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

W9WM callsign genealogy

Currently held by Belt, William J

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 W9WM's current licensee, walking backwards.

  1. K9DUFactive· E
    Duffy, Jason CILgranted 2017-10-06
  2. KD9JFWcancelled· E
    Duffy, Jason CILgranted 2017-08-30cancelled 2017-10-06

Successor callsigns

Callsigns held now by people who previously held W9WM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9WM, oldest first.

  • MOORE, WILLIAM S IN
    1996-07-31 → cancelled 2001-01-25
  • Belt, William J IL
    2017-01-30 active