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

N4USM callsign genealogy

Currently held by JONES, THOMAS W

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 N4USM's current licensee, walking backwards.

  1. N4WDYcancelled· T
    WILKES, HAROLD WGAgranted 2010-04-06cancelled 2016-08-16
  2. N4MFLcancelled· T
    WILKES, HAROLD WFLgranted 2009-10-02cancelled 2010-04-06
  3. KI4MBKcancelled· T
    WILKES, HAROLD WFLgranted 2005-10-12cancelled 2009-10-02

Successor callsigns

Callsigns held now by people who previously held N4USM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N4USM, oldest first.

  • JONES, THOMAS W NC
    1998-09-25 → cancelled 2010-09-28
  • WILKES, HAROLD W GA
    2016-08-16 active
← Back to N4USM License history →