History of the National Football League on television
NBC was the first major television network to cover an NFL game, when on October 22, 1939, it broadcast a game between the Philadelphia Eagles and the Brooklyn Dodgers; the network was still only in its infancy, with only two affiliates, the modern day WRGB (now a CBS affiliate) in Schenectady and W2XBS in New York City. Portions of that game still survive via films, but the film is not footage from the telecast (recordings of television broadcasts did not begin until 1948). The use of a sideline camera, the sole camera used in the 1939 broadcast, would become the standard for all future NFL broadcasts until 2017; the angle is particularly suited for estimating yardage, compared to more mobile camera angles that began to appear in the 21st century.
WCAU
Philadelphia Eagles games primarily aired on Channel 10 back when it was a CBS station and that network carried the National Football Conference. That arrangement lasted until 1994, when Fox acquired the NFC contract and with it, the Eagles games to WTXF. After being traded to NBC, only select games where the Eagles hosted an American Football Conference opponent would air on WCAU from 1995 to 1997, when CBS regained the NFL. Since 2006, Eagles games broadcast nationally by NBC Sports have aired on WCAU, mostly "Sunday Night Football" contests but also Super Bowl LII, which saw the Eagles clinch their first NFL championship in the modern Super Bowl era.