Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4X callsign genealogy
Currently held by FAGAN, DOUGLAS E
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 KJ4X's current licensee, walking backwards.
- Anderson, William JTNgranted 2008-07-25cancelled 2012-08-03
Successor callsigns
Callsigns held now by people who previously held KJ4X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4X, oldest first.
- FAGAN, DOUGLAS E SC2001-04-18 → cancelled 2010-07-15
- Anderson, William J TN2022-09-17 active