Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4YNM callsign genealogy
Currently held by MANGUAL RIVERA, NELSON
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 KP4YNM's current licensee, walking backwards.
- MANGUAL RIVERA, NELSONPRgranted 2022-04-18cancelled 2022-05-06
Successor callsigns
Callsigns held now by people who previously held KP4YNM.
No current licensee on record previously held this callsign.