Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO9O callsign genealogy
Currently held by BURGESS, ROBERT
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 KO9O's current licensee, walking backwards.
- Brewster, Steven WINgranted 2022-11-08cancelled 2024-03-01
Successor callsigns
Callsigns held now by people who previously held KO9O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO9O, oldest first.
- BURGESS, ROBERT MN2011-11-16 → cancelled 2024-02-13
- Brewster, Steven W IN2024-03-01 active