[R-390] Ebay Auction

ToddRoberts2001 at aol.com ToddRoberts2001 at aol.com
Sat Nov 17 19:18:44 EST 2007


In a message dated 11/17/2007 2:50:33 PM Eastern Standard Time, 
w9ran at oneradio.net writes:
ToddRoberts2001 at aol.com wrote:
>  I was only commenting that it is not good practice to stack the 2 
> radios close together like that if someone got the idea it is OK to do 
> that from the picture.    
Well...it really *is* OK to do that.  The "bible" aka TM 11-856A 
describes installation of the R-390A/URR in the following cabinets:

Cabinet, lightweight, tabletop CY-917/URR
Cabinet, med. duty, floor mount CY-1119/U
Cabinet, mobile mount, CY-979/URR
Cabinet, mobile mount, CY-1216/U

The CY-1119/U cabinet is a 76" rack that is part of FRR-33, FRR-34, 
FRR-38, FRR-39, FRR-40, FRR-41 - each of which includes 2 or 3 R-390A 
receivers mounted in a similar fashion.   What does the "bible" say 
about how to do this?
 
 
Hi Bob,
 
If you look at a picture of an FRR-38 installation you will see the gov't 
used spacers between the R-390s both top and bottom. So apparently the gov't did 
*not* think it was *OK* to stack R-390s directly on top of each other or other 
equipment when mounted vertically in a rack.
 
73 Todd WD4NGG



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