The adjustable gain is excellent, the filter is not very effective. We have a relatively strong signal, but this year cell tower interference has increased. A separate filter was able to reduce interference (filtering signals above 700MHz), but in combination with splitters, splices, etc., the signal attenuation was too strong. The Antop amp/filter alone didn't work that well either. The internal filter wasn't enough, and the amplifier simply increased both the noise and the signal. Adding a built-in filter at the antenna input, then an antop amp and then splitters solved the problem. With a gain of about 60% or so,
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