Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4ROH callsign genealogy
Currently held by ORTIZ, ROBERTO
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 KP4ROH's current licensee, walking backwards.
- ORTIZ, ROBERTOFLgranted 2018-12-04cancelled 2018-12-22
Successor callsigns
Callsigns held now by people who previously held KP4ROH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4ROH, oldest first.
- ORTIZ, ROBERTO PR1999-06-10 → cancelled 2011-06-11
- ORTIZ, ROBERTO PR2018-12-22 active