Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4PC callsign genealogy
Currently held by COLON SANTIAGO, RAUL
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 KP4PC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4PC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4PC, oldest first.
- COLON SANTIAGO, RAUL PR1988-05-10 → cancelled 2000-05-11
- CORDERO JR, FRANCISCO PR2024-03-16 active