| 摘要 |
PROBLEM TO BE SOLVED: To provide a satellite receiving system equipped with a satellite switcher wherein circuit design is facilitated and the number of parts is reduced. SOLUTION: A satellite switcher 1 for selecting received signals from two CS antennas 2a and 2b and transmitting any signal to a receiving terminal is formed by providing a shield case with two signal input terminals 16a and 16b and one signal output terminal 17. A relay 18 for switching input signals is provided inside, and a pulse signal blocking circuit 15 composed of the parallel circuit of a first choke coil L1 and a capacitor C1 is interposed between the input and output terminals. The signal output terminal 17 is provided with a second choke coil L2 for making a pulse signal pass and a third choke coil L3 for making a DC current pass and these choke coils are respectively connected to a pulse signal detecting circuit 19 and a constant voltage power source circuit 20.
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