Chronology of call letters KDKA

• Date: ...Fall 1921-March 29, 1941... ( NOTE: License issued October 27, 1920; did not broadcast under that call immediately, continuing to use 8ZZ at least until November 2, 1920)
• Previous call letters: 8ZZ
• Frequency:
  • 833 kHz (Fall 1921-May 15, 1923) [concurrently with 619, see history page]
  • 619 kHz (...March 1, 1923...) [concurrently with 833, see history page]
  • 920 khz (May 15, 1923-June 30, 1924...)
  • 970 khz (...June 30, 1925-June 30, 1926...)
  • 950 khz (...June 30, 1927-November 11, 1928)
  • 980 kHz (November 11, 1928-March 29, 1941)
  • 1020 kHz (March 29, 1941...)
• Location:
  • East Pittsburgh, Pennsylvania (...April 1, 1922-June 30, 1928...)
  • Pittsburgh, Pennsylvania (...November 11, 1928-March 29, 1941...)
• Owner of license:
  • Westinghouse Electric & Manufacturing Co. (...April 1, 1922-June 30, 1928...)