Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4JMR callsign genealogy
Currently held by MILLAN RIVERA, JAVIER
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 KP4JMR's current licensee, walking backwards.
- MILLAN RIVERA, JAVIERPRgranted 2021-04-14cancelled 2021-05-04
Successor callsigns
Callsigns held now by people who previously held KP4JMR.
No current licensee on record previously held this callsign.