The Simplest 1 antenna solution (no A/B antenna switches or antenna rotator) to receive the following list of OTA = Over The Air , Digital Broadcast Tv stations/channels is install a Antennas Direct - Clear Stream 4 UHF Tv antenna aimed at about 260 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
These Digital Tv stations/channels in the Green reception zone are Very Strong Signal Strength.
WUNJ-DT REAL UHF Digital channel 29 , virtual number (x) PBS ,
http://en.wikipedia.org/wiki/UNC-TV.
WWAY-DT REAL UHF Digital channel 46 , virtual number (3.1-2) ABC and RTV.
http://en.wikipedia.org/wiki/WWAY.
WECT-DT REAL UHF Digital channel 44 , virtual number (6.1-2) NBC and Bounce.
http://en.wikipedia.org/wiki/WECT.
WSFX-TV REAL UHF Digital Tv channel 30 , virtual number (26.1-2) FOX and This Tv.
http://en.wikipedia.org/wiki/WSFX-TV.
WILM-LD REAL UHF Digital channel 40 , virtual number (10.1) CBS.
http://en.wikipedia.org/wiki/WILM-LD.
WPXU-DT REAL UHF Digital channel 34 , virtual number (35.1-2-3) ION and Qubo and ION Life.
http://en.wikipedia.org/wiki/WPXU-TV.
The reception is Very Strong at your location , I think that No preamplifier or distribution amplifier is required.
Connect the CS4 antenna to a simple common 4 way splitter.
The correct way to do the coax wiring and connections is a coax goes out to the Tv locations from each output of the 4 way splitter.
(Chaining splitters one after the other , one splitter connected to an other splitter connected to an other splitter connected to an other splitter , the signal strength before the end and at the end of the chain of splitters will be Very Weak.)
If the coax wiring is a chain of splitters.
I recommend - install New coax wiring so a coax goes out to each Tv location
from the single 4 way splitter.
I am thinking the RG59 coax has been in place for a long time.
I recommend 'clean up' the coax wiring , use RG6.
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As always , trees and tree leaves do a good job of , reflecting , reducing , blocking , Digital Tv reception and so do buildings and other obstructions including the roof and house building.
It is best to install the CS4 UHF antenna at a location that has the least amount to no amount of obstructions of any type or kind including the roof and house building.
On the pole is a good location.
Or if you can install the antenna above the roof with a good shot at the transmitters to the , west , and WPXU-DT ION to the east , that will be Ok.
Yes ION will be received through the back of the CS4 antenna , the Signal strength at your location is very strong.
If the Signal strengths at the ends of the long runs of coax to the Tv locations is a little weak , then a Channel Master CM3414 distribution amplifier can be used in place of the 4 way splitter.
However give the 4 way splitter a opportunity first.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com ,
http://www.channelmasterstore.com.