I am completely new and have heard about FTA channels available that I can get in the US. I found myself a receiver and a Directv 18" round dish from a flea market. The receiver is in working condition and the the dish has a dual lnb mounted on it. I am located facing south and am unable to get any sats or quality on my receiver. Is that the lnb is not working. I have tried every damn location in the sky and dont have any encouragement to continue. HELP !!