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

NP4C callsign genealogy

Currently held by GARCIA PIZARRO JR, BENJAMIN

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 NP4C's current licensee, walking backwards.

  1. KP4SXactive· E
    MEACHAM III, WILLIAM EPRgranted 2024-11-14
  2. WX4Aactive· E
    Boquiren, Billie MFLgranted 2016-12-23
  3. KW1Hactive· E
    Mathias, StevenAZgranted 2019-02-09
  4. AG7RIcancelled· E
    Mathias, StevenAZgranted 2018-12-13cancelled 2019-02-09

Successor callsigns

Callsigns held now by people who previously held NP4C.

  1. K8EMEcancelled· E
    ORTIZ, LUIS GMIgranted 2019-11-13cancelled 2026-03-24

All historical holders

Every license row we've seen with the callsign NP4C, oldest first.

  • ORTIZ, LUIS G MI
    1993-12-07 → cancelled 2000-01-21
  • GARCIA PIZARRO JR, BENJAMIN PR
    2022-04-30 active
← Back to NP4C License history →