Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9AS callsign genealogy
Currently held by Brendemuehl, Jay P
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 AC9AS's current licensee, walking backwards.
- Brendemuehl, Jay PWIgranted 2014-11-05cancelled 2023-02-28
Successor callsigns
Callsigns held now by people who previously held AC9AS.
- Burch, Lawrence GILgranted 2011-12-28cancelled 2023-12-29
All historical holders
Every license row we've seen with the callsign AC9AS, oldest first.
- Burch, Lawrence G IL2011-11-18 → cancelled 2011-12-28
- Brendemuehl, Jay P WI2023-02-28 active