The Winegard HD1080 is a UHF antenna first and a VHF high antenna second. The advertisement about the 'power' of the VHF high reception of the antenna is typical marketing ballyhoo. Look at the gain figures , the VHF high channels are negative numbers and the UHF channels are positive numbers ,
http://www.winegarddirect.com/viewit...080)&p=HD-1080. It's a tough call on which antenna , they both are very wide beam width antennas , I lean toward the HD1080 , start with aim in the middle between 23 and 133 degree magnetic compass. No preamp will be needed , the television transmissions are strong. If you are using the 10 foot pole on top of the roof to get the antenna higher then some obstruction then Ok. I think four or five foot above the highest part of the two story roof will be fine.