Hamilton Township Fire is dispatched by Columbus Fire and uses CFD talkgroups (there are a couple of old talkgroups from when they were dispatched separately, but I don't think they're used for anything but training now, if even that). Obetz PD is dispatched by the Sheriff's Office on the east talkgroups.
Fire Dispatch TG 272
Battalion 4 Fire Ground TG 592.
Hamilton Twp Alternate Ops TG 10544
Hamilton Twp Alternate Tac TG 10576
(They may use ANY Columbus Fire TG)
They may also operate (2nd due) on the Rickenbacker Air National Guard Base fire channels CLICK HERE
Obetz PD is dispatched on the East County TGs. Obetz PD unit numbers are 425-439
East Dispatch TG 11248
East Tactical TG 11312
(They may use any Sheriff TG)