PURPOSE: To enable receiving of plural bands using an antenna and an indoor unit by providing SHF-UHF converters for necessary different bands and switching these for a parabolic passive reflector and indoor unit.
CONSTITUTION: To receive nicely a band A of direct polarization and a band B of circular polarization, an SHF-UHF converter 2A for the band A and an SHF- UHF converter 2B for the band B are provided. These converters 2A, 2B are made to be selectively switched to a reflected radio waves converging position of a parabolic passive reflector 11. This switching is made by rotation of the two converters 2A, 2B around an axis 51S. Bands of UHF signals from the converters 2A, 2B are selected to become equal, and led to the input terminal of an indoor unit through coaxial cables 55A, 55B and a switch box 56.
KUMAMOTO KENICHIROU
TSURUMARU SHINOBU
TAKASAKI YUKIO
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