This signal amplifier has a unique built-in 3G/4G-blocking filter, with the 3G and 4G-signals from mobile phones are blocked in order to now and in the future to ensure optimum reception and minimum interference.
You increase digital terrestrial or cable signals up to 20 dB (variable gain).
In addition, a bad picture and audio quality, caused by long cable and/or several TV/audio sets is prevented.
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