First station[]
- Date: March 14, 1922-March 29, 1941...
- Frequency:
- 833 khz (March 14, 1922-September, 1922) [concurrently with 619, see history page] ( NOTE: Apparently station ceased to use 833 and shifted those broadcasts to 750 in September, 1922.)
- 619 kHz (...September 1, 1922-May 15, 1923...) [concurrently with 750 and 833, see history page]
- 750 kHz (...October 2, 1922-May 15, 1923...) [concurrently with 619, see history page]
- 550 khz (May 15, 1923-March 29, 1941...)
- Location:
- Saint Louis, Missouri (March 14, 1922-March 29, 1941...)
- Owner of license:
- St. Louis Post Dispatch (Pulitzer Publishing Co.) (March 14, 1922-June 30, 1931...)
Second station[]
(actually same as first station after changes in call)
- Date: ...March 10, 1997
- Frequency:
- 550 khz (...March 10, 1997)
- Location:
- Saint Louis, Missouri (...March 10, 1997)
- Subsequent call letters: KTRS