Satellite broadcast receiver

Abstract

Abstract PURPOSE:To facilitate easy control of direction of a satellite broadcast reception antenna by detecting the oscillation component at the side of an outdoor unit and detecting that the input level of satellite broadcast signal is higher than the fixed value. CONSTITUTION:The broadcasr signal received by a reception antenna 1 for satellite broadcast is led to an indoor unit 4 from an outdoor unit 2. When the AGC voltage generated by the preceding stage of a limiter amplifier 25 in the unit 4 exceeds a fixed level, an oscillator 36 starts oscillation by the output of a comparator 34. Then the rectified 37 AC power supply voltage is mixed 39 with the oscillation component of the oscillator 36 and supplied to the unit 2 through a coaxial cable 3. The oscillation component passes through an LPF19 and is delivered in the form of sounds through a speaker 41 or an earphone connected to the outside via an earphone terminal 40 or displayed in the form of light by an LED of a display circuit 18. Then it is reported that the input level of the satellite broadcase is higher than the fixed value.

Inventors

• 👤 Tadaaki Kobayashi
• 👤 小林　忠昭

Bibliographic Details