do they boost the signal as mine is between 69% and 86% for quality and level.the booster i was looking at is Signal Amplifier for Cable TV With a Massive 30dB Gain.has anyone used one and what do they think.
I reccomend you don't use one, to much signal is just as bad as low signal. Your best bet is a signal attenuator 20db gain from B&Q £8.00, with this you can turn it up or down.