I had bad cable TV reception and internet service and couldn't figure out why. I decided to check the main cable line where it starts and noticed that the line goes to one splitter and then from there to another splitter. I'm pretty sure it weakens the signal badly, I'm no cable expert but I think whoever installed it that way just wanted to get it over with as quickly as possible and didn't care about good signal quality. I replaced those splitters with this amplifier (see before and after photos) so the signal is stronger now, not weaker. My internet and cable are working great now!
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