[Milsurplus] PP-79/U power supply for BC-221

[WA5CAB at cs.com]

Mark,

The power supply is neither homebrew nor commercial.  It is a somewhat 
modified RA-133 missing the bottom plate.  Modifications, aside from throwing away 
the bottom cover, are chopped off power cord (which has a switch box mounted 
in-line with ON/OFF and STANDBY/OPERATE switches, indicator lamp, etc.).

TM 11-624 covers Radio Set AN/MRC-2-(*), a RATT/CW transmitter set using a 
BC-610-E as the exciter.  

PP-79/U performs the same function as RA-133 but construction is totally 
different.  It is shaped so as to replace the aluminum battery cage used only in 
BC-221-B and BC-221-Q.  RA-133 was built for all other BC-221 models as well as 
the later TS-17x models..

In a message dated 6/8/2005 3:02:15 PM Central Daylight Time, 
w1eof at hamnutz.com writes: 
> 
> I just purchased a BC-221Q freq meter. In the battery compartment is a power
> supply that looks too "meaty" to be homebrew. You can see pictures of it
> here:
> www.hamnutz.com/w1eof/bc221q
> 
> Raph Hartwell W5JGV Sent me the information below. Does anyone have docs
> and/or pictures of one? I don't see any nomenclature on the power supply I
> have.
> 
> 73,
> 
> Mark W1EOF
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~
> Power Supply, PP-79/U
> JAN Type: PP-79/U
> Nomenclature: Power Supply
> Reference: TM 11-624
> Weight: 25
> Power Input: 110 VAC 60 Hz
> Part of: MRC-2
> 
> Description: The PP-79 rectifier power unit provides power for the
> BC-221-AK frequency meter. It mounts inside the battery compartment
> of the frequency meter.
> 
> Source: TM 11-624, 18 Dec 53

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
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