Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4SU callsign genealogy
Currently held by SUTTON, BENJAMIN 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 KF4SU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KF4SU.
- SUTTON, BENJAMIN WFLgranted 2025-07-08
All historical holders
Every license row we've seen with the callsign KF4SU, oldest first.
- CLOSSER, DAYTON C FL1998-12-01 → cancelled 2010-12-02
- SUTTON, BENJAMIN W FL2020-12-29 → cancelled 2025-07-08