Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ6UMX callsign genealogy
Currently held by Duchi III, Anthony L
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 KJ6UMX's current licensee, walking backwards.
- Duchi III, Anthony LCAgranted 2024-10-02cancelled 2024-11-05
Successor callsigns
Callsigns held now by people who previously held KJ6UMX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ6UMX, oldest first.
- Duchi III, Anthony L CA2012-02-23 → cancelled 2024-02-24
- Duchi III, Anthony L CA2024-11-05 active