Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4SW callsign genealogy
Currently held by VELLON PEREZ, LUIS 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 WP4SW's current licensee, walking backwards.
- WEIR, STEVENPRgranted 2014-02-24cancelled 2019-03-15
Successor callsigns
Callsigns held now by people who previously held WP4SW.
- VELLON, LUIS AFLgranted 2016-11-15
All historical holders
Every license row we've seen with the callsign WP4SW, oldest first.
- VELLON PEREZ, LUIS A FL1999-04-21 → cancelled 2007-02-09
- WEIR, STEVEN PR2019-03-15 active