Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4JRR callsign genealogy
Currently held by REYES DIAZ, JOSE R
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 KP4JRR's current licensee, walking backwards.
- REYES DIAZ, JOSE RPRgranted 2016-02-09cancelled 2016-09-03
Successor callsigns
Callsigns held now by people who previously held KP4JRR.
- REYES DIAZ, JOSE RPRgranted 2016-02-09cancelled 2016-09-03
All historical holders
Every license row we've seen with the callsign KP4JRR, oldest first.
- REYES DIAZ, JOSE R PR2013-01-18 → cancelled 2016-02-09
- REYES DIAZ, JOSE R PR2016-09-03 active