Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT4DUX callsign genealogy
Currently held by Thornton, Ronald 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 KT4DUX's current licensee, walking backwards.
- Thornton, Ronald KTNgranted 2014-05-06cancelled 2018-02-06
Successor callsigns
Callsigns held now by people who previously held KT4DUX.
No current licensee on record previously held this callsign.