Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KP4OR callsign genealogy
Currently held by SANTIAGO GONZALEZ, HECTOR 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 KP4OR's current licensee, walking backwards.
- RIOS ROSARIO, OSCARPRgranted 2013-11-18cancelled 2021-11-27
Successor callsigns
Callsigns held now by people who previously held KP4OR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4OR, oldest first.
- SANTIAGO GONZALEZ, HECTOR M PR1988-02-23 → cancelled 2000-02-24
- RIOS ROSARIO, OSCAR PR2021-11-27 active