Because of the Strong Tv station/channel.
I recommend use RG-6 Quadshield coax.
And ground the RG-6 Quadshied coax with a ground block.
Example of ground block , GB-8100 at
http://www.solidsignal .com.
I also recommend grounding the antenna mount , use #8 or #10 solid copper ground wire.
Connect to electric service ground. Different types clamps for grounding are available at Home Depot and Lowe's and etc. are available.