Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS9I callsign genealogy
Currently held by DUDEK, KEVIN 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 KS9I's current licensee, walking backwards.
- DUDEK, KEVIN JILgranted 2013-08-07cancelled 2016-06-14
Successor callsigns
Callsigns held now by people who previously held KS9I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS9I, oldest first.
- SARTAIN, KENNETH W IL2004-03-09 → cancelled 2016-05-25
- DUDEK, KEVIN J IL2026-03-18 active