Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4OAI callsign genealogy
Currently held by Maysville Mason County Emergency Operations Club
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 KO4OAI's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KO4OAI.
- KY4MMEactiveMaysville Mason County Emergency Operations ClubKYgranted 2021-03-30