Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9IA callsign genealogy
Currently held by Hillenbrand, Gary F
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 AC9IA's current licensee, walking backwards.
- Hillenbrand, Gary FINgranted 2008-09-04cancelled 2014-04-30
Successor callsigns
Callsigns held now by people who previously held AC9IA.
No current licensee on record previously held this callsign.