[Milsurplus] Need Info On RT-70B/GRC

[WA5CAB@cs.com]

Mike,

RT-70B came in with Change 2 dated 4 April 1958 to the TM 11-290 you have.  
Appears that there was only the one Order, as Changes 3 and 4 don't mention any 
later ones.

It says that RT-70B is identical to RT-70A except that resistors have higher 
max temp rating, some capacitors have lower positive tolerance temperature 
coefficient and some caps have decreased value tolerances.

The only other thing mentioned is to change C-14 to C-41 on Fig. 47.

I can email you a .TIF.  It's only one page front and back.

In a message dated 7/11/2003 4:01:39 PM Central Daylight Time, 
mamorrow@tva.gov writes: 
> While we are on the subject of RT-70(*)/GRC units, does anyone have a 
> manual or schematic for sale of the "B" model (RT-70B/GRC) of this unit?  I have a 
> 1957 manual for the RT-70 and RT-70A, but nothing for the RT-70B.  The only 
> B model I've seen has a 1957 contract date on the tag, so it must have been 
> one of the very last units made (1958?) in the AN/GRC-3 to -7 and AN/VRC-7 to 
> -18 series of radios.

Robert Downs - Houston
<http://stores.andale.com/wa5cab>
<wa5cab@cs.com>


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