Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KI4OZ callsign genealogy
Currently held by JONES, JAMES S
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 KI4OZ's current licensee, walking backwards.
- Washburn, FritzTXgranted 2016-03-02cancelled 2016-08-05
Successor callsigns
Callsigns held now by people who previously held KI4OZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI4OZ, oldest first.
- JONES, JAMES S FL2004-01-14 → cancelled 2016-04-13
- Washburn, Fritz TX2026-08-11 active