Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9J callsign genealogy
Currently held by Winski, Aaron T
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 KD9J's current licensee, walking backwards.
- Winski, Aaron TILgranted 2000-09-27cancelled 2006-01-07
Successor callsigns
Callsigns held now by people who previously held KD9J.
- GERARDEN, JAYMDgranted 2018-03-06
All historical holders
Every license row we've seen with the callsign KD9J, oldest first.
- Winski, Aaron T IL2025-11-29 active
- GERARDEN, JAY B— → cancelled 1998-03-24