Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4AAL callsign genealogy
Currently held by VALERIO, NELSON R
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 WP4AAL's current licensee, walking backwards.
- Valerio, Nelson RPRgranted 2020-10-26cancelled 2020-11-28
Successor callsigns
Callsigns held now by people who previously held WP4AAL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4AAL, oldest first.
- VALERIO, NELSON R PR1995-03-16 → cancelled 2007-03-17
- Valerio, Nelson R PR2020-11-28 active