Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0JS callsign genealogy
Currently held by WIOREK, EDWARD A
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 KF0JS's current licensee, walking backwards.
- Slama, John DMNgranted 2023-03-24cancelled 2024-04-19
Successor callsigns
Callsigns held now by people who previously held KF0JS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF0JS, oldest first.
- WIOREK, EDWARD A MN2000-02-29 → cancelled 2012-04-18
- Slama, John D MN2024-04-19 active