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

KP4JP callsign genealogy

Currently held by PEREZ, JOHNNY W

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 KP4JP's current licensee, walking backwards.

  1. KP4ZOcancelled· A
    PEREZ, JOAQUINPRgranted 2009-06-02cancelled 2009-09-22

Successor callsigns

Callsigns held now by people who previously held KP4JP.

  1. KP4IZexpired· A
    PEREZ, JOHNNY WPRgranted 2006-04-11cancelled 2018-04-12
  2. KP4IZcancelled· A
    PEREZ, JOHNNY WPRgranted 2005-02-08cancelled 2006-01-10
  3. WP4Qexpired· E
    SANTANA RODRIGUEZ, AGUSTINPRgranted 2001-02-21cancelled 2013-05-22

All historical holders

Every license row we've seen with the callsign KP4JP, oldest first.

  • PEREZ, JOHNNY W PR
    2004-11-23 → cancelled 2005-02-08
  • PEREZ, JOHNNY W PR
    2006-01-10 → cancelled 2006-04-11
  • PEREZ, JOAQUIN PR
    2019-12-19 active
← Back to KP4JP License history →