my reciever is located upstairs, and my home theater is downstairs, i was having problems with the uhf as well, but i just some standard coax to reloacate the uhf antenna downstairs to the top of my projector screen where it works well now. i think because i coudlnt get it straight up and down, and it was surrounded by a bunch of cables in teh cabinet upstairs, i wasnt getting very good reception.
anyone know if you can plug an ir repeater into the comm port on the back? i have a ir repeater for the theater and it would be super handy if i could just run a cord from my powered ir distribution block to the reciever. i know it works with some of my other gear, for example my a/v amp, with works well witht he 12v input.