[Boatanchors] BC-639 Military Receiver

[WA5CAB at cs.com]

Joe,

That modification is covered in T.O. 16-40BC639-22 dated 30 April 1948.  
Receivers so modified became BC-639-AM or BC-639-BM.  Copy of the T.O. $5.00 
shipped CONUS.  Includes extra copy of modified schematic to glue into cover.

In a message dated 1/23/2006 7:18:38 PM Central Standard Time, w5jdy at cox.net 
writes: 
> Hello again,from w5jdy in Okla.   I have completed restoration (all caps 
> and
> realignment) of an old BC-639 Military AM Receiver.   It tunes from 100mc to
> 155mc  It is working quite well with about 1 microvolt sensitivity but there
> is a lot of noise Not in the radio but with the antenna connected.  I saw a
> BC-639 Radio many years ago that had a 6H6 noise limiter built in it. It was
> under the chassis,it was original and came from the military that way. I
> would like to find a schematic of that model radio. I will build a noise
> limiter in the one I have. Kind of stupid aint it?. The one I saw was
> exactly the same as the BC-639 I have and had the schematic with the noise
> limiter in the cover.  Just re-inventing the wheel in Okla. Joe
> w5jdy at cox.net      Thanks for your time.

Robert Downs - Houston
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