Any strong out of band broadcast (including FM radio) signals?
Any 4G LTE signals/towers nearby or in the signal path?
Have you checked with a spectrum analyser to see what other RF sources are present?
Any paging or 2-way radio signals?
Have you fitted band pass filters for the channels in use?
Any electrical impulse noise in the building or nearby?
Is the timing of the pixelation random, or at particular hours?
Bookmarks