Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9EOC callsign genealogy
Currently held by Hamilton County Emergency Communications Group
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 K9EOC's current licensee, walking backwards.
- KD9YIBcancelledHamilton County Emergency Communications GroupINgranted 2023-05-18cancelled 2023-08-15
Successor callsigns
Callsigns held now by people who previously held K9EOC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9EOC, oldest first.
- HANDKE, RONALD G IL2011-09-13 → cancelled 2023-07-27
- Hamilton County Emergency Communications Group IN2023-08-15 active