Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JR callsign genealogy
Currently held by SUAREZ, JOSE M
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 KP4JR's current licensee, walking backwards.
- ROSARIO-FERNANDEZ, JOSELITOPRgranted 2009-08-24cancelled 2018-02-06
Successor callsigns
Callsigns held now by people who previously held KP4JR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4JR, oldest first.
- SUAREZ, JOSE M PR2005-09-20 → cancelled 2017-12-09
- Rosario, JOSELITO PA2018-02-06 active