[Amps] Transceivers

[Will Matney]

Bill,
Thanks for this, I sent you another e-mail privately.

Best & 73's

Will Matney

Bill L. Fuqua wrote:

>It does seem strange to think of using a nonlinear divice to create in a linear fashion a signal on a different frequency. But if  the local oscillator signal  is strong enough to simply turn on and off the mixer tube it does become a very effective frequency mixer.  It then appears to be an analog mixer multiplying a signal with a square wave. 
>
>73
>Bill wa4lav
>PS. I can provide math to understand this better if you like.
>
>
>-----Original Message-----
>From: Will Matney <craxd1 at ezwv.com>
>To: "amps at contesting.com" <amps at contesting.com>
>Date: Sun, 05 Sep 2004 18:44:03 -0400
>Subject: [Amps] Transceivers
>
>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
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