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Confidence: Medium · Source: FCC ULS · As of 2026-09-11

WM7Z callsign genealogy

Currently held by Thompson, William C

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 WM7Z's current licensee, walking backwards.

  1. KB8QPQcancelled· E
    ARMSTRONG, STEVEN DUTgranted 2004-02-25cancelled 2010-06-15

Successor callsigns

Callsigns held now by people who previously held WM7Z.

  1. NW7BTcancelled· E
    Thompson, William CWAgranted 2008-03-28cancelled 2010-05-18

All historical holders

Every license row we've seen with the callsign WM7Z, oldest first.

  • BROWN, CHARLES W AZ
    1988-04-26 → cancelled 2000-04-27
  • Thompson, William C WA
    2002-05-28 → cancelled 2008-03-28
  • ARMSTRONG, STEVEN D UT
    2020-04-30 active
← Back to WM7Z License history →