The Main Groups of Tv stations are to the , North/North West and North East.
Install the antenna Above the Peak of the Roof in such a manner that the roof and building are not , obstructing , impeding , blocking , reception in the directions of , North West , North . North East.
Aim the antenna at about 30 degree magnetic compass direction.
The Front broad flat surface of the antenna.
Here is how to aim antennas ,
www.kyes.com/antenna/pointing/pointing.html
Use a Real and Actual magnetic compass to aim antenna.
The about 30 degree magnetic compass aim direction is a , in between aim direction of the Tv stations that are to the , North West , North , North East.
Most Digital Tv's have a Signal Strength Meter and some Digital Tv's also have a Signal Quality Meter.
As always , the starting antenna aim direction is the ---> starting antenna aim direction.
The antenna aim can be adjusted for best reception.
--------
Test reception by having only 1 Tv connected ,
No splitters.
---------
Digital Tv tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.
To clear the tuner , do a Double Rescan.
www.wchstv.com/DoubleReScanAlert.pdf
---------
As always , trees and tree leaves , plants and plant leaves , have a Negative Effect on broadcast Tv reception
Absorbing , Blocking , Reception
Multi-Path Reflecting signals bouncing around
In the directions of reception , and so do buildings and other obstructions including your own roof and house in the directions of reception.
The Best Pratice is 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.