Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JRF callsign genealogy
Currently held by RODRIGUEZ FONSECA, JAVIER 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 KP4JRF's current licensee, walking backwards.
- RODRIGUEZ, JAVIER JFLgranted 2019-04-19cancelled 2019-05-10
Successor callsigns
Callsigns held now by people who previously held KP4JRF.
No current licensee on record previously held this callsign.