My plan is to use the multiple receivers to drive a URA-17 in diversity mode for both Antenna and frequency diversity.




I started with the CU-168/FRR antenna coupler at the bottom it has 5 outputs for 5 receivers. I have x2 R-1051s (I am looking for one more) then a RF-551A Preselector and a URC-58 (RF-301). Currently everything is operational except for the bottom R-1051, it has bad Frequency Standard module and its been out of commission for some time (At least since the early 1990s)


CU-168/FRR
Manual NAVSHIPS 91697A from Navy-Radio.com


This particular unit has a tag from the 6950th MRG which makes it a very early model as according to the history I could find the unit was designated the 6950 Security Wing in 1963. It was MRG between 1956-1958 and completely disestablished in 1967. I was based at Chicksands Priory RAF station for the entire time.



I have the coupler hooked to a G5RV antenna in my back yard. I unfortunately live in an HOA so my antenna options are limited.


Here is the guts of the 1051 that needs work. The bad Frequency Standard module is the one in the upper left corner.