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

AA4O callsign genealogy

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 AA4O's current licensee, walking backwards.

  1. WZ4Vactive
    Monroe Amateur Radio ClubTNgranted 2026-06-04
  2. KI4PAVcancelled
    Monroe Amateur Radio ClubTNgranted 2006-05-08cancelled 2006-06-09

Successor callsigns

Callsigns held now by people who previously held AA4O.

  1. K4UCactive· E
    GIBSON, WILLIAM HKYgranted 2019-08-21

All historical holders

Every license row we've seen with the callsign AA4O, oldest first.

  • WUDIGA, KALI NC
    2021-10-04 active
  • —
    — → cancelled 1999-06-02
← Back to AA4O License history →