Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4JAX callsign genealogy
Currently held by TUBB, CHARLES H
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 KC4JAX's current licensee, walking backwards.
- Couture Sr, John CFLgranted 2025-02-11cancelled 2025-06-14
Successor callsigns
Callsigns held now by people who previously held KC4JAX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4JAX, oldest first.
- TUBB, CHARLES H AL1989-04-25 → cancelled 2001-04-26
- Couture Sr, John C FL2025-06-14 active