Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4QM callsign genealogy
Currently held by Dudzic, Roy T
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 KY4QM's current licensee, walking backwards.
- Dudzic, Roy TSCgranted 2022-06-15cancelled 2022-07-26
Successor callsigns
Callsigns held now by people who previously held KY4QM.
No current licensee on record previously held this callsign.