Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JX callsign genealogy
Currently held by DEREN SR, MATTHEW 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 K4JX's current licensee, walking backwards.
- Sessler, John DTXgranted 2005-12-21cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held K4JX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JX, oldest first.
- DEREN SR, MATTHEW J NC1996-05-13 → cancelled 2003-09-12
- Sessler, John D TX2017-06-06 active