[AMPS] Re:ultimate amp

[Peter Chadwick]

>Why not switch in fixed values of C in place of a plate tuning 
>cap and use a roller inductor for the "plate tune".
>Come to think of it, Henry radio did that a decade or two ago.
>73, Bob, W5AH


RCA did it in a thing called an ET4336 - about 1940.  

73

Peter G3RZP


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