Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JK callsign genealogy
Currently held by DEL VALLE MONTANEZ, JORGE D
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 KP4JK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KP4JK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KP4JK, oldest first.
- AGUILERA SR, HERIBERTO KS1989-10-10 → cancelled 2001-10-11
- DEL VALLE MONTANEZ, JORGE D PR2022-09-27 active