Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WP4YGM callsign genealogy
Currently held by MANGUAL RIVERA, GIL 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 WP4YGM's current licensee, walking backwards.
- MANGUAL RIVERA, GIL LPRgranted 2022-04-18cancelled 2022-05-06
Successor callsigns
Callsigns held now by people who previously held WP4YGM.
No current licensee on record previously held this callsign.