[Amps] Tuning tetrode amps

[John Lyles]

Here is a link to Burle Industries app note TP122, on screen current and 
tetrode amplifiers.

http://www.burle.com/moretube.htm

> 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


Absolutely true!

You can still tune and try and find the plate current dip, but setting 
the loading correctly requires keeping an eye on that screen current. It 
will peak quite distinctively.

73
John
K5PRO