 This programming would last until the 1950s when WLAD-FM evolved into an extension of its then daytime-only sister station, WLAD.In the mid 1960s, spurred on by FCC regulations forcing FM stations to create formats separate from their AM sister stations, WLAD-FM upgraded to a stereo signal and flipped to an easy listening format, which was automated in 1975.In 1979, the call letters were changed to WDAQ, competing with WEZN from Bridgeport, Connecticut and WHUD from Peekskill, New York for Greater Danbury's easy listening audience.