I know that Hallicrafters made a dual diversity set up and RCA used
three AR-88s in a trioka, selecting the best signal with a tone decoder
that switched in the best and let the other/s idle or squelched. I've
heard that Collins used the R 390 (51J or 51S?) , and Hammarlund the
Super Pros ( only 600s or others?). It seems like three antennas spaced
about 1000 feet apart on an equilateral triangle was a 100% solution.
Did the Brits use it a Bletchley? But I don't see anything these days
and have to wonder if diversity reception was made obsolete by SSB or
the news & financial services using wire for TTY. I also know that
Telstar was the final nail. Was the primary use for RTTY or was it used
to voice well as CW? Anyone have some real personal experience to
offer?
Thanks
Hank WD5JFR