"The
KRKD 1150AM transmitter atop the Spring Arcade Building in downtown Los Angeles
began broadcasting in 1932 and continued until 1937 when the transmitter was moved. For years the frequency was shared with
KFSG. In the 1960's the station was bought by
Aimee Semple McPherson's International Church of the Foursquare Gospel. Since then it has changed call signs several times and is now known as
KTLK, with a transmitter
located in the City of Industry."
The frequency was shared with KFSG, and the church of Aimee Semple McPherson bought it to expand KFSG.
"McPherson published the weekly
Foursquare Crusader. She began broadcasting on radio in the early 1920s. In April 1922, she became the first woman to preach a sermon wirelessly.
[70] With the opening of Foursquare Gospel-owned
KFSG in 1924, she became the second woman granted a broadcast license by the
Department of Commerce, which supervised
broadcasting at the time." (Wikipedia)
The calls stood for The Arcade Building on Hollywood Blvd., but many of us pronounced it as "crooked".