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

AC4K callsign genealogy

Currently held by BAUER, DANA S

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 AC4K's current licensee, walking backwards.

  1. KA4CIAcancelled
    CENTRAL ALABAMA AMATEUR RADIO CLUBALgranted 2021-02-17cancelled 2022-07-02
  2. KI4CAactive· E
    Porter, Michael CFLgranted 2024-06-29
  3. KQ4OKMcancelled· E
    Porter, Michael CFLgranted 2024-02-06cancelled 2024-06-29

Successor callsigns

Callsigns held now by people who previously held AC4K.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AC4K, oldest first.

  • BAUER, DANA S FL
    1988-05-24 → cancelled 2000-05-25
  • KLOSOWSKI, JOHN M KY
    2010-04-17 → cancelled 2022-06-14
  • CENTRAL ALABAMA AMATEUR RADIO CLUB AL
    2022-07-02 active
← Back to AC4K License history →