National AN/FRR-24 and AN/FRR-37 Receiver - Restoration

Please let me know if you have any parts or info on this system - thanks, Nick K4NYW
Main AN/FRR-24 page
1950's-60's Navy Radio Equipment - photos, links, specs, etc.

This project got started when I acquired a couple of modules at the Shelby hamfest in 2006 and was intrigued by their design. As usual, one thing led to another, and in February 2007 I obtained most of the modules for one FRR-24 receiver rack. In August 2007 I obtained two more complete FRR-37 receiver racks. And in 2008 I acquired several more FRR-24 receiver racks. Along the way, I also accumulated a couple of AN/FRR-59 receivers, some RTTY gear, etc. This is obviously a project in progress (and out of control!) - see here.

I am still looking for some missing FRR-24 modules, particularly two Rack 4 power supplies (PP-648 and PP-649), and two CV-127 FSK converters.

9/07 -Restoration begins - with helper	11/07 - The FRR-24 works for the first time! 12/07 - Operating position	12/07 Operating position TT-176/UG TTY Left Rack LS-530 speaker FRR-31 rcvr FRR-59 rcvr CV-89A RTTY conv. FRR-49 rcvr SB-3576/UG patch panel Right Rack FRR-24 rcvr (rack 1 only so far)	FRR-24 power and signal connections on rear
first modules mounted	additional modules mounted	BNC cables in rear - before attachment	BNC cables in rear - attached
8/08 REFURBISHING - Preparing 4 racks - cleaning/painting
before	after

racks 1, 2, & 3 ready for reassembly - rack 4 acquired later	cables for one rack	cables need a little cleaning too	lacing cables to side panel
one side panel done, only seven more to go!		OK. two down and six to go	more cabling photos for restoration
10/08 - acquired Rack #4 with almost all cables - still missing two CV-127's and two power supplies
CLICK HERE FOR MORE FRR-24 / FRR-37 photos