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

KP4KJ callsign genealogy

Currently held by LOPEZ, 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 KP4KJ's current licensee, walking backwards.

  1. WP4KJcancelled· E
    LOPEZ, JUANPRgranted 2019-06-18cancelled 2021-04-20
  2. KP3KJcancelled· T
    Lopez-Garcia, Juan EPRgranted 2005-03-04cancelled 2009-09-12
  3. WP3ZUcancelled· T
    Lopez-Garcia, Juan EPRgranted 2004-03-03cancelled 2005-03-04

Successor callsigns

Callsigns held now by people who previously held KP4KJ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KP4KJ, oldest first.

  • TOSADO, BENEDICTO PR
    2004-07-27 → cancelled 2015-10-06
  • LOPEZ, JUAN PR
    2021-04-20 active
← Back to KP4KJ License history →