[BC] AM Plate Modulation Concept

[WFIFeng@aol.com]

In a message dated 02/23/2006 09:30:28 AM Eastern Standard Time, 
rfry at adams.net writes:

> Tubes: 12BY7 oscillator, 
>  12BY7 buffer and 6146 final. Speech amplifier 12AX7, 12AU7 is used as 
>  modulater. Panel control: switch selection of three different crystals 
>  (reached through access door at rear). Panel meter indicate final grid 
>  current or final plate current.

A 12AU7 modulator? I presume this rig used screen mod?

Willie...