[Repeater-Builder] showing our age (old HT's)
Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale.
Re: [Repeater-Builder] Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
At 07:55 PM 07/26/10, you wrote: Hello group, I have been playing with repeaters for quite some time and now I finally own a real piece of test equipment. An HP 8924c, before almost dumping more money into one more, one function, piece of equipment, a spectrum analyzer, I found these 8924c's on eBay... Shopped for about 6 months and found a 100W version for less then a K so I'm very pleased. The manual for this unit is not designed to walk you through any of the analog test procedures or setup. I've figured some of the simple stuff out. Duplex tests, spectrum analyzer/tracking gen ect. and I love this thing so far. Right now before I start dabbling with my first full on GE Mastr RX alignments I'd like to make some sensitivity tests (the right way). There's a lot of bells and whistles on this HP and I think there's some built in sinad measurement tools. I also would like to know how to make the old standard 20db reff test as well as the 12db sinad. Is there any information I missed about using this 8924c's for it's analog functions, setup and test procedures??? Also I plan on building a sampler slug for my bird43 other then that what else is really needed in the tool box for this unit. I plan on using it for TX/RX alignments, band-pass, notch filter adjustments, duplexer isolation, antenna and feed line analysis. Sorry for this very noob of a question but elmers around here with any knowledge of this unit just don't exist. And my friend with an ifr1200 tried to get me started on the sinad testing but I think there is an easier procedure for this HP 8924.c. Thanks for your time RB's Regards Ross kc7rjk http://www.kc7rjk.netwww.kc7rjk.net There's a slew of docs on the 892x series on repeater-builder. Go to www.repeater-builder.com, scroll down to test Equipment, then HP / Agilent then scroll down to the 892x stuff. In fact the last item on the page is HP 8924C CDMA Mobile Station Test Set Reference Guide (Firmware Version A.07.04 and above) And if you want to write A newbies introduction to the 8924 feel free to... we'll put it on the web site...
[Repeater-Builder] Re: Motorola R-2200A User Manual
Thanks for the reply Eric, I have the Maintenance Manual. Did they make a How To type of manual? I know a little bit, but really not sure how to navigate around it. Anyone? Robert KD4YDC --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Robert, I have good news and bad news. The bad news is that the R2200-series Operator's Manual 6881069A79 is out of print and is NLA. The good news is that the R2200A Maintenance Manual 6991069A76 is still available from Motorola Parts, for about $58. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Robert Sent: Sunday, July 25, 2010 5:25 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola R-2200A User Manual Does anyone have a link to this? Would love it if this was in pdf as well ;-) 73, Robert KD4YDC
[Repeater-Builder] Re: Recommendations for a Voter Link
I don't know a thing about that voter. Maybe someone will chime in here. My voter will do tone signaling so I'm ok with the 7x24 keyed down link transmitter. In fact I think it's probably the way to go. It's just that it requires something with the duty cycle to handle it and I'm looking for recommendations of a radio to do the job. Maybe a Mitrek on 420 or maybe a microwave radio. Any comments? --- In Repeater-Builder@yahoogroups.com, Ross Johnson kc7...@... wrote: I'm in the exact same boat working on a remote receiver. I don't want the link keyed 24-7 either. I now there are some voters out there that don't require 1950hz and some that don't need it present 100% of the time to keep that voter port active. But are there any other voters in the used or DIY market that's in the HAM budget. That do not require the 1950hz tone at all. Here one I found on RB but I will need eventually 3 ports. http://www.repeater-builder.com/rbtip/wb2whc.html Can one more port be added and has anyone had good success with this unit? Thanks All, Ross kc7rjk -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim - WD6AWP Sent: Sunday, July 25, 2010 3:19 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Recommendations for a Voter Link I'm going to start working on building a link for a remote receiver. I already have a voter and I'll be using a VHF Micor receiver strip for the remote. A couple of mobiles that tune down to 420 might be good as I don't have a lot room. I'm thinking the link transmitter will be keyed 7x24 with tone signaling. However the duty cycle requirement is a problem for mobiles. A microwave system might be possible if I knew what and where to get. Wireline is probably out. I'd like to hear your ideas on how to put this together. Thanks, Tim P.S. Sorry if this post is a dup. The first one did seem to come through this morning.
[Repeater-Builder] Re: Duplxer, tuned cavity question.
Well, I guess I will just have to decide betweena a packet station or an APRS station. I don't have the kind of money they want for those things. I have seen picture of bandpass/reject filters. They son't look that hard to make. Tunning them would be another, but I do have a spectrum analyzer. Plus they Look HUGE. about 10 inches by 20 inches. Oh well, guess I will just choose one. Thanks, Kevin Kc7hgn --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: My really rough guess is that you will need around 85dB of isolation between the two stations. Using two antennas 25 feet apart is only going to give you about 30dB of isolation. A bandpass filter at .64Mhz off the center frequency will only give you around 10-20 dB more of isolation. I think you will need either a bandpass/bandreject filter, or possibly a notch filter on each station. My math is all best-guess, so please verify it before you go buying equipment. I use a TX/RX Vari Notch 10 cavity for a similar application, but they are expensive. I don't think you sare going to find a cheap fix. Someone with more math skills can possibly verify my guess. 73, Joe, K1ike On 7/22/2010 7:10 AM, Kc7hgn wrote: I am not going to be able to stack the antennas. They Would be about 25-40 feet apart horizantal. I guess what I need is 2 bandpass filters. I think thats what I am looking for. Now the big question. Can I build them? And where would I find the information? If I can't build them, where would be an inexspensive place to buy them? I don't know of any Elmers in my area that know about bandpass filters, or one that would take the time to help. Thats why I am here. Thanks, Kevin Kc7hgn
Re: [Repeater-Builder] Re: Motorola R-2200A User Manual
Robert, I have a user manual for my R-2200B, not sure of the similarities between the 2 models? Cheers, Jack VK4JRC Sent from my Apple iPad Tablet PC On Jul 26, 2010, at 12:32 PM, Robert kd4...@juno.com wrote: Thanks for the reply Eric, I have the Maintenance Manual. Did they make a How To type of manual? I know a little bit, but really not sure how to navigate around it. Anyone? Robert KD4YDC --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Robert, I have good news and bad news. The bad news is that the R2200-series Operator's Manual 6881069A79 is out of print and is NLA. The good news is that the R2200A Maintenance Manual 6991069A76 is still available from Motorola Parts, for about $58. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Robert Sent: Sunday, July 25, 2010 5:25 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola R-2200A User Manual Does anyone have a link to this? Would love it if this was in pdf as well ;-) 73, Robert KD4YDC
[Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
From those files the Agilent Technologies 8920A-B Application Handbook 08920-90126.pdf manual might be what you're looking for, but you'll need to find out if this works for the 8924C as well considering menu structure, buttons etc. From my E8285A I know that some things work different than on a 8920, this may be similar in your case. 73 Martin
[Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
There is also a Yahoo group for these units. Search for hp8924 (without the quotes, of course).
Re: [Repeater-Builder] Re: Repeater receiver testing
Kevin, I'm sorry to have to tell you this but I think your calculator batteries need to be changed. 0 dBM = 0.2236 volts in a 50 Ohm circuit. +20 dBM is indeed 100 mW and P=EI and inserting 100 mW into the Eq. for Volts in a 50 Ohm system, E= the sq. rt. of the quantity (.100 x 50) = sq. rt. of 5 = .707 V. or 707 mV. not the 2.24 V. you indicated. Even if the rcvr had an input Z of 50 Ohms (without any X component at the operating freq. which I doubt but let's accept that as so) , the rcvr input Z at a freq. removed by 6 MHz can hardly be assummed to be any thing close to 50 Ohms and is more likely to be highly + or -X therefor not absorbing or accepting any input signal and your analysis lacks merit. Allan Crites WA9ZZU From: Kevin Custer kug...@kuggie.com To: Repeater-Builder@yahoogroups.com Sent: Mon, July 26, 2010 3:47:08 PM Subject: Re: [Repeater-Builder] Re: Repeater receiver testing yes I know -55db is I think around 399 microvolts which will flatten any receiver, I sure hope not; there are many signals coming down my antenna that are that strong. In fact, my 440 repeater 13 miles away is at about that level at my antenna connector. Reminds me of a test I did with a GE MASTR Pro VHF receiver (stock - no preamp - ER-41C) and a GE MASTR II PLL exciter (stock - 200 mW output) and a tee connector. Receiver and exciter on each end of the tee (with short cables) and antenna/service monitor on the center. As I remember, the frequencies were about 6 MHz apart and the 'repeater' would duplex reasonably well considering no filtering was used between the units. Of course, I'm not saying there wasn't desense, but it worked - pretty well. Obviously, the 200 mW was split into two paths and who knows how much was hitting the input port of the receiver, but lets say half of it was - 100 mW. That power level is +20 dBm. I can almost guarantee you that transmitter side band noise is what created the desense - not the shear power of the transmitter. +20 dBm is 2,240,000 μV or 2.24 volts of RF. My receive antenna for the UHF remote receivers is top mounted across the tower face beside the VHF stick. The VHF repeater runs 250 watts. 4 watts of VHF power appears at the splitter (in the shelter - including feedline loss) which feeds the 4 UHF receivers. The splitter (old CATV type) gets warm - you figure out how much VHF power is getting to each UHF receiver grin. Kevin Custer
Re: [Repeater-Builder] showing our age (old HT's)
I have a metal He-Man lunch box with lead based paint. Does that count, or is it strictly two way stuff? ;-) John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Sunday, July 25, 2010 7:00 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale.
RE: [Repeater-Builder] Re: Repeater receiver testing
Kevin, I'm sorry to have to tell you this but I think your calculator batteries need to be changed. 0 dBM = 0.2236 volts in a 50 Ohm circuit. +20 dBM is indeed 100 mW and P=EI and inserting 100 mW into the Eq. for Volts in a 50 Ohm system, E= the sq. rt. of the quantity (.100 x 50) = sq. rt. of 5 = .707 V. or 707 mV. not the 2.24 V. you indicated. I think you blew that one OM. Too much tequila down in XE land perhaps? The square root of 5 is 2.2236 volts, not sure where you got 0.707, that would be square root of 0.5. Kevin was right. Or, to make it even simpler without having to do any real math, +20 dBm is 20 db greater than 0 dBm. 20 dB more than 0.2236 volts is, obviously, 2.236 volts. --- Jeff WN3A
Re: [Repeater-Builder] showing our age (old HT's)
And for your SoCal types.. I remember seeing Dick McKay walking around the Sahara in Vegas, talking into a Motorola mic (with just the coil cord hanging down) and listening on '94. This was during SAROC in the 70's 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!
[Repeater-Builder] Re: Recommendations for a Voter Link
Mike Morris wa6...@... wrote: The idle marker tone system was designed for wire-lines and adapted to microwave shots. Also known as Status Tone But there are ways around it. The simple method: Have a local 1950 oscillator at the voter site. It can be done with a 88mh toroid, a few resistors and caps, and a single transistor. Can't think of the last time I saw an 88mh Toroid for sale in any obvious location but I'm sure they're out there somewhere like Ebay. I found some of the newer one-chip GE Status Tone Encoders on Ebay a few months back and they were cheaper than I could have easily built them for. Have a SPDT reed relay driven by the link receiver RUS (or COR). Links can be on 420Mhz, 438-439Mhz, 900Mhz, or 1200 Mhz. ... and if you're creative some other places. The NC contact on the relay has 1950hz. NO contact has link receiver audio. Armature feeds voter card audio input. When channel is idle, card sees 1950hz and is happy. When channel is unsquelched card sees link receiver audio and votes. Wonder if the relay pole contact transition time contributes to any type of glitch, hunt, delay or erratic event that might otherwise not be there if you simply (resistance as an example) mixed and removed the Status Tone? Reed relays last a long time - I've had used ones last 12 years, and new ones last 20, but you can use CMOS audio switches if you want. CD4053 and use the diagram from an ACC RC-85 Repeater Controller as your basic guide. The GE voter performance has the Doug Hall beat hands down. The GE and Motorola Spectra Tac Voters are true Signal-To-Noise Voters, where as the LDG, earlier Doug Hall and the ARRL 2-Channel voters are not. I haven't seen a current Hall Voter Close up to determine if it's a real SN Voter but the earlier Hall versions I have like the LDG are not (true SN voters). True SN Voters don't seem to be nearly as subject to talk-off as do the lower cost voter options. But the lower cost options are quite usable. One novel trick with the LDG Voter is to use the inputs for all your repeater receivers when the controller doesn't have enough RX ports. Documentation on both vintages of the GE voter (grey paint is early, black paint is late) is on the GE LBI page at repeater- builder. Mike WA6ILQ The Spectra Tac Voter Manuals pop up on Ebay every so often as to the GE Version Manuals. If you fool the status tone decoder with a local oscillator, keep in mind the level of the Status Tone also plays into the actual performance. It's not just a tone present or tone not present function. s.
Re: [Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
Hi, I recently aquired an IFR 1200S and was wondering if similiar training info exists for this machine like the HP? Tom From: radioman762 fwb...@mminternet.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 9:10 AM Subject: [Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad There is also a Yahoo group for these units. Search for hp8924 (without the quotes, of course). Yahoo! Groups Links
Re: [Repeater-Builder] showing our age (old HT's)
Boy, I must be old...I actually remember those radios. de KM3W From: La Rue Communications laruec...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Tue, July 27, 2010 12:07:58 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) I have a metal He-Man lunch box with lead based paint. Does that count, or is it strictly two way stuff? ;-) John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl. com/2dtngmn - Original Message - From: skipp025 To: Repeater-Builder@ yahoogroups. com Sent: Sunday, July 25, 2010 7:00 PM Subject: [Repeater-Builder] showing ourage (old HT's) Allow me to show my age ... To me, the HT-220 is/was aXtal Controlled Ht !! Allow me to show my age... The HT here isa VHF Engineering 2 Meter Portable assembled from a kit... and it stillworks. :-) s. ps: Surplus Motorola and GE Lunch Boxesdon't count on the bragging scale.
Re: [Repeater-Builder] Re: Repeater receiver testing
I sure did. Thanks to you Jeff for your response and my sincerest apology to Kevin. I did the calculation four times and got the same wrong answer four times before I hit the send button. Only after I sent did I redo the calculation on another calculator and was I horrified to learn of my mistake. It's time for a new calculator for me. And then the computer crashed. Time for a new computer too. AC From: Jeff DePolo j...@broadsci.com To: Repeater-Builder@yahoogroups.com Sent: Tue, July 27, 2010 11:09:55 AM Subject: RE: [Repeater-Builder] Re: Repeater receiver testing Kevin, I'm sorry to have to tell you this but I think your calculator batteries need to be changed. 0 dBM = 0.2236 volts in a 50 Ohm circuit. +20 dBM is indeed 100 mW and P=EI and inserting 100 mW into the Eq. for Volts in a 50 Ohm system, E= the sq. rt. of the quantity (.100 x 50) = sq. rt. of 5 = .707 V. or 707 mV. not the 2.24 V. you indicated. I think you blew that one OM. Too much tequila down in XE land perhaps? The square root of 5 is 2.2236 volts, not sure where you got 0.707, that would be square root of 0.5. Kevin was right. Or, to make it even simpler without having to do any real math, +20 dBm is 20 db greater than 0 dBm. 20 dB more than 0.2236 volts is, obviously, 2.236 volts. --- Jeff WN3A
Re: [Repeater-Builder] Re: Repeater receiver testing
allan crites wrote: Kevin, I'm sorry to have to tell you this but I think your calculator batteries need to be changed. 0 dBM = 0.2236 volts in a 50 Ohm circuit. +20 dBM is indeed 100 mW and P=EI and inserting 100 mW into the Eq. for Volts in a 50 Ohm system, E= the sq. rt. of the quantity (.100 x 50) = sq. rt. of 5 = .707 V. or 707 mV. not the 2.24 V. you indicated. Not sure what planet you are from Allan, but since you admit that 0 dBm is .2236 Volts, and everyone knows that an increase in power by 10 dB is the same as multiplying that figure by 10, I'm correct - you are way off. Even if the rcvr had an input Z of 50 Ohms (without any X component at the operating freq. which I doubt but let's accept that as so) , the rcvr input Z at a freq. removed by 6 MHz can hardly be assummed to be any thing close to 50 Ohms and is more likely to be highly + or -X therefor not absorbing or accepting any input signal and your analysis lacks merit. My statement said power hitting the input port, I said nothing about power being accepted or absorbed into the receiver, therefore again - I'm correct - you are way off. Let me remind you that, on this particular email list, I (we) strive for accuracy. I don't just come up with some crap to make things interesting - I've been 'doing' duplex radio systems since I was 14 - I'm now 46, so you do the math, correctly this time. You state my analysis lacks merit. Unless you have tried the the experiment I refer to - and have found something different to report, why don't you try keeping your off base thoughts and inaccurate calculations/information to yourself. If this seems to come off as a hot headed warning - you have read this post correctly. (I'm the list owner (in case you haven't figured that out)). By the way, the GE PLL exciter has 22 dB less phase noise at 600 kHz from its primary carrier than does its multiplier counterpart, you can bet it's way more than that at 6 MHz. End of thread - everyone please more forward. Kevin Custer
[Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham
Well, I have heard that it can be done...question is how big a pain is it? We have access to a couple and before we nab them, wanted to feel out how much effort they would be or to wait for some other opportunity Also is it documented on the web anywhere?
Re: [Repeater-Builder] Re: Repeater receiver testing
Get a Mac. Much more efficient and crash free.. Keep your PC for programming if its old enough. :) John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: allan crites To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 10:05 AM Subject: Re: [Repeater-Builder] Re: Repeater receiver testing I sure did. Thanks to you Jeff for your response and my sincerest apology to Kevin. I did the calculation four times and got the same wrong answer four times before I hit the send button. Only after I sent did I redo the calculation on another calculator and was I horrified to learn of my mistake. It's time for a new calculator for me. And then the computer crashed. Time for a new computer too. AC -- From: Jeff DePolo j...@broadsci.com To: Repeater-Builder@yahoogroups.com Sent: Tue, July 27, 2010 11:09:55 AM Subject: RE: [Repeater-Builder] Re: Repeater receiver testing Kevin, I'm sorry to have to tell you this but I think your calculator batteries need to be changed. 0 dBM = 0.2236 volts in a 50 Ohm circuit. +20 dBM is indeed 100 mW and P=EI and inserting 100 mW into the Eq. for Volts in a 50 Ohm system, E= the sq. rt. of the quantity (.100 x 50) = sq. rt. of 5 = .707 V. or 707 mV. not the 2.24 V. you indicated. I think you blew that one OM. Too much tequila down in XE land perhaps? The square root of 5 is 2.2236 volts, not sure where you got 0.707, that would be square root of 0.5. Kevin was right. Or, to make it even simpler without having to do any real math, +20 dBm is 20 db greater than 0 dBm. 20 dB more than 0.2236 volts is, obviously, 2.236 volts. --- Jeff WN3A
Re: [Repeater-Builder] Re: Icom OPC-617 Cable
I soldered the f and D bead and sill wont work... I assume you meant you tried soldering D and F, but not both at the same time. Both at once is invalid, and maybe could cause the no tx audio. Maybe there is mic bias voltage on pin 4, and you are loading it down, causing the loss of tx audio. Try putting a capacitor in line. No Rx audio either? Tx and Rx reversed? Does the intercom require a COR input? What model intercom do you have? Duane On 7/26/2010 2:06 AM, ryan_151 wrote: I soldered the f and D bead and sill wont work,got the PTT to work but i still cant get any audio to transmit or recieve through the OPC-617 cable, i even took the mic out if my david clark head set connected it straight to the pin 4 and 8 and it still wont transmit my voice. --- In Repeater-Builder@yahoogroups.com, Duane Halldu...@... wrote: You would want Rx audio from 2 and 7, Tx audio in on 4 and 8, solder bead D in the radio. I dont recall if there is a VOX option in the radio. If the intercom is full duplex, how will you key up the radio (PTT)? DB9 1Dimmer in 2De-Emph Audio Out (affected by Vol Pot) 3Discriminator Audio (Un Squelched) 4Tx Mod In 5PTT in 6COR out (probably need a pull up resistor) 7Ground 8Ground 9Ground Pin 2 - You can set a minimum level via Set Mode Pin 4 - Tx freq response. Solder bead F for data, solder bead D for audio Pin 5 - Enable external PTT via software. CommonExpertEPTT Pin 6 - Enable COR via software. Disable the 2/5 tone function for the selected channel. CommonExpert RX EXO to ON, and delay timer to OFF Pinout info on page 16 at http://www.repeater-builder.com/icom/pdfs/icom-ic-f111-f121-f211-f221.pdf Duane AB8QU On 7/13/2010 10:28 PM, ryan_151 wrote: im trying to use the OPC-617 cable with an Icom f121 radio to connect it to an intercom and need to know how what pins to use to connect my mic+- audio into the F121 radio and the f121 radio audio out +-. Any help with this woud be great, Thanks
Re: [Repeater-Builder] showing our age (old HT's)
I still have a working HT-200 on 2 meters... (and a vibrator-supply 50's mobile on 34/94!) George, KA3HSW / WQGJ413 From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, July 25, 2010 9:00:36 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale.
Re: [Repeater-Builder] showing our age (old HT's)
I (and several others) have a Motorola HT-200 handie-talkie on 29.600 MHz. It's worked 33 states and Japan using the long whip antenna, running 1.4 watts output. Another local friend has an HT-200 on 52.525 MHz. -Original Message- From: George Henry Sent: Jul 27, 2010 11:07 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] showing our age (old HT's) I still have a working HT-200 on 2 meters... (and a vibrator-supply 50's mobile on 34/94!) George, KA3HSW / WQGJ413 From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, July 25, 2010 9:00:36 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale.
[Repeater-Builder] Service Manuals
Gentlemen (And Ladies) - I will be listing some service manuals over the next few weeks to months on our eBay store. If there is any interest in a particular manual (Mostly Kenwood and Motorolas) for the archives here, please feel free to let me know. I wanted to give the group exclusive notice so those that need them, can procure them. Cheers! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn
{Direct Reply}Re: [Repeater-Builder] Service Manuals
John- i am looking for a SpectraTAC Voter manual and a manual for a Micor 250W UHF PA- May be from a PURC station manual (Sorry, don't have the exact model # in front of me). Let me know if you might have either of these. Thanks!! Tom W9SRV --- On Tue, 7/27/10, La Rue Communications laruec...@gmail.com wrote: From: La Rue Communications laruec...@gmail.com Subject: [Repeater-Builder] Service Manuals To: Repeater-Builder@yahoogroups.com Date: Tuesday, July 27, 2010, 1:21 PM Gentlemen (And Ladies) - I will be listing some service manuals over the next few weeks to months on our eBay store. If there is any interest in a particular manual (Mostly Kenwood and Motorolas) for the archives here, please feel free to let me know. I wanted to give the group exclusive notice so those that need them, can procure them. Cheers! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn
Re: {Direct Reply}Re: [Repeater-Builder] Service Manuals
Sorry that was supposed to be direct..
Tom
--- On Tue, 7/27/10, TGundo 2003 tgundo2...@yahoo.com wrote:
From: TGundo 2003 tgundo2...@yahoo.com
Subject: {Direct Reply}Re: [Repeater-Builder] Service Manuals
To: Repeater-Builder@yahoogroups.com
Date: Tuesday, July 27, 2010, 1:29 PM
John-
i am looking for a SpectraTAC Voter manual and a manual for a Micor 250W UHF
PA- May be from a PURC station manual (Sorry, don't have the exact model # in
front of me). Let me know if you might have either of these.
Thanks!!
Tom
W9SRV
--- On Tue, 7/27/10, La Rue Communications laruec...@gmail.com wrote:
From: La Rue Communications laruec...@gmail.com
Subject: [Repeater-Builder] Service Manuals
To: Repeater-Builder@yahoogroups.com
Date: Tuesday, July 27, 2010, 1:21 PM
Gentlemen (And Ladies) -
I will be listing some service manuals over the
next few weeks to months on our eBay store. If there is any interest in a
particular manual (Mostly Kenwood and Motorolas) for the archives here, please
feel free to let me know. I wanted to give the group exclusive notice so those
that need them, can procure them.
Cheers!
John Hymes
La Rue Communications
10 S. Aurora
Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
[Repeater-Builder] GMRS License Help
I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail??
RE: [Repeater-Builder] 420Mhz Radio for Voter?
What is a good radio for building a one way 420 link? The link will be for a remote receiver and will not need to be duplex... RX at the voter and TX at the remote receiver. The link RX has to live on a noisy hill. Thanks for your advice. My preferences, in no particular order, would be Micor/SpectraTAC (low split), Mastr II (77 split), and Delta-S (low-split). MVP/Exec II (again, 77 split) would be fine too. All have excellent front ends. They can be found if you look a bit, especially check Canadian sources; they're not as easy to find stateside as 450-470 radios, but they're not unobtainium either. --- Jeff WN3A
Re: [Repeater-Builder] 420Mhz Radio for Voter?
And even the 88 split Mastr/MVP stuff works fine with minimal modification at 420. Most of it just tunes, thouhg you need to add some padding to get stuff the peak in a few cases. On 7/27/2010 1:17 PM, Jeff DePolo wrote: What is a good radio for building a one way 420 link? The link will be for a remote receiver and will not need to be duplex... RX at the voter and TX at the remote receiver. The link RX has to live on a noisy hill. Thanks for your advice. My preferences, in no particular order, would be Micor/SpectraTAC (low split), Mastr II (77 split), and Delta-S (low-split). MVP/Exec II (again, 77 split) would be fine too. All have excellent front ends. They can be found if you look a bit, especially check Canadian sources; they're not as easy to find stateside as 450-470 radios, but they're not unobtainium either. --- Jeff WN3A -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
Re: [Repeater-Builder] GMRS License Help
I got mine in the mail. -BDH On Tue, Jul 27, 2010 at 11:06 PM, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail?? Yahoo! Groups Links
Re: [Repeater-Builder] showing our age (old HT's)
Whaddaya mean lunchboxes don't count? I have a pair of GE Portamobile II's in the shop just begging to be recrystalled and ready to rock. If course, I was considering building those into APRS trackers or packet boxes, where everything was built inside, and all you needed to do was plug in a laptop. I dug an actual GE HandiTalkie out of the bottom of a box that was full of surplus stuff from the county. In that same lot was a couple of MX300s. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CalEMA 51-507 http://smokeybehr.blogspot.com http://www.myspace.com/smokeybehr - Original Message From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, July 25, 2010 7:00:36 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale. Yahoo! Groups Links
Re: [Repeater-Builder] GMRS License Help
You'll get a paper license in the mail 1-3 weeks after filing for the license. That license will have your call sign on it. Welcome to the service. -Brian On Tue, Jul 27, 2010 at 11:52 AM, ZPO geekdownra...@gmail.com wrote: I got mine in the mail. -BDH On Tue, Jul 27, 2010 at 11:06 PM, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail?? Yahoo! Groups Links Yahoo! Groups Links
Re: [Repeater-Builder] Re: Recommendations for a Voter Link
At 09:24 AM 07/27/10, you wrote: Mike Morris wa6...@... wrote: But there are ways around it. The simple method: Have a local 1950 oscillator at the voter site. It can be done with a 88mh toroid, a few resistors and caps, and a single transistor. Can't think of the last time I saw an 88mh Toroid for sale in any obvious location but I'm sure they're out there somewhere like Ebay. I found some of the newer one-chip GE Status Tone Encoders on Ebay a few months back and they were cheaper than I could have easily built them for. Sure. And I've also seen a status tone encoder made from a LM386. Naturally you'd want to use some high grade resistors and caps when building it. It drove an audio transformer... I have no idea where the guy found a transformer that eight 600 ohm windings... Have a SPDT reed relay driven by the link receiver RUS (or COR). Links can be on 420Mhz, 438-439Mhz, 900Mhz, or 1200 Mhz. ... and if you're creative some other places. The NC contact on the relay has 1950hz. NO contact has link receiver audio. Armature feeds voter card audio input. When channel is idle, card sees 1950hz and is happy. When channel is unsquelched card sees link receiver audio and votes. Wonder if the relay pole contact transition time contributes to any type of glitch, hunt, delay or erratic event that might otherwise not be there if you simply (resistance as an example) mixed and removed the Status Tone? Probably no more than the EM switching on a microwave shot. Reed relays last a long time - I've had used ones last 12 years, and new ones last 20, but you can use CMOS audio switches if you want. CD4053 and use the diagram from an ACC RC-85 Repeater Controller as your basic guide. Absolutely. Documentation on both vintages of the GE voter (grey paint is early, black paint is late) is on the GE LBI page at repeater- builder. Mike WA6ILQ The Spectra Tac Voter Manuals pop up on Ebay every so often as to the GE Version Manuals. If the manual is NLA from Moto we can scan it and post it. If you fool the status tone decoder with a local oscillator, keep in mind the level of the Status Tone also plays into the actual performance. It's not just a tone present or tone not present function. That's very true. But it's is one way to avoid 24/7 link duty cycle. Another is to configure the voter channel for EM and then drive the E leads with COR contacts. Mike WA6ILQ
RE: [Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham
Which 800 station are you trying to move? It needs to be an 896 station to actually work on 900 - the lower 800 radio won't go far out-of-band enough. Start here for info: http://www.repeater-builder.com/motorola/msf/msf-index.html Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of Chucklesk Sent: Tuesday, July 27, 2010 12:24 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham Well, I have heard that it can be done...question is how big a pain is it? We have access to a couple and before we nab them, wanted to feel out how much effort they would be or to wait for some other opportunity Also is it documented on the web anywhere?
Re: [Repeater-Builder] GMRS License Help
ULS License General Mobile Radio (GMRS) License - WQHI739 - Raker, Brian - Original Message - From: Brian Raker To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 3:22 PM Subject: Re: [Repeater-Builder] GMRS License Help You'll get a paper license in the mail 1-3 weeks after filing for the license. That license will have your call sign on it. Welcome to the service. -Brian On Tue, Jul 27, 2010 at 11:52 AM, ZPO geekdownra...@gmail.com wrote: I got mine in the mail. -BDH On Tue, Jul 27, 2010 at 11:06 PM, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail?? Yahoo! Groups Links Yahoo! Groups Links
RE: [Repeater-Builder] GMRS License Help
You can check the FCC ULS database under your name to see if they have the callsign listed. http://wireless.fcc.gov/uls/index.htm?job=home Click to search licenses, and enter the information pasrameter(s).. Mark - N9WYS From: Repeater-Builder@yahoogroups.com On Behalf Of Brian Raker You'll get a paper license in the mail 1-3 weeks after filing for the license. That license will have your call sign on it. Welcome to the service. -Brian On Tue, Jul 27, 2010 at 11:06 PM, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail??
Re: [Repeater-Builder] GMRS License Help
when did they raise the price? I remember paying $65 for mine and Mine haven't expired yet? On Tue, Jul 27, 2010 at 14:36, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail??
[Repeater-Builder] Re: 420Mhz Radio for Voter?
Jeff, When you say low split, are you talking about the Motorola TRE1201/TRE8031 406-420 Mhz receivers? What Canadian sources might have these? --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: What is a good radio for building a one way 420 link? The link will be for a remote receiver and will not need to be duplex... RX at the voter and TX at the remote receiver. The link RX has to live on a noisy hill. Thanks for your advice. My preferences, in no particular order, would be Micor/SpectraTAC (low split), Mastr II (77 split), and Delta-S (low-split). MVP/Exec II (again, 77 split) would be fine too. All have excellent front ends. They can be found if you look a bit, especially check Canadian sources; they're not as easy to find stateside as 450-470 radios, but they're not unobtainium either. --- Jeff WN3A
Re: [Repeater-Builder] GMRS License Help
Thank you Steven for showing me something that I already know... -Brian On Tue, Jul 27, 2010 at 1:01 PM, Steven M Hodell st...@shodell.net wrote: ULS License General Mobile Radio (GMRS) License - WQHI739 - Raker, Brian - Original Message - From: Brian Raker To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 3:22 PM Subject: Re: [Repeater-Builder] GMRS License Help You'll get a paper license in the mail 1-3 weeks after filing for the license. That license will have your call sign on it. Welcome to the service. -Brian On Tue, Jul 27, 2010 at 11:52 AM, ZPO geekdownra...@gmail.com wrote: I got mine in the mail. -BDH On Tue, Jul 27, 2010 at 11:06 PM, Andy agrimm0...@yahoo.com wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail?? Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links
[Repeater-Builder] Re: GMRS License Help
I don't know. I just know I had to pay 85.00 --- In Repeater-Builder@yahoogroups.com, AARON LEWIS DINKIN cyan@... wrote: when did they raise the price? I remember paying $65 for mine and Mine haven't expired yet? On Tue, Jul 27, 2010 at 14:36, Andy agrimm0...@... wrote: I just applied for my GMRS license yesturday evening. I got a confirmation email saying that I did pay my 85.00 bucks. How do I know what my call sign is and all my license information. Will I get another email when all the data is processed by the FCC and everything is confirmed. Will they mail my license to me in the mail??
RE: [Repeater-Builder] Re: 420Mhz Radio for Voter?
When you say low split, are you talking about the Motorola TRE1201/TRE8031 406-420 Mhz receivers? I don't have a manual in front of me, but yes, 406-420 receivers, they'll work fine well into the mid 430's without mods. What Canadian sources might have these? Well, Spantek comes to mind as a dealer. CW Wolfe used to get a lot of stuff out of Canada, but I haven't talked to Bud in quite a few years, not sure if he's still in business. This list is probably the best resource. eBay as an alternative. If you get desperate I still have a few dozen low-split Micors in the warehouse, but really don't have the time (or patience) to deal with packing and shipping radios for what few dollars I'd get out of them (i.e. value of my time $value of radio). But if you just wanted a receiver, you can consider me a last resort if you strike out everywhere else... --- Jeff WN3A --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Jeff DePolo j...@... wrote: What is a good radio for building a one way 420 link? The link will be for a remote receiver and will not need to be duplex... RX at the voter and TX at the remote receiver. The link RX has to live on a noisy hill. Thanks for your advice. My preferences, in no particular order, would be Micor/SpectraTAC (low split), Mastr II (77 split), and Delta-S (low-split). MVP/Exec II (again, 77 split) would be fine too. All have excellent front ends. They can be found if you look a bit, especially check Canadian sources; they're not as easy to find stateside as 450-470 radios, but they're not unobtainium either. --- Jeff WN3A
Re: [Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham
it looks like the 800 Mhz on. C85CXB5103BT On Tue, Jul 27, 2010 at 2:58 PM, Mark n9...@ameritech.net wrote: Which 800 station are you trying to move? It needs to be an 896 station to actually work on 900 - the lower 800 radio won't go far out-of-band enough. Start here for info: http://www.repeater-builder.com/motorola/msf/msf-index.html Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of Chucklesk Sent: Tuesday, July 27, 2010 12:24 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham Well, I have heard that it can be done...question is how big a pain is it? We have access to a couple and before we nab them, wanted to feel out how much effort they would be or to wait for some other opportunity Also is it documented on the web anywhere? Yahoo! Groups Links
[Repeater-Builder] Re: Moving a MSF5000 from 800 to 900 Ham
Sory I meant the lower 800 Mhz one./...not the 896Mhz split --- In Repeater-Builder@yahoogroups.com, Chuck Kraly ckr...@... wrote: it looks like the 800 Mhz on. C85CXB5103BT On Tue, Jul 27, 2010 at 2:58 PM, Mark n9...@... wrote: Which 800 station are you trying to move? It needs to be an 896 station to actually work on 900 - the lower 800 radio won't go far out-of-band enough. Start here for info: http://www.repeater-builder.com/motorola/msf/msf-index.html Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of Chucklesk Sent: Tuesday, July 27, 2010 12:24 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Moving a MSF5000 from 800 to 900 Ham Well, I have heard that it can be done...question is how big a pain is it? We have access to a couple and before we nab them, wanted to feel out how much effort they would be or to wait for some other opportunity Also is it documented on the web anywhere? Yahoo! Groups Links
[Repeater-Builder] STK-077
Greetings to all, I apologise for enquiring about a medium frequency component on a Group that works on VHF and above, but I would be grateful if anyone can point me towards a supplier of STK-077 power transistors or their equivalents. I have inherited an Icom IC720A that has suffered from a fire in the output stages. I plan to rebuild it, if I can locate replacement amplifiers. Thanks, Gordon ZL1KL. Tauranga N.Z
[Repeater-Builder] MTR 2000 Help
I have a MTR 2000 for the 900 MHz band (hacked to the ham band). It has never been used as a repeater since I acquired it a few years ago, but was scheduled to be on my 927.1125 repeater freq. one of these days. I turned it ON after it had been OFF for a better part of a year (out in the garage but dry). It came on, but instead of the green LED staying lit after it warmed up, the 4 LEDs blinked for sometime and then the red LED (far left) stays lit. The manual says that means a major malfunction. Before I dig into the repeater, does anyone have an idea what has happened? I had just successfully reprogrammed it to a new freq. pair, but this situation has cropped up. Roger W5RDW Murphy, Texas
Re: [Repeater-Builder] MTR 2000 Help
Are all the original cards in it when it was programmed? If it was programmed with any optional boards installed they must be in place at all times after. Also have you've added any cards after programming that will also cause this fail. Ross kc7rjk From: w5rdw Sent: Tuesday, July 27, 2010 2:57 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MTR 2000 Help I have a MTR 2000 for the 900 MHz band (hacked to the ham band). It has never been used as a repeater since I acquired it a few years ago, but was scheduled to be on my 927.1125 repeater freq. one of these days. I turned it ON after it had been OFF for a better part of a year (out in the garage but dry). It came on, but instead of the green LED staying lit after it warmed up, the 4 LEDs blinked for sometime and then the red LED (far left) stays lit. The manual says that means a major malfunction. Before I dig into the repeater, does anyone have an idea what has happened? I had just successfully reprogrammed it to a new freq. pair, but this situation has cropped up. Roger W5RDW Murphy, Texas
Re: [Repeater-Builder] showing our age (old HT's)
Wow.. memories... A Link 50UFS low band base station.. We have one here, too... Still works. Lance N2HBA - Original Message - From: La Rue Communications To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 4:20 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) I think I automatically disqualify myself since I dont know too much about our units. But one of the cornerstone pieces of our shop is our Link Repeater. Im not trying to one up anyone - but rather share and get into the OLD stuff with the rest of ya. I also dont think I qualify because I grew up on CHiPs and Dukes of Hazard. :) So overlook that little fact and let me ask if anyone has dabbled with this machine? (See attached) John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: John Gleichweit To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 12:04 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) Whaddaya mean lunchboxes don't count? I have a pair of GE Portamobile II's in the shop just begging to be recrystalled and ready to rock. If course, I was considering building those into APRS trackers or packet boxes, where everything was built inside, and all you needed to do was plug in a laptop. I dug an actual GE HandiTalkie out of the bottom of a box that was full of surplus stuff from the county. In that same lot was a couple of MX300s. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CalEMA 51-507 http://smokeybehr.blogspot.com http://www.myspace.com/smokeybehr - Original Message From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, July 25, 2010 7:00:36 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale. Yahoo! Groups Links
Re: [Repeater-Builder] MTR 2000 Help
All original cards are in I assume as I have never taken the radio apart. When I bought it, I successfully programmed the ham band freqs 927.1125/902.1125/tone access, etc. I used it at home as a backyard repeater mainly just learning how to set the audio, etc.. I put it aside for about a year until just recently when it showed the problem after I turned it on. I have never removed any cards from it, etc. never opened it in fact. Roger - Original Message - From: Ross Johnson To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 5:50 PM Subject: Re: [Repeater-Builder] MTR 2000 Help Are all the original cards in it when it was programmed? If it was programmed with any optional boards installed they must be in place at all times after. Also have you've added any cards after programming that will also cause this fail. Ross kc7rjk From: w5rdw Sent: Tuesday, July 27, 2010 2:57 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MTR 2000 Help I have a MTR 2000 for the 900 MHz band (hacked to the ham band). It has never been used as a repeater since I acquired it a few years ago, but was scheduled to be on my 927.1125 repeater freq. one of these days. I turned it ON after it had been OFF for a better part of a year (out in the garage but dry). It came on, but instead of the green LED staying lit after it warmed up, the 4 LEDs blinked for sometime and then the red LED (far left) stays lit. The manual says that means a major malfunction. Before I dig into the repeater, does anyone have an idea what has happened? I had just successfully reprogrammed it to a new freq. pair, but this situation has cropped up. Roger W5RDW Murphy, Texas
Re: [Repeater-Builder] showing our age (old HT's)
How about a GE PR 36? Does that qualify for old? (Esentially I think anything in our two-way museum that we're getting set up eventually qualifies as old) :-) Nice thing about the older gear - is that its SO hardy! Incredible that some of the stuff we have thats old and obsolete still works and works well! Whereas a lot of newer gear, if it got to be as old as the old stuff would be worthless and junked as forever inoperable! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: Captainlance To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 4:02 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) Wow.. memories... A Link 50UFS low band base station.. We have one here, too... Still works. Lance N2HBA - Original Message - From: La Rue Communications To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 4:20 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) I think I automatically disqualify myself since I dont know too much about our units. But one of the cornerstone pieces of our shop is our Link Repeater. Im not trying to one up anyone - but rather share and get into the OLD stuff with the rest of ya. I also dont think I qualify because I grew up on CHiPs and Dukes of Hazard. :) So overlook that little fact and let me ask if anyone has dabbled with this machine? (See attached) John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: John Gleichweit To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 12:04 PM Subject: Re: [Repeater-Builder] showing our age (old HT's) Whaddaya mean lunchboxes don't count? I have a pair of GE Portamobile II's in the shop just begging to be recrystalled and ready to rock. If course, I was considering building those into APRS trackers or packet boxes, where everything was built inside, and all you needed to do was plug in a laptop. I dug an actual GE HandiTalkie out of the bottom of a box that was full of surplus stuff from the county. In that same lot was a couple of MX300s. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CalEMA 51-507 http://smokeybehr.blogspot.com http://www.myspace.com/smokeybehr - Original Message From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, July 25, 2010 7:00:36 PM Subject: [Repeater-Builder] showing our age (old HT's) Allow me to show my age ... To me, the HT-220 is/was a Xtal Controlled Ht !! Allow me to show my age... The HT here is a VHF Engineering 2 Meter Portable assembled from a kit... and it still works. :-) s. ps: Surplus Motorola and GE Lunch Boxes don't count on the bragging scale. Yahoo! Groups Links
[Repeater-Builder] Re: Motorola R-2200A User Manual
Jack, Does it have a long number on the bottom right corner?? (On the front cover) Robert KD4YDC --- In Repeater-Builder@yahoogroups.com, Jack Chomley ra...@... wrote: Robert, I have a user manual for my R-2200B, not sure of the similarities between the 2 models? Cheers, Jack VK4JRC Sent from my Apple iPad Tablet PC On Jul 26, 2010, at 12:32 PM, Robert kd4...@... wrote: Thanks for the reply Eric, I have the Maintenance Manual. Did they make a How To type of manual? I know a little bit, but really not sure how to navigate around it. Anyone? Robert KD4YDC --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6fly@ wrote: Robert, I have good news and bad news. The bad news is that the R2200-series Operator's Manual 6881069A79 is out of print and is NLA. The good news is that the R2200A Maintenance Manual 6991069A76 is still available from Motorola Parts, for about $58. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Robert Sent: Sunday, July 25, 2010 5:25 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola R-2200A User Manual Does anyone have a link to this? Would love it if this was in pdf as well ;-) 73, Robert KD4YDC
Re: [Repeater-Builder] showing our age (old HT's)
Ok, since it appear to be nostalgia time... Back in 70/71, my aunt gave me a call about getting rid of some radio equipment in a storage room. She and her husband had owned the checker cab company in San Antonio. I went down looked, and found a 'treasure trove' of goodies. Frankly, at the time I was a real newbie into FM, just out of high school and into my 1st year of college. I loaded up my car with the best looking ones (further trips were made), and was responsible for getting a bunch of guys in Texas into 2m FM. I had buckets full of 41v's, some 'T-power' (kept a couple for myself), and even some 5v's. Selling price was $50. Most went back to my aunt, but I got some freebie radios out of the deal. Still have a couple of the 'tuning wands'. :-) Then there was the HT220 with the add on frequency synthesizer.. think it was in the 'omni case'... allowed you to receive on several frequencies all at the same time. (phase noise). Also had to program with a dip-switch. Ok... one more... remember when Digi-key sold an electronic keyer kit? (think it was their first product). Sure was hard trying to find replacement high voltage keying transistors after I fried it on my cathode keyed xmtr. That's all!! Tim
[Repeater-Builder] Re: 420Mhz Radio for Voter?
Thanks Jeff, I'll keep looking around for those low split UHF Micor receivers. What about the transmit side? Maybe I should look for a unified chassis low split UHF repeater. Swap out the UHF receiver for a VHF high band receiver and use that for my remote receiver site. Then use the low split UHF receiver on the other end of the link. That make sense? --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: When you say low split, are you talking about the Motorola TRE1201/TRE8031 406-420 Mhz receivers? I don't have a manual in front of me, but yes, 406-420 receivers, they'll work fine well into the mid 430's without mods. What Canadian sources might have these? Well, Spantek comes to mind as a dealer. CW Wolfe used to get a lot of stuff out of Canada, but I haven't talked to Bud in quite a few years, not sure if he's still in business. This list is probably the best resource. eBay as an alternative. If you get desperate I still have a few dozen low-split Micors in the warehouse, but really don't have the time (or patience) to deal with packing and shipping radios for what few dollars I'd get out of them (i.e. value of my time $value of radio). But if you just wanted a receiver, you can consider me a last resort if you strike out everywhere else... --- Jeff WN3A --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Jeff DePolo jd0@ wrote: What is a good radio for building a one way 420 link? The link will be for a remote receiver and will not need to be duplex... RX at the voter and TX at the remote receiver. The link RX has to live on a noisy hill. Thanks for your advice. My preferences, in no particular order, would be Micor/SpectraTAC (low split), Mastr II (77 split), and Delta-S (low-split). MVP/Exec II (again, 77 split) would be fine too. All have excellent front ends. They can be found if you look a bit, especially check Canadian sources; they're not as easy to find stateside as 450-470 radios, but they're not unobtainium either. --- Jeff WN3A
[Repeater-Builder] Base station coax connector weatherproofing recommendations?
Any recommendations or best practices on weatherproofing the coax connection to a base station antenna? The Comtelco XL (or horrors! Antenex FG) series both have a drain system at the base that need to remain open. Is it as simple as some coax seal and avoid plugging the drain holes? Any recommendations on using heat shrink at the cable end of the coax connector? Does it help, or does it eventually wind up as a moisture reservoir?
RE: [Repeater-Builder] MTR 2000 Help
Mouse corrosion? _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of w5rdw Sent: Tuesday, July 27, 2010 5:58 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MTR 2000 Help I have a MTR 2000 for the 900 MHz band (hacked to the ham band). It has never been used as a repeater since I acquired it a few years ago, but was scheduled to be on my 927.1125 repeater freq. one of these days. I turned it ON after it had been OFF for a better part of a year (out in the garage but dry). It came on, but instead of the green LED staying lit after it warmed up, the 4 LEDs blinked for sometime and then the red LED (far left) stays lit. The manual says that means a major malfunction. Before I dig into the repeater, does anyone have an idea what has happened? I had just successfully reprogrammed it to a new freq. pair, but this situation has cropped up. Roger W5RDW Murphy, Texas
Re: [Repeater-Builder] MTR 2000 Help
I will take any advice, no matter what. I will look down in the innards tomorrow! I remember when a cat decided to take up residence in my wife's car years ago. It didn't stay long under the hood when she started the car one cold morning! It kinda limped out of the garage! Roger W5RDW - Original Message - From: Kevin King To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 7:35 PM Subject: RE: [Repeater-Builder] MTR 2000 Help Mouse corrosion? -- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of w5rdw Sent: Tuesday, July 27, 2010 5:58 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MTR 2000 Help I have a MTR 2000 for the 900 MHz band (hacked to the ham band). It has never been used as a repeater since I acquired it a few years ago, but was scheduled to be on my 927.1125 repeater freq. one of these days. I turned it ON after it had been OFF for a better part of a year (out in the garage but dry). It came on, but instead of the green LED staying lit after it warmed up, the 4 LEDs blinked for sometime and then the red LED (far left) stays lit. The manual says that means a major malfunction. Before I dig into the repeater, does anyone have an idea what has happened? I had just successfully reprogrammed it to a new freq. pair, but this situation has cropped up. Roger W5RDW Murphy, Texas
RE: [Repeater-Builder] Re: Motorola R-2200A User Manual
Robert, Perhaps we are stuck on semantics here. There are only two manuals ever published for the R2200-series monitors- the two I mentioned. The Operator's Manual is the one you seek. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Robert Sent: Sunday, July 25, 2010 7:32 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Motorola R-2200A User Manual Thanks for the reply Eric, I have the Maintenance Manual. Did they make a How To type of manual? I know a little bit, but really not sure how to navigate around it. Anyone? Robert KD4YDC --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Eric Lemmon wb6...@... wrote: Robert, I have good news and bad news. The bad news is that the R2200-series Operator's Manual 6881069A79 is out of print and is NLA. The good news is that the R2200A Maintenance Manual 6991069A76 is still available from Motorola Parts, for about $58. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Robert Sent: Sunday, July 25, 2010 5:25 AM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] Motorola R-2200A User Manual Does anyone have a link to this? Would love it if this was in pdf as well ;-) 73, Robert KD4YDC
RE: [Repeater-Builder] Re: Motorola R-2200A User Manual
Jack, What is the publication number of your manual? It's probably the document Robert is looking for. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jack Chomley Sent: Tuesday, July 27, 2010 3:07 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Motorola R-2200A User Manual Robert, I have a user manual for my R-2200B, not sure of the similarities between the 2 models? Cheers, Jack VK4JRC Sent from my Apple iPad Tablet PC On Jul 26, 2010, at 12:32 PM, Robert kd4...@juno.com mailto:kd4...@juno.com wrote: Thanks for the reply Eric, I have the Maintenance Manual. Did they make a How To type of manual? I know a little bit, but really not sure how to navigate around it. Anyone? Robert KD4YDC --- In mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com , Eric Lemmon wb6...@... wrote: Robert, I have good news and bad news. The bad news is that the R2200-series Operator's Manual 6881069A79 is out of print and is NLA. The good news is that the R2200A Maintenance Manual 6991069A76 is still available from Motorola Parts, for about $58. 73, Eric Lemmon WB6FLY -Original Message- From: mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com [mailto: mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com ] On Behalf Of Robert Sent: Sunday, July 25, 2010 5:25 AM To: mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola R-2200A User Manual Does anyone have a link to this? Would love it if this was in pdf as well ;-) 73, Robert KD4YDC
[Repeater-Builder] Re: Icom OPC-617 Cable
Your right i did solder the d and f at the same time. The intercom is a Flightcom 403mc. Ive talked to a few people and it seems the inpedance in my intercom and radio might not match and i need to find out how to change it so they match. this is all new learning for me! --- In Repeater-Builder@yahoogroups.com, Duane Hall du...@... wrote: I soldered the f and D bead and sill wont work... I assume you meant you tried soldering D and F, but not both at the same time. Both at once is invalid, and maybe could cause the no tx audio. Maybe there is mic bias voltage on pin 4, and you are loading it down, causing the loss of tx audio. Try putting a capacitor in line. No Rx audio either? Tx and Rx reversed? Does the intercom require a COR input? What model intercom do you have? Duane On 7/26/2010 2:06 AM, ryan_151 wrote: I soldered the f and D bead and sill wont work,got the PTT to work but i still cant get any audio to transmit or recieve through the OPC-617 cable, i even took the mic out if my david clark head set connected it straight to the pin 4 and 8 and it still wont transmit my voice. --- In Repeater-Builder@yahoogroups.com, Duane Hallduane@ wrote: You would want Rx audio from 2 and 7, Tx audio in on 4 and 8, solder bead D in the radio. I dont recall if there is a VOX option in the radio. If the intercom is full duplex, how will you key up the radio (PTT)? DB9 1Dimmer in 2De-Emph Audio Out (affected by Vol Pot) 3Discriminator Audio (Un Squelched) 4Tx Mod In 5PTT in 6COR out (probably need a pull up resistor) 7Ground 8Ground 9Ground Pin 2 - You can set a minimum level via Set Mode Pin 4 - Tx freq response. Solder bead F for data, solder bead D for audio Pin 5 - Enable external PTT via software. CommonExpertEPTT Pin 6 - Enable COR via software. Disable the 2/5 tone function for the selected channel. CommonExpert RX EXO to ON, and delay timer to OFF Pinout info on page 16 at http://www.repeater-builder.com/icom/pdfs/icom-ic-f111-f121-f211-f221.pdf Duane AB8QU On 7/13/2010 10:28 PM, ryan_151 wrote: im trying to use the OPC-617 cable with an Icom f121 radio to connect it to an intercom and need to know how what pins to use to connect my mic+- audio into the F121 radio and the f121 radio audio out +-. Any help with this woud be great, Thanks
Re: [Repeater-Builder] Re: Repeater receiver testing
At 7/27/2010 10:29 AM, you wrote:  Get a Mac. Much more efficient and crash free.. At the last coordinators' meeting I attended there was one laptop crash... Yup, it was a Mac ;) Bob NO6B
RE: [Repeater-Builder] Service Manuals
John, Before divesting yourself of (possibly rare) service manuals, please review the Repeater-Builder listings to see if any of them might be a candidate for scanning (only if they are out of print) and subsequent posting on the RBTIP for download. A number of very generous folks (you know who you are!) have recently loaned manuals to the RBTIP scanning team for conversion into full-page PDF files. As a result, some manuals that have great historic value are preserved for the benefit of everyone in the radio hobby. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of La Rue Communications Sent: Tuesday, July 27, 2010 11:22 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Service Manuals Gentlemen (And Ladies) - I will be listing some service manuals over the next few weeks to months on our eBay store. If there is any interest in a particular manual (Mostly Kenwood and Motorolas) for the archives here, please feel free to let me know. I wanted to give the group exclusive notice so those that need them, can procure them. Cheers! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn http://tinyurl.com/2dtngmn
Re: [Repeater-Builder] Re: Repeater receiver testing
At 7/27/2010 10:15 AM, you wrote: case you haven't figured that out)). By the way, the GE PLL exciter has 22 dB less phase noise at 600 kHz from its primary carrier than does its multiplier counterpart, you can bet it's way more than that at 6 MHz. That 22 dB is an interesting figure: the amount of increased phase noise contribution as a result of multiplication is 20*log(N), where N is the multiplication factor. The multiplied-crystal G.E VHFHB exciter's multiplication factor is 12, which gives 20*log(12)=21.58 dB! My theoretical guess as to what would happen @ 6 MHz out is that the difference in phase noise between the 2 exciters would greatly diminish due to the Q of the tuned stages in the multiplied exciter kicking in. Bob NO6B
Re: [Repeater-Builder] Re: Repeater receiver testing
Yep, Mac's crash all the time. They get virus' too. Chuck WB2EDV - Original Message - From: n...@no6b.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 27, 2010 9:38 PM Subject: Re: [Repeater-Builder] Re: Repeater receiver testing At 7/27/2010 10:29 AM, you wrote:  Get a Mac. Much more efficient and crash free.. At the last coordinators' meeting I attended there was one laptop crash... Yup, it was a Mac ;) Bob NO6B
Re: [Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
I'm not aware of any training for the IFR products, but I did just download an Application Notes for the IFR1500 to: http://groups.yahoo.com/group/Repeater-Builder/files/IFR1500%20Application%20Notes/ Many of the applications for the IFR1500 will be similar to the IFR1200S 73, Joe, K1ike On 7/27/2010 12:25 PM, Tommy Dow wrote: Hi, I recently aquired an IFR 1200S and was wondering if similiar training info exists for this machine like the HP? Tom
[Repeater-Builder] MSF5000 CXB
Hi All I would like to let you all know I have a MSF 5000 CXB for sale. If you would like to know more email me at kd7...@comcast.net Thanks Bob
[Repeater-Builder] Re: Base station coax connector weatherproofing recommendations?
I was taught by an old ham who did a lot of commercial installations the following. His advice was to use good quality tape 3M 33 or 88 tape. Start at the connector wrap downward past the connector. Spray with clear spray paint. Wrap 2 starts at the bottom the the 1st wrap go upward to the connector. Apply another coat of clear spray to seal the tape. Layer 3 starts at the connector again and goes downward past the end of previous wraps. Spray again. This gives a good water tight job. When you are inspecting the antenna you simply note the direction of the tape if it should come lose. You'll know how immediately it may or may not need attention. I did this after pealing off the sticky mess of coax seal on a rooftop installation. The previous installer was even so thoughtful as to plug the hole in the base of the Stationmaster. Actually the only thing holding the connector to the hardline was the seal as I suspected by the noise when the wind picked up. Several years of PA failures, some years it was twice a year, were history. Tony --- In Repeater-Builder@yahoogroups.com, jland138 jland...@... wrote: Any recommendations or best practices on weatherproofing the coax connection to a base station antenna? The Comtelco XL (or horrors! Antenex FG) series both have a drain system at the base that need to remain open. Is it as simple as some coax seal and avoid plugging the drain holes? Any recommendations on using heat shrink at the cable end of the coax connector? Does it help, or does it eventually wind up as a moisture reservoir?
RE: [Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad
Great thank-you for the fast responses. looks like I didn't get deep enough on RB. Web searches are getting harder and harder to find information like that. Looks like I have some reading to do. Thanks again Ross kc7rjk -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of radioman762 Sent: Tuesday, July 27, 2010 8:10 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Service monitor newbie questions, Determining RX sensitivity with HP 8924C at 12db sinad There is also a Yahoo group for these units. Search for hp8924 (without the quotes, of course).
RE: [Repeater-Builder] Re: Base station coax connector weatherproofing recommendations?
Nitto make a good self sealing rubber tape which is perfect and lives for years which is cheap and quick wind towrds the connector and it will seal without paints in a few minutes only thi g is it is a little tough once weathered to remove and break the seal To: Repeater-Builder@yahoogroups.com From: tonyn2...@gmail.com Date: Wed, 28 Jul 2010 03:08:17 + Subject: [Repeater-Builder] Re: Base station coax connector weatherproofing recommendations? I was taught by an old ham who did a lot of commercial installations the following. His advice was to use good quality tape 3M 33 or 88 tape. Start at the connector wrap downward past the connector. Spray with clear spray paint. Wrap 2 starts at the bottom the the 1st wrap go upward to the connector. Apply another coat of clear spray to seal the tape. Layer 3 starts at the connector again and goes downward past the end of previous wraps. Spray again. This gives a good water tight job. When you are inspecting the antenna you simply note the direction of the tape if it should come lose. You'll know how immediately it may or may not need attention. I did this after pealing off the sticky mess of coax seal on a rooftop installation. The previous installer was even so thoughtful as to plug the hole in the base of the Stationmaster. Actually the only thing holding the connector to the hardline was the seal as I suspected by the noise when the wind picked up. Several years of PA failures, some years it was twice a year, were history. Tony --- In Repeater-Builder@yahoogroups.com, jland138 jland...@... wrote: Any recommendations or best practices on weatherproofing the coax connection to a base station antenna? The Comtelco XL (or horrors! Antenex FG) series both have a drain system at the base that need to remain open. Is it as simple as some coax seal and avoid plugging the drain holes? Any recommendations on using heat shrink at the cable end of the coax connector? Does it help, or does it eventually wind up as a moisture reservoir?
Re: [Repeater-Builder] Re: Base station coax connector weatherproofing recommendations?
--- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com, jland138 jland...@... wrote: Any recommendations or best practices on weatherproofing the coax connection to a base station antenna? I use a layer of self vulcanizing silicone tape stretched and overlapped to spec. This is then covered with with two layers of Scotch 88 stretched to spec and overlapped half it's wide. Absolutely clean, uncreased and unwrinkled wraps are essential. A lot of people use a coating of Scotchkote, but I've not seen the value. The beauty of this is that every joint I've done this way has been clean and dry when I've cut it open 10 days or 10 years later it peels clean and is clean and dry. I've had installs in Texas, on the coast, on Colorado mountain tops, and on platforms at sea. It just works. The weak point is that the 88 drys out after a while, but is still good for 10 years of hard UV exposure if properly applied (50% overlap, appropriate stretch, and a no-stretch 2 turn finish on clean tape. The Comtelco XL (or horrors! Antenex FG) series both have a drain system at the base that need to remain open. Is it as simple as some coax seal and avoid plugging the drain holes? Coax seal is messy and make maintenance a rectal trauma (at best) or impossible. Any recommendations on using heat shrink at the cable end of the coax connector? Does it help, or does it eventually wind up as a moisture reservoir? The adhesive bearing shrink is the only real option here. POS (plain old shrink) will eventually wick moisture. You need to make sure that whatever you use remains flexible after shrinking, if not it will leak. -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
RE: [Repeater-Builder] Re: Base station coax connector weatherproofing recommendations?
Tony, Your mentor has the right idea, but a minor change might help. First of all, regardless of the tape used, it should *always* be wrapped from bottom to top, so that it sheds water. Doing it from top to bottom will bring water into the splice- not good! The preferred method of waterproofing connectors starts with Scotch 130C Linerless Rubber Splicing Tape. This is self-vulcanizing tape that is used for high-voltage (12,000 and up) splices, and is the primary waterproofing layer. Follow this with two layers of Scotch Super 88 Vinyl Tape- this stuff is much better than 33 tape, which itself is great stuff. Finally, coat the whole splice with Scotchkote Electrical Sealant. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tony Sent: Tuesday, July 27, 2010 8:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Base station coax connector weatherproofing recommendations? I was taught by an old ham who did a lot of commercial installations the following. His advice was to use good quality tape 3M 33 or 88 tape. Start at the connector wrap downward past the connector. Spray with clear spray paint. Wrap 2 starts at the bottom the the 1st wrap go upward to the connector. Apply another coat of clear spray to seal the tape. Layer 3 starts at the connector again and goes downward past the end of previous wraps. Spray again. This gives a good water tight job. When you are inspecting the antenna you simply note the direction of the tape if it should come lose. You'll know how immediately it may or may not need attention. I did this after pealing off the sticky mess of coax seal on a rooftop installation. The previous installer was even so thoughtful as to plug the hole in the base of the Stationmaster. Actually the only thing holding the connector to the hardline was the seal as I suspected by the noise when the wind picked up. Several years of PA failures, some years it was twice a year, were history. Tony --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , jland138 jland...@... wrote: Any recommendations or best practices on weatherproofing the coax connection to a base station antenna? The Comtelco XL (or horrors! Antenex FG) series both have a drain system at the base that need to remain open. Is it as simple as some coax seal and avoid plugging the drain holes? Any recommendations on using heat shrink at the cable end of the coax connector? Does it help, or does it eventually wind up as a moisture reservoir?
RE: [Repeater-Builder] Digest Number 7357
I remember that too Ken! I miss SAROC! And for your SoCal types.. I remember seeing Dick McKay walking around the Sahara in Vegas, talking into a Motorola mic (with just the coil cord hanging down) and listening on '94. This was during SAROC in the 70's Ken _ Hotmail is redefining busy with tools for the New Busy. Get more from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2
[Repeater-Builder] Re: Base station coax connector weatherproofing recommendations?
I'll second that, Eric. Have used that same procedure and materials for years on thousands of connections in the cellular industry. The only failures have been due to human error in the proper application, or birds pecking the joint apart. Scotch 130C is excellent stuff. I wouldn't use anything else. Google is and read the datasheet to read the proper application technique (sticky side out). Cheers! Lee --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Tony, Your mentor has the right idea, but a minor change might help. First of all, regardless of the tape used, it should *always* be wrapped from bottom to top, so that it sheds water. Doing it from top to bottom will bring water into the splice- not good! The preferred method of waterproofing connectors starts with Scotch 130C Linerless Rubber Splicing Tape. This is self-vulcanizing tape that is used for high-voltage (12,000 and up) splices, and is the primary waterproofing layer. Follow this with two layers of Scotch Super 88 Vinyl Tape- this stuff is much better than 33 tape, which itself is great stuff. Finally, coat the whole splice with Scotchkote Electrical Sealant. 73, Eric Lemmon WB6FLY
[Repeater-Builder] Re: Digest Number 7357
Hey Guys, I remember those days and still have both an HT-200 and HT-220 on 2 Meters. Can anyone tell me what happened to SAROC? When I was active in the 70's it was SAROC and Fresno that I remember most. Then when I got back into the loop SAROC was gone and I never heard the story as to why it went away. Heck I Even made a couple trips to the Reno Hamfest back in the day. Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, tony dinkel tonydinke...@... wrote: I remember that too Ken! I miss SAROC! And for your SoCal types.. I remember seeing Dick McKay walking around the Sahara in Vegas, talking into a Motorola mic (with just the coil cord hanging down) and listening on '94. This was during SAROC in the 70's Ken _ Hotmail is redefining busy with tools for the New Busy. Get more from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2
