Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4CJ callsign genealogy
Currently held by PAZ VIEVA, RAFAEL
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 WP4CJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WP4CJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4CJ, oldest first.
- PAZ VIEVA, RAFAEL PR1992-06-16 → cancelled 2004-06-17
- FUENTES, WILLIAM PR2026-03-03 active