Here is one of several 10Vs in Warrick County. They test the sirens every Saturday at 1PM, but unsurprisingly, I had to call them up to remind them as they always forget. This 10V is located at the Ohio Township Fire Department, just north of Newburgh. I've tried recording this same siren a year ago, but it failed due to some radio issue, but since then, they've fixed it and it sounds great.