Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4LU callsign genealogy
Currently held by PEREZ, WILLSON
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 WP4LU's current licensee, walking backwards.
- Rivera-Martinez, LuisalejandraPRgranted 2018-06-12cancelled 2018-07-03
Successor callsigns
Callsigns held now by people who previously held WP4LU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4LU, oldest first.
- PEREZ, WILLSON PR1987-09-29 → cancelled 1999-09-30
- RIVERA MATINEZ, LUISALEJANDRA PR2018-07-03 active