In the fall of 1977, Wometco launched a national over-the-air subscription television service called Wometco Home Theater, and opted to use WTVG as its flagship station. On July 16, 1979, the station's calls were changed to WWHT to match the program service (the WTVG call letters are now used by the ABC affiliate and one-time network O&O in Toledo, Ohio). Viewers who subscribed to WHT were given set-top converter boxes which descrambled the channel 68 signal. In a twist of irony, the converter boxes were manufactured by Blonder-Tongue Laboratories, thus fulfilling their original ambitions for the station they launched only three years earlier.