At magnetic compass 56 , is channel 6. Your location needs a antenna that will receive channel 6 and all the other channels and that antenna is the Winegard HD7084P. Mounted above the chimney level , no preamplifier will be needed with the connection of one or two tv's. You can find all types of antenna mounts and more at ,
http://www.solidsignal.com , and
http://www.starkelectronic.com , and
http://www.amazon.com