WBUX was '70's months before WMGK. While MGK was more of a '70's classic hits station, WBUX played pop, disco, rock, and even the 'bubblegum' '70's hits. A memorable moment was the fantacy concert at Applebachsville, a theatre of the mind concert weekend that actually had some back roads in upper Bucks congested with people looking for the concert! I would guess the format idea started with a tie-in to the 1570 frequency.
WBUX changed formats to a sort of alternative pop after WMGK went all '70's. As the original post said, they went off the air for a time over a local dispute over building a higher tower, tried all news, talk, and finally was sold and became WISP.
WBUX had a history of format changes from 1948 to the end. In the '60's they block programmed country and pop music, ran Carl McIntire's 20th Century Reformation Hour" live in morning drive. They went all country in the spring of 1967 but were also pushed out of that format when WRCP in Philadelphia went country that September. In the '70's they were top 40, standards/big bands/dixieland jazz and AC.
Some notable staff were Bob Hamilton who went on to Philadelphia, L.A. & Miami as a major name jock,
Jerry Masters, who became Lee Masters at WRCP and filled the morning slot at WNBC in the '70's when Don Imus was exiled to Cleveland, became a major country programmer & later president of E! network, and Joan Stack, mother of actor/commedian Tim Stack. Rockin' Ron Cade was there before going to WRCP, later to WOGL. And longtime WOR newsman John Wyngate 'retired' from New York to WBUX. Brad Segal of WOGL was the news director during their all news attempt, then he returned to WOGL.
Needless to say, this was once my favorite station as a kid.