Once
upon a time I asked Lloyd Alcorn up at Wacom that question.
Best
I recall 60 ft is the maximum distance on a tower that you can seperate
antennas.
Further seperation will not yield additional isolation because of the
coupling within the tower itself.
Number wise memory tells me that the isolation at 146 Mhz and 60 ft. was
around 60 db - just enough maybe with a clean tube transmitter and very
selective receiver to get by, and maybe not. Horizontal seperation was not
nearly as effective.
Seems
like 85 db of isolation was the magic number at 600 kc.
Regards,
Steve
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