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

KC4WM callsign genealogy

Currently held by KIRK, WILLIAM F

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 KC4WM's current licensee, walking backwards.

  1. N1WAMcancelled· E
    Melendez, WilliamFLgranted 2016-07-12cancelled 2016-08-26
  2. KC4WAMcancelled· G
    Melendez, WilliamFLgranted 2014-04-18cancelled 2016-07-12
  3. KK4WOUcancelled· G
    Melendez, WilliamFLgranted 2014-01-21cancelled 2014-04-18

Successor callsigns

Callsigns held now by people who previously held KC4WM.

  1. KC4AMactive· E
    Melendez, WilliamFLgranted 2018-03-02

All historical holders

Every license row we've seen with the callsign KC4WM, oldest first.

  • KIRK, WILLIAM F KY
    1995-11-28 → cancelled 2007-11-29
  • Melendez, William FL
    2016-08-26 → cancelled 2018-03-02
← Back to KC4WM License history →