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

NU4X callsign genealogy

Currently held by BERGAN, WILLIAM R

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 NU4X's current licensee, walking backwards.

  1. KE4URcancelled· E
    LUTTRELL, TERRY MALgranted 2013-01-03cancelled 2019-07-16
  2. WA4GJD
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held NU4X.

  1. NM9Rcancelled· E
    DUNKER, JOHN PINgranted 2017-06-27cancelled 2017-11-17

All historical holders

Every license row we've seen with the callsign NU4X, oldest first.

  • BERGAN, WILLIAM R FL
    2007-06-15 → cancelled 2008-06-11
  • DUNKER, JOHN P IN
    2010-08-24 → cancelled 2017-06-27
  • LUTTRELL, TERRY M AL
    2019-07-16 active
← Back to NU4X License history →