[Collins] 30S-1 HV Supply

[Dr. Gerald N. Johnson, electrical engineer]

What line voltage are you running? Are the wires from your service panel
to the shack big enough for the current? There could be a lot of voltage
drop from running on 120 volts.

And as JAMES T BRANNIGAN says, have you compared the plate voltage
metering to a known good meter? Those metering resistors could have
drifted from heat, humidity, age, and high voltage.

73, Jerry, K0CQ
-- 
Entire content copyright Dr. Gerald N. Johnson. Reproduction by
permission only.