
News operationĬBS affiliate WGAN-TV/WGME-TV was dominant in local Nielsen ratings for many years. After the transition, the station continued its digital broadcasts on channel 44. The station often promoted this additional way of coverage. This was true of all other analog channel 6 stations in the United States. As a result, it could be picked up on the lower end of the dial on most FM radios at 87.7 MHz. Until that date, the station's analog audio signal transmitted on a frequency of 87.75 MHz (+10 kHz shift). On June 12, 2009, WCSH ceased normal programming on analog VHF channel 6 and began providing a " nightlight" service. WCSH's digital signal on UHF channel 44 signed on in 2002, bringing high definition network television to the area. Since 2000, WLBZ has for all intents and purposes been a semi-satellite of WCSH as early as 1989, WLBZ had been reducing its personnel and consolidating some internal operations with WCSH. In 1998, the Maine Broadcasting System (by this time controlled by the Rines-Thompson family) sold WCSH and WLBZ to current owner Gannett. In the mid-1990s, WCSH added a website providing 24-hour news and weather coverage outside newscasts. The radio stations were sold off in 1981 in 1997, the -TV suffix was dropped. In 1977, WCSH-TV moved to new facilities across the street from the hotel at One Congress Square, where it remains today. At various points, the Maine Broadcasting System also included WRDO radio in Augusta and KMEG in Sioux City, Iowa, with WCSH-AM-TV as its flagship. Although the two television stations were now sister stations, they remained completely separate entities.

In 1958, the Rines family acquired WTWO in Bangor from Murray Carpenter, and renamed it WLBZ-TV (after WLBZ radio, now WZON, which the family had owned since 1944). It has always been an NBC affiliate, although during the late-1950s, the station was also briefly associated with the NTA Film Network. The station was owned by the Rines family through their Maine Broadcasting System the family had built the hotel in 1896, and established WCSH radio (970 AM, now WZAN) on the top floor in 1925. WCSH-TV signed on Decemfrom studios at the Congress Square Hotel in downtown Portland. The stations have produced an eight minute newscast that is looped every 10 minutes and is updated throughout the day. On WCSH-DT2 as well as Comcast and Time Warner Cable digital channel 166 is a 24-hour local news and weather channel. With their combined resources, the stations provide statewide coverage not offered by any other outlet in Maine. Although WCSH and WLBZ are based in different locations and technically serve separate markets, the two essentially operate as one station. WLBZ also airs separate station identifications and commercials. Syndicated programming exclusive to this station includes Cash Cab.

There are also programs that only air on WLBZ while some are only seen on WCSH. It simulcasts most of WCSH's newscasts and clears most of its syndicated programming (though in some cases at different times). For all intents and purposes, WLBZ is a semi-satellite of WCSH. WCSH is the sister station to Maine's other NBC affiliate, WLBZ in Bangor. Syndicated programming on WCSH includes: Who Wants to Be a Millionaire, The Doctors, Anderson and Inside Edition. Owned by Gannett, WCSH has studios at Congress Square in Downtown Portland. There is a high definition signal offered on Comcast digital channel 504 and Time Warner Cable digital channel 506. The station can also be seen on Time Warner Cable channel 6, and Comcast channel 96. Licensed to Portland, it broadcasts a high definition digital signal on UHF channel 44 ( PSIP virtual channel 6) from a transmitter on Winn Mountain in Sebago.

WCSH is the NBC-affiliated television station for Southern Maine and Northern New Hampshire.
