[Repeater-Builder] VXR-7000V SERVICE MANUAL?
LOOKING FOR SERVICE MANUAL OF VXR-7000 VHF REPEATER. ANY HELP? MANY THANKS! Best regards SV1EDZ Dimitris Velissaris Technical Support RadioCommunications Dpt. ANCO S.A 44 Syngrou Ave 117 42 Athens - Greece Tel : +0302109209217 Fax : +302109209345 URL : www.anco.gr e-mail : [EMAIL PROTECTED] YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] C3I audio delay board
Thanks for the Info, sounds like I need to upgrade. Bruce KD4BOH - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, July 04, 2005 1:50 PM Subject: Re: [Repeater-Builder] C3I audio delay board Hi Bruce, I have a C3I audio connected to a Cat 300dx. As you increase the delay there a hiss that is heard. If you turn the delay off, the hiss is silent. Any Ideas? That audio delay module uses two cascaded Reticon RD5108 bucket-brigade audio delay chips. Bucket-brigade technology has been obsolete for many years,replaced by better schemes. The chips have apoor signal-to-noise ratio, and cascading them (for longerdelay) makes it worse. That's why you hear the hiss. You can't do much about it. Yourboard is a copy that C3I made of the original S-COM Audio Delay Module. Just as well;theS-COM Digital ADM that came later was a much better product. The design of the DADM is now owned by Integrated Control Systems, which also sells the DADM. 73, Bob Bob Schmid, WA9FBO, MemberS-COM, LLCPO Box 1546LaPorte CO 80535-1546970-416-6505 voice970-419-3222 faxwww.scomcontrollers.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] QRZ Database
Anyone have any ideas why the QRZ Database website has been offline the past couple of days??? Doug W7FDF Vail, Arizona YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] QRZ Database
Is online today. From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Doug W7FDF Sent: Tuesday, July 05, 2005 2:44 PM To: Repeater-Builder Subject: [Repeater-Builder] QRZ Database Anyone have any ideas why the QRZ Database website has been offline the past couple of days??? Doug W7FDF Vail, Arizona YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] QRZ Database
Are you talking the callsign lookup? I have been using it for the past several days with no problems, just used it a few minutes ago. Mathew Doug W7FDF [EMAIL PROTECTED] wrote: Anyone have any ideas why the QRZ Database website has been offline the past couple of days??? Doug W7FDF Vail, Arizona__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] QRZ Database
It has worked for me all this passed week end. - Original Message - From: Fred Fitte To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 05, 2005 2:53 PM Subject: RE: [Repeater-Builder] QRZ Database Is online today. From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com] On Behalf Of Doug W7FDFSent: Tuesday, July 05, 2005 2:44 PMTo: Repeater-BuilderSubject: [Repeater-Builder] QRZ Database Anyone have any ideas why the QRZ Database website has been offline the past couple of days??? Doug W7FDF Vail, Arizona No virus found in this incoming message.Checked by AVG Anti-Virus.Version: 7.0.323 / Virus Database: 267.8.9/39 - Release Date: 7/4/2005 YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: DB4060 duplxer
--- In Repeater-Builder@yahoogroups.com, Glen Briggs Aka KBØRPJ [EMAIL PROTECTED] wrote: can anyone help me find the tuning information for a DB4060 duplexer, i can't see, to find them anywhere on the net.. anyone got any ideas? --- This message has passed an anti-virus scan using the avast! anti-virus system, database: 0526-4, 07/01/2005 Follow this link for tuning. http://www.algerham.org/db4060tuninginst.pdf 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: DB4060 duplxer
--- In Repeater-Builder@yahoogroups.com, Glen Briggs Aka KBØRPJ [EMAIL PROTECTED] wrote: can anyone help me find the tuning information for a DB4060 duplexer, i can't see, to find them anywhere on the net.. anyone got any ideas? --- This message has passed an anti-virus scan using the avast! anti-virus system, database: 0526-4, 07/01/2005 try http://www.algerham.org/db4060tuninginst.pdf or try yahoo and search words (DB4060 tuning) 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: Motorola phone patch model L1159A
Hi Gang, did this thing ever get scanned if so where is it? Thanks AC0Y --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: If anyone has a IAI manual and wants to loan it out to be scanned, or can scan it themselves, repeater-builder will be happy to provide a place for the PDF. Mike WA6ILQ At 08:39 AM 5/17/05, you wrote: I have a L1158A patch, also made by IAI, and no info on it. It has two modular phone cords coming out of it as well as a cord marked radio. It was once hooked to a low-band Micor base station. There is also a wall-wart attached. If anyone comes up with any info I'd like to know as well. 73 and thanks, Al, K9SI Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Manuals for Aerotron
I have some transmitters with 110 watt PA's and power supplies (no receivers) used in analog paging back about then. Any ideas where a guy could find the schematics on those monsters, at least the transmitters? Paul WB5IDM -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of Kevin King Sent: Tuesday, July 05, 2005 6:52 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Manuals for Aerotron Charles, I worked with UHF Aerotron repeaters, They were just the same as the mobiles. All the same boards just in a base cabinet. What made it a repeater was a Ferotronics tone board. and some big heat sinks! I said all that to say you may only need a manual for a high power vhf mobile. Then use your favorite method to control a repeater. I will look I may still have some manuals. The vintage of equipment I speak is around 1983. Kevin King SCSA BSCIS ARS KC6OVD GMRS KAG0378 EIEIO 2722 Acworth Georgia -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of Charles Rice Sent: Sunday, July 03, 2005 12:30 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Manuals for Aerotron I'm in need of manuals for a hi-band Aerotron cabinet style base station, that I hope to make into a repeater. The Model numbers are: 60BT100transmitter 60BR1receiver 1093 power supply I've already tried the Aertron list. Willing to buy, beg, borrow, or pay copy costs. Help please! Charles Rice kd4ss [EMAIL PROTECTED] Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Repeater heard on Aviation Channel! HELP
Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. The did not give any other specifics other than this. This comes from Pilots whom reported the occurance with the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer's. My question is, could it be something in the antenna system, or where might I look. My system consist of a DB224 retuned for the ham bands, up 92' fed with 7/8 hardline. There is two horizontal antenna's below the repeater antenna, a cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There is no breaks in the 1/4 steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 Khz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggorie Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Mathew Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
At 08:48 PM 7/5/2005, Mathew Quaife wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. Ouch! BTDT, with a kenwood synthesized transmitter that didn't detect out of lock properly. I had to pull the plug till it was resolved. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer's. My question is, could it be something in the antenna system, or where might I look. What I did to fix this, was to first realign the synth so the PLL was in lock. Then I added a coax stub filter on the transmitter output, cut to be an odd 1/4 wave multiple at 121.1 (where my problem was) and an even number of 1/4 wavelenghts at 146.730, where our carrier should be. The stub got me 40dB of supression, and the retune got rid of it entirely, so even if it happens again, the stub assures that the tower will not be hearing from us. Ideally, tune the stub with an SA and tracking generator, so you can be sure the pass and stop are where they should be. I also made two spares when I made mine, and labeled it so some well meaning guy years in the future dosen't remove that useless hunk of coax. The planes hearing it more than the tower was also the case here, it just happens that they frequently overfly the repeater site. The transmitter is the Maggorie Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Crystal or synth transmitter? If xtal, does the problem show up on (your transmit freq - the crystal freq)? Could be hopping in and out of an overtone mode, maybe a failing crystal, or bad component in the osc itself. My experience with the local tower folks was very good. No heated tempers, and they even complimented us to the FCC about how quickly and well we resolved the problem. The funny thing was, this has always been an example I used in talks as a nightmare scenario of what could happen... Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
At 01:48 AM 7/6/2005 -, you wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. ---Either your repeater is AMing a lot, or isn't exactly on 132.950 (slope tuning an FM signal on an AM receiver). Did they provide callsigns? Ken -- President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html We offer complete Kenwood TKR repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
At 09:06 PM 7/5/2005, Ken Arck wrote: At 01:48 AM 7/6/2005 -, you wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. ---Either your repeater is AMing a lot, or isn't exactly on 132.950 (slope tuning an FM signal on an AM receiver). In our case, the audio was as clear on their systems as it is on ours. The FM deviation slides around on their IF passband slope, creating AM where none existed before. I had several people who were local gurus insisting that this couldn't be the case, so I played them the tapes from the tower. That's another thought I forgot to add. If you ask, they will probably be able to let you listen to the tapes, which makes the identification much easier. In our case, there were a few instances of just sylables, but then there were others where the repeater courtesy tone was there, as well as our most popular user, and then finally one with the repeater ID, which pretty much closed the case. Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
Yes, they was able to identify one user of the system, and that particular day they his audio was terrible, to the point I was trying to identify what was wrong with his audio. Ken Arck [EMAIL PROTECTED] wrote: At 01:48 AM 7/6/2005 -, you wrote:Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system.---Either your repeater is AMing a lot, or isn't exactly on 132.950 (slopetuning an FM signal on an AM receiver). Did they provide callsigns?Ken--President and CTO - Arcom CommunicationsMakers of state-of-the-art repeater controllers and accessories.http://www.ah6le.net/arcom/index.htmlWe offer complete Kenwood TKR repeater packages!AH6LE/R - IRLP Node 3000http://www.irlp.netYahoo! 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/ Sell on Yahoo! Auctions - No fees. Bid on great items. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
Mathew, The Maggiore EV-1 is a very basic, crystal-controlled exciter that has none of the filters, power control, or SWR protection features of commercial units. I have one that I took off the air because of its tendency to produce spurs. It is perhaps not a good idea to use a relatively unstable exciter to feed a 200 watt (!) power amplifier, which itself may not have all of the controls and protections of a commercial amplifier. I've never heard of Vocom, so I don't know where it falls in the quality lineup. I find it interesting that the fundamental frequency of your exciter, 12.1175 MHz, when mixed with your output frequency of 145.410 MHz, produces a product at 133.2925 MHz. This product is in the aviation band and could be slope-detected with ease by an AM aircraft radio on a nearby frequency. I'm not suggesting that this is the cause, but it's a coincidence. You might check to see that the box containing the exciter is tightly shielded and its power and audio leads are properly bypassed. Check to see that all connectors are clean and tight. Use a spectrum analyzer to see if your PA is generating spurs. Try running without the PA, or use a different and lower-powered PA for comparison. Another brute-force measure which might be helpful in troubleshooting this problem, is to put a bandpass cavity between the exciter and the PA, and a second bandpass cavity at the output of the PA. Finally, it may be helpful to install a ferrite isolator at the output of the PA. There may be intermod issues at work here, and an isolator will help to make that determination. 73, Eric Lemmon WB6FLY Mathew Quaife wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 MHz. At first they were able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. They did not give any other specifics other than this. This comes from Pilots who reported the occurrence to the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer. My question is, could it be something in the antenna system, or where might I look? My system consists of a DB224 retuned for the ham bands, up 92' fed with 7/8 hardline. There are two horizontal antennas below the repeater antenna, a Cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There are no breaks in the 1/4 steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 kHz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggiore Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Mathew Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
Is your repeater on 145.035? 73 Glenn WB4UIV At 09:48 PM 07/05/05, you wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. The did not give any other specifics other than this. This comes from Pilots whom reported the occurance with the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer's. My question is, could it be something in the antenna system, or where might I look. My system consist of a DB224 retuned for the ham bands, up 92' fed with 7/8 hardline. There is two horizontal antenna's below the repeater antenna, a cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There is no breaks in the 1/4 steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 Khz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggorie Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Mathew Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
Dave VanHorn [EMAIL PROTECTED] wrote: At 08:48 PM 7/5/2005, Mathew Quaife wrote:Ok, the situation is that my repeater is being heard by commercialaircraft on 132.950 Mhz.Ouch! BTDT, with a kenwood synthesized transmitter that didn't detect out of lock properly.I had to pull the plug till it was resolved. This is where I am at, I pulled the plug.I've looked at the transmitter on the SA, there is one small spurthere, but this same spur is there if I use just an ht, or any otherradio for that matter. This is hooking it to the repeater antennadirectly, or through the duplexer's. My question is, could it besomething in the antenna system, or where might I look.What I did to fix this, was to first realign the synth so the PLL was in lock.Then I added a coax stub filter on the transmitter output, cut to be an odd 1/4 wave multiple at 121.1 (where my problem was) and an even number of 1/4 wavelenghts at 146.730, where our carrier should be. The stub got me 40dB of supression, and the retune got rid of it entirely, so even if it happens again, the stub assures that the tower will not be hearing from us.Ideally, tune the stub with an SA and tracking generator, so you can be sure the pass and stop are where they should be.I also made two spares when I made mine, and labeled it so some well meaning guy years in the future dosen't remove "that useless hunk of coax".The planes hearing it more than the tower was also the case here, it just happens that they frequently overfly the repeater site. There is a wound of coax on the output of the exciter to reduce the power going into the amplifier, as the amp only needs 2 watts of draw to run it. The transmitter is the Maggorie Hi Pro EV1 andthe amplifier is a Vocom 200 watt amp. 90 Watts is what is being fedto the antenna from the duplexer.Crystal or synth transmitter? If xtal, does the problem show up on (your transmit freq - the crystal freq)?Could be hopping in and out of an overtone mode, maybe a failing crystal, or bad component in the osc itself. It is a xtal controlled unit, don't seem to be having any troubles on the output of the repeater at 145.410.My experience with the local tower folks was very good. No heated tempers, and they even complimented us to the FCC about how quickly and well we resolved the problem.The funny thing was, this has always been an example I used in talks as a "nightmare scenario" of what could happen...At this point I don't think they have contacted the FCC, at least I have not heard from them as of yet. The gentleman that I spoke to was very pleasant and very helpful. He himself has not heard the interference as it was only reported by the Pilots themselves.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/ Sell on Yahoo! Auctions - No fees. Bid on great items. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
Nope, it is on 145.410 Mathew Glenn Little WB4UIV [EMAIL PROTECTED] wrote: Is your repeater on 145.035?73GlennWB4UIVAt 09:48 PM 07/05/05, you wrote:Ok, the situation is that my repeater is being heard by commercialaircraft on 132.950 Mhz. At first they was able to identify one userof the system, this was in June. Then again the repeater was heard onJune 22, this time stating they could hear several users on the system.The did not give any other specifics other than this. This comes fromPilots whom reported the occurance with the FAA in Chicago. I'm toldthe interference is only to the planes, and not the ground tower.I've looked at the transmitter on the SA, there is one small spurthere, but this same spur is there if I use just an ht, or any otherradio for that matter. This is hooking it to the repeater antennadirectly, or through the duplexer's. My question is, could it besomething in the antenna system, or where might I look. My systemconsist of a DB224 retuned for the ham bands, up 92' fed with 7/8"hardline. There is two horizontal antenna's below the repeaterantenna, a cushcraft 5 element 6 meter beam and a Hygain TH7 belowthat. The tower is a guyed tower, with two sets of guys, one set at65' and the other at 35'. There is no breaks in the 1/4" steelcables. The deviation on the repeater into my SM only showed 4.5 to 5Khz wide, although the audio was tinny. Over the past few days I havebeen working on the tinny audio, for which I believe I have fixed, asit sounds much better. The transmitter is the Maggorie Hi Pro EV1 andthe amplifier is a Vocom 200 watt amp. 90 Watts is what is being fedto the antenna from the duplexer.MathewYahoo! Groups LinksYahoo! 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/ Sell on Yahoo! Auctions - No fees. Bid on great items. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
The Vocom amp is a commercial made amp, designed for repeater use, this particular model is no longer made, but the company still makes them, all new design and new staff. I think what my biggest concern is, that all of this did not crop up until after I installed the new DB224 antenna. I have another transmitter that I am able to use, have to order an xtal for it and see if does any better. Mathew Eric Lemmon [EMAIL PROTECTED] wrote: Mathew,The Maggiore EV-1 is a very basic, crystal-controlled exciter that has noneof the filters, power control, or SWR protection features of commercialunits. I have one that I took off the air because of its tendency toproduce spurs. It is perhaps not a good idea to use a relatively unstableexciter to feed a 200 watt (!) power amplifier, which itself may not haveall of the controls and protections of a commercial amplifier. I've neverheard of Vocom, so I don't know where it falls in the quality lineup.I find it interesting that the fundamental frequency of your exciter,12.1175 MHz, when mixed with your output frequency of 145.410 MHz, producesa product at 133.2925 MHz. This product is in the aviation band and couldbe slope-detected with ease by an AM aircraft radio on a nearby frequency.I'm not suggesting that this is the cause, but it's a coincidence.You might check to see that the box containing the exciter is tightlyshielded and its power and audio leads are properly bypassed. Check to seethat all connectors are clean and tight. Use a spectrum analyzer to see ifyour PA is generating spurs. Try running without the PA, or use adifferent and lower-powered PA for comparison.Another brute-force measure which might be helpful in troubleshooting thisproblem, is to put a bandpass cavity between the exciter and the PA, and asecond bandpass cavity at the output of the PA.Finally, it may be helpful to install a ferrite isolator at the output ofthe PA. There may be intermod issues at work here, and an isolator willhelp to make that determination.73, Eric Lemmon WB6FLYMathew Quaife wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 MHz. At first they were able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. They did not give any other specifics other than this. This comes from Pilots who reported the occurrence to the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer. My question is, could it be something in the antenna system, or where might I look? My system consists of a DB224 retuned for the ham bands, up 92' fed with 7/8" hardline. There are two horizontal antennas below the repeater antenna, a Cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There are no breaks in the 1/4" steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 kHz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggiore Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. MathewYahoo! 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/ Sell on Yahoo! Auctions - No fees. Bid on great items. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
There is a wound of coax on the output of the exciter to reduce the power going into the amplifier, as the amp only needs 2 watts of draw to run it. That dosen't help you here, the stub specifically attenuates the bad frequency, and passes the good one. Your repeater cans probably don't do much to the bad frequency either. It is a xtal controlled unit, don't seem to be having any troubles on the output of the repeater at 145.410. Ours gave no outward symptom on the normal frequency either. YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
At 10:17 PM 7/5/2005, Mathew Quaife wrote: The Vocom amp is a commercial made amp, designed for repeater use, this particular model is no longer made, but the company still makes them, all new design and new staff. I think what my biggest concern is, that all of this did not crop up until after I installed the new DB224 antenna. I have another transmitter that I am able to use, have to order an xtal for it and see if does any better. Hmm.. This makes me think of something with reflected power into the TX, but it may just be coincidence. In our case, the PLL was tuned after 24 hours of burn-in, to exactly factory spec, but within 6 months it had drifted far enough to be partially unlocking. Worse, the radio didn't detect the unlock, and kept transmitting with the VFO hopping between these two frequencies. I even tied the lock line manually, and the radio just kept right on transmitting! Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
What frequency is your repeater on? Joe M. Mathew Quaife wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. The did not give any other specifics other than this. This comes from Pilots whom reported the occurance with the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer's. My question is, could it be something in the antenna system, or where might I look. My system consist of a DB224 retuned for the ham bands, up 92' fed with 7/8 hardline. There is two horizontal antenna's below the repeater antenna, a cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There is no breaks in the 1/4 steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 Khz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggorie Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Mathew Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Repeater heard on Aviation Channel! HELP
Mathew Quaife wrote: I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. Mathew Mathew, you need to clarify your statement. Did you substitute your entire transmitter with a different one, or just the exciter...? Laryn K8TVZ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Repeater heard on Aviation Channel! HELP
Just the transmitter, I took the amp offline for the test. So with just five watts I seen the spurs on the SA. Mathew Laryn Lohman [EMAIL PROTECTED] wrote: Mathew Quaife wrote:I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. MathewMathew, you need to clarify your statement. Did you substitute yourentire transmitter with a different one, or just the exciter...?Laryn K8TVZYahoo! 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/__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
145.410 Mhz. Mathew mch [EMAIL PROTECTED] wrote: What frequency is your repeater on?Joe M.Mathew Quaife wrote: Ok, the situation is that my repeater is being heard by commercial aircraft on 132.950 Mhz. At first they was able to identify one user of the system, this was in June. Then again the repeater was heard on June 22, this time stating they could hear several users on the system. The did not give any other specifics other than this. This comes from Pilots whom reported the occurance with the FAA in Chicago. I'm told the interference is only to the planes, and not the ground tower. I've looked at the transmitter on the SA, there is one small spur there, but this same spur is there if I use just an ht, or any other radio for that matter. This is hooking it to the repeater antenna directly, or through the duplexer's. My question is, could it be something in the antenna system, or where might I look. My system consist of a DB224 retuned for the ham bands, up 92' fed with 7/8" hardline. There is two horizontal antenna's below the repeater antenna, a cushcraft 5 element 6 meter beam and a Hygain TH7 below that. The tower is a guyed tower, with two sets of guys, one set at 65' and the other at 35'. There is no breaks in the 1/4" steel cables. The deviation on the repeater into my SM only showed 4.5 to 5 Khz wide, although the audio was tinny. Over the past few days I have been working on the tinny audio, for which I believe I have fixed, as it sounds much better. The transmitter is the Maggorie Hi Pro EV1 and the amplifier is a Vocom 200 watt amp. 90 Watts is what is being fed to the antenna from the duplexer. Mathew Yahoo! Groups Links Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
I'm almost to the point of just scraping the iron and starting back at the basics. Actually I am almost ready to pull hairs. With so much time lapse in playing with this, I have forgotten most everything, so I really have to scratch my head. Might just have to find an elmer to come in and go through it. Mathew Dave VanHorn [EMAIL PROTECTED] wrote: There is a wound of coax on the output of the exciter to reduce the power going into the amplifier, as the amp only needs 2 watts of draw to run it. That dosen't help you here, the stub specifically attenuates the "bad" frequency, and passes the good one.Your repeater cans probably don't do much to the "bad" frequency either. It is a xtal controlled unit, don't seem to be having any troubles on the output of the repeater at 145.410. Ours gave no outward symptom on the normal frequency either.__Do You Yahoo!?Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP
At 11:56 PM 7/5/2005, Mathew Quaife wrote: I'm almost to the point of just scraping the iron and starting back at the basics. Actually I am almost ready to pull hairs. With so much time lapse in playing with this, I have forgotten most everything, so I really have to scratch my head. Might just have to find an elmer to come in and go through it. Where are you, exactly? I'm on critical path now, but in a day or so I may be wide open, have SA, can travel. 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/
