| 摘要 |
PROBLEM TO BE SOLVED: To permit not only a fixed station but also a moving station to securely receive a signal without providing a large equipment in a dead zone where radio signals from a satellite cannot directly be received. SOLUTION: A gap filler device GFa is installed on the roof of a building. The gap filler device GFa receives and amplifies a broadcasting signal transmitted from a geostationary satellite SAT1 and relays/transmits the received broadcasting signal to the dead area at a frequency equal to that of the broadcasting signal from the geostationary satellite SAT1 by using a directional antenna. |
