Hi I just acquired a Denon AVR 1804 HT receiver and hooked it up no problem (My 1st iteration for an Home Theater). I however have a question regarding the FM antenna coaxial connection in the back. I searched the forum but no luck. Can I use an adapter and feed in the CATV cable from my local cable TV broadcasting company? I know they carry radio signals as well. In my DENON owner manual, they only show 2 options on they schematics regarding the antenna: either the "temporary antenna" provided with the unit or a connection to an external antenna using a 75 Ohms coaxial cable. If it is OK to feed in the CATV cable, is there any protection device that should be use to protect my equipment (Surge protection for instance? What about the 75 Ohms cable specification?) Thank you. Any help appreciated.