OTA Newbie with some questions...

[Comptech]

http://www.mcmelectronics.com/product/EASY-UP-EZDM-166-39Z-/30-2510
Get one of these and use the foot that is already mounted. It will give you some height,

 

[OTA_otay!]

Here's the antenna I'm currently using: https://www.walmart.com/ip/GE-Compact-Outdoor-Antenna-Receiving-Only-30741/48988771

And on Amazon: Amazon product ASIN B01EIVDUVC

It lists the pole for the j-mount as 15/16" width