[Milsurplus] TCS Audio

[W7QHO at aol.com]

In a message dated 7/3/06 12:44:08 PM, WA5CAB at cs.com writes:


> There's nothing unusual about low power transmitters of the era having no
> speech amplifier tube between the microphone transformer and the modulator
> tube(s).  More didn't than did.  Six more examples are BC-474, BC-654, 
> BC-1306 and
> all three of the Command Set modulators.
> 
All, 

Sure enough.   However, in the case of the grid modulated sets (654 and 1306, 
and add the GRC-9 to the list) a single, relatively high gain stage was 
sufficient to provide 100% and then some.

Dennis D. W7QHO
Glendale, CA