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

KO4AB callsign genealogy

Currently held by BRYANT, TIMOTHY J

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 KO4AB's current licensee, walking backwards.

  1. KY4WUcancelled· E
    Borges, Armando JFLgranted 2022-02-14cancelled 2023-05-02
  2. KO4WRPcancelled· E
    Borges, Armando JFLgranted 2022-02-14cancelled 2023-03-28

Successor callsigns

Callsigns held now by people who previously held KO4AB.

  1. WM4Pactive· E
    BRYANT, TIMOTHY JFLgranted 2021-12-11

All historical holders

Every license row we've seen with the callsign KO4AB, oldest first.

  • BRYANT, TIMOTHY J FL
    2011-03-04 → cancelled 2012-03-10
  • Borges, Armando J FL
    2023-05-02 active
← Back to KO4AB License history →