CIDR-FM

CIDR-FM is the callsign for a radio station, broadcasting at 93.9 FM in Windsor, Ontario. The station broadcasts an adult album alternative format using the brand name 93-9 The River. It is owned and operated by Bell Media. It is one of the few commercial adult album alternative stations in Canada and is the only one in Ontario, with the others located in British Columbia. It was also Canada's first AAA-formatted station at launch.

History

CKLW-FM

The station was originally launched by Western Ontario Broadcasting in 1949 as CKLW-FM, rebroadcasting the CBC Dominion Network programming of sister station CKLW. It dropped the CBC affiliation in 1950 with the sign-on of CBE-AM 1550, and became the Metro Detroit outlet of the Mutual Broadcasting System.

The stations were subsequently acquired in 1956 by a consortium including the American company RKO; RKO subsequently acquired full ownership of the stations in 1963. Also that year, CKLW-FM began airing distinct programming from its AM sister station. It originally broadcast two hours of separate programming each evening from 7 to 9 p.m., and in 1967, this was expanded to six hours per night (from 6 p.m. to midnight).