WCAU

==1948–1955==
WCAU-TV (owned by Philadelphia Evening Bulletin) went on the air March 1, 1948, as Philadelphia's third television station with an initial test pattern on Channel 10. It carried its first CBS network show on a "sneak preview" basis on March 3, but the official opening of the station wasn't until May 23, 1948. It secured an affiliation with CBS through the influence of the Levy brothers, who continued to work for the newspaper as consultants. 
A year later, the Levy brothers persuaded their brother-in-law, William S. Paley, to buy the struggling network. The Levy brothers were shareholders and directors at CBS for many years. Due to this long relationship, channel 10 signed on as CBS's third television affiliate.
==1955–1958==
In 1957, the Bulletin formed a limited partnership with the Megargee family, owner of CBS affiliate WGBI-TV (channel 22) in Scranton. As part of the deal, channel 22's call letters were changed to WDAU-TV (WDAU's call letters were changed again to WYOU in 1986). Soon afterward, the FCC ruled that the Bulletin could not keep both stations due to a large signal overlap in the Lehigh Valley. It opted to keep its stake in WDAU-TV and sell the WCAU stations to CBS. 
CBS had to seek a waiver to buy the WCAU stations, as the signals of WCAU's AM and television stations overlapped with those of WCBS radio and WCBS-TV in New York City (in the case of the AM outlets, both were clear-channel stations; the FCC at the time usually did not allow common ownership of clear-channel stations with overlapping nighttime coverage areas). However, in its application for a waiver, CBS cited NBC's then-ownership of WRCV-TV in Philadelphia (channel 3, now KYW-TV) and WRCA-TV in New York City (now WNBC). The FCC readily granted the waiver, and CBS took control in 1958.
==1958–1965==
==1965–1970==
==1970–1973==
==1973–1995==
===1973–1992===
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.
===1991–1995===
==1995–2012==
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. WCAU-TV became Philadelphia's new NBC station on September 10, 1995, replacing KYW-TV in that capacity; with the change came a new logo for the station.
==2012–present==
===2012–2018===
===2018–present===
The "NBC" lettering was omitted from the logo.
==External links==
Category:Television stations in the United States
Category:NBC network affiliates
Category:NBCUniversal
Category:Philadelphia
Category:Pennsylvania
Category:Former CBS network affiliates
Category:Westinghouse Broadcasting
Category:General Electric
Category:Comcast
Category:Former CBS owned and operated stations
Category:NBC owned and operated stations
Category:1948
Category:Television channels and stations established in 1948
Category:Television stations involved in the 1994–1996 United States broadcast TV realignment
Category:Comcast NBCUniversal
Category:New Jersey
Category:Delaware
Category:Paramount Global
Category:United States