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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4FL callsign genealogy

Currently held by WHITE JR, GEORGE W

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by K4FL's current licensee, walking backwards.

  1. W4GXactive· E
    Dunbar, AndrewCAgranted 2025-09-12
  2. KO6GGVcancelled· E
    Dunbar, AndrewCAgranted 2024-10-12cancelled 2025-09-12

Successor callsigns

Callsigns held now by people who previously held K4FL.

  1. AB4RRactive
    Both Sides Of The River Radio ClubFLgranted 2023-07-14
  2. AB4RRcancelled
    Both Sides Of The River Radio ClubFLgranted 2021-08-06cancelled 2021-09-04
  3. W3LDcancelled· E
    WILLIAMSON JR, O GORDONFLgranted 2018-05-18cancelled 2018-07-06
  4. N4TTcancelled· E
    WILLIAMSON JR, O GORDONFLgranted 2017-01-27cancelled 2017-03-25
  5. N4TTcancelled· E
    WILLIAMSON JR, O GORDONFLgranted 2014-07-18cancelled 2016-06-14
  6. N4TTcancelled· E
    WILLIAMSON JR, O GORDONFLgranted 2012-01-04cancelled 2012-08-17

All historical holders

Every license row we've seen with the callsign K4FL, oldest first.

  • WHITE JR, GEORGE W AZ
    2008-05-08 → cancelled 2008-07-09
  • WILLIAMSON JR, O GORDON FL
    2010-07-30 → cancelled 2012-01-04
  • WILLIAMSON JR, O GORDON FL
    2013-12-28 → cancelled 2014-07-18
  • WILLIAMSON JR, O GORDON FL
    2016-06-14 → cancelled 2017-01-27
  • WILLIAMSON JR, O GORDON FL
    2018-01-26 → cancelled 2018-05-18
  • Both Sides Of The River Radio Club FL
    2018-09-05 → cancelled 2021-08-06
  • Both Sides Of The River Radio Club FL
    2021-09-04 → cancelled 2023-07-14
  • WILLIAMSON JR, O GORDON FL
    2023-08-22 active
← Back to K4FL License history →