Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9KEN callsign genealogy
Currently held by Bartel, Kenneth 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 K9KEN's current licensee, walking backwards.
- Bartel, Kenneth JWIgranted 2007-10-01cancelled 2008-03-11
Successor callsigns
Callsigns held now by people who previously held K9KEN.
- KOSKI, KENNETH JILgranted 2015-06-25
All historical holders
Every license row we've seen with the callsign K9KEN, oldest first.
- KOSKI, KENNETH J IL1998-01-07 → cancelled 2005-09-10
- Bartel, Kenneth J WI2017-12-29 active