Aim the antenna at about 320 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html. The tvfool radar map was resolved to street level only. At street level only , Yes the digital broadcast tv transmissions are strong enough to be split two ways. The ANT751R antenna is for reception of channels 7 thru 69 and not channels 2 thru 6. WLBZ 2 NBC is showing in the tvfool real channel list as transmitting on digital channel 2. That said the channel 2 transmission is strong and if received by one tv should received by the other tv. And that said , I would install a Winegard HD7000R All Channel antenna. All channels are , VHF low 2 thru 6 , VHF high 7 thru 13 and UHF 14 thru 69. However before changing the antenna , make sure the tv is scanning for the Digital Broadcast Tv Channels sometimes called 'Air Channels' because the tv transmissions travel through the air from the transmitting antenna to the receiving antenna. Do Not scan for cable tv channels. Also check all connections.