Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4JJR callsign genealogy
Currently held by ROSADO, JESUS 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 KP4JJR's current licensee, walking backwards.
- ROSADO, JESUS JPRgranted 2018-07-16cancelled 2018-08-28
Successor callsigns
Callsigns held now by people who previously held KP4JJR.
No current licensee on record previously held this callsign.