Completely irrelevant. The FM after a call is when it is also the
call of an AM station but I think legally the AM station does not put
the AM after. However, it was common practice before the FCC decided
that FM stations had to have independent programming from their AM
counterparts.
Note that ships had four letter calls, I think many calls were
duplicated as broadcast stations. At least at first ship stations were
the reverse of land stations as far as K and W, K being those with East
coast registration and W west coast. The very first commercial license
issued by the Department of Commerce was to KDKA in Pittsburgh. It got a
four letter K call because someone thought it was a ship. Westinghouse
got four of the first dozen or so calls issued. KDKA, KYA (originally in
Chicago but moved to Philadelphia), WBZ (Boston) and WJZ in New York,
now WABC but Westinghouse applied WJZ to their Baltimore TV station
after ABC changed the call. Musical chairs with calls.
All ancient history.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
WB6KBL
