-----Original Message-----
From: Roy Koeppe <royanjoy@ncn.net>
To: amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
Date: Sunday, February 07, 1999 8:52 AM
Subject: Re: [AMPS] LK500-ZB Amp Supply ...help
>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 that keyline to a much
>lesser amount. But it's still way too high for the OMNI-6 to pull up the
>relay. I do it an outboard way.
>
>GUD LUK OM,
>
>K6XK
>
>
>-----Original Message-----
>From: Tony Martin <w4foa@voy.net>
>To: amps@contesting.com <amps@contesting.com>
To: <amps@contesting.com>
>Date: Saturday, February 06, 1999 3:00 PM
>Subject: [AMPS] LK500-ZB Amp Supply ...help
>
>
>>
>>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 current
>>0 grid current (with or without drive)
>>3200volts B+ (drops to 3100 when relay activates)
>>50 watts of drive from OMNI 6 is 0 watts when relay engages in amp.
>>Plate current does not change with or without drive (when relay
>>actuated)
>>Same cabling when hooked to my AL80B amp, works like a champ.
>>The LK500ZB is non QSK .. same for the AL80B
>>Zener diode replaced.
>>Plate current does not change with drive applied from OMNI 6.
>>Welcome any and all suggestions....
>>I KNOW THE ANSWER IS OUT THERE 8-)
>>I apologize in advance if it is something stupid!!!!!!!!!
>>Tony, W4FOA
>>w4foa@voy.net
>>
>>--
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>>Problems: owner-amps@contesting.com
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>>
>
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