Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4D callsign genealogy
Currently held by Kuntz, John I
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 KF4D's current licensee, walking backwards.
- Kuntz, John IWIgranted 2017-12-16cancelled 2020-01-31
Successor callsigns
Callsigns held now by people who previously held KF4D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4D, oldest first.
- VINCENT, RONALD J MS2013-05-10 → cancelled 2018-01-12
- Kuntz, John I VA2020-01-31 active