Chronology of call letters WIP

• Date: March 20, 1922-March 29, 1941...
• Frequency:
  • 833 khz (March 20, 1922-May 15, 1923) [concurrently with 619, see history page]
  • 619 kHz (...December 1, 1922...) [concurrently with 833, see history page]
  • 590 khz (May 15, 1923-June 30, 1927...)
  • 860 khz (...June 30, 1928...)
  • 610 kHz (...March 29, 1941...)
• Location:
  • Philadelphia, Pennsylvania (March 20, 1922-March 29, 1941...)
• Owner of license:
  • Gimbel Brothers Inc. (March 20, 1922-June 30, 1928...) (See also WAAK, WGBS.)