Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0JXJ callsign genealogy
Currently held by O'neill, Jeffrey 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 K0JXJ's current licensee, walking backwards.
- O'neill, Jeffrey JCOgranted 2016-07-13cancelled 2016-09-27
Successor callsigns
Callsigns held now by people who previously held K0JXJ.
No current licensee on record previously held this callsign.