Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JFD callsign genealogy
Currently held by Dotson, John F
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 K4JFD's current licensee, walking backwards.
- Dotson, John FTNgranted 2025-11-21cancelled 2026-04-28
Successor callsigns
Callsigns held now by people who previously held K4JFD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JFD, oldest first.
- DILLON, JOHN F KY2010-05-20 → cancelled 2022-08-16
- Dotson, John F TN2026-04-28 active