[ADTech]

You're not going to get anything UHF from the south unless you catch a lucky reflection off the terrain in the opposite direction. VHF might do much better, though, since it diffracts more readily. You'll have to tilt up the aim of that antenna so it points at the visual horizon on that direction.

Aim the DB2 to the northwest, those UHF signals should be readily receivable with a small UHF antenna.

It's been my experience (numerous times) that, when you're backed right up against the base of a hill or mountain, there isn't any signal there despite the software's forecast.