Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4W callsign genealogy
Currently held by ZAYAS, ANDRES
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 WP4W's current licensee, walking backwards.
- ECHEVARRIA PADILLA, DAVID APRgranted 2026-01-06
Successor callsigns
Callsigns held now by people who previously held WP4W.
- ECHEVARRIA PADILLA, DAVID APRgranted 2026-01-06
All historical holders
Every license row we've seen with the callsign WP4W, oldest first.
- ZAYAS, ANDRES PR2010-12-01 → cancelled 2023-01-18
- ECHEVARRIA PADILLA, DAVID A PR2023-02-04 → cancelled 2026-01-06