Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4FSU callsign genealogy
Currently held by Garayua Montes, Jose L
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 WP4FSU's current licensee, walking backwards.
- Garayua Montes, Jose LPRgranted 2009-12-21cancelled 2011-12-29
Successor callsigns
Callsigns held now by people who previously held WP4FSU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WP4FSU, oldest first.
- GARAYUA MONTES, JOSE L PR1996-08-13 → cancelled 2008-08-14
- Garayua Montes, Jose L PR2022-11-15 active