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

N4HWM callsign genealogy

Currently held by HEAD, BOBBY 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 N4HWM's current licensee, walking backwards.

  1. KO4NIVcancelled· T
    Mattox, Harry WALgranted 2021-03-01cancelled 2021-03-23

Successor callsigns

Callsigns held now by people who previously held N4HWM.

  1. K4AGRactive· E
    HEAD, BOBBY JALgranted 2018-07-31
  2. N6RWXexpired· G
    VANDERGRIFF, REECE JCAgranted 1988-04-19cancelled 2000-04-20

All historical holders

Every license row we've seen with the callsign N4HWM, oldest first.

  • HEAD, BOBBY J AL
    2017-07-25 → cancelled 2018-07-31
  • Mattox, Harry W AL
    2021-03-23 active
← Back to N4HWM License history →