Honestly....Id sugegest getting a better amp worthy of the 775. The 2100B
dates to the 70's and has many trouble areas best left to someone short of
cash but long on time and experience.
Carl
KM1H
----- Original Message -----
From: "Dr. G. Carl" <dtruss@4netparalegal.com>
To: <amps@contesting.com>
Sent: Sunday, January 08, 2012 9:52 AM
Subject: [Amps] FL 2100B OUTPUT PROBLEMS
>I recently purchased a FL2100B and initial setup and loading, the maximum
> plate current was 250ma.
>
> After tinkering with assorted levels of input from my exciter (775dsp) up
> to 100 watts, the AMP was
>
> able to draw less and less plate current and finally, little to none on
> any
> band. Loading and plate tuning had
>
> little effect on output as monitoring on external SWR cross needle Bridge.
>
> Pulled the tubes, they were PENTA LABS coded 9602, both. No physical
> indication of damage and filaments do
>
> Light.
>
> Any thoughts would be appreciated.
>
> Dr. G. Carl, W7BQ
>
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