Above the Roof install a Antenna Craft Y5713 antenna aimed at about 235 degree magnetic compass direction for reception of WABC 7 ABC to the south west with the front of the antenna and WTNH 10 ABC with/through the back of the antenna.
Install a Antennas Direct Clear Stream 4 CS4 antenna with the reflector screens removed , aimed at about 25 degree magnetic compass direction for reception of the group of Tv stations to the , north , north east , east.
And WCBS CBS to the south.
With the reflector screens removed from the CS4 the antenna will receive at the front of the antenna and back of the antenna.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Connect the Y5713 antenna and the CS4 antenna together with a UVSJ.
The Y5713 will connect to the VHF connection of the UVSJ.
The CS4 will connect to the UHF connection of the UVSJ.
The third connection of the UVSJ will connect to a Antennas Direct CPA-19 preamp.
Type the letters ->uvsj <- in the
http://www.solidsignal.com search box.
____________________________________________________________
For 1 Tv connection use no splitter.
For 2 Tv's connected use a , HFS-2D , 2 way splitter.
For 3 Tv's connected use a , HFS-3D , 3 way splitter.
Buy the HFS splitters at ,
http://www.hollandelectronics.com , or ,
http://www.solidsignal.com.
_____________________________________________________________
Install the antennas above the roof in such a manner that the roof or house is not blocking reception of the directions , north , north west , east , south.
Here are some above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://antennacraft.net.
___________________________________________________________
It looks like WCBS CBS is transmitting on UHF channel 33.
http://en.wikipedia.org/wiki/WCBS-TV.
___________________________________________________
As always , trees and tree leaves do a real fine job of reducing or blocking reception and so do buildings and other obstructions including your own house.
It is best to install antennas at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own house.
The Tv/s Must Channel Scan for the Broadcast Tv Channels , sometimes named the 'Air Channels' or 'Antenna Channels' in the Tv setup menu because the Tv transmissions travel through the air from the transmitting antenna to the receiving antenna.
DO NOT channel scan for cable tv channels.
_______________________________________
Digital Broadcast Tv tuners can develop , Digital Glitches , that are not cleared out with a simple channel scan.
I recommend do a Double Rescan.
http://www.dtv.gov/rescan.html.