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

KP3X callsign genealogy

Currently held by SANTA SANCHEZ, PEDRO 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 KP3X's current licensee, walking backwards.

  1. KP3JCcancelled· E
    Cifredo-Perello, JoelPRgranted 2020-08-14cancelled 2022-12-17
  2. WP4NVTcancelled· E
    Cifredo Perello, JoelPRgranted 2018-04-17cancelled 2020-08-14

Successor callsigns

Callsigns held now by people who previously held KP3X.

  1. KP4JARactive· E
    ROLDAN, JOSE APRgranted 2020-11-28

All historical holders

Every license row we've seen with the callsign KP3X, oldest first.

  • SANTA SANCHEZ, PEDRO J PR
    2006-10-31 → cancelled 2018-11-27
  • ROLDAN, JOSE A PR
    2018-12-15 → cancelled 2020-11-28
  • Cifredo-Perello, Joel PR
    2022-12-17 active
← Back to KP3X License history →