Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9J callsign genealogy
Currently held by Gawthorp, Jerome 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 KC9J's current licensee, walking backwards.
- MINNICH, JEFFREY WOHgranted 2017-08-22cancelled 2019-10-01
Successor callsigns
Callsigns held now by people who previously held KC9J.
- Sluz, Steve EPAgranted 2019-10-21
All historical holders
Every license row we've seen with the callsign KC9J, oldest first.
- Gawthorp, Jerome W IL2008-08-22 → cancelled 2017-09-09
- MINNICH, JEFFREY W OH2019-10-01 active