[Milsurplus] R-388/51J use

[WA5CAB at cs.com]

AN/GRC-26 came out in 1950 and used a pair of R-336/GRC-26 (modified 
BC-342's) and officially a T-213/GRC-26 (some entries in both the basic and the 
A-model TM's still show it as a BC-610-(*)).  The main difference between the 
basic model and the SCR-399-B was in the FSK equipment and the shelter and 
how and where components were mounted.

AN/GRC-38, which should have been AN/GRC-26?, came out in either late 1952 
or early 1953 and used a pair of R-274's.  And as Nick said, the GRC-26A...C 
used a pair of R-388's.  The differences between the three models were in 
the Teletype machines used, in the receiver cabinets, and in the AN/TRA-7 
letter models used.  And for whatever reason, the manuals went back to 
identifying the transmitter as a BC-610-(*).

In a message dated 05/26/2012 15:52:20 PM Central Daylight Time, 
navy.radio at gmail.com writes: 
> Well, the Signal Corps evidently acquired over 12,000 R-388's in a
> dozen contracts (most in 1950-54 contracts with some as late as 1962).
> It is common to see them with field changes and MWO markings. So it
> seems somebody must have been using them somewhere - maybe they gave
> them all to the Air Force?
> http://forum.valka.cz/attachments/3136/Rd_AN_GRC-26A__interi_r_-_2x_p_ij_ma
> __R-388_.JPG
> 
> The GRC-26A, -26B, and -26C models used R-388's (and BC-610) beginning
> in 1953. The D model used the R-390 (and T-368) with production
> beginning in 1961 according to this interesting page:
> http://www.rattrig.com/AN-GRC-26/26.htm
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480