Exactly what Tower Guy said, but a bit more explanation: Aim the broadband antenna ( the Winegard HD-7694P or the AntennaCraft HBU-33) at 170 degrees as measured by your compass: aim the AntennaCraft Y-5-7-13 at 270 degrees, and use a channel 10 Jointenna to combine the two antennas into one downlead. Be sure that the antennas are separated on the mast by at least 4', and you'll be fine. Jointennas are available very cheaply on Amazon.com:
http://www.amazon.com/Channel-Master...3074182&sr=8-3
Here are links to the recommended antennas:
http://www.winegard.com/kbase/upload/HD7694P.pdf
http://www.antennacraft.net/pdfs/HBU33.pdf
http://www.antennacraft.net/pdfs/Y5-7-13.pdf
And here is a good antenna installation guide:
http://manuals.solidsignal.com/AntInstallGuide.pdf