Chronology of call letters WGM

First station

• Date: March 17, 1922-May 1922 ( NOTE: According to one source, the call was changed sometime between those dates but later restored; however the United States Department of Commerce Radio Service Bulletin dated June 1, 1922 indicates that the station was deleted by that date, so the "restored" call is not for the same station.)
• Frequency:
  • 619 khz (March 17, 1922-May 1922...)
  • 833 khz (March 17, 1922-May 1922...)
• Location:
  • Atlanta, Georgia (March 17, 1922-May 1922)
• Owner of license:
  • Atlanta Constitution (March 17, 1922-May 1922) ( NOTE: United States Department of Commerce Radio Service Bulletin dated May 1, 1922 gives Georgia Railway & Power Co. with Atlanta Constitution in parentheses afterward.)

Second station

• Date: ...November 1, 1922-August 28, 1923 (See note on first station.)
• Frequency:
  • 750 khz (...November 1, 1922-May 15, 1923)
  • 700 khz (May 15, 1923...)
  • 710 khz (...June 30, 1923-August 28, 1923)
• Location:
  • Atlanta, Georgia (...November 1, 1922-August 28, 1923)
• Owner of license:
  • Atlanta Constitution (...November 1, 1922-August 28, 1923)

Third station

• Date: August 25, 1926-August 1, 1928
• Frequency:
  • 1440 khz (August 25, 1926-August 1, 1928)
• Location:
  • Jeannette, Pennsylvania (August 25, 1926-August 1, 1928)
• Owner of license:
  • Verne and Elton Spencer (August 25, 1926-August 1, 1928)