Digital terrestrial TV broadcast signal receiving system and digital terrestrial TV broadcast signal receiver

摘要

In a digital terrestrial TV broadcast signal receiving system comprised of a multi-directional antenna and a TV broadcast signal receiver which are connected by a cable, even when a level of a TV broadcast signal is lower and S/N is lower, signal receiving condition is made stable with no relation to locations of the multi-directional antenna and the TV broadcast signal receiver, a length of the cable, and so on. The multi-directional antenna has a variable amplifier which can be controlled a gain from the TV broadcast signal receiver and amplifies a received TV broadcast signal. The TV broadcast signal receiver detects a level of a TV broadcast signal outputted from the multi-directional antenna, and controls the gain of the variable amplifier corresponding to the detected level of the TV broadcast signal.