Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TC callsign genealogy
Currently held by CALKINS, 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 K4TC's current licensee, walking backwards.
- CALKINS, RONALD WFLgranted 2017-09-13cancelled 2026-07-07
Successor callsigns
Callsigns held now by people who previously held K4TC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TC, oldest first.
- BURKHEAD, HARRY M TN2014-03-29 → cancelled 2026-06-16
- CALKINS, RONALD W FL2026-07-07 active