Hi Carl: I have one of the 2100B amps. The only thing unusual about it is
that the LV internal PS for the rig is positive grounded so it can be used
for negative bias on the tube. The same PS is used for the internal T/R
relay so the rear chassis connection, which must be switched to gnd to
transmit, has negative voltage on it instead of positive. If you use an
external relay to do the switching, no problem, but if you use a transistor
switch to gnd you need to take the polarity into consideration.
73, Dan, N5AR
----- Original Message -----
From: carl seyersdahl <carlseye@tampabay.rr.com>
To: <Amps@contesting.com>
Sent: Sunday, August 03, 2003 7:29 AM
Subject: [Amps] FL2100B
> A friend of mine just got this amp , and he says it needs tubes. I seem to
> remember that there was a problem with one of these amps, but don't
remember
> which model. I tried to get into the BAMA site , with no luck, and can't
> find any other info. Any help out there??? reply direct if you'd like .
> Thanks.
> carl / kz5ca
>
>
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