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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>
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