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

KP4EC callsign genealogy

Currently held by Ruiz, Enrique (Carlos)

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 KP4EC's current licensee, walking backwards.

  1. KP3CPcancelled· E
    CACERES-RODRIGUEZ, ERNESTOPRgranted 2015-07-03cancelled 2015-07-28

Successor callsigns

Callsigns held now by people who previously held KP4EC.

  1. KP4Ractive· E
    Ruiz, Enrique (Carlos)PRgranted 2023-09-26
  2. KP3CPcancelled· E
    CACERES-RODRIGUEZ, ERNESTOPRgranted 2015-07-03cancelled 2015-07-28
  3. W1GOcancelled· E
    Ruiz, Enrique (Carlos)MAgranted 2013-05-10cancelled 2013-06-29
  4. W1GOterminated· E
    Ruiz, Enrique (Carlos)MAgranted 2013-04-13cancelled 2013-04-15
  5. KF1Ocancelled· E
    Ruiz, Enrique (Carlos)PRgranted 2012-06-08cancelled 2012-07-14
  6. KP4FCCcancelled· E
    Ruiz, Enrique (Carlos)PRgranted 2011-11-08cancelled 2011-12-17

All historical holders

Every license row we've seen with the callsign KP4EC, oldest first.

  • Ruiz, Enrique (Carlos) PR
    2010-05-21 → cancelled 2011-11-08
  • Ruiz, Enrique (Carlos) MA
    2011-12-17 → cancelled 2012-06-08
  • Ruiz, Enrique (Carlos) MA
    2012-07-14 → cancelled 2013-05-10
  • Ruiz, Enrique (Carlos) MA
    2013-06-29 → cancelled 2013-10-17
  • CACERES-RODRIGUEZ, ERNESTO PR
    2015-07-03 → cancelled 2015-07-07
  • CACERES RODRIGUEZ, ERNESTO PR
    2025-06-06 active
← Back to KP4EC License history →