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Re: [Amps] FL-21200B

To: Alek Petkovic <>
Subject: Re: [Amps] FL-21200B
From: Vic K2VCO <>
Date: Tue, 06 Dec 2005 08:24:50 -0800
List-post: <>
Alek Petkovic wrote:

> On close inspection of the ammeter, I noticed that the idling current was 
> wavering ever so slightly. I turned the loading cap to the right and the 
> idling current was definitely moving. Advancing the load cap further to the 
> right to 6 or 7 on the scale brought up a nice little purple arc between 
> the plates of the loading cap.

This sounds like a *real* VHF parasitic!  Does the amplifier have 
parasitic suppressors?  If so, check that the resistors aren't open or 
very high in value.

Vic, K2VCO
Fresno CA
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