We have a bathroom tv which until yesterday was working well using a USB powered tv amplifier sited under the bath. I share an aerial with the flat downstairs and they were complaining about their signal so they got an aerial guy up on the roof and discovered that the aerial pole had corroded and detached from the wall. He installed a completely new pole, aerial and splitter and their signal is now amazing. I now get pixelation on certain channels without the amp but with the amp attached the signal on all the channels is much worse/unusable. i can only assume that the reason the amp makes the sreveption worse is that it is over boosting the signal. The amplifier is 20db and doesn’t have a built in attenuator. Would it be worth trying an attenuator before the amp to see if I can find a happy balance? I think the underlying problem may be the quality of my cable run but it is a massive house so replacing it is non-trivial. The problem is not the amp, I have tested it and it works fine. Without the amp I get SS and SQ of 100 on BBC but an SQ of 20ish on ITV and C4.