Abstract: In a high frequency component, a case made up of metal having a shape of frame for containing a board includes tabs and stoppers. During producing of the high frequency component, the board is inserted from an opening on a side on which the tabs are provided. Each of the tabs has a height in a direction perpendicular to an insertion direction of the board, which becomes lower toward upstream in the insertion direction. Each of the tabs has elasticity so as to return to its original state after being pushed toward an inner side surface of the case by a force applied from upstream side in the insertion direction. By this, the board can be easily inserted and fixed between the tabs and the stoppers in the case. This makes it possible to provide a printed board holding case to which a printed board can be easily inserted and sufficiently fixed.

Abstract: A satellite and terrestrial composite tuner includes a terrestrial broadcast tuner unit, a terrestrial broadcast demodulation unit, a satellite broadcast tuner unit, and a satellite broadcast demodulation unit. Since the satellite broadcast demodulation unit attains a power-saving mode to take an inactive state when a satellite broadcast is not received, power consumption is reduced. Further, when the satellite broadcast demodulation unit is in an inactive state, a total gain control unit suppresses increase in the total gain of the satellite broadcast tuner unit. As a result, radiation towards the terrestrial broadcast tuner unit caused by an I signal and Q signal amplified by AGC amplifiers can be suppressed.