Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NP4JJ callsign genealogy
Currently held by ORTIZ LUNA, JULIAN 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 NP4JJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NP4JJ.
No current licensee on record previously held this callsign.