Questions. What is the antenna being used now ? Does the antenna have a amplifier answer-->Yes or No . The spanish stations are transmitted from every direction. Are they interested in the spanish language stations ? The english language stations are transmitted from one direction. How many Tv's are connected? Is the place where they live wrapped with any kind or type of metal such as metal siding or stucko with metal stucko Wire ? The signals are Very Strong , an antenna amplifier can over load and be the cause of bad reception. . Read and understand this ,
http://forum.tvfool.com/showthread.php?t=695 ,
http://forum.tvfool.com/showthread.php?t=233