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

K4GDR callsign genealogy

Currently held by HURLEY JR, WILLIAM H

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 K4GDR's current licensee, walking backwards.

  1. K9HZactive· E
    SCHMIDT II, WILLIAM JTXgranted 2023-03-16
  2. WB0DRHcancelled· E
    Schmidt II, William JILgranted 1996-11-19cancelled 2003-06-03

Successor callsigns

Callsigns held now by people who previously held K4GDR.

  1. K1SQactive· E
    HURLEY JR, WILLIAM HGAgranted 2025-04-04
← Back to K4GDR License history →