Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4JEF callsign genealogy
Currently held by Weiss, Dennis J
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 KK4JEF's current licensee, walking backwards.
- Focke, Jill EFLgranted 2022-02-11cancelled 2024-06-11
Successor callsigns
Callsigns held now by people who previously held KK4JEF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4JEF, oldest first.
- Weiss, Dennis J OH2012-05-10 → cancelled 2024-05-11
- Focke, Jill E FL2024-06-11 active