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

AI4BZ callsign genealogy

Currently held by Haefner, Thomas 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 AI4BZ's current licensee, walking backwards.

  1. KG4ZRNcancelled· E
    Haefner, Thomas JFLgranted 2002-10-22cancelled 2003-10-14
  2. KG4VQCcancelled· G
    Haefner, Thomas JFLgranted 2002-10-22cancelled 2003-04-16

Successor callsigns

Callsigns held now by people who previously held AI4BZ.

No current licensee on record previously held this callsign.

← Back to AI4BZ License history →