Is it just free view boxes that are affected?
i have a smart tv with freeview and wireless internet built in, fed from a triple boom high gain tv aerial with my end fed random wire less than a metre below it and along the path that the tv antenna points. No problems whatsoever. A friend though has tvi on 40m, he has a tv amp distribution box.
The universe is made up of Protons, Neutrons, Electrons but contains only one M0RON.