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

K4TF callsign genealogy

Currently held by WILLMOT, WILLIAM C

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 K4TF's current licensee, walking backwards.

  1. AE4SIcancelled· E
    Guthrie III, John TALgranted 2020-10-06cancelled 2023-02-28
  2. KY4AScancelled· E
    Guthrie III, John TALgranted 2020-08-25cancelled 2020-10-06

Successor callsigns

Callsigns held now by people who previously held K4TF.

  1. WB4WBcancelled· E
    Bass, William HNCgranted 2021-02-09cancelled 2023-10-14

All historical holders

Every license row we've seen with the callsign K4TF, oldest first.

  • WILLMOT, WILLIAM C FL
    2005-02-18 → cancelled 2015-10-12
  • BASS, WILLIAM H NC
    2017-05-26 → cancelled 2021-02-09
  • Guthrie III, John T AL
    2023-02-28 active
← Back to K4TF License history →