Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4OO callsign genealogy
Currently held by Thomas, Ronald W
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 KY4OO's current licensee, walking backwards.
- Thomas, Ronald WTNgranted 2021-10-08cancelled 2022-04-13
Successor callsigns
Callsigns held now by people who previously held KY4OO.
No current licensee on record previously held this callsign.