[Milsurplus] AM-864/U

[COURYHOUSE at aol.com]

yes we are looking  for  the am 447  to go  with  our  grc 27    yea   
tower gear!
Ed#
 
 
In a message dated 5/16/2013 12:15:59 P.M. Mountain Standard Time,  
whitaker at pa.net writes:

de  WB2CPN
It was a general purpose line amplifier for audio circuits.
They  were designed to be used in broadcast work, I think.
My experience was in  USAF navigational aid facilities,
and we used a few.  But I could be  wrong.
Trivia:  The AN/FRC-19 Control Tower of those days used
the  AM-447 on the audio lines to the remote  sites.
Clete
++++++++++++++++++++++++++++++++++++++++

On  5/15/2013 2:22 PM, telegrapher at q.com wrote:
> Does that number ring a  bell?  AM-864/U.  Its some sort of line amp in a 
19 inch rack.   600 ohm in and out with a attenuator pot on each side of 
the input line.   Pair of 6SK7's for each side of the input line and a single 
6SN7 driving the  output transformer.  There is also a 6SQ7 Constant output 
control.   A meter can be switched between the output of the 6SK7's and then 
the other  way to read the output of the actual output transformer.  Last 
person to  work on it wrote a 1963 service date under the chassis.  Like to 
know  more about this thing and where it might have been used.
>
>  Larry
> W0OGH
>
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