[Repeater-Builder] GE CUSTOM MVP Ant Relay
Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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] GE CUSTOM MVP Ant Relay
I've never seen an MVP T/R relay fail. They are sealed in a metal can. I'd sooner think that the interconnecting cable between the T/R relay and RX input may have become questionable. The connections are simple RCA plugs/jacks and may have become corroded over time. Could also be the RCA connector going to the I.F stage. Don't rule out a nearby transmitter desensing the MVP. Chuck WB2EDV - Original Message - From: Gran Clark [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, January 19, 2004 8:39 PM Subject: [Repeater-Builder] GE CUSTOM MVP Ant Relay Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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] GE CUSTOM MVP Ant Relay
Gran, The MASTR IIs had a sensitivity problem that was caused by plating differences between the tuning slugs and the casting. Small hairs would grow inside the deck. I believe the MVP had the same problem. GE sold some black goo that you put on the slugs to improve the continuity. I don't know if it would cause such a drastic sensitivity change, but you might want to rock the slugs to see if the receiver sensitivity jumps. As far as the relay is concerned, I have not worked on that many to know if it is a high failure item. John At 08:39 PM 1/19/04, you wrote: Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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/ 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] GE CUSTOM MVP Ant Relay
Chuck and others Thanks for the info. There is a possibility of desensing. There was a little garbling of the remaining weak signal that leads me to suspect this. The other symptom is historical. The Rx signal went bad for about three weeks continuously and then fixed itself. With your information I will discount the relay possibility for now and simply wait to see if the problem returns. Thanks again. Gran K6RIF At 17:50 1/19/2004, you wrote: I've never seen an MVP T/R relay fail. They are sealed in a metal can. I'd sooner think that the interconnecting cable between the T/R relay and RX input may have become questionable. The connections are simple RCA plugs/jacks and may have become corroded over time. Could also be the RCA connector going to the I.F stage. Don't rule out a nearby transmitter desensing the MVP. Chuck WB2EDV - Original Message - From: Gran Clark [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Monday, January 19, 2004 8:39 PM Subject: [Repeater-Builder] GE CUSTOM MVP Ant Relay Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.562 / Virus Database: 354 - Release Date: 1/16/2004 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 the Yahoo! Terms of Service.
RE: [Repeater-Builder] GE CUSTOM MVP Ant Relay
Copper coat also works well on the adjusters -Original Message- From: John Sichert [mailto:[EMAIL PROTECTED] Sent: January 19, 2004 18:15 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GE CUSTOM MVP Ant Relay Gran, The MASTR IIs had a sensitivity problem that was caused by plating differences between the tuning slugs and the casting. Small hairs would grow inside the deck. I believe the MVP had the same problem. GE sold some black goo that you put on the slugs to improve the continuity. I don't know if it would cause such a drastic sensitivity change, but you might want to rock the slugs to see if the receiver sensitivity jumps. As far as the relay is concerned, I have not worked on that many to know if it is a high failure item. John At 08:39 PM 1/19/04, you wrote: Hi Group The club has a CUSTOM MVP (UHF) used as a simplex link. It appears to be intermittent on RX. The sensitivity drops from full quieting to almost readable. We planed a trip (300mi RT) today but the RX fixed itself. We are using the antenna relay in this situation. How is the reliability of that relay? It is hermetically sealed? Is this a reed relay? Gran K6RIF 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/ 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/ 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/
