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

AB4UT callsign genealogy

Currently held by Thomas, William D

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 AB4UT's current licensee, walking backwards.

  1. AA4YDcancelled· E
    Thomas, William DTNgranted 2024-02-23cancelled 2024-05-18
  2. W4YDDcancelled· E
    Thomas, William DTNgranted 2020-03-21cancelled 2024-02-23
  3. KC4YDDcancelled· G
    Thomas, William DTNgranted 2018-09-12cancelled 2020-03-21
  4. KN4OQPcancelled· T
    Thomas, William DTNgranted 2018-08-21cancelled 2018-09-12

Successor callsigns

Callsigns held now by people who previously held AB4UT.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AB4UT, oldest first.

  • MIDDLETON JR, GEORGE R FL
    2000-01-21 → cancelled 2012-04-11
  • Thomas, William D TN
    2024-05-18 active
← Back to AB4UT License history →