hello: i have switched over to dishnetwork with 2 811's and 1 322, my question is i hook up the ota cable coming in from outside with the ota antenna that voom gave me, but on the 811 i have did several channel scans for the local channels to be picked up with the ota, but it scans but it cant find no ota channels, what am i doing wrong? this is my first time with the 811 and dishnetwork, thanks, shaun