[Milsurplus] Navy CXRU receiver? replaced by AN/WRR-2 (originally AN/SRR-15)?

[Nick England]

Anyone have info about the CXRU HF receiver? The AN/WRR-2 spec sheet
says it "is designed as a replacement for CXRU".
Commercial, Experimental, Receiver ?

Background - The AN/WRR-2 is the big two-section Wadley loop
synthesized receiver developed by National - the shore version was
AN/FRR-59

The AN/WRR-2 prototype was AN/SRR-15(XN-2) which evidently added SSB
to the first prototype AN/SRR-15(XN-1)

AN/SRR-15(XN-1) - 2-32mc, National; Contract NObsr-63391 (1953)
 "The AN/SRR-15 is a general purpose communication receiver for
shipboard use having extremely accurate tuning dial and frequency
control. A second version will have, in addition, circuits and
facilities for reception of single-sideband suppressed-carrier
signals."
 "Precision tuning with frequency accuracy determined by 100 kc
frequency standard and frequency synthesizer ."

Hah - anyone ever seen more info on AN/SRR-15 or photos of the two prototypes.

cheers,
Nick K4NYW
www.navy-radio.com