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

AC2DU callsign genealogy

Currently held by ALLISON, JOSEPH R

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 AC2DU's current licensee, walking backwards.

  1. K2GRactive· E
    KOTTSCHLAG, GERHARD RNEgranted 2022-04-12
  2. AC4CFcancelled· E
    KOTTSCHLAG, GERHARD RNEgranted 2010-11-23cancelled 2012-07-06

Successor callsigns

Callsigns held now by people who previously held AC2DU.

No current licensee on record previously held this callsign.

← Back to AC2DU License history →