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

AB4U callsign genealogy

Currently held by COOK JR, RICHARD F

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 AB4U's current licensee, walking backwards.

  1. K4ZXRcancelled· E
    Brigida, Joel MFLgranted 2014-03-21cancelled 2018-11-14
  2. KK4UKKcancelled· T
    Brigida, Joel MFLgranted 2013-10-17cancelled 2014-03-21

Successor callsigns

Callsigns held now by people who previously held AB4U.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AB4U, oldest first.

  • COOK JR, RICHARD F VA
    2014-07-22 → cancelled 2016-10-25
  • Brigida, Joel M FL
    2018-11-14 active
← Back to AB4U License history →