The year 1966 in radio involved some significant events.
Events
September:
KWNT-FM signs on the air, simulcasting the AM signal of KWNT (1580 AM) and its country music format. Unlike the AM signal, which is daytime only, KWNT-FM's broadcast day goes to at least 10 p.m.
September 16:
WFIL 560 AM in
Philadelphia changes from an MOR adult standard format to top 40 as "The Pop Explosion – Famous 56"
December 15 -
WGIL-FM of
Galesburg, Illinois signs on at 94.9 FM as sister station to WGIL-AM; by 1974, the station's call letters are changed to WAAG.
Debuts
May 3 –
Swinging Radio England and Britain Radio commence broadcasting on
AM, with a combined potential 100,000 watts, from the same ship anchored off the south coast of England in international waters.
October 22 –
WJVM (94.3 FM) launches in Sterling, Illinois.