First station[]
- Date: October 1, 1990-January 15, 1993
- Previous call letters: KKJZ
- Frequency:
- 540 kHz (October 1, 1990-January 15, 1993)
- Location:
- Costa Mesa, California (October 1, 1990-January 15, 1993)
- Subsequent call letters: KOJY
Second station[]
- Date: December 5, 1998-February 28, 2000
- Previous call letters: KKHI
- Frequency:
- 1510 kHz (December 5, 1998-February 28, 2000)
- Location:
- San Rafael, California (December 5, 1998-February 28, 2000)
- Subsequent call letters: KMZT
( NOTE: KJQI applied to relocate license from San Rafael to Piedmont. The application was denied by the FCC on August 4, 1999. At some point the station had finally received permission to relocate before April 11, 2005.)
Third station[]
(actually same as second, after two call sign changes)
- Date: March 19, 2001-March 25, 2002
- Previous call letters: KMZT
- Frequency:
- 1510 kHz (March 19, 2001-March 25, 2002)
- Location:
- Piedmont/San Rafael, California (See Note below) (March 19, 2001-March 25, 2002)
- Subsequent call letters: KJAZ
( NOTE: Predecessor station KJQI (see second station above) applied to relocate license from San Rafael to Piedmont. The application was denied by the FCC on August 4, 1999. At some point the station had finally received permission to relocate before April 11, 2005.)