uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

WP4J callsign genealogy

Currently held by FLORES, 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 WP4J's current licensee, walking backwards.

  1. KP4KCcancelled
    Potin DX And Contest GroupPRgranted 2021-10-02cancelled 2023-09-15
  2. WP4RUPcancelled
    Potin DX And Contest GroupPRgranted 2021-05-26cancelled 2021-10-02

Successor callsigns

Callsigns held now by people who previously held WP4J.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WP4J, oldest first.

  • FLORES, CARLOS GA
    2007-01-26 → cancelled 2019-02-12
  • GONZALEZ, MANUEL PR
    2019-02-20 active
← Back to WP4J License history →