Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4GL callsign genealogy
Currently held by ZAYAS ALVARADO, JOSE A
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 WP4GL's current licensee, walking backwards.
- Rosario-Torres, ManuelPRgranted 2018-07-10cancelled 2022-05-24
Successor callsigns
Callsigns held now by people who previously held WP4GL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4GL, oldest first.
- ZAYAS ALVARADO, JOSE A PR2007-02-28 → cancelled 2019-03-05
- Rosario-Torres, Manuel PR2022-05-24 active