Originally WCOJ's studios were located at the Palace Theater in downtown Coatesville, and later (in the early '50s) opened an auxiliary studio/business office above Woody Pontiac-Cadillac Inc at 809 E. Lincoln Highway. Over the years the station has also had studios at the transmitter site in West Brandywine Township, at 3721 East Lincoln Highway, Thorndale and at 17 West Gay Street, West Chester. The Seltzer and Halpern partnership which founded WCOJ also branched into cable television in late 1967, forming "Cable TV of Chester County". Over the next five years CATV of Chester County engineered and installed community CATV systems in Coatesville, Downingtown, and West Chester, and expanded into nearby municipalities as funds allowed.