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

KP4AA callsign genealogy

Currently held by GUTIERREZ, CARLOS F

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 KP4AA's current licensee, walking backwards.

  1. KP3MMcancelled· E
    RAMIREZ, KENNETHPRgranted 2019-05-07cancelled 2020-12-29
  2. KP4XScancelled· E
    RAMIREZ, KENNETHPRgranted 2019-03-12cancelled 2019-05-07
  3. N4UKactive· E
    Vetter Jr, William EFLgranted 2021-04-02
  4. KK4CAMcancelled· E
    Vetter Jr, William EFLgranted 2021-03-16cancelled 2021-04-02

Successor callsigns

Callsigns held now by people who previously held KP4AA.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KP4AA, oldest first.

  • GUTIERREZ, CARLOS F PR
    2008-11-22 → cancelled 2020-12-10
  • RAMIREZ, KENNETH PR
    2020-12-29 active
← Back to KP4AA License history →