.co.nz - Original Message - From: w6ghz [link: mailto:ryo...@sonic.net] To: Repeater-Builder@yahoogroups.com Sent: Sunday, July 18, 2010 10:41 AM Subject: [Repeater-Builder] Antenna Advise Hello Group, Thank you for being here and reading this. I am new to this group and need antenna advise for a repeater system I am attempting to build. My electronics skills are very limited, but I know enough to assemble a system and get it on the air. This system consists of two repeaters linked by one controller in the same enclosure: 1) Motorola Micor vhf w/140W amp 2) GE Master Exec II uhf w/250W amp If one asks why I'm considering this much power, the reasons are: 1) The amps are available. 2) The terrain this system will be operating in is hilly with a lot of trees and vegetation. 3) The system is not on a hill top. 4) The antenna(s)for thi
Re: [Repeater-Builder] Controller recommendations
Hi Rick, Have a look here and give Ken a call, number is on the page. http://www.arcomcontrollers.com/ Doug On 16/07/2010 5:30 PM, Rick Szajkowski wrote: I have RLC's and RC-210's both are very good controllers .. the Arcom RC-210 is very will supported and if you want a good controller I would go that route .. not to say the RLC's are not good I went back to my 2A and love it .. the RLC does the 220 repeater Rick On Fri, Jul 16, 2010 at 1:25 PM, Steve Jones steve.jo...@rogers.com mailto:steve.jo...@rogers.com wrote: I forgot two items which will affect my choice: 1) Control codes cannot contain the DTMF codes A,B,C or D since I don't have a radio with the full 4x4 keypad. 2) The Quantar will probably have to be left setup as a repeater in order to pass the P25. The controller would only need to key the repeater for link audio and repeater messages. -- Steve steve.jones at rogers.com http://rogers.com
Re: [Repeater-Builder] Re: Silver plating of cavities advice please?
`No NO NO hang on to thatworth a few pounds...later!! Doug On 12/07/2010 18:11:33, STeve Andre' (and...@msu.edu) wrote: OK then, how about a 1919 threepence piece? ;-) On Monday 12 July 2010 14:04:22 Dave wrote: and a silver dollar Good Lord man I'm English! --- In Repeater-Builder@yahoogroups.com, Barry ate...@... wrote: If you have a stable dc supply some chemicals to make a pickle solution and a silver dollar the rest is easy google is very useful by the way -- STeve Andre' Disease Control Warden Dept. of Political Science Michigan State University A day without Windows is like a day without a nuclear incident. Yahoo! Groups Links
Re: [Repeater-Builder] Re: Silver plating of cavities advice please?
Skipp, Did you ever work with Rowan and Martin?!! Very good as usual. Doug On 11/07/2010 14:21:32, skipp025 (skipp...@yahoo.com) wrote: Dave dave_g7...@... wrote: Hi All, I have rescently obtained a uhf pair of cavities that are not silver plated inside (bare copper) They both have an insertion loss of 3dB In this example the 3dB insertion loss is not is not affected (to any significant value) by the lack of silver plating. If I were to get them silver plated what would the improvement be? The person/business you pay to complete the plating has an improved income. I have no idea how much it would cost but if the saving was only about 0.5dB I wouldn't bother. Don't bother... Your thoughts please? I try not to have any... Cheers Dave UZN Never watched the show and I believe it was on the UPN out here. :-) On a more serious note... you might look around for pictures and descriptions of the very famous Motorola T-1500 series of cavities often made into various combination of duplexer assemblies. They are not plated and they work very well. The insertion loss is set by the probe type and position. s. %0
Re: [Repeater-Builder] help and suggestions interference issues
Yes Doug, Sent a recording off list but you have I think hit the nail on the head as am sure CTCSS is not applicable to D-Star as you say. A strong D-Star signal would get into the RX though, despite CTCSS, I think but cannot prove it as no D-Star here. Doug - GM7SVK On 04/07/2010 17:57:16, Doug Bade (k...@thebades.net) wrote: If it is in fact D-Star...I would think the most likely cause would be someone analog-ly crossband repeating from a D-Star frequency into your input with the needed ctcss. To my knowledge, no Icom D-Star radio allows for ctcss along with the data as it would corrupt it. It could be done with a hybrid connection between digital and an analog programmed radio however I would say it would be intentionally malicious at that point as ctcss and D-Star do not mix.. Here is a link to an MP3 of what D-Star sounds like on an analog receiver. http://www.w2sjw.com/sounds/D-STAR.mp3 [link: www.w2sjw.com/sounds/D- STAR.mp3] Doug KD8B terry_wx3m wrote: DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com [link: mailto:
Re: [Repeater-Builder] Alinco DR-03T
Hi Andrew, Initially thank you for announcing the new box - cannot find it here yet. Have a DR-M03 obsolete (no T). It is OK as a link TXR, duty cycle might be a problem for repeater but a big enough cooler may solve that. Mine is 10w o/p, performs OK. Doug On 13/06/2010 20:30:33, vk4jv (vk...@bigpond.com) wrote: Hi Guys Has anyone used the new alinco DR-03T 10M rigs in a repeater ? I wish to get a 10M repeater going but have to use split sites and use UHF links between them... also.. any other ideas on radios to use ? cheers Andrew Yahoo! Groups Links
Re: [Repeater-Builder] Re: Active Low COR / COS (and rubber chickens) -- want to buy one?
Brilliant as usual Skip.if the device you are using is active low toggle it to active high...the alluded problempower fails - goes low and keys up...love listening to carriers!! You actually can learn a lot from carriers...especially pigeons! Doug On 03/06/2010 16:53:46, skipp025 (skipp...@yahoo.com) wrote: Re: Active Low COR What is the advantage of an active low COR. Goes well with red wine... Most I have talked to say they have their controllers set that way, so I set mine that way,plus the Maxtrac I am using as a receiver default is active low. Normally... If the source device fails, the trailing device does not receive an active low (turn-on or key on the air) logic signal. I simulated a power failure to the receiver and the line went low and the transmitter thought it was time to transmit. Normally one would hopefully expect the active low output of a device (receiver) not to have adjacent paralleled parts (resistors) pulling the output control (cor) line down when the unit loses power. The pull-up resistor located at the input of the trailing device ensures the receiver status on/off doesn't matter to the controlling logic line. So it's probably the location of a pull up resistor and now you've described a valid reason for preferring an active high cor in your specific situation. I also accidentally pulled the cord from the controller off the back of the receiver and aga
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/2010 20:47:07, dgrapach (dgrap...@gmail.com) wrote: I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF WEATHER ON IT. To many red flags. After a reveiew of the messages and I would like to use it, I think I am going to pass this one up. After all safety is number one. Thanks to all for the good advice on this subject, this is the BEST forum to gain knowledge on repeater information, their is no other like it. Thanks to all Denny --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: I just noticed a RED FLAG item in one of the pictures. Whomever constructed the tower installed the cross braces upside down - the drain holes are at the top. 40 years of rain getting into those will not be good. Chuck WB2EDV - Original Message - From: NORM KNAPP nkn...@... To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 03, 2010 3:11 PM Subject: Re: [Repeater-Builder] Re: Advice on 40 year old radio tower Not worth your time, let alone your life. Bolt
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
ACME DYNIMITE FOR SALE!! or is that DYNAMITE lol D On 03/06/2010 20:50:39, Chuck Kelsey (wb2...@roadrunner.com) wrote: Now someone needs to do the next guy a favor and drop the thing to the ground before someone gets hurt. Chuck WB2EDV - Original Message - From: dgrapach dgrap...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 03, 2010 4:47 PM Subject: [Repeater-Builder] Re: Advice on 40 year old radio tower I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF WEATHER ON IT. To many red flags. After a reveiew of the messages and I would like to use it, I think I am going to pass this one up. After all safety is number one. Thanks to all for the good advice on this subject, this is the BEST forum to gain knowledge on repeater information, their is no other like it. Thanks to all Denny Yahoo! Groups Links
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
I know, you know butwhy I sent msg Chow for now.. D On 03/06/2010 21:07:19, Chuck Kelsey (wb2...@roadrunner.com) wrote: You are both wrong. It is there. - Original Message - From: Doug Hutchison specialq@ntlworld.com To: repeater-builder@yahoogroups.com Sent: Thursday, June 03, 2010 5:02 PM Subject: Re: [Repeater-Builder] Re: Advice on 40 year old radio tower Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/2010 20:47:07, dgrapach (dgrap...@gmail.com) wrote: I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF Yahoo! Groups Links
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
Vert funnyyou should now...Google it in future there is the correct word in the way you were using it and ignorance is no excuse sorry...same as the idiots who use 73's --- it is 73 CW check it out and get it correct!! English is 03/06/2010 21:29:15, dgrapach (dgrap...@gmail.com) wrote: Yea I know I didn't do to good in English class, I didn't know which their to put their... and I still don't know.. --- In Repeater-Builder@yahoogroups.com, Doug Hutchison specialq@... wrote: Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/2010 20:47:07, dgrapach (dgrap...@...) wrote: I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF WEATHER ON IT. To many red flags. After a reveiew of the messages and I would like to use it, I think I am going to pass this one up. After all safety is number one. Thanks to all for the good advice on this subject, this is the BEST forum to gain knowledge on repeater information, their is no other like it. Thanks to all Denny --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2edv@ wrote: %2
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
Vert funnyyou should now...Google it in future there is the correct word in the way you were using it and ignorance is no excuse sorry...same as the idiots who use 73's --- it is 73 CW check it out and get it correct!! English is 03/06/2010 21:29:15, dgrapach (dgrap...@gmail.com) wrote: Yea I know I didn't do to good in English class, I didn't know which their to put their... and I still don't know.. --- In Repeater-Builder@yahoogroups.com, Doug Hutchison specialq@... wrote: Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/2010 20:47:07, dgrapach (dgrap...@...) wrote: I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF WEATHER ON IT. To many red flags. After a reveiew of the messages and I would like to use it, I think I am going to pass this one up. After all safety is number one. Thanks to all for the good advice on this subject, this is the BEST forum to gain knowledge on repeater information, their is no other like it. Thanks to all Denny --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2edv@ wrote: %2
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
End of as far as I am concerned On 03/06/2010 21:45:20, Doug Hutchison (specialq@ntlworld.com) wrote: Vert funnyyou should now...Google it in future there is the correct word in the way you were using it and ignorance is no excuse sorry...same as the idiots who use 73's --- it is 73 CW check it out and get it correct!! English is 03/06/2010 21:29:15, dgrapach (dgrap...@gmail.com) wrote: Yea I know I didn't do to good in English class, I didn't know which their to put their... and I still don't know.. --- In Repeater-Builder@yahoogroups.com, Doug Hutchison specialq@... wrote: Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/2010 20:47:07, dgrapach (dgrap...@...) wrote: I checked the drain hole on that brace and their is another one at the other end on the bottom, anyhow, you ARE RIGHT IT HAS 40 YEARS OF WEATHER ON IT. To many red flags. After a reveiew of the messages and I would like to use it, I think I am going to pass this one up. %0
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
Ding ding!! On 03/06/2010 21:47:15, nj902 (wb0...@arrl.net) wrote: --- In Repeater-Builder@yahoogroups.com, Doug Hutchison specialq@... wrote: Their??? English there they're ...get the right one! -- Just remember: The Smiths are going to Chicago on vacation. They're going to drive there in their car. Yahoo! Groups Links
Re: [Repeater-Builder] asking a help about GP-340 charger
Mmmm.but consider the implications.and if not do not complain..cheap in the end may mean very expensive. for us all.read between the lines!! On 03/06/2010 22:00:45, kevin valentino (kevinvalent...@sbcglobal.net) wrote: I don't mean to be rude by any means. Is it a known good battery? For all the time, effort, and $ you spent why dont you just get one of those china knockoff chargers cheap on an ebay store? --- On Thu, 6/3/10, mimomeg mimo...@yahoo.fr wrote: From: mimomeg mimo...@yahoo.fr Subject: [Repeater-Builder] asking a help about GP-340 charger To: Repeater-Builder@yahoogroups.com Date: Thursday, June 3, 2010, 10:03 AM i have a gp340 rapid charger,the number of charger is HTN9000B, is started charge with a steady red ,but Every few Minutes is flashed red (about 3 second), Then retourn to a steady red, never reached the flashed or steady green. i change these ICs: tl494, lm324 and 14051b, but no thing change,i suspect in this IC : --- --- SC500352DW 39F01 VER1.20 - - 2J53W -- - M - CTAA0015 I can not find anything on this IC. Does anyone have any idea? Thanks in advance for any help. [Image] Your email settings: Individual Email|Traditional Change settings via the Web [link: groups.yahoo.com/group/Repeater-Builder/join;_ylc=X3oDMTJlcGhpazEyBF9TAzk3N
Re: [Repeater-Builder] Re: Advice on 40 year old radio tower
You mean ANEnglish class! On 03/06/2010 22:21:52, Robert Boles (bobe...@yahoo.com) wrote: so when did this group become a English Class ? --- On Thu, 6/3/10, Doug Hutchison specialq@ntlworld.com wrote: From: Doug Hutchison specialq@ntlworld.com Subject: Re: [Repeater-Builder] Re: Advice on 40 year old radio tower To: repeater-builder@yahoogroups.com Date: Thursday, June 3, 2010, 2:45 PM Vert funnyyou should now...Google it in future there is the correct word in the way you were using it and ignorance is no excuse sorry...same as the idiots who use 73's --- it is 73 CW check it out and get it correct!! English is 03/06/2010 21:29:15, dgrapach (dgrap...@gmail.com [link: us.mc802.mail.yahoo.com/mc/compose?to=dgrap...@gmail.com]) wrote: Yea I know I didn't do to good in English class, I didn't know which their to put their... and I still don't know.. --- In Repeater-Builder@yahoogroups.com [link: us.mc802.mail.yahoo. com/mc/compose?to=repeater-buil...@yahoogroups.com], Doug Hutchison specialq@... wrote: Their??? English therethey're ...get the right one! What happened to English I wonder??? 8On 03/06/201
[Repeater-Builder] Transformer cores
Hello, Got situation where the 'elastic' or whatever inside RX IF transformer has disintegrated through age allowing ferrite core to drop to bottom thus negating adjustment. What successful fixes have been found for such a problem which will continue to allow adjustment yet not jam the core? Doug - GM7SVK
Re: [Repeater-Builder] Transformer cores
Hello again and thank you all for the input. I shall try the thread/wax combination but remembered I had a plumbers wrench kit which has a roll of PTFE, wrapped some on one of the three cores which have dropped out and it works a treat. Good idea Joel. Best regards, Doug - GM7SVK On 29/05/2010 17:40:57, Joel Liburd (v44...@caribsurf.com) wrote: Hi Doug, I have had this on many occasion, my first experience was, what the heck I'm going to do now! I have tried thread, wax, rubber band and others, best that works 100% of the times are the (right size fishing line) and my favorite plumbers tape (wrap it on the threaded core) I keep a roll in my tool bag. I hope this helped. v44kai.Joel. - Original Message - From: Doug Hutchison specialq@ntlworld.com To: repeater-builder@yahoogroups.com Sent: Saturday, May 29, 2010 12:37 PM Subject: [Repeater-Builder] Transformer cores Hello, Got situation where the 'elastic' or whatever inside RX IF transformer has disintegrated through age allowing ferrite core to drop to bottom thus negating adjustment. What successful fixes have been found for such a problem which will continue to allow adjustment yet not jam the core? Doug - GM7SVK Yahoo! Groups Links Yahoo! Groups Links %3
Re: [Repeater-Builder] Transformer cores
Yep, thought that might be a problem when it sets.PTFE is a good solution...been winding the cores in and out for over 15 minutes and no problems. Thank you, Doug On 29/05/2010 18:50:09, Bill Smith (brsc...@yahoo.com) wrote: You need to be careful with Beeswax. it can hold the core tight enough that you break it. - From: Chuck Kelsey wb2...@roadrunner.com To: Repeater-Builder@yahoogroups.com Sent: Sat, May 29, 2010 11:46:19 AM Subject: Re: [Repeater-Builder] Transformer cores I've always heard about inserting a small diameter piece of rubber band in between, but have never found anyone that actually had it work. If it were me, I'd get some bees wax, melt it, and quickly dip the core in it using a tuning tool so as not to coat the innards. This would put a small coating of bees wax on it, increasing the diameter and making it a bit sticky. That said, I've never done any procedure. Chuck WB2EDV - Original Message - From: Doug Hutchison specialq@ntlworld.com [link: mailto:specialq@ntlworld.com] To: repeater-builder@yahoogroups.com [link: mailto:repeater-buil...@yahoogroups.com] Sent: Saturday, May 29, 2010 12:37 PM Subject: [Repeater-Builder] Transformer cores Hello, Got situation where the 'elastic' or whatever inside RX IF transformer has disinteg
Re: [Repeater-Builder] White Noise on Micor TX
Hi Tim, Might the RX be hearing the TX? Doug - GM7SVK On 23/05/2010 04:10:37, Tim - WD6AWP (tisaw...@gmail.com) wrote: I have a small amount white noise on the TX of a Micor repeater. It is most noticeable in the hang time but it's not coming from the controller. It's still there with the controller completely removed and pressing PTT on the station control card. It's more noticeable on some radios, perhaps radios with higher audio frequency response. Anyone ever run into this before? Tim WD6AWP Yahoo! Groups Links
Re: [Repeater-Builder] Re: A warning to Land Mobile Radio Dealers
It is called responsibility and conscience and above all RESPECT Well intentioned input dumb response! D On 29/04/2010 16:58:11, kd6aaj (kd6...@yahoo.com) wrote: Strange, considering the GMRS can come with radios you buy, before you even have the license. I guess you have to be one of the BIG boys to sell radios preprogrammed with those freqs. and there is an EXCEPTION: Title 47: Telecommunication PART 90—PRIVATE LAND MOBILE RADIO SERVICES Subpart N—Operating Requirements § 90.427 Precautions against unauthorized operation. (a) Each transmitter shall be so installed and protected that it is not accessible to or capable of operation by persons other than those duly authorized by and under the control of the licensee. Provisions of this part authorizing certain unlicensed persons to operate stations, or authorizing unattended operation of stations in certain circumstances, shall not be construed to change or diminish in any respect the responsibility of station licensees to maintain control over the stations licensed to them (including all transmitter units thereof), or for the proper functioning and operation of those stations and transmitter units in accordance with the terms of the licenses of those stations. (b) Except for frequencies used in accordance with §90.417, no person shall program into a transmitter frequencies for which the licensee using the transmitter is not authorized.%0 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: Problems reaching the RB website sigh
Well for what it is worth...no upgrades etc but get the warningsomething is amiss... D On 08/04/2010 18:20:22, ka9qjg (ka9...@wowway.com) wrote: I do not know if it related But a few days ago I upgraded to Goggle Chrome and I have had nothing but problems including this ever since, I did the Add and remove for that then My shortcuts would not work . I know nothing is wrong with this site so I just click OK Don KA9QJG From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Skip Sent: Thursday, April 08, 2010 12:07 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Problems reaching the RB website sigh --- In Repeater-Builder@yahoogroups.com [link: mailto:Repeater- buil...@yahoogroups.com], Kevin Custer kug...@... wrote: La Rue Communications wrote: Right on Kevin - Thanks for staying on top of this. I checked all my browsers, I have about 10 on both my Mac and PCs and got no errors. Warning page redirects are only happening to people that have or use (subscribe to) Google add-ons and similar software. The RB site I use FireFox version 3.5.9 and I have not installed *ANY* add-ons. it is unable to get to repeater-builders.com. I do use Google gm
Re: [Repeater-Builder] Controller order , paypal problems
From whom did you order the controller?? On 16/03/2010 20:45:17, John J. Riddell (ve3...@earthlink.net) wrote: Some of you will recall that I had problems with Paypal when ordering a repeater controller. I sent two E mails to paypal and got no satisfactory reply...just stock answers I then called them to find out why they sent an E Check for my purchase instead of an instant money transfer. Again the lady read from a script and after asking her several times why they handled it this way, she finally told me that they have instituted a new security measure. When a purchase looks suspicious to their Computer, it decides to send an E Check which can take 10 - 15 days to clear. Is there any way to prevent thisno. since no human gets to see this transaction. This might happen in 1 - 2 % of the transactions that they handle. In my case the amount was $185.00 and it came out of my bank account instantly but their computer decided that it might be suspicious ! So hopefully this information is helpful to anyone using Paypal to make payments. I've used them many times in the past and never had a problem until now. John VE3AMZ %0
RE: [Repeater-Builder] Hamtronics R302 RSSI meter circuit.
An opamp based analogue meter driver using input from TP4 on the R302. Doug On 21/02/2010 16:52:13, Leroy A. M. Baptiste (leroybapti...@spiceisle.com) wrote: What kind of circuit? From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of gm7svk Sent: Sunday, February 21, 2010 12:27 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hamtronics R302 RSSI meter circuit. Does anyone have a suitable circuit which can be used with the R302? Regards, Doug [Image] Your email settings: Individual Email|Traditional Change settings via the Web [link: groups.yahoo.com/group/Repeater- Builder/join;_ylc=X3oDMTJldGw3dmF0BF9TAzk3NDc2NTkwBGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDc3RuZ3MEc3RpbWUDMTI2Njc3MTE0OA- -] (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest [link: mailto:repeater-builder-dig...@yahoogroups.com?subject=email Delivery: Digest] | Switch to Fully Featured [link: mailto:Repeater-Builder- fullfeatu...@yahoogroups.com?subject=change Delivery Format: Fully Featured] Visit Your Group [link: groups.yahoo.com/group/Repeater- Builder;_ylc=X3oDMTJjNGZzbTFtBF9TAzk3NDc2NTkwBGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDaHBmBHN0aW1lAzEyNjY3NzExNDg- ]| Yahoo! Groups Terms of Use [link: docs.yahoo.com/info/terms/%
Re: [Repeater-Builder] Wanted: Parts list for Hamtronics R76 10 Meter Receiver
Does JV at Hamtronics not have that info? Doug On 07/01/2010 16:33:41, skipp025 (skipp...@yahoo.com) wrote: Wanted: Parts list for Hamtronics R76 10 Meter Receiver I know this is a shot in the dark, but I'm going to ask anyway. Does anyone here have a copy of the Hamtronics R76 VHF FM Receiver (low band) parts list (I have the instructions) for the 10 Meter Band Version. Again I only need the parts list. Please Email me direct if you can help. Thank you! Regards, skipp skipp025 at yahoo.com Yahoo! Groups Links
RE: [Repeater-Builder] Re: Can we tuning duplexer with this equipment?
Low power HT, VSWR meter and dummy load will get there but not as perfect as the proper RF kit. It can be done as Skip suggests. Cheers and seasons greetings to all... Doug On 23/12/2009 18:20:18, Jim Cicirello (ka2...@gmail.com) wrote: Hey Skip, for those of us who have a service monitor without a Spectrum Analyzer built in, is there an alternative to using a radio with an S- meter on the duplexer end to see the peak and notch? I was wondering if an RF Meter would be sensitive enough to pick up the peak of the regular output of a service monitor? Would this be better in that we are taking another receiver out of the mix or would we be better to figure how to put an analog S Meter on a scanner or some type of stable receiver? Also with an variable output from say a service monitor, what do you use the attenuator pads for and where. Thanks for sharing your knowledge and experience. I only need to turn a few times a year and have an IFR1200A so I have a stable output, I just need to see the peak and notch. 73 JIM KA2AJH From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of skipp025 Sent: Wednesday, December 23, 2009 12:36 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Can we tuning duplexer with this equipment? If you have a decent radio with some type of receive signal strength indicator, some coax cables a separate transmitter
Re: [Repeater-Builder] Re: Can we tune duplexer with this equipment?
Hi Skip, Ever think of writing a book.so much to offer and helped me and many others, many times. Thank you and Seasons Greetings to you and yours Sir...you are what Amateur Radio is about...(and the group). Doug - GM7SVK On 23/12/2009 7:06 PM, skipp025 wrote: Hello again, Doug reminded me of two other items... one is the must have of one or two decent terminations (decent quality 50 ohm dummy loads), decent quality coax jumpers and some coax adapters (if required). Use of coax adapters is sometimes hard to avoid... but using modest attenuator pads help reduce some adapter issues. If you fish around Ebay, you can find really nice 3dB Pads fairly cheap. Here's an example of what you might want to use: Ebay Item Number: 200414154267 While the price of the above auction is in reality more than fair (compared to the price of the item new)... you can find the same or similar types of pads for less money. You'd be trading time for money if you want to pay less for this type of attenuator. I've seen and bought many of them for less than $10 at flea markets. Just be advised used ones can be el'smoke'd (burned up by excessive power input). Same thing with Terminations (Dummy Loads) like the one in the following Ebay Auction: Ebay Item Number: 170367584254 Great for bench work, cheap to buy if you're patient and very usable for most of the typical Amateur Bands. Coax is another item that's fairly cheap to improve upon. RG-214 mil-spec is usable but large and cumbersome in size. A lot of us like and use the Root-Beer color Teflon Coax types like RG-400. Here's another Ebay Example: Ebay Item Number 380188408647 If you're not getting to crazy... even RG-223 coax works at VHF frequencies without a lot of grief. another example with a picture Ebay Item Number 330309673164 And again, the price indicated in this auction is kind of high to those of use who frequent Electronics/Ham Flea Markets. I cite the above auction as an example with a decent picture to look at. Other coax types can be used... but don't be cheap in this area if you have the choice. In a pinch a few months back I made up a very short RG-58 jumper to use on a back-to-back UHF Maxtrac Repeater... only to find almost half the TX Power was lost in the coax. T'was a Homer Simpson moment I'll try not to repeat. cheers, s. Doug Hutchisonspecialq@... wrote: Low power HT, VSWR meter and dummy load will get there but not as perfect as the proper RF kit. It can be done as Skip suggests. Cheers and seasons greetings to all... Doug On 23/12/2009 18:20:18, Jim Cicirello (ka2...@...) wrote: Hey Skip, for those of us who have a service monitor without a Spectrum Analyzer built in, is there an alternative to using a radio with an S- meter on the duplexer end to see the peak and notch? I was wondering if an RF Meter would be sensitive enough to pick up the peak of the regular output of a service monitor? Would this be better in that we are taking another receiver out of the mix or would we be better to figure how to put an analog S Meter on a scanner or some type of stable receiver? Also with an variable output from say a service monitor, what do you use the attenuator pads for and where. Thanks for sharing your knowledge and experience. I only need to turn a few times a year and have an IFR1200A so I have a stable output, I just need to see the peak and notch. 73 JIM KA2AJH From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of skipp025 Sent: Wednesday, December 23, 2009 12:36 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Can we tuning duplexer with this equipment? If you have a decent radio with some type of receive signal strength indicator, some coax cables a separate transmitter Yahoo! Groups Links
Re: [Repeater-Builder] R2001D (A13) card
http://www.eham.net/forums/ModsAndRepairs/3326 http://www.tucker.com/java/jsp/product_partnoR2001D/HS_invid38200_condR.htm Might find someone who can help / shed some light, hope the links work OK. Just Googled R2001D, there is more out there. Good luck and Seasons greetings. Doug - GM7SVK http://www.radiobanter.com/showthread.php?p=662490 On 22/12/2009 16:10:46, Joel (v44...@caribsurf.com) wrote: Good day to all, This is posted on 3 groups, this indicates my crest for answers (I apologized if this offends anyoen on any of the groups) I just can find a group that deals with this beast(R2001D) A bit off topic, but I'm sure someone here (as some here have the Motorola R2001D service monitor) can answer my questions I've asked on other groups, without answer. I received a R2001D that doesn't work, only the oven ready let lit up, and I have the a ten (10 MHz) signal out on the BNC terminal on the back. On opening it up I realize theer's an empty slot (A13) now my questions. 1..Does this model requires the A13 card? From what I understod the A13 card is the 10 MHz oscillator card in earlier models, please answer. 2..Since I have the 10 MHz signal does this tells that the A13 card for this model is an option, or the A13 card slot here is a different card function? Please answer 3..Is there a R2001D group for this unit? Please answer. 4..Is the a free service manual available for download (I don't want to buy a manual if I need to have the A13 card installed) as I don't have it, and don't know where to find one now, even to borrow. I don't know %
[Repeater-Builder] Trying to test my antenna system (suspect desense..)
Suffering from poor receive perfomance and am trying to chech integrity of system. Single 3Db antenna, single output 6 cavity filter, 10w out of filter. Could someone enlighten me, the cavities are factory tuned 145.6875 tx 145.0875 rx and am attempting to check VSWR with an MFJ antenna analyser. The answers I see do not conform to my understanding so, at what frequencies, at the input and output of the filter while connected to antenna, should I see low vswr. I'm seeing 1.2:1 or so at 146.08, should I not see that on 145.08? Just a bit confused! Thank you, Doug - MM0BJA
[Repeater-Builder] Re: Sinclair Dual Circulator Help
Hi Willie, You should be able to get that info from Sonclair Technologies, Cambrigde. 01223 42 03 03. They have a short term internet access problem this morning but suggest try later in day once Canada wakes up and fixes the issue. Best regards, Doug - MM0BJA This might double up... --- In Repeater-Builder@yahoogroups.com, Wullie wullie...@... wrote: Hi All I recently purchased a Sinclir I2210A Dual Isolator for our local 2m repeater. I was wondering if there is anyone out there who has information on how to align this device ? Kindest regards Wullie GM0MZB Keeper GB3FE and GB3OH
[Repeater-Builder] Re: PL (CTCSS) Filter
Hi Bob, Cut a long story short .. looks like I did not actually finish the circuit which with my memory is no surprise. While working on the second build have found that the 1500 caps between pins 1 and 5 are missing as are the connections to pins 4 and 11. I think the reason was that I did not know what the values were exactly. Sorry about this but could you tell me what the value is. Regards, Doug - GM7SVK --- In Repeater-Builder@yahoogroups.com, n...@... wrote: At 3/19/2009 08:18, you wrote: Hi Doug, Many years ago I had a similar situation. Instead of using the N06B filter I used the built in hi-pass filter in a Comm Spec PL encoder/decoder board. It is very similar to the NO6B filter. Actually the reason I developed my own HPF was because of the poor performance of the filter in the CommSpec board. It's transient response is poor, causing a ringing boxy sound around 400 Hz. My design is an adaptation of the HPF used in the Sigtone C1116 CTCSS board. All I did was move the 3 dB point down from 300 Hz to ~210 Hz, since I don't use any of the higher CTCSS tones didn't want to filter the audio any more than necessary, since some of the outgoing paths end up being HPF'd again downstream by 300 Hz cutoff HPFs. Even at 151.4 Hz the attenuation is about 20 dB - good enough for me. What was happening was that the filter was introducing twist (subtle distortion) to the DTMF waveform. IIRC both the CommSpec Sigtone designs are flat once you're well within the voice band (600 Hz higher). But if 2 or more CommSpec filters are cascaded in a system the high pass rolloff may be high enough to attenuate some of the low DTMF tones. But that's not your problem if you're using my design. I suggest looking at the output of the filter with a scope to see if there's any ultrasonic oscillation that could be confusing the DTMF decoder downstream. You do have that 27k or some value of resistor = 1k on the output op amp (pin 8), right? An output isolation resistance is required to prevent external capacitive loading from causing that op amp to oscillate. Bob NO6B
[Repeater-Builder] Re: PL (CTCSS) Filter
Thank you Bob, Sorry to display my ignorance but 1500 what, nf, pf? Doug --- In Repeater-Builder@yahoogroups.com, n...@... wrote: At 3/21/2009 06:20, you wrote: Hi Bob, Cut a long story short .. looks like I did not actually finish the circuit which with my memory is no surprise. While working on the second build have found that the 1500 caps between pins 1 and 5 are missing as are the connections to pins 4 and 11. I think the reason was that I did not know what the values were exactly. Sorry about this but could you tell me what the value is. Regards, Doug - GM7SVK The cap values are properly called out on the schematic. Pins 4 11 are the supply connections for the op amp. Pin 4 is +12V pin 11 is ground. BTW, although the TL084 should work fine, there are better op amp choices available these days. I personally like the TLV2374 for its rail-to-rail in/out capability, low crossover distortion low cost. Then again if all you have in your parts bin is an LM324 it should work fine for testing purposes. Bob NO6B
[Repeater-Builder] Re: PL (CTCSS) Filter
Thank you both. Yes Bob have the 27k but seem to have made a mistake in the build somewhere in that the scope shows CTCSS still present on the output. Looks like there is some attenuation taking place, reducing all audio passing through by about a third. Cannot as yet see my error - will try a new build and advise. Best regards, Doug - GM7SVK --- In Repeater-Builder@yahoogroups.com, n...@... wrote: At 3/19/2009 08:18, you wrote: Hi Doug, Many years ago I had a similar situation. Instead of using the N06B filter I used the built in hi-pass filter in a Comm Spec PL encoder/decoder board. It is very similar to the NO6B filter. Actually the reason I developed my own HPF was because of the poor performance of the filter in the CommSpec board. It's transient response is poor, causing a ringing boxy sound around 400 Hz. My design is an adaptation of the HPF used in the Sigtone C1116 CTCSS board. All I did was move the 3 dB point down from 300 Hz to ~210 Hz, since I don't use any of the higher CTCSS tones didn't want to filter the audio any more than necessary, since some of the outgoing paths end up being HPF'd again downstream by 300 Hz cutoff HPFs. Even at 151.4 Hz the attenuation is about 20 dB - good enough for me. What was happening was that the filter was introducing twist (subtle distortion) to the DTMF waveform. IIRC both the CommSpec Sigtone designs are flat once you're well within the voice band (600 Hz higher). But if 2 or more CommSpec filters are cascaded in a system the high pass rolloff may be high enough to attenuate some of the low DTMF tones. But that's not your problem if you're using my design. I suggest looking at the output of the filter with a scope to see if there's any ultrasonic oscillation that could be confusing the DTMF decoder downstream. You do have that 27k or some value of resistor = 1k on the output op amp (pin 8), right? An output isolation resistance is required to prevent external capacitive loading from causing that op amp to oscillate. Bob NO6B
[Repeater-Builder] PL (CTCSS) Filter
Hi, Have built the filter circuit by Bob Dengler NO6B from the site. The unit works a treat but for some reason, DTMF detection fails on my 210 controller with the filter in use. DTMF is present on the output. Any suggestions re what might be causing this would be appreciated. Thank you, Doug - GM7SVK
[Repeater-Builder] Re: Arcom RC210 PTT LED on all the time
Hi, This is a 'normal' feature of the 210. It has no influence on any operation. Seems to affect port 1 only. 73 de Doug - GM7SVK --- In Repeater-Builder@yahoogroups.com, DCFluX dcf...@... wrote: Try a diode between the PTT line and the repeater. On Thu, Jan 22, 2009 at 8:06 PM, Glenn Maclean wa7...@... wrote: I am putting a 220 repeater together using an ICOM IC-RPP2210. The repeater is working except the PTT LED remains illuminated all the time. It goes ever so slightly brighter when the repeater is keyed up. I measure 1.56 volts dc at the PTT line between the controller and repeater un-keyed. I measure .67 volts dc when the repeater is keyed up. I have tried applying 12 volts to a 10k ohm resistor with the other end connected to the PTT line with no change. The PTT LED remains on. I even tried a 1K resistor in the same configuration. The PTT LED remains on. The repeater is transmitting and receiving just fine with the RC210 controller. Any suggestions? Thanks, Glenn Yahoo! Groups Links
[Repeater-Builder] Cooling fan
Hi, Have tried a few ex equipment and CPU cooler fans on a p/a heatsink but all generate a noise (light buzz) on the transmitted signal. Can anyone suggest the correct choice of fan (or what I am missing) to stop the buzz on the transmitted signal? RF choke? Tried cap up to 4700uf little change? Thank you, Doug - GM7SVK
[Repeater-Builder] Re: Cooling fan
Thank you to all responding - as usual very helpful - much appreciated. Burt, Lance, Ron, best regards de Doug - GM7SVK --- In Repeater-Builder@yahoogroups.com, Burt Lang [EMAIL PROTECTED] wrote: I have found that adding a resistor in series with the fan and a capacitor across the fan will do the same job as an inductor and capacitor without taking up as much space. The value of resistor I use is just enough to drop the voltage by about 1/2 volt. For a fan drawing 0.5A, use a 1 ohm 1W resistor. For other current draws adjust accordingly. It is not critical. The fan speed will not change much - 12vdc fans will run as low as 6-7v normally. Burt VE2BMQ Captainlance wrote: *We have found that 12v. fans do cause interference with our link transmitters for the NYC voting network. The solution we found is taking one of the 2 power supply chokes from an old Micor mobile radio and using it in series with the 12v. lead to the fan, add a cap. 2000 mfd or larger from fan to ground and the level of AC imposed on the power lead drops from nearly 4 VOLTS to less than 10 millivolts...Resulting in a totally clean carrier. * *lance N2HBA* - Original Message - *From:* Doug Hutchison mailto:[EMAIL PROTECTED] *To:* Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com *Sent:* Saturday, April 26, 2008 4:48 AM *Subject:* [Repeater-Builder] Cooling fan Hi, Have tried a few ex equipment and CPU cooler fans on a p/a heatsink but all generate a noise (light buzz) on the transmitted signal. Can anyone suggest the correct choice of fan (or what I am missing) to stop the buzz on the transmitted signal? RF choke? Tried cap up to 4700uf little change? Thank you, Doug - GM7SVK
[Repeater-Builder] Re: Transistor Switch
Hi Bob, Yahoo sys always strips out lead spacing on such diagrams. Trick is to start each line with a character - see below. Best regards, Doug - GM7SVK OK, ASCII graphics time: to fans O | / |/ controller 1K | logic O---/\/\/| NPN transistor (i.e. 2NA) output | \ | | - --- -
[Repeater-Builder] Re: DCS decoder software?
Hi George, You may be interested in having a look here:- http://www.scanaustralia.bigpondhosting.com/software/software1.html Doug --- In Repeater-Builder@yahoogroups.com, ka3hsw [EMAIL PROTECTED] wrote: Does anyone know of a software program that will take discriminator audio and display the DCS (or, optionally, CTCSS) being used? If not, can someone point me to the technical specification for DCS? (I know it's approximately 131 baud, sub-audible, occupying 2-300 Hz, but that's all I could find...) Maybe I can get my son to write such a program George
[Repeater-Builder] Seeking feed thru' cap value.
What value of cap should be used as a minimum for TX RX controller inter-connection. 1000pf, 5000pf? Doug - GM7SVK
[Repeater-Builder] Problem with fan noise in power line.
Have a system comprising 4m simplex link and 2m repeater running from same PSU. Tried using a brushless fan to boost cooling but when running and connected on the same PSU as the RF kit, the noise generated on 4m TX audio (not 2m), a very loud buzz, is incredible. Obviously the inverter noise is being carried back into the PSU so some sort of filtering is needed as, when the fan is run on a separate supply, there is no problem. Has anyone encountered such a situation and if so what circuit or device was used to cure the noise (other that a second PSU)? Regards, Doug - GM7SVK
[Repeater-Builder] Tone filter
Hi, Could anyone point me in the direction of a simple circuit which will facilitate the muting or suppression of a 1750 hz tone on the received audio. Thank you for readingregards, Doug - GM7SVK
