WCAU
NBC-owned television station serving Philadelphia and the Delaware Valley.
Last updated August 31, 2026
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Overview
WCAU is a television station broadcasting on channel 10 in Philadelphia, Pennsylvania, and serving the wider Delaware Valley. It is owned and operated by NBCUniversal through NBC Owned Television Stations and functions as the Philadelphia market’s NBC network outlet. The station’s local identity is closely associated with NBC Philadelphia and its news, weather, traffic, public-affairs, entertainment, and community programming. WCAU also carries NBC network programs and selected sports and special-event coverage, subject to local scheduling and preemption decisions. The station began broadcasting in 1948 as WCAU-TV. Its origins were connected to the Philadelphia Evening Bulletin, which obtained a construction permit for channel 10 and later adopted the WCAU call letters after acquiring related radio properties. Because the WCAU radio stations had a longstanding relationship with CBS, the new television station became one of CBS’s early Philadelphia affiliates. For most of its first several decades, WCAU was a CBS station and developed a substantial local-news and sports presence. Its early facilities were in Center City before operations moved in 1952 to a purpose-built television center in Bala Cynwyd, on the Main Line outside Philadelphia. The station’s transmission reach expanded significantly in 1957 when it moved from an earlier Center City tower to a taller facility in Philadelphia’s Roxborough section. That change strengthened coverage across the enlarged Philadelphia television market, including portions of Delaware, South Jersey, the Jersey Shore, and the Lehigh Valley. Regulatory decisions concerning signal overlap and ownership also contributed to the eventual sale of the WCAU properties by the Bulletin to CBS in 1958. WCAU changed network affiliations during the large-scale realignment of U.S. television affiliations in the 1990s. In 1994, CBS agreed to affiliate with Westinghouse-owned KYW-TV, Philadelphia’s longtime NBC affiliate. After negotiations involving CBS, NBC, and Group W, NBC obtained WCAU through a broader station and ownership transaction. The affiliation switch was delayed by tax and structural issues and ultimately took effect in September 1995. WCAU thereby became an NBC-owned station, while KYW-TV became the Philadelphia CBS outlet. NBC’s acquisition also fulfilled its long-standing objective of owning a station in Philadelphia, one of the largest U.S. markets where the network had previously lacked an owned-and-operated outlet. Comcast’s acquisition of control of NBCUniversal in 2011 reinforced WCAU’s connection to a Philadelphia-based media group. Comcast acquired a majority interest in NBCUniversal in January 2011 and purchased the remaining interest in 2013. NBCUniversal later acquired Telemundo affiliate WWSI, creating a local television duopoly with WCAU. The two stations share facilities, resources, and some operational functions while maintaining distinct English- and Spanish-language services. WCAU and WWSI moved their principal on-air operations to the Comcast Technology Center in Center City in October 2018. Some technical, vehicle, and support operations continued at the former Bala Cynwyd facility. The station also participates in Comcast and NBCUniversal’s regional sports and event ecosystem, including coverage and carriage of Philadelphia sports and major local civic events. In 2016, WCAU and WWSI became the local broadcast outlets for Wawa Welcome America’s Independence Day programming, replacing WPVI-TV’s previous local broadcast role. WCAU remains an active NBC-owned station focused on Philadelphia-area local news, network programming, community engagement, and event coverage.
History
WCAU traces its origins to a Philadelphia television construction permit associated with the Philadelphia Evening Bulletin. The proposed station was initially linked to the WPEN call letters, but the Bulletin’s acquisition of rights and related radio assets associated with WCAU led to the adoption of the WCAU-TV identity. The station transmitted an initial test pattern on March 1, 1948, carried a CBS program preview shortly afterward, and formally opened on May 23, 1948. The WCAU radio properties’ historic relationship with CBS helped secure the television station’s affiliation with the network. WCAU-TV became one of CBS’s early Philadelphia affiliates and remained with CBS for nearly half a century. In 1952, the station and its radio sisters moved from their original Center City location to a purpose-built broadcast facility in Bala Cynwyd. The facility was designed principally for television production and became a significant part of the station’s identity and operations. As the FCC expanded the boundaries of the Philadelphia market in the 1950s, WCAU-TV needed stronger regional coverage. In 1957, transmission operations moved to a 1,200-foot tower in Roxborough. The improved signal reached more of Delaware, South Jersey, the Jersey Shore, and the Lehigh Valley. Ownership complications involving the Bulletin’s interest in another Pennsylvania television station contributed to the sale of the WCAU stations to CBS in 1958, after the FCC addressed overlapping signals and ownership concerns. The station’s most consequential institutional change came from the 1994 affiliation realignment. CBS reached an agreement with Westinghouse Broadcasting that would make KYW-TV, then Philadelphia’s NBC affiliate, a CBS station. NBC sought WCAU because Philadelphia was one of the largest U.S. markets without an NBC-owned station. Negotiations involving CBS, NBC, and Group W produced a broader exchange of stations and ownership interests. The final transition was delayed by tax considerations but took effect on September 10, 1995. WCAU ended its CBS affiliation and became an NBC-owned station; KYW-TV became the CBS outlet. Comcast’s acquisition of NBCUniversal brought the station under majority ownership of a Philadelphia-based media company in 2011, followed by full Comcast ownership in 2013. NBCUniversal expanded its local presence by acquiring Telemundo station WWSI in 2013. WCAU and WWSI subsequently operated as a duopoly, sharing facilities while serving different language audiences. In 2018, WCAU and WWSI shifted their main on-air operations from Bala Cynwyd to the Comcast Technology Center in Center City Philadelphia. The move symbolized the station’s integration into Comcast’s wider media and technology complex, although selected technical and field-support activities continued at the older site. WCAU continues to operate as NBC Philadelphia, combining network programming with local journalism, weather, traffic, sports, civic-event coverage, and community-oriented programming.
- 2018
Operations move to Comcast Technology Center
[1]The stations complete their principal on-air move to the new Center City facility.
- 2016
Wawa Welcome America coverage begins
[1]WCAU and WWSI begin local broadcasts of Philadelphia’s Independence Day celebrations.
- 2013
WWSI joins NBCUniversal
[1]NBCUniversal acquires Telemundo affiliate WWSI, forming a Philadelphia television duopoly with WCAU.
- 2011
Comcast gains control of NBCUniversal
[1]Comcast acquires majority control of NBCUniversal, bringing WCAU under effective Philadelphia-based ownership.
- 1995
Switch from CBS to NBC
[1]WCAU becomes an NBC-owned station as part of the Philadelphia affiliation realignment.
- 1958
CBS acquires WCAU stations
[1]CBS takes control of the WCAU television and radio properties after regulatory and ownership negotiations.
- 1957
Roxborough transmission expansion
[1]WCAU-TV moves to a taller Roxborough tower to improve coverage of the expanded Philadelphia market.
- 1952
Move to Bala Cynwyd television center
[1]WCAU-AM-FM-TV move into a purpose-built broadcast facility on Monument Road and City Avenue.
- 1948
WCAU-TV begins broadcasting
[1]The station launches on Philadelphia channel 10 and becomes a CBS affiliate.
Products and positioning
NBC-owned, full-service local television station serving Philadelphia and the Delaware Valley, with a strong emphasis on local news, weather, traffic, sports, civic events, and network programming.
local news · 1948
NBC Philadelphia local news
WCAU’s core local-news service covers Philadelphia and surrounding Delaware Valley communities through scheduled newscasts, breaking-news reporting, investigative work, weather, traffic, consumer information, and digital publishing under the NBC Philadelphia identity.
network television · 1995
NBC network programming
As an NBC owned-and-operated station, WCAU distributes NBC’s national entertainment, news, sports, and special-event programming to viewers in the Philadelphia market, while managing local scheduling and occasional event-related preemptions.
sports broadcasting
Philadelphia sports coverage
WCAU carries selected Philadelphia professional-sports programming and network sports coverage. Its relationship with Comcast and NBC Sports Philadelphia also connects the station to the region’s broader sports-media operation.
special events · 2016
Wawa Welcome America broadcasts
WCAU and sister station WWSI provide local television coverage of Philadelphia’s Independence Day celebrations, including the concert and fireworks components of Wawa Welcome America.
Marketing campaigns
- 2016Wawa Welcome America
Philadelphia metropolitan area
Comcast became presenting sponsor of Philadelphia’s July 4 festivities, and WCAU and WWSI assumed local broadcast duties for the concert and fireworks programming.
Outcome. The stations replaced WPVI-TV as the local television broadcasters of the event and continued to integrate the celebration into their local special-event schedule.
Brand decisions
2013
Acquisition of WWSIM&ABackground
NBCUniversal sought a Spanish-language owned-and-operated outlet in the Philadelphia market alongside WCAU.
Action taken
NBCUniversal acquired Telemundo affiliate WWSI from ZGS Communications.
Aftermath
WCAU and WWSI became commonly owned stations with shared facilities and complementary English- and Spanish-language services.
purchase price. $20 million (2013)
1995
Change from CBS affiliation to NBC ownershipStrategyBackground
CBS’s agreement with Westinghouse required a major Philadelphia affiliation change, while NBC sought an owned station in the market.
Action taken
A multi-party station and ownership transaction transferred WCAU to NBC and moved KYW-TV to CBS.
Aftermath
WCAU became Philadelphia’s NBC-owned station and has retained that role since the September 1995 transition.
Recent events
KYW Newsradio and NBC10/Telemundo62 announce content-sharing partnership[3]
Reported:
KYW Newsradio and NBC10/Telemundo62 formed a partnership involving content sharing across sister stations, websites, and social media channels. KYW Newsradio switched from CBS3's weather team to NBC10's First Alert weather team.
Sources3 sources
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