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

AB1D callsign genealogy

Currently held by DUDELSON, BARRY

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 AB1D's current licensee, walking backwards.

  1. AB1CFcancelled· E
    Dudelson, BarryCTgranted 2003-02-11cancelled 2003-04-05
  2. KB1JJNcancelled· E
    Dudelson, BarryCTgranted 2003-02-11cancelled 2003-03-11

Successor callsigns

Callsigns held now by people who previously held AB1D.

  1. W1QZactive· E
    MANN, JOHN BRIgranted 2018-07-07

All historical holders

Every license row we've seen with the callsign AB1D, oldest first.

  • DUDELSON, BARRY CT
    2023-01-26 active
  • MANN, JOHN B
    — → cancelled 1998-08-19
← Back to AB1D License history →