Chronology of call letters WDAP

• Date: May 19, 1922-June 30, 1924... ( Note: Some sources show change of call letters to WGN on June 1, 1924, other listings still show WDAP operating after that date)
• Frequency:
  • 833 khz (May 19, 1922-June 30, 1924...) [concurrently with 619, see history page]
  • 619 kHz (...April 2, 1923...) {{Concurrent|833}
• Location:
  • Chicago, Illinois (May 19, 1922-June 30, 1924...)
• Owner of license:
  • Mid West Radio Central (Inc.) (May 19, 1922-1923)
  • Board of Trade (...June 30, 1923-May 1924)
  • Drake Hotel (May, 1924...)
• Subsequent call letters: WGN