Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC9OO callsign genealogy
Currently held by Sobkowiak Sr, Eddy 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 AC9OO's current licensee, walking backwards.
- Sobkowiak Sr, Eddy FILgranted 2011-10-17cancelled 2016-05-23
Successor callsigns
Callsigns held now by people who previously held AC9OO.
No current licensee on record previously held this callsign.