Danfm said:If 1050 WEPN wanted to become WHN they could not get them back. WJKW-TV in Cleveland was able to find a loophole to reclaim WJW-TV in 1985 Same goes for 930 KKHJ in Los Angeles which was able to reclaim KHJ in 2000
Interestingly enough, Storer was behind both WMGM's call letters change back to WHN after a 15 year absence, and WJKW-TV/8's reclamation of the WJW calls.
WJW-TV/8 became WJKW in 1977 after Storer sold off WJW/850 to then-Cleveland Browns owners Art Modell and Al Lerner, but kept the TV station. A condition of that sale was, the next time the AM station would be sold, Storer would reclaim the WJW calls, and the AM station would need to change calls.
That happened in June of 1985 when Lerner & Modell sold WJW-AM to buy WWWE/1100, sold WJW-AM over to Booth Broadcasting (who had to change the calls to WRMR), and Storer rechristened WJKW as WJW-TV/8. When the Fox Television Stations Group bought WJW-TV in 1997, the "-TV" suffix was dropped completely.
As for KKHJ, because it was a Spanish-language station, they successfully petitioned the FCC to revert back to KHJ, with their reasoning being that speaking out the "K - K" letters in Spanish sounded like a vulgar term for fecal matter, so the TOH IDs had to be given in English. That worked in the eyes of the FCC.
WGH/1310 in Newport News, Virginia, also restored their three-letter callsign not once, but two times: first, in 1985 after two years as WNSY (WGH-FM was also WNSY-FM), and in 2003 after a year as WCMS (WGH-FM was unaffected that time).