Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4PZ callsign genealogy
Currently held by VALENTIN, ALEX S
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 WP4PZ's current licensee, walking backwards.
- Valentin-Rivera, Alex SPRgranted 2018-03-28cancelled 2018-05-12
Successor callsigns
Callsigns held now by people who previously held WP4PZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4PZ, oldest first.
- DELGADO PEREZ, HILDA I PR1988-07-05 → cancelled 2000-07-06
- VALENTIN, ALEX S PR2018-05-12 active