Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9BJA callsign genealogy
Currently held by King, Michael E
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 KC9BJA's current licensee, walking backwards.
- Adelsberger, Buddy JILgranted 2018-04-04cancelled 2018-05-04
Successor callsigns
Callsigns held now by people who previously held KC9BJA.
- Adelsberger, Buddy JILgranted 2019-09-27
All historical holders
Every license row we've seen with the callsign KC9BJA, oldest first.
- King, Michael E IN2002-03-26 → cancelled 2014-03-27
- Adelsberger, Buddy J IL2018-05-04 → cancelled 2019-09-27