Is the HD7082P antenna installed??
Is the antenna aimed at about 103 degree magnetic compass??
Adjust the aim of the antenna for better reception of WNBC NBC.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Is the HD7082P in the attic or above the roof??
If the HD7082P antenna is in the attic is the HD7082P close to the other antenna??
Is the HD7082P connected to the other antenna??
Is the HD7082P antenna being used as a FM radio antenna also??
How many Tv's are connected??