Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR9O callsign genealogy
Currently held by MC KINNON, THEODORE 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 KR9O's current licensee, walking backwards.
- DARR, COREY BILgranted 2010-04-06cancelled 2010-12-17
Successor callsigns
Callsigns held now by people who previously held KR9O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR9O, oldest first.
- MC KINNON, THEODORE E TX1997-05-21 → cancelled 2009-05-22
- DARR, COREY B MO2020-10-20 active