Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4JDC callsign genealogy
Currently held by Carlson, Jeffrey D
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 KY4JDC's current licensee, walking backwards.
- Carlson, Jeffrey DKYgranted 2023-03-16cancelled 2023-04-08
Successor callsigns
Callsigns held now by people who previously held KY4JDC.
No current licensee on record previously held this callsign.