[Repeater-Builder] Help needed re contacting W. C. Cloniger K3OF
Repeater builder is trying to get permission to reprint an old article. Does anybody have an email address for W. C. Cloniger K3OF, last address in Gainesville, Georgia ?? Mike WA6ILQ
[Repeater-Builder] Does anybody have the ARRL QST CD for 1975 ??
If so, we'd like to add to the DB-4048 page http://www.repeater-builder.com/db/db-4048.html the PDF file for the Product Review article for the DB Products DB-4048 duplexer from the June issue. Mike WA6ILQ
[Repeater-Builder] Hamtronics COR 2 pin out??
I have an old COR2 that I have no docs for. Hamtronics doesn't have info either...anyone have one of these they may have the manual for? Thanks, Ben
[Repeater-Builder] Re: Suggestions where to post Resume?
Thanks very much to everyone that responded to my query, specially Mike that was kind enough to post a LOT of additional useful information. -Alex --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: Comments scattered in the text... At 08:25 AM 12/11/07, you wrote: Be wary of big sites like Monster.com and others. I have heard that some of them have had security breaches and 'loose' requirements allowing noncompanies to 'harvest' your info for identity theft purposes.. I understand from a headhunter friend of mine that there is nothing at any of the biggies (Dice, Monster, Career Builder) that would prevent an identity theft crook from registering as a company and gaining full access to o
[Repeater-Builder] MastrII Mobil repeater spur
One for the wonderfull experts here. I have been working to many nights this week to be able to think straight. Our MastrII converted mobil developed a spur problem last nite. Were on 145.43 and the spur was on 145.11. Very strong and subbing in a standy unit produced the same results. The only components used in both are the ICOMs and the stock tone card (used to encode tone only). The fix was to pull the reciever ICOM (144.83)killing the local rx. Guys what are your thoughts on this and the possible fix. Randy
Re: [Repeater-Builder] Does anybody have the ARRL QST CD for 1975 ??
Mike I have the file. Where can I send it? 73 Glenn WB4UIV At 05:20 AM 12/12/07, you wrote: If so, we'd like to add to the DB-4048 page http://www.repeater-builder.com/db/db-4048.html the PDF file for the Product Review article for the DB Products DB-4048 duplexer from the June issue. Mike WA6ILQ Yahoo! Groups Links
[Repeater-Builder] Re: GM300 - Repeater Link - Help!
That would be great if you could foward me domeinformation regarding the link repeater my email is [EMAIL PROTECTED] and [EMAIL PROTECTED] if you could foward it to both. Thanks! --- In Repeater-Builder@yahoogroups.com, sgreact47 [EMAIL PROTECTED] wrote: joshjaffa josh@ wrote: . I was given www.webimaging.com/echocomm/ to look at but that is now inactive. Sorry, that was my site, and it went away when the Server changed hands. Maybe I can send some info on my Repeater Module. My Repeater Modules are plug, program the radios and play, no adjustments to fool with.
RE: [Repeater-Builder] GE MastrII Auxiliary Receiver
What you are describing is typical when the audio PA is loaded badly or is self-oscillating, and drawing excessive current. You should be able to bypass the 12v to the audio PA on the regulator board as it only feeds the audio PA to the best of my recollection... It does indicate a problem if 2 IFAS boards do it, but in the bigger picture it is an unused circuit in a voter rx, so it may be easier to move on... If the caps are weak on the 12v, it could just be allowing the audio PA to be unstable as there is a feedback loop in the windings of the audio PA transformer and if power is unstable it could become an oscillation and be what you are seeing run off and blow the fuse The mod I described is on older IFAS boards and eventually became incorporated into new boards, swapping the component in the feedback winding of the transformer.. Off hand I think it was a cap to ground which was changed to a resistor to ground... and it stopped oscillation in the circuit... The LBI's are RB website, quick and dirty may be disable the 12v to the audio finals and it should draw a lot less current. It also seems to me one of the audio pa transistors was tab ( collector ) hot and maybe the hot tab mount insulators melted causing the 12 to short to ground of the heatsink... if you have a direct short, start there... but 2 IFAS boards doing same... is curious... ohming 12 v to ground on the IFAS side of the fuse would tell if you have a direct short or a current run-away or similar... Doug KD8B At 09:45 PM 12/11/2007, you wrote: Hi Eric, I went back to the site today and pulled the receiver chasis. I'm more of a SpectraTac person myself so bare with me. This receiver is a 19 inch rack mount voting MastrII receiver. The only number stamped on the rear of the chasis is 19D41754GG7. It has two optional boards installed, the CG decoder (dip switch version) and the status tone (1950hz) generator board. The 10v regulator board has a model number of 320918G1 REV B. There are two fuses on this board and I keep blowing fuse 801. (802 has never blown yet) Interesting enough, I looked inside of another identical (looking) receiver, and it's 10v regulator board only has one fuse on it. (but that receiver is fine so I ain't messin with it!) If I had to guess, I would say that the one fuse board is of older vintage than my 2 fuse board based on appearance only. (it just looks older, caps, etc.) With the receiver now on the bench I'm feeding it with 13.8 volts from my Astron VS12M. The ammeter goes up just over an amp and then fuse 801 blows. I removed the IFAS board from the chasis and the receiver now draws close to nothing, the 10v regulator measures 10.01, and no fuses blow. Put the IFAS board back in, fuse 801 blows again. SoI put in another IFAS board, and again my fuse 801 blows. Needless to say, I'm not sure what the problem is yet. I have no documentation so I can't help with LBI's. Not sure if I should replace the two caps on the 10v board (200uf at 18v and 400uf at 18v) because the 10 volts looks great when there is no IFAS board installed. SoI ponder my next move Adam N2ACF At 20:37 12/11/2007, you wrote: Adam, I am struggling to understand which receiver you have, so that I can understand where the fuse is in the circuit. I am fairly new to the GE radio scene, so I hope you will indulge me a little. It will help me, and perhaps a few others, if you identify exactly what model or combination radio receiver you have, and which LBI you are referring to. As one who submits scanned LBIs to the GE Master Index, I really want to know about any LBIs that are lacking, so that I can locate a needed hard copy and fill that void. Thanks! 73, Eric Lemmon WB6FLY -Original Message- From: mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Adam C. Feuer Sent: Tuesday, December 11, 2007 3:49 AM To: mailto:repeater-builder%40yahoogroups.comrepeater-builder@yahoogroups.com Subject: [Repeater-Builder] GE MastrII Auxiliary Receiver Hello All, Yesterday, I had to go up the mountain to the repeater site because I noticed that my GE voting receiver was not working. When I got there, I found that one of the fuses had blown. I believe it was fuse 801 and it had a 1amp glass fuse in it. Not being fully equipped to trouble shoot ( I actually left work due to curiosity to see what was wrong) I simply replaced the fuse and the receiver came back to life working perfectly. I checked it periodically on my way back to work and home for the night and it was working fine. I come to wake up this morning and the receiver is dead again. Before I attempt to sneak out of work today, has anyone seen this fuse blow multiple times in this 19inch rack mount receiver? This particular receiver is being fed with an external 12volt source (not a supply attached to the receiver) that feeds other 12volt
RE: [Repeater-Builder] GE MastrII Auxiliary Receiver
Doug, I'm going to try to remove the 12v tonight. Sitting here at work reading this I'm not 100 percent in understanding what needs to be done. So, I'll look at this email again tonight when I'm on the bench. Thanks!! Adam N2ACF At 12:47 PM 12/12/2007, you wrote: What you are describing is typical when the audio PA is loaded badly or is self-oscillating, and drawing excessive current. You should be able to bypass the 12v to the audio PA on the regulator board as it only feeds the audio PA to the best of my recollection... It does indicate a problem if 2 IFAS boards do it, but in the bigger picture it is an unused circuit in a voter rx, so it may be easier to move on... If the caps are weak on the 12v, it could just be allowing the audio PA to be unstable as there is a feedback loop in the windings of the audio PA transformer and if power is unstable it could become an oscillation and be what you are seeing run off and blow the fuse The mod I described is on older IFAS boards and eventually became incorporated into new boards, swapping the component in the feedback winding of the transformer.. Off hand I think it was a cap to ground which was changed to a resistor to ground... and it stopped oscillation in the circuit... The LBI's are RB website, quick and dirty may be disable the 12v to the audio finals and it should draw a lot less current. It also seems to me one of the audio pa transistors was tab ( collector ) hot and maybe the hot tab mount insulators melted causing the 12 to short to ground of the heatsink... if you have a direct short, start there... but 2 IFAS boards doing same... is curious... ohming 12 v to ground on the IFAS side of the fuse would tell if you have a direct short or a current run-away or similar... Doug KD8B At 09:45 PM 12/11/2007, you wrote: Hi Eric, I went back to the site today and pulled the receiver chasis. I'm more of a SpectraTac person myself so bare with me. This receiver is a 19 inch rack mount voting MastrII receiver. The only number stamped on the rear of the chasis is 19D41754GG7. It has two optional boards installed, the CG decoder (dip switch version) and the status tone (1950hz) generator board. The 10v regulator board has a model number of 320918G1 REV B. There are two fuses on this board and I keep blowing fuse 801. (802 has never blown yet) Interesting enough, I looked inside of another identical (looking) receiver, and it's 10v regulator board only has one fuse on it. (but that receiver is fine so I ain't messin with it!) If I had to guess, I would say that the one fuse board is of older vintage than my 2 fuse board based on appearance only. (it just looks older, caps, etc.) With the receiver now on the bench I'm feeding it with 13.8 volts from my Astron VS12M. The ammeter goes up just over an amp and then fuse 801 blows. I removed the IFAS board from the chasis and the receiver now draws close to nothing, the 10v regulator measures 10.01, and no fuses blow. Put the IFAS board back in, fuse 801 blows again. SoI put in another IFAS board, and again my fuse 801 blows. Needless to say, I'm not sure what the problem is yet. I have no documentation so I can't help with LBI's. Not sure if I should replace the two caps on the 10v board (200uf at 18v and 400uf at 18v) because the 10 volts looks great when there is no IFAS board installed. SoI ponder my next move Adam N2ACF At 20:37 12/11/2007, you wrote: Adam, I am struggling to understand which receiver you have, so that I can understand where the fuse is in the circuit. I am fairly new to the GE radio scene, so I hope you will indulge me a little. It will help me, and perhaps a few others, if you identify exactly what model or combination radio receiver you have, and which LBI you are referring to. As one who submits scanned LBIs to the GE Master Index, I really want to know about any LBIs that are lacking, so that I can locate a needed hard copy and fill that void. Thanks! 73, Eric Lemmon WB6FLY -Original Message- From: mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Adam C. Feuer Sent: Tuesday, December 11, 2007 3:49 AM To: mailto:repeater-builder%40yahoogroups.comrepeater-builder@yahoogroups.com Subject: [Repeater-Builder] GE MastrII Auxiliary Receiver Hello All, Yesterday, I had to go up the mountain to the repeater site because I noticed that my GE voting receiver was not working. When I got there, I found that one of the fuses had blown. I believe it was fuse 801 and it had a 1amp glass fuse in it. Not being fully equipped to trouble shoot ( I actually left work due to curiosity to see what was wrong) I simply replaced the fuse and the receiver came back to life working perfectly. I checked it periodically on my way back to work and home for the night and it was working fine.
[Repeater-Builder] Micor conversion question
My question is on the Jim Reese uhf Micor conversion. I'm having trouble finding the 27pf.39pf, and 12pf caps locally. Can I substitute 22,33,10 in their place? Craig
[Repeater-Builder] Vertex UHF repeater system FS
I have a very nice UHF system for sale: Vertex VXR-7000 50 watt synthesized continuous duty repeater, Telewave TRDD-4544 Duplexer (BpBr) Additional panel with a motorola BP cavity and Micor preamp All mounted in a very nice GE MASTR III cabinet, with a rack shelf for the repeater. Cabinet has a N bulkhead connector on to, as well as an AC powered cabinet exhaust fan. Can be programmed and tuned to your freq (440-470 Mhz) I really don't want to ship this stuff, but I am willing to deliver within 300 miles or so of Auburn, CA. $1,500 cash. Call 916.873.6730 Dave Fortenberry NA6DF
Re: [Repeater-Builder] Re: Micor conversion question
You can use the caps you have, the reason for them is to lower the resonant frequency of the coils, a small change in value will only move the location of the core slightly. Not a problem. - Original Message - From: fxbuilder To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 12, 2007 5:04 PM Subject: [Repeater-Builder] Re: Micor conversion question Thanks, forgot about Mouser. Craig --- In Repeater-Builder@yahoogroups.com, George Henry [EMAIL PROTECTED] wrote: Mouser has no minimum order $$ requirement (some parts have minimum quantities, but hardly unreasonable)... and I usually receive my orders from them within 2 days. George, KA3HSW / WQGJ413 -Original Message- From: fxbuilder [EMAIL PROTECTED] Sent: Dec 12, 2007 2:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor conversion question My question is on the Jim Reese uhf Micor conversion. I'm having trouble finding the 27pf.39pf, and 12pf caps locally. Can I substitute 22,33,10 in their place? Craig
[Repeater-Builder] 800/900 MHz Supplier in Dallas Area
http://www.dbspectra.com/ A recent acquaintance of mine told me about this company, located in the Dallas area. I have never heard of them, but supposedly many of these people worked at Decibel Products. Maybe some of the parts they are building are old Decibel Products designs. Wonder if they have the drawings for the old dB224JJ 4 pole? Roger W5RD 224.18/223.82 927.1125 Dallas, Texas
[Repeater-Builder] Re: Micor conversion question
Thanks for the info. I found 39pf, and the 12pf, but the 27pf is illusive. I do have 33pf and 15pf. I'll assume I can try one as the replacement for the 27pf or can I put a 15 and a 12 in series?. Appreciate the help. Craig --- In Repeater-Builder@yahoogroups.com, Captainlance [EMAIL PROTECTED] wrote: You can use the caps you have, the reason for them is to lower the resonant frequency of the coils, a small change in value will only move the location of the core slightly. Not a problem. - Original Message - From: fxbuilder To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 12, 2007 5:04 PM Subject: [Repeater-Builder] Re: Micor conversion question Thanks, forgot about Mouser. Craig --- In Repeater-Builder@yahoogroups.com, George Henry ka3hsw@ wrote: Mouser has no minimum order $$ requirement (some parts have minimum quantities, but hardly unreasonable)... and I usually receive my orders from them within 2 days. George, KA3HSW / WQGJ413 -Original Message- From: fxbuilder fxbuilder@ Sent: Dec 12, 2007 2:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor conversion question My question is on the Jim Reese uhf Micor conversion. I'm having trouble finding the 27pf.39pf, and 12pf caps locally. Can I substitute 22,33,10 in their place? Craig
Re: [Repeater-Builder] Does anybody have the ARRL QST CD for 1975 ??
donations //at// repeater-builder //dot// gov (but replace gov with com) (suitably encoded so that the average automated address sniffer doesn't grok it, plus they avoid .gov addresses) Thanks!! Mike At 06:25 AM 12/12/07, you wrote: Mike I have the file. Where can I send it? 73 Glenn WB4UIV At 05:20 AM 12/12/07, you wrote: If so, we'd like to add to the DB-4048 page http://www.repeater-builder.com/db/db-4048.html the PDF file for the Product Review article for the DB Products DB-4048 duplexer from the June issue. Mike WA6ILQ Yahoo! Groups Links Yahoo! Groups Links
Re: [Repeater-Builder] Re: Micor conversion question
15 pf and 12 pf in series would give you 6.7 pf, but if you have the space you could put them in parallel and have 27 pf. I'm sure that's what you meant to say. No guarantees on the specific item you're working with but usually putting a couple of caps in parallel to arrive at a needed value works just fine. I'd try that if it were me. Paul fxbuilder wrote: Thanks for the info. I found 39pf, and the 12pf, but the 27pf is illusive. I do have 33pf and 15pf. I'll assume I can try one as the replacement for the 27pf or can I put a 15 and a 12 in series?. Appreciate the help. Craig
[Repeater-Builder] Discriminator audio
Thanks to all who replied to my questions about using discriminator audio on the Hamtronics R-100. It was a big help. Merry Christmas and Happy New Year to all. Mick
Re: [Repeater-Builder] Re: Micor conversion question
Paralleled caps add, as do series resistors, so parallel the two and go for it. However the average Moto cap was +/- 20% so is you have clearance problems I'd try the 33pf and see what happens. I'll bet it works just fine. Mike WA6ILQ At 05:23 PM 12/12/07, you wrote: Thanks for the info. I found 39pf, and the 12pf, but the 27pf is illusive. I do have 33pf and 15pf. I'll assume I can try one as the replacement for the 27pf or can I put a 15 and a 12 in series?. Appreciate the help. Craig --- In Repeater-Builder@yahoogroups.com, Captainlance [EMAIL PROTECTED] wrote: You can use the caps you have, the reason for them is to lower the resonant frequency of the coils, a small change in value will only move the location of the core slightly. Not a problem. - Original Message - From: fxbuilder To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 12, 2007 5:04 PM Subject: [Repeater-Builder] Re: Micor conversion question Thanks, forgot about Mouser. Craig --- In Repeater-Builder@yahoogroups.com, George Henry ka3hsw@ wrote: Mouser has no minimum order $$ requirement (some parts have minimum quantities, but hardly unreasonable)... and I usually receive my orders from them within 2 days. George, KA3HSW / WQGJ413 -Original Message- From: fxbuilder fxbuilder@ Sent: Dec 12, 2007 2:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Micor conversion question My question is on the Jim Reese uhf Micor conversion. I'm having trouble finding the 27pf.39pf, and 12pf caps locally. Can I substitute 22,33,10 in their place? Craig Yahoo! Groups Links
Re: [Repeater-Builder] MastrII Mobil repeater spur
At 12/12/2007 06:06, you wrote: One for the wonderfull experts here. I have been working to many nights this week to be able to think straight. Our MastrII converted mobil developed a spur problem last nite. Were on 145.43 and the spur was on 145.11. Very strong and subbing in a standy unit produced the same results. The only components used in both are the ICOMs and the stock tone card (used to encode tone only). The fix was to pull the reciever ICOM (144.83)killing the local rx. Guys what are your thoughts on this and the possible fix. I've had this happen with both the VHF UHF Mastr II mobiles (though not strong, more like anywhere from -50 to -80 dBc), which is why I now consider that particular GE mobile unit unsuitable for repeater use unless the RX or exciter is removed separately packaged. AFAIK the Exec II MVPs don't have this problem, possibly because the TX exciter RX LO chain aren't sitting side-by-side. I've tried bypassing the 10 V supply adding shielding to the exciter area to try to prevent coupling between the RX LO chain exciter, but have had no success. Bob NO6B
Re: [Repeater-Builder] MastrII Mobil repeater spur
Randy, I'm trying to recall...is this a rig where one ICOM has the temperature compensation network, and develops a control voltage which is then distributed and shared by all the other ICOMs in the radio? If so, and the problem just showed up one day, perhaps there's some RF bypass cap or other component that's failed within the ICOM itself, allowing RF to travel that DC temperature control line. It's been 10 years since my last MII mobile conversion, so the memories are somewhat dusty, but I'd try another ICOM to see. 73, Paul, AE4KR - Original Message - From: wb8art To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 12, 2007 6:06 AM Subject: [Repeater-Builder] MastrII Mobil repeater spur One for the wonderfull experts here. I have been working to many nights this week to be able to think straight. Our MastrII converted mobil developed a spur problem last nite. Were on 145.43 and the spur was on 145.11. Very strong and subbing in a standy unit produced the same results. The only components used in both are the ICOMs and the stock tone card (used to encode tone only). The fix was to pull the reciever ICOM (144.83)killing the local rx. Guys what are your thoughts on this and the possible fix. Randy
[Repeater-Builder] simple repeater
I have access to IC 28h mobiles and intend to make a repeater out of two mobiles. ...not for heavy use...but casual ...club use...5-10 watts tx. will be sufficient ...will be powered by solar ...not too sure whether to use duplexer or two antenna ...to make it portable to readily move to another location and access (program directly by dial) other repeaters. any idea from this group...whether this radio is reliable for this application.? thanks chris - Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
[Repeater-Builder] power supply / battery system for repeater site
Hello Everyone, I am wondering what repeater operators commonly use when a 12v power supply as well as a battery charging and switching system is needed at a repeater site. My repeater has an internal 120v power transformer that feeds a 12v regulator box, and also has a battery circuit on the back of the repeater that will allow it to draw from batteries when the main power is lost. It supplies a very low current trickle to keep the batteries charged up, however if the batteries drain due to extended power outage it does not provide any sort of reasonable facility to charge them back up again. The manufacturer recommends to take the batteries off, charge them externally, and then return them to float charge... however that's not very feasible if the repeater is located on a mountain or some other location that's not easily accessible on short notice. I'm thinking of just ditching the internal power supply and building a more robust off-board power supply and battery charging system that can switch onto the batteries and charge them up again when the main power returns. For use at home I like the PWRGate units which maintain the batteries nicely but I am wondering if others have used those at repeater sites with no trouble? Thanks anybody who has information to provide. This group is a wonderful resource for all things repeater-related. Yours, Mark Hagler W7WMH Seattle
