In a message dated 7/23/2007 12:25:52 P.M. Eastern Daylight Time,
stevek@jmr.com writes:
But methinks that Ep is on the low side. I don't have an L-7, but could
swear the L-4B Ep was more like 2.7 kV key-down...might be related to line
voltage and which transformer tap you're using.
-WB2WIK/6
In many instances the HV metering resistors change value in time and the HV
readings are not that accurate. I always use an outboard meter to test HV on
amps, which verifies the correct voltage I have and also checks to see if the
HV meter is reading accurate. If the meter reads wrong compared to the
outboard meter, changing the metering resistors are in order. SOME amps have
a
compensation pot that can vary the reading against a "known" meter, but
sometimes, if the metering resistors have badly changed value even then it is
hard adjust the meter for the right reading. Lou
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