June 18, 1933  KTRB AM  740 KCs became the first commercial broadcast station on the air in Modesto and Stanislaus County.  The station studios and transmitter were located in a small building at the corner of Sylvan and McHenry in Modesto and was limited to 250 watts and daytime operation only. In 1942 KTRB moved to new studios on Norwegian Ave. in Modesto where they increased their power from 1,000 watts to 10,000 watts over the next several years and changed frequency to 860 KCs.
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April 3, 1948  KBEE-FM  103.3 MHz. The McClatchy newspaper group from Sacramento put KBEE-FM 103.3 MHz on the air from studios next to their Modesto Bee newspaper building in downtown Modesto becoming the 2nd commercial broadcast station in the market.
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Late 1949 KTRB-FM 104.1 MHz came on the air becoming the third commercial broadcast station.
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October 14, 1949  KTUR 1390 KCs came on the air in Turlock, CA with studios on Quincy Rd on the northwestern fringes of the City. It was the 4th commercial broadcast station on the air in the market.
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March 20, 1950 KMOD 1360 KCs became the 5th area commercial broadcast station operating from studios on Orangeburg Ave. just East of Oakdale Rd. 
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November 1, 1951. KBOX 970 KCs  became  6th commercial station in Modesto on the air November 1, 1951 with studios in the Black Bldg. in downtown Modesto with antennas and transmitter near the corner of Sylvan and Oakdale Rd.   
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1951- 1963  Note:  The FCC imposed a freeze on the issuance of commercial broadcast licenses in the late 50s which created a gap of 12 years before the next license was issued to KLOC in 1963.
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October 17, 1963  KLOC 920 KCs Ceres, CA was the 7th commercial broadcaster in the market with studios and transmitter located on Iowa Ave. off Paradise Rd. west of Modesto. 
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June 6, 1966 KOSO-FM 93.1 MHz  in Patterson The 8th commercial broadcaster in the market with studios located at the corner of West Main and Carpenter Rd. east of Patterson.  Their transmitter was on top of Mt. Oso west of Patterson, Ca. 

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October 1, 1975  KITA FM  102.3 MHz Modesto, CA    This station became number 9 in the market. It was originally an all Spanish station operating from a mobile studio next to KMOD's studios on Orangeburg Ave. Principal owner of the station was Bob Fenton,  owner of KFIV.  It became KFIV-FM. 
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March 3, 1978  KMIX-FM  98.3 MHz Turlock, CA This was the FM half of KCEY in Turlock with studios and transmitter located at the corner of Geer Rd and Santa Fe Ave. outside of Hughson, CA.
This became the 10th station  in the market.
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January 15, 1979  KQKK 96.7 MHz, Manteca, CA  became the 11th station in the market.  
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March 11, 1985.  KDJK-FM 95.1 MHz in Oakdale  became the 12th commercial broadcast station in the market.  Studio were in Oakdale with transmitter in the foothills near Keystone in Tuolumne County.  
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April 5, 1987. KPLA-AM  770 KCs Riverbank, CA   became the 13th station in the market. The station is licensed to Riverbank with studios and transmitter located on Cleveland Ave. in Oakdale, Ca.   Call Sign today is KCBC.
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January 13, 1995  KEJC-FM  93.9 MHz Modesto, CA became number 14 in the market signing on in 1995 as "The Ranch". .  
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July 10, 2006, KMPH 840 KHz became the 15th station on July 10, 2006 in the market replacing  the first station KTRB which was moved to San Francisco.
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Non-Commercial Stations

KRJC FM/ Pirate's Radio  107.5  (Non Commercial Education)
Modesto Junior College













Commercial Broadcast Stations
Modesto Market