Complex sentence: In 1966, the station was airing a MOR music format and was co-owned with WKDN (800 AM), which changed calls to WTMR after the two stations were sold to separate owners in 1968.
Split into simpler sentences: In 1966, the station was airing a MOR music format. The station was co-owned with WKDN (800 AM), which changed calls to WTMR after the two stations were sold to separate owners in 1968.