Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4YN callsign genealogy
Currently held by TOVAL, HUMBERTO J
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 WP4YN's current licensee, walking backwards.
- TOVAL, HUMBERTO JPRgranted 2001-08-07cancelled 2006-02-04
Successor callsigns
Callsigns held now by people who previously held WP4YN.
- TOVAL, HUMBERTO JPRgranted 2001-08-07cancelled 2006-02-04
All historical holders
Every license row we've seen with the callsign WP4YN, oldest first.
- TOVAL, HUMBERTO J TX2001-08-07 → cancelled 2001-08-09
- TOVAL, HUMBERTO J PR2026-05-22 active