[Amps] Tuning amplifiers

[Carl]

With GG triodes, tetrodes, or pentodes, the grid current is the most 
sensitive tuning indicator.

For grid driven tetrodes or pentodes the screen is the most sensitive tuning 
indicator as well as the most easily damaged by mistuning.

Carl
KM1H


----- Original Message ----- 
From: "Ron Youvan" <ka4inm at tampabay.rr.com>
To: "amps" <amps at contesting.com>
Sent: Saturday, January 30, 2010 2:59 PM
Subject: [Amps] Tuning amplifiers


> Anyone:
>
>   I am confused by some of the things I am reading here about tuning,
> but I have long heard triodes and tetrodes are tuned differently,
> I have never figured out why or what, could someone enlighten us and I
> assume pentodes are tuned like tetrodes, right?
> (I have been tuning tube amplifiers for over 40 years now, normally
> with a swept test signal, frequently with -20 dB of drive.)
> -- 
>    Ron  KA4INM - He who attacks the fundamentals of the American 
> broadcasting industry
>                  attacks democracy itself.        -- William S. Paley, 
> chairman of CBS
>
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