KRDU (1130 AM) is a commercial radio station licensed to Dinuba, California, United States, and serving the Fresno-Visalia market. It airs a religious format and is owned by iHeartMedia, Inc. KRDU is regarded as America's first commercial Christian radio station. The studios are located on Shaw Avenue in North Fresno.
KRDU's transmitter is sited off Road 136 in Cutler, California. As of 2019, KRDU is the radio home of the Fresno Grizzlies, a Pacific Coast League Triple A minor league baseball team connected with the Colorado Rockies.
History KRDU signed on the air on December 26, 1948, at 1130 kilocycles.Broadcasting Yearbook, (1949 edition), page 78 It was owned by the Radio Dinuba Company with studios on L Street. The call sign represents Radio DinUba. At first it was a daytimer, required to go off the air at night and powered at only 250 watts. In 1949, it moved to 1240 kHz with 250 watts full-time.
In 1961, it moved back to 1130 kHz with full-time authorization, powered at 1,000 watts around the clock.Broadcasting Yearbook, (1977 edition), page C-19 In 1975, it added an FM station, KLTA (now KSOF, still co-owned with KRDU).
In the 1990s, the power was increased to its current 5,000 watts days and 6,200 watts nights. In 1999, KRDU was acquired by AMFM, Inc.Broadcasting & Cable Yearbook, (2000 edition), page D-42 AMFM was acquired by Clear Channel Communications, which later changed its name to iHeartMedia.
References
External links (Guide to reading History Cards)