| 摘要 |
PROBLEM TO BE SOLVED: To obtain a changeover device for a satellite-mount antenna that can switch antennas even on the occurrence of a fault in a C type switch due to a broken wire of coils L1, L2. SOLUTION: The changeover device consists of a 1st switch C1 that has a 1st terminal T1 connected to a 1st antenna A1, and 2nd, 3rd and 4th terminals T2, T3, T4 connected to a 2nd antenna A2 and selects the connection of the 3rd and 4th terminals T3, T4 with respect to the 1st and 2nd terminals T1, T2, and a 2nd switch C2 that has 1st and 2nd terminals T5, T6 connected respectively to the 3rd and 4th terminals of the 1st switch C1 and a 3rd terminal T7 that is connected to either of the 1st and 2nd terminals T5, T6 according to the changeover and connected to a receiver.
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