Radio-TV Broadcast History
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First station[]

  • Date: March 15, 1922-August 21, 1923
  • Frequency:
    • 833 khz (March 15, 1922-August 21, 1923)
  • Location:
  • Owner of license:
    • Altadena Radio Laboratory (March 15, 1922-August 21, 1923)

Second station[]

  • Date: January 8, 1924-June 15, 1945... ( Note: One source gives January 22, 1924 as start date.)
  • Frequency:
    • 960 khz (...June 30, 1924...) (according to one source, but see below)
    • 790 khz (January 8, 1924-January 12, 1925)
    • 1000 khz (January 12, 1925-March 26, 1925)
    • 830 khz (March 26, 1925-June 15, 1927)
    • 780 khz (June 15, 1927-November 11, 1928)
    • 790 khz (November 11, 1928-March 29, 1941)
    • 810 kHz (March 29, 1941...)
  • Location:
  • Owner of license:
    • General Electric Co. (...June 30, 1924-December 23, 1941)
    • RCA (December 23, 1941-February 1, 1942)
    • Blue Network Company (February 1, 1942-October 12, 1943)
    • American Broadcasting System, Inc. (October 12, 1943-June 15, 1945)
    • American Broadcasting Co. (June 15, 1945...)

Affiliated with:

KGO-TV[]

  • Date: May 5, 1949...
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