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

N4MU callsign genealogy

Currently held by NILSEN, CRAIG 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 N4MU's current licensee, walking backwards.

  1. AB7OKactive· E
    Buynytskyy, OleksiyWAgranted 2018-03-13
  2. AG7LZcancelled· E
    Buynytskyy, OleksiyWAgranted 2018-02-16cancelled 2018-03-13

Successor callsigns

Callsigns held now by people who previously held N4MU.

  1. AA2VQcancelled· E
    NILSEN, CRAIG GFLgranted 1998-12-09cancelled 1999-12-31
  2. AB7OKcancelled· E
    HOWARD, WILLIAMIDgranted 1996-01-23cancelled 2000-12-23

All historical holders

Every license row we've seen with the callsign N4MU, oldest first.

  • HOWARD, WILLIAM SC
    2020-10-07 active
  • NILSEN, CRAIG G
    — → cancelled 1998-12-09
← Back to N4MU License history →