Wikipedia
WLNY-TV, channel 55, is an independent television station licensed to Riverhead, New York, United States serving the New York City market. The station is owned by CBS Corporation, and is one-half of a television duopoly with CBS' flagship station WCBS-TV (channel 2). The stations share studio facilities inside the CBS Broadcast Center in Midtown Manhattan, and WLNY maintains a secondary studio in Melville, New York, with its transmitter based in Ridge, New York.
WLNY's primary over-the-air signal serves most of Long Island, comprising Nassau and Suffolk counties, and is available widely on cable television in most of the New York City television market. It is known on-air as "TV 10/55" because it is located on cable channel 10 in most of the Tri-State area.