For reception of ,
CFTO-TV Analog Channel 21 CTV ONE.
CIII-DT Digital channel 7 GTN Global.
CHCH-DT Digital channel 23 IND.
CKVR-DT Digital channel 10 CTV TWO.
Install on the tower , a Winegard HD7696P antenna aimed at about 220 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
No preamplifier is required.
For 1 Tv connection use no splitter.
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Here are places to buy antennas and etc. ,
http://www.saveandreplay.com ,
http://www.trentondistributors.com ,
http://www.amazon.ca ,
http://www.solidsignal.com ,
http://www.winegarddirect.com.
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The Tv should be a Tv that receives both the Digital Broadcast Tv Channels and Analog Broadcast Tv Channels.
Replace All of the Antenna and inside wiring with New RG-6 coax wiring.
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As always , trees and tree leaves do a real fine job of reducing or blocking Tv reception and so do buildings and other obstructions.
It is best to install the antenna at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception.
At your location that is , west and south.