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

AC9AB callsign genealogy

Currently held by Kaczorek, Claude

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 AC9AB's current licensee, walking backwards.

  1. AB9ZScancelled· E
    Kaczorek, Claude JWIgranted 2002-08-19cancelled 2011-09-13
  2. AB9ZRcancelled· E
    Kaczorek, Claude JWIgranted 2002-08-19cancelled 2011-08-03
  3. KC9CHKcancelled· E
    Kaczorek, Claude JWIgranted 2002-08-19cancelled 2011-08-01

Successor callsigns

Callsigns held now by people who previously held AC9AB.

No current licensee on record previously held this callsign.

← Back to AC9AB License history →