I need some help with setting up Prodelin 0179-189 with Chaparral feedhorn. Do you have to use a lnb that is meant for an offset dish or can you use standard Cband lnb. I am using a fixed mount and want just to recieve Nasa feed AMC-3. I am located at Latitude 41.142115 Longitude -85.179755 in northern Indiana. I can provide pictures of the mount,feedhorn,dish as it stands now. Please respond to stagam@adaptivemicro.com for this information. Thank You for your time.