Quote:
Originally Posted by Jeffhs
I cannot for the life of me see how the former's WXYT-1270 can operate 50kW during the day without interfering with Cleveland's WWMK-1260 (10kW day/5kW night); after all, the two stations are adjacent to each other on the dial. Unless there is a 5-kHz (+/-) guard band between adjacent AM frequencies, I cannot imagine these stations operating this way without one causing serious interference problems for the other in daytime, as both stations operate 50kW sunrise to sundown. 
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WXYT transmits using 9 tower directional array focusing most of its power to the north.
http://www.fcc.gov/fcc-bin/amq?list=0&facid=28627
Day plot:
http://www.fcc.gov/ftp/Bureaus/MB/Da...7235-78705.pdf
Night plot:
http://www.fcc.gov/ftp/Bureaus/MB/Da...7235-78706.pdf
Also, there is
no 750 mile limit set by the FCC for former clear channel stations. This radius is the "protected" zone, meaning that other stations may transmit on that frequency as long as their signal strength is within certain limits at the edge of the 750 mile protected zone. Many former 50KW Clear channel enjoy a considerable "bonus coverage" today, well above the 750 mile protected zone.
jr