[Amps] Transceivers

[Will Matney]

This is a little off topic but its for research ultimately in 
amplifiers. How many older receivers or transceivers, preferably tube 
type had the mixer circuits grid driven by the oscillators? I know some 
did along with military receivers. What I'm needing is the manufacturers 
and models of some that did. This is research into IMD in the 
transceiver thus being transmitted to the amp, and or other signals 
coming into the grid on grid driven triodes, tetrodes and pentodes in PA 
circuits. If you can recall any models, please let me know. One good 
example of a transceiver was the Henry Tempo One. I have some older 
military receiver manuals here which did this. Most Drakes either mixed 
the signals using the cathode or using a pentagrid converter. The ones 
needed added both the incoming signal and the oscillator signal to the 
control grid of the mixer tube.

Will Matney