Install a Antenna Craft Y10713 , VHF high band channels 7 thru 13 antenna.
Aim the antenna at about 105 degree magnetic compass direction.
Here is how to aim antenna ,
www.kyes.com/antenna/pointing/pointing.html
Use a Real and Actual magnetic compass to aim antenna.
Combine the UHF channels 14 thru 51 , DB8 antenna and the VHF high band channels 7 thru 13 antenna with a , EU385CF-1s , VHF/UHF diplexer combiner.
Here are some places to buy antennas and etc. .
www.solidsignal.com
www.amazon.com
www.antennacraft.net