Not specifically related to Cincinnati/Hamilton County, but still considered by some to be the "Cincinnati area"...
I was looking at random rural fire departments today and found what appears to be a Loudon Communications Master Blaster in Patriot, Indiana. At first I thought it was a T-121, but then I noticed it only had 4 horns. Unfortunately, it's an hour away from me, so I don't see myself getting pictures of it anytime soon, but it's still an unusual find.
Google:
http://goo.gl/maps/0VNCn
Bing:
http://binged.it/XSqq1P
Also, which "model x" is that on top of the fire station?