Originally signed on the air on May 23, 1948, a primary CBS affiliate on VHF channel 10, owned by the Philadelphia Evening Bulletin.
The network acquired the station in 1958 after the FCC granted the waiver as channel 10's signal overlapped its flagship station WCBS-TV in New York City.
This logo was adopted on September 10, 1973, and was similar to those of WALA-TV in Mobile–Pensacola, along with WTSP in Tampa–St. Petersburg, who would later adopt the design years long after this logo was adopted.
On July 12, 1994, when CBS and Westinghouse Broadcasting agreed to a long-term affiliation deal that would result in three of its stations switch to the network; they initially intended on selling channel 10, but later discovered they would have to pay taxes on the profit of the transaction. To solve this problem, in November 1994, NBC decided to swap ownership of KCNC-TV in Denver and KUTV in Salt Lake City (which NBC had acquired the month before), along with the VHF channel 4 allocation and transmitter in Miami, to CBS in exchange for WCAU and the VHF channel 6 allocation and transmitter in Miami, which for legal purposes made the deal an even trade. This logo was also used by former sister station (and still fellow NBC station) WJAR in Providence, Rhode Island.