Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO9OK callsign genealogy
Currently held by Kavanaugh, Ann M
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 KO9OK's current licensee, walking backwards.
- Kavanaugh, Ann MINgranted 2011-11-23cancelled 2012-10-19
Successor callsigns
Callsigns held now by people who previously held KO9OK.
No current licensee on record previously held this callsign.