Hello, here in Columbus we have been without channel 10 for more than 3 weeks now, I use an OTA antenna and I screw it into the coax thingy input on the back of the TV. Everything works fine except the sound has to come through the TV speakers and I want it to come through my home theatre. I have a newer modern Yamaha receiver BUT I do not see a "coax" input to screw the OTA antenna into. Lots of hdmi, ect ect but I don't see a coax thingy. How do I make the OTA antenna go through my receiver so I can have better sound?