Does anyone have info about this HF diversity system?
The only catalog listing I find says CNA (National) 1949-40 obsolete.
Receiver
(0.54-30 mc)
was CNA-46142 which the Navy Type catalog says is similar to RAO.
The NT catalog also lists these units for RBE
CNA-50079 Diversity Combining Unit - combines output of three receivers
CME-50090 Single Preselector (rack-mounted RME DB-20)
CME-50091 Dual Preselector (two rack-mounted RME DB-20)
Fred Chesson lists a General Electric version
CG-46142 (General Electric) receiver
CG-49140 Loudspeaker
CG-50079 Diversity Combining Unit (500 wpm CW)
CG-50090 Single Preselector
CG-50091 Double Preselector