Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4BUT callsign genealogy
Currently held by Butkus, Brian 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 KY4BUT's current licensee, walking backwards.
- Butkus, Brian EILgranted 2023-05-31cancelled 2024-01-26
Successor callsigns
Callsigns held now by people who previously held KY4BUT.
No current licensee on record previously held this callsign.