I'm stumped and need suggestions on what else to try. I'm using the exact same radio, cable, antenna mount and antenna at my fathers house (10 miles away) as I have at my house. I've also programmed the radios exactly the same. I can hit two nearby repeaters from my house loud and clear. I can hear the repeater very clearly from my fathers house but CANNOT reach the repeater when trying to transmit. Here's the catch.... I can hit the repeater from his driveway from my mobile mounted in the truck. -Base station/Mobile connected to J Pole antenna mounted on roof. -Have tried changing to a different radio, cable and antenna to confirm no hardware issues. Is it possible the antenna on the roof is being blocked by something along the way or am I missing something???