Went to the Pastrick Archives (aka, the radio junk in the basement) and pulled out the 1976 Broadcasting Yearbook
. There's WRUN-FM @ 104.3 with 100 kw Horizontal and 33 kw vertical.
If I have this right, back in the day FCC rules and licenses addressed FM radiation in the horizontal plane (much like early television) and treated radiation in the vertical plane as an option. It wasn't uncommon to find FM stations that radiated only horizontally. So WRUN-FM would have been a 100 kw FM, much like WSYR-FM (WYYY) and WBEN-FM (WTSS) in Buffalo.
Some of the early FM antennas, aside from the tuned cavity pylons used by the Rural Radio Network FM stations (read Scot Fybush's outstanding history here
) employed radiators (bays) which were horizontal only. The elements (bays) looked like a flat "C".
Some of the early FM pioneers that wanted to reach listeners in cars (a novel idea in the mid 60s) or get their signals into hand-held "12 transistor" radios (owned by hipsters and radio geeks like me) employed antennas that had separate vertical elements (bays) which look like a "T" flipped 45 degrees to the right, along with their mandatory horizontal radiating elements (the flat "C.")
In the mid to late 60s, FM stations upgraded their antennas and began using circular polarized antennas (antennae?) which combined horizontal and vertical elements (a flat "C" and a sideways "T") or a looked like a helical loop.
The sign-on's and sign-off's of these early FM stations, regardless of the format, always fascinated me as a listener. My first paying job in radio was doing weekends at a Buffalo FM and I got to read the "official" sign off. "WBNY Buffalo operates on an assigned frequency of 96 point 1 megahertz
with 50 thousand watts horizontal radiation and 50 thousand watts vertical radiation, as authorized by the Federal Communications Commission in Washington, D.C."
It should be noted that 50 kw horizontal and 50 kw vertical did not equal 100 kw and all that techno-speak-chest-thumping wasn't really necessary, it's just what stations did at the time. All that was required at sign-on and sign-off was the legal ID. Carrier on + WRUN-FM Utica at sign on and WRUN-FM Utica, carrier off at sign off.
Followed by SHHHHHHHH, aka, Pink Noise (which might make a cool name for an Active Rock Jock.)