I just added a Winegard YA 1713 to my array in the attic which includes a CM4228 and a CM 7777. I was in hopes that I would be able to lock on channels 7 and 9 which are 73 miles from my home. I can now get a lock but have occasional dropouts. I put the power supply in in the attic about 3 feet after the preamp because I assumed the power supply sent the signal down the line to the tv. Was I wrong? should I have put the power supply closer to the tv 40' away?