Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4OEM callsign genealogy
Currently held by THOMASSON, MICHAEL 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 KY4OEM's current licensee, walking backwards.
- THOMASSON, MICHAEL EKYgranted 1998-11-05cancelled 2006-03-21
Successor callsigns
Callsigns held now by people who previously held KY4OEM.
No current licensee on record previously held this callsign.