[Repeater-Builder] Re: VHF Duplexer problem - help?
HI Dave, Those small piston caps are known to fail mechanically as well as electrically. Usually you can tell because they don't feel as smooth and don't tune as 'linear' as good ones. Sometimes it seems like they have a 'bad spot'. When they are bad like that, you can still get them to appear to work 100% on generator tests but they will cause all sorts of QRM once you put some power into them. The caps are easy to replace and are available from Sinclair...I think the price was around $12cdn but its been awhile. There was a guy in Ont. selling complete sets of loops and caps on Ebay.(VHF ones) Have also had to replace them on UHF duplexers. 73, Ron VE1AIC --- In Repeater-Builder@yahoogroups.com, "ve7ltd" <[EMAIL PROTECTED]> wrote: > > I was helping a local group tune a 6 cavity Sinclair Q2330 VHF > duplexer. With a spectrum analyzer, I was able to get the pass/notch > looking really good into a dummy load. > > I did notice that one of the capacitors did not tune linearly. All > of the other caps would tune the notch smoothly as it approached the > correct notch frequency. This one cap would tune weird. As you > rotated it on one direction, it would tune the notch closer, then > farther, then closer, then father. All the other caps would only > move linearly in one direction when rotated. > > When hooked up at the site, there is not a lot of loss either on the > RX or the TX. But as soon as the transmitter comes on, no matter > what the power output, there is a huge amount of RX noise generated, > whether terminated with a load or the antenna. The noise is also > intermittent - It comes and goes. If that suspect cap is turned > under any transmit load, it crackles loudly. None of the other caps > exhibit this behaviour. The noise desenses the receiver badly. > > I have not scoped the transmitter yet, but it was working fine when > removed from service (GE MASTR II 40 W station). I also have used > and tuned many of these in the past, and they all have worked fine. > > There was signs of lightning damage on an old antenna they removed > from the site a few years ago (the cable harness in a Sinclair 210C- > 4 was burned in one dipole. I am unsure if they replaced the > feedline. There is no reflected power. > > The duplexer also was originally tuned in the low 160's and I am > aware that the harness may need to be changed. > > Here are my questions: > 1) Besides the weird behaviour, is there any way to test if the cap > is bad? > > 2) If there is lightning damage, where/how may it be visible? Is it > repairable? Where would I find a replacement cap? > > 3) Does the fact that the system works fine with a signal generator > and sprectrum analyzer suggest that the problem is in the duplexer? > > I have set up many repeater systems, and never had a problem like > this before. Any ideas? > > Thanks all. This group is a great resource for people like me that > want to get into repeater building. I would not be able to be where > I am without the help you all provide. > > Dave Cameron > VE7LTD >
[Repeater-Builder] Re: E-prom Reader-Writer for Phoenix
I agree Rick the kg4lne programmer is best. I bought the bare board and software 2 yrs ago and works 100%. All parts were cheap and available from Digi-Key. Great to have a solid program that works on XP and can save multiple configurations with comments in each memory channel...very handy. I see he is working on a 2212 emulator as well since the old EEproms are getting hard to find. 73, Ron VE1AIC --- In Repeater-Builder@yahoogroups.com, "Rick & Charlotte" <[EMAIL PROTECTED]> wrote: > > http://www.rtzaudio.com/kg4lne/ > > He makes a better programmer and WINDOWS software ! > > I looked at different programmers .. his is by the best IMO > > Rick > > On 12 Jan 2007 at 12:16, [EMAIL PROTECTED] wrote: > > > I use a programmer I bought from RFGUYS on Ebay. I have programmed > > Phoenix and Rangr radios with it so far. You have to remove the EEPROM > > from the radio and plug it into a small board plugged into the parallel > > port of a DOS computer, but it works like a charm. I have been > > programming EEPROMS with mine, and only require someone sending along > > the EEPROM and return postage to program one. Drop me a note if you are > > interested. > > > > 73 - Jim W5ZIT > > > > -Original Message- > > From: [EMAIL PROTECTED] > > To: Repeater-Builder@yahoogroups.com > > Sent: Fri, 12 Jan 2007 10:50 AM > > Subject: [Repeater-Builder] E-prom Reader-Writer for Phoenix > > > > Looking for an inexpensive way to program my Phoenix Radios. > > Yes Im Frugile. (better word than Cheap)Would be nice to find someone > > willing to part with the Suitcase Programmer, but they are Scarce & > > Expensive.Heres Hoping. > > > > Wesley AB8KD > > > > Check Out the new free AIM(R) Mail -- 2 GB of storage and > > industry-leading spam and email virus protection. > > > > > > Of all the intelligent animals, Human is the species that is least likely to learn > from its experience. > That explains why so manny of us have more then one Border Collie ! > > == www.karolinabc.ca == > > Rick,Charlote & Kids > Our Border Collies > Miss Daisy Duke > Sir Red-A-Lot > Miss Elly May > Mr Boots > Mr. Balue > Our Border Collie Message Group > [EMAIL PROTECTED] >
[Repeater-Builder] Re: IFR 1100S Service Monitor
Hi Scott, I've had my 1100S for over a year now and it works great. I have the 1000S service manual..no one seems to have a 1100s manual. What is your question? - Ron --- In Repeater-Builder@yahoogroups.com, "Scott Overstreet" <[EMAIL PROTECTED]> wrote: > > Anybody out there have an IFR 1100S service monitor in good working operationI have a problem with one that we just bought for use within our repeater group. I need to talk with somebody who has experience with this particular IFR model to find out just what I can expect of the spectrum analyser mode. > > And also, now that I realize the age of this unit, is there anybody out there that would like to sell me a junker for future parts? > > Please communicate off the [EMAIL PROTECTED] > > Thanks > > Scott, N6NXI >
[Repeater-Builder] Re: Western Radio Repeater Alignment
Hi Dave, as per my Email I've sent you the first set of scanned pages from the manual. More later. 73, Ron VE1AIC IRLP 2030 VE1CRA --- In Repeater-Builder@yahoogroups.com, "ve7ltd" <[EMAIL PROTECTED]> wrote: > > I have looked through the archives for as long as I can press "Search > More" before I go insane > > I have been tasked with recrystalizing a WR series 90 UHF repeater. > For those that dont know WR, they are the father of Glenayre > equipment. > > I am looking for a manual to tune these modules, but I cant find one > anywhere. The funny thing is WR used to be made in Vancouver BC, my > home town. There are a couple of WR repeaters on the air here, but > nobody seems to have the UHF module info. > > If the radios are similar to the WR 1454 mobiles for tuning, then I > may be okay, but I doubt they are. > > The modules ( I think ) are the 9R90 receiver and 9T90B4 transmitter. > > Does anybody use these things? I have heard talk of some people with > nice WR/Glenayre amplifers, does anyone have info on the modules? > > Now I know why I like MASTR II equipment :) > > David Cameron > IRLP System Designer > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: micor squlch gate card problem?? help please
Randy the sq gate mod usually takes COS from Q18 the transistor that does audio muting. (At front/middle of the card near JU10) Its a general purpose NPN M9642, you can pull one from an old card or probably try 2N3904 etc to get it going..not sure on the sub. You can check the operation of this transistor with a VOM on jumper J10. This should be around 12v sq'd and near 0v when unsquelched. You can also check to see if the card's squelch circuit is working by checking board pin 9 which should be about 8v sq'd and near 0v unsquelched. G.L. - Ron VE1AIC --- In Repeater-Builder@yahoogroups.com, "randy kisthardt" <[EMAIL PROTECTED]> wrote: > hello help please ive tried everthing > I got hit by lighting and it came in on phone line.it took out my > controller a acc rc-96.I had it hooked up via the squelch gate card > mod to a micor.(go in front of sq card for my signals with db 9 conn) > its now disconnected but im having problems with the squlch gate card > it self.it was working fine i cant find the problem with it and dont > have a spair to try. > > the repeater works fine as long as i have it in pl decode mode > when i put it in carrier mode (change jummpers in sq card) the > repeater will key up and pass audio ok but when carrier and tone > dissapers i still have audio (discrimater noise) untill the xmit hang > time goes away. its not bieing muted .allso i have local audio all > the time noise out the speake and cant squlch it out i can turn the > volume down but wont squlch out or mute out ever. but local works > fine with card out pl or not using disable sw on station controll > card everthing works right no noise from speaker unless i un squlch > it. i have meters and a scope just point me in the right direction > i tried to check the transistors on the card but they all look ok > with meter may be i missing a signal or somthing on the input to the > card? > thanks a lot > randy AG4ZQ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: OT TAPR President Emeritus Dr David Toth, VE3GYQ (SK)
Thanks for posting this. Dave was one of the great ones. Remember him from the early packet days as well as building a great computerized repeater system in London, ON. A sad loss for Amateur Radio. 73, Ron VE1AIC --- In Repeater-Builder@yahoogroups.com, "ka9qjg" wrote: > > > > FYI > > Our Thoughts and Prayers go out to all His Family and Friends > > 73 De Don KA9QJG > > http://www.arrl.org/news/stories/2010/03/01/11367/?nc=1 > > > > TAPR President Emeritus Dr David Toth, VE3GYQ (SK) > > >
