Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4RW callsign genealogy
Currently held by RIVERA DELGADO, ELISEO
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 WP4RW's current licensee, walking backwards.
- Rivera-Delgado, EliseoPRgranted 2002-02-06cancelled 2002-06-11
Successor callsigns
Callsigns held now by people who previously held WP4RW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4RW, oldest first.
- RIVERA DELGADO, ELISEO PR1988-10-25 → cancelled 2000-10-26
- RIVERA DELGADO, ELISEO PR2022-03-24 active