Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9BBQ callsign genealogy
Currently held by RIGDON, WILLIAM 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 KA9BBQ's current licensee, walking backwards.
- Steffen, Matthew LILgranted 2014-05-29cancelled 2014-08-29
Successor callsigns
Callsigns held now by people who previously held KA9BBQ.
- Steffen, Matthew LILgranted 2017-04-25
All historical holders
Every license row we've seen with the callsign KA9BBQ, oldest first.
- RIGDON, WILLIAM E WI1996-12-16 → cancelled 2008-12-17
- Steffen, Matthew L IL2014-08-29 → cancelled 2017-04-25