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

K4PY callsign genealogy

Currently held by DE CASTRO, JUAN

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 K4PY's current licensee, walking backwards.

  1. K3OUactive· E
    Hignutt Jr, EmanuelMDgranted 2025-12-09
  2. AC3NWcancelled· E
    Hignutt Jr, EmanuelMDgranted 2024-12-10cancelled 2025-12-09
  3. KD3AHKcancelled· E
    Hignutt Jr, EmanuelMDgranted 2024-12-10cancelled 2025-01-21

Successor callsigns

Callsigns held now by people who previously held K4PY.

  1. AG7Oactive· E
    DE CASTRO, JUANCOgranted 2021-09-21
  2. WU0Jcancelled· E
    DE CASTRO, JUANCOgranted 2021-02-12cancelled 2021-03-09

All historical holders

Every license row we've seen with the callsign K4PY, oldest first.

  • Hernandez, Celimo F FL
    2005-11-08 → cancelled 2017-12-09
  • DE CASTRO, JUAN CO
    2017-12-29 → cancelled 2021-02-12
  • DE CASTRO, JUAN CO
    2021-03-09 → cancelled 2021-09-21
  • LAFON, VICTOR L VA
    2023-10-11 active
← Back to K4PY License history →