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The History Of
1450 AM Radio

San Francisco, California

By John Schneider

The potential of radio for ministering to the public was obvious from the beginning to pastor and administrators of the Glad Tidings Temple, located on Ellis Street in San Francisco. A radio application was made in 1922, and a license was granted, giving the call letters KDZX. There is no evidence that the station ever went on the air, however, and the call letters had been deleted by July of the following year.

The church’s second attempt at building a radio station was more successful, however. A license was issued again in 1925 for the call letters KFVZ. These call letters were chosen by the Federal Radio Commission in their pattern of issuing call letters in alphabetical order. Indications are that the call letters were never used, and that the church requested and was granted a modification of the call letters to KGTT, standing for “Glad Tidings Temple.”

The station went on the air November 30, 1925, with a power of 50 watts, and was operated by the pastor, Robert J. Craig, who also served as the station’s manager and announcer. The station initially broadcast on 1420 kc., where it shared the frequency with KFQU in Holy City, California.

Sometime before 1930, the station was transferred to the Golden Gate Church, and the call letters were changed to KGGC. (It may be that this simply represented a change of name of the church, however.)

Les Malloy, c. 1955

KGTT/KGGC had been a minor station in the Bay Area through the twenties and thirties. That changed in 1939 when Sherwood Patterson purchased the station and changed the call letters to KSAN. New studios were constructed in the Merchandise Mart near Market Street. A radio tower was erected on the roof of the building, and a 250 watt transmitter was installed.

The reborn station attracted considerable attention with its programming of popular music and disk jockeys. Two popular KSAN personalities in 1941 were Les Malloy and Vic Paulsen. Evening host Malloy called himself the “Midnight Son,” while Paulsen, who held down the morning shift, was known as the “Rising Son.” After the Pearl Harbor attack later that year, however, Paulsen’s nickname was quickly dropped.

Dave Crosatto had the first sponsored all-night program in the Bay Area on KSAN, supported by the Mark Hopkins Hotel and the Yellow Cab Company. Perhaps the most notable aspect of KSAN’s programming, however, was its devotion to horse race results. At any time of the day, programs were interrupted to announce the latest results from Golden Gate Fields.

The station found instant success with this policy, as Vic Paulsen told it. He explained that even people who didn’t like the station would listen, just to keep up on their bets. This policy did not win any fans at the F.C.C., however, and the station reportedly lost its bid for a 1,000-watt frequency to a Santa Cruz station because it gave more attention to race results than to public service features.

KSAN remained as a popular music station in the Bay Area throughout the forties and early fifties. In the mid-fifties, the music format was changed to feature rhythm and blues music, aimed at a primarily black audience. This continued to be the station’s reason for existence for a number of years. In 1964, the station was purchased by Les Malloy, who changed the call letters to KSOL, reflecting the evolution of rhythm and blues into “Soul” music.

The station competed for the black audience with KDIA in Oakland (formerly KLS and KWBR) until 1971. That year, the station was sold again, and the call letters were changed to KEST. Programming was changed to feature mainstream adult-oriented music, despite many complaints from the station’s loyal black listeners. KEST was acquired by Douglas Broadcasting, Inc., in December of 1988.


Radio Service Bulletins, 1922 and 1925.

Interview between author and Vic Paulsen, former KSAN announcer, San Francisco, California, December 9, 1970.

Interview between author and Dave Crosatto, former KSAN announcer, San Francisco, California, April 27, 1970.

The Federal Radio Commission Station List, as authorized on 11/11/28. With research by Barry Mishkind, 1993-94.


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17 July 2020 3:00 PM

Thank you for the time traveling groove back to the coolest days of rock and roll.

1 August 2021 9:57 PM

So how did KSAN get to 94.9 when Tom Donahue and KMPX cohorts moved there in 68? Didn’t KSFR become KSAN? And why isn’t that included? Thanks for clearing up my mis-rememberings, thanks!

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