Radio-TV Broadcast History
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First station[]

  • Date: December 8, 1921-March 23, 1922 ( NOTE: One source states that station ended operations on March 23, 1922; another listing shows this station still in service on May 15, 1922, but also shows the second station on that date. The United States Department of Commerce Radio Service Bulletin[1] dated April 1, 1922 indicates the station had ceased operations, so the March date is probably correct.)
  • Frequency:
    • 500 khz (...January 3, 1922...) [concurrently with other listed frequencies, see history page]
    • 833 khz (December 8, 1921-March 23, 1922) (Assumed to start at beginning, not given in any source for operations prior to January 3, 1922.)
    • 1000 khz (...January 3, 1922...) [concurrently with other listed frequencies, see history page]
  • Location: San Francisco, California (...January 3, 1922-March 23, 1922)
  • Owner of license:
    • Edwin L. Lorden (...January 3, 1922-March 23, 1922)

Second station[]

  • Date: April 8, 1922-December 11, 1925
  • Frequency:
    • 833 khz (April 8, 1922-June 30, 1923...)
    • 1190 khz (...June 30, 1924...)
    • 1200 khz (...March 1925-June 30, 1925...)
  • Location:
  • Owner of license:
    • William A. Mullins Electric Co. (...May 15, 1922-June 30, 1923...)
    • Tacoma Daily Ledger (...June 30, 1924-March 1925...)


Third station[]

  • Date: March 27, 1928-March 15, 1982
  • Previous call letters: KFBC
  • Frequency:
    • 1210 khz (...June 30, 1928...)
    • 1330 kHz (...March 29, 1941)
    • 1360 kHz (March 29, 1941...)
  • Location:
  • Owner of license:
    • Arthur W. Yale (...June 30, 1928...)
  • Subsequent call letters: KCNN

Fourth Station[]

  • Date: July 3, 2020

References[]

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