Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4RRM callsign genealogy
Currently held by MORALES VELEZ, RAUL 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 KP4RRM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4RRM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4RRM, oldest first.
- RODRIGUEZ, ROBERTO PR1999-03-29 → cancelled 1999-11-18
- MORALES VELEZ, RAUL R PR2018-03-16 active