Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0JAX callsign genealogy
Currently held by Helwig, Brandon
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 KA0JAX's current licensee, walking backwards.
- Helwig, BrandonCOgranted 2025-04-19cancelled 2025-05-09
Successor callsigns
Callsigns held now by people who previously held KA0JAX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0JAX, oldest first.
- FRYE, GEORGE R IA1996-11-04 → cancelled 2008-11-05
- Helwig, Brandon CO2025-05-09 active