Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG1O callsign genealogy
Currently held by Crawford, Eldon 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 AG1O's current licensee, walking backwards.
- Bretthorst, Danny JGAgranted 2023-02-14cancelled 2026-03-24
Successor callsigns
Callsigns held now by people who previously held AG1O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AG1O, oldest first.
- Crawford, Eldon E RI2014-01-02 → cancelled 2024-02-05
- Bretthorst, Danny J GA2026-03-24 active