Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4JBC callsign genealogy
Currently held by Birriel, Jonatan
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 WP4JBC's current licensee, walking backwards.
- Birriel, JonatanPRgranted 2021-01-28cancelled 2021-02-17
Successor callsigns
Callsigns held now by people who previously held WP4JBC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4JBC, oldest first.
- NIEVES VILLANEUVA, EDWIN PR2000-09-08 → cancelled 2012-05-30
- Birriel, Jonatan PR2021-02-17 active