Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KP4JJG callsign genealogy
Currently held by GRAJALES CRUZ, JOSE J
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 KP4JJG's current licensee, walking backwards.
- GRAJALES CRUZ, JOSE JPRgranted 2015-10-26cancelled 2015-11-14
Successor callsigns
Callsigns held now by people who previously held KP4JJG.
No current licensee on record previously held this callsign.