Chronology of call letters KSL

First station

• Date: March 11, 1922-June 16, 1923
• Frequency:
  • 833 khz (March 11, 1922-June 30, 1922...)
• Location:
  • San Francisco, California (March 11, 1922-June 16, 1923)
• Owner of license:
  • The Emporium (March 11, 1922-June 16, 1923)

Second station

• Date: March 24, 1925-March 29, 1941...
• Previous call letters: KFPT
• Frequency:
  • 900 khz (March 24, 1925...) (Shown in one reference; not confirmed in most sources.)
  • 1000 khz (...June 30, 1925-June 30, 1926...)
  • 990 khz (...June 30, 1927-June 30, 1928...)
  • 1130 kHz (...March 29, 1941)
  • 1160 kHz (March 29, 1941...)
• Location:
  • Salt Lake City, Utah (...June 30, 1925-March 29, 1941...)
• Owner of license:
  • The Salt Lake Tribune (March 24, 1925...)
  • Radio Service Corporation of Utah (...June 30, 1926-June 30, 1928...)