To be honest, I don't know a lot about Sentry sirens. This find was a complete accident. I saw it in a news broadcast in Center Hill Dam (north Dekalb County, TN) from 2013 on News Channel 5 (WTVF). Can someone tell me whether this is a 3v8h, or short horned 7v8? Since I am adding it to my recent siren map, (which you should totally check out!), I want it to be correct.
Latitude, Longitude (I couldn't find an address): 36.099504, -85.832004