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

N4ZZW callsign genealogy

Currently held by MARTIN, ROBERT D

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 N4ZZW's current licensee, walking backwards.

  1. AB4ZJexpired· E
    CROWDER, JIMMIE BFLgranted 2007-01-13cancelled 2019-03-28
  2. AF4ASactive· E
    STRAZZULLA, ANTHONY MFLgranted 2022-10-05
  3. KK4LLSactive· E
    SHARP JR, MICHAEL RFLgranted 2026-03-14
  4. KM4TLKcancelled· T
    Sharp Jr, Michael RFLgranted 2016-04-21cancelled 2016-05-10

Successor callsigns

Callsigns held now by people who previously held N4ZZW.

No current licensee on record previously held this callsign.

← Back to N4ZZW License history →