Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KP4JAF callsign genealogy
Currently held by FELICIANO MARTINEZ, JUAN A
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 KP4JAF's current licensee, walking backwards.
- FELICIANO MARTINEZ, JUAN APRgranted 2012-06-20cancelled 2012-12-21
Successor callsigns
Callsigns held now by people who previously held KP4JAF.
No current licensee on record previously held this callsign.