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Total 6 documents matching your query.

1. [Amps] LK-500 ZB problem (score: 1): Author: mike stokes <mike9v@gmail.com>; Date: Wed, 28 May 2014 21:47:01 -0400; I bought a used Amp supply LK-500ZB. Met the ham on his way to Dayton so I wasn't able to check it out beforehand. So of course it has a problem. This amp has the QSK board with a qsk switch on the b; /archives//html/Amps/2014-05/msg00135.html (7,068 bytes)
2. Re: [Amps] LK-500 ZB problem (score: 1): Author: Vic Rosenthal K2VCO <k2vco.vic@gmail.com>; Date: Wed, 28 May 2014 19:09:44 -0700; Mike, I can't answer most of your questions, but in general the most likely cause of vacuum relay failure is hot-switching. This could be due to the design of the amplifier, or the transceiver used t; /archives//html/Amps/2014-05/msg00136.html (8,106 bytes)
3. Re: [Amps] LK-500 ZB problem (score: 1): Author: MU 4CX250B <4cx250b@miamioh.edu>; Date: Thu, 29 May 2014 00:33:25 -0400; Vic is correct that most vacuum relay problems result from hot switching. You can often repair vacuum relays whose contacts have been welded shut by holding a magnet against the body of the relay. Su; /archives//html/Amps/2014-05/msg00138.html (9,277 bytes)
4. Re: [Amps] LK-500 ZB problem (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 29 May 2014 10:35:19 -0400; I bought a used Amp supply LK-500ZB. Met the ham on his way to Dayton so I wasn't able to check it out beforehand. So of course it has a problem. This amp has the QSK board with a qsk switch on the b; /archives//html/Amps/2014-05/msg00139.html (10,347 bytes)
5. Re: [Amps] LK-500 ZB problem (score: 1): Author: mike stokes <mike9v@gmail.com>; Date: Thu, 29 May 2014 11:14:37 -0400; Thanks to everyone for their thoughts. Carl was right, as usual. Mine has 4 relays, 3 DIP and the vacuum. I mis spoke when I said 3. Mike KK9V -- Mike Stokes KK9V ____________________________________; /archives//html/Amps/2014-05/msg00141.html (10,832 bytes)
6. Re: [Amps] LK-500 ZB problem (score: 1): Author: N7KA@comcast.net; Date: Thu, 29 May 2014 15:48:16 +0000 (UTC); My LK-500NTB QSK board has 4ea AZB-1CH-12DE DIP and 1ea RJ1A relays. The LK-Series manual QSK schematic shows 3 DIP and 1 Vacuum. The manual parts lists show AROMAT D2SE relays, 3 ea on QSK bd, 1ea o; /archives//html/Amps/2014-05/msg00142.html (7,167 bytes)

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