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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W2DZO callsign genealogy

Currently held by HEIDTMANN SR, HENRY G

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 W2DZO's current licensee, walking backwards.

  1. N4VHKactive· T
    HEIDTMANN IV, HENRY GVAgranted 2024-12-28
  2. KI4DDFcancelled· T
    HEIDTMANN IV, HENRY GNCgranted 2003-11-24cancelled 2004-10-13

Successor callsigns

Callsigns held now by people who previously held W2DZO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W2DZO, oldest first.

  • HEIDTMANN SR, HENRY G NY
    1996-06-18 → cancelled 2002-04-12
  • HEIDTMANN III, HENRY G NC
    2022-10-08 active
← Back to W2DZO License history →