Toroids and mica compression trimmers are the way to go in 2010. Mount them
on a board with relay control and put them where they can be safely tuned.
Carl
KM1H
----- Original Message -----
From: "Gino" <gino@camporese.net>
To: <amps@contesting.com>
Sent: Friday, March 26, 2010 6:45 AM
Subject: [Amps] Amplifier 2x3-500Z
>I need some information for amp 2 x 3-500z input circuit. I see many
>circuit but National XR-50 in no available.
>
> can you help me?
>
> many thanks
>
> IK3HZI Gino
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