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Total 6 documents matching your query.

1. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: w4foa@voy.net (Tony Martin); Date: Sat, 06 Feb 1999 15:59:56 -0500; I have just recently acquired an Amp Supply LK500-ZB which appears to be in excellent condition, HOWEVER there is a problem and to be honest I'm stumped. In brief, here is the scenario: 140ma idling; /archives//html/Amps/1999-02/msg00222.html (7,803 bytes)
2. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 6 Feb 1999 16:17:21 -0500; Normal Indicates the HV and bias ckt working OK. What is the input VSWR at that point? Waste of time I suspect. Trace the RF path all the way thru to the grids, sounds like an open. Are the input net; /archives//html/Amps/1999-02/msg00225.html (9,429 bytes)
3. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: royanjoy@ncn.net (Roy Koeppe); Date: Sun, 7 Feb 1999 08:52:05 -0600; Tony, This is unrelated to your stated problem, but FYI: BEWARE of the huge current surge in the amp's ant relay key line!! My ZB has a factory mod upgrade kit installed which lowers the surge on tha; /archives//html/Amps/1999-02/msg00238.html (9,174 bytes)
4. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: royanjoy@ncn.net (Roy Koeppe); Date: Mon, 8 Feb 1999 15:07:22 -0600; To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.co; /archives//html/Amps/1999-02/msg00246.html (9,755 bytes)
5. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: royanjoy@ncn.net (Roy Koeppe); Date: Wed, 10 Feb 1999 10:44:19 -0600; Tony, I don't have that info anymore. But put your VOM on say 5 amp scale, DC, and use it to pull up the amp's relays with. See if it kicks up violently at first, and then read the holding current. A; /archives//html/Amps/1999-02/msg00303.html (9,160 bytes)
6. [AMPS] LK500-ZB Amp Supply ...help (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Wed, 10 Feb 1999 15:27:09 -0500; I'm not familiar with this amp, but the problem on an SB-220 was solved very nicely with a 220-ohm 1/2 watt resistor in series with the relay control line. Alternatively, a transistor switch keyed by; /archives//html/Amps/1999-02/msg00305.html (7,956 bytes)

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