Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4WO callsign genealogy
Currently held by Wagster, Michael K
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 AI4WO's current licensee, walking backwards.
- Johnson, Bret DKYgranted 2018-01-03cancelled 2018-08-31
Successor callsigns
Callsigns held now by people who previously held AI4WO.
- Wagster, Michael KFLgranted 2007-05-11cancelled 2019-05-14
All historical holders
Every license row we've seen with the callsign AI4WO, oldest first.
- Wagster, Michael K FL2002-11-27 → cancelled 2007-05-11
- Johnson, Bret D KY2018-08-31 active