![]() ![]() ![]() ![]() The earlier contacts were made using slow-speed CW and large antenna arrays were driven by transmitter output of 1 KW or more. Ever since then, radio amateurs from around the world have been using the lunar surface to establish Earth-Moon-Earth (EME) Moonbounce communication. Successful attempts at bouncing radio signals off the lunar surface were done in 1953, however, the first successful two-way communication was established in the early 1960s. Moreover, the man-made satellites are active and carry transponders and repeaters while the moon can only perform as a passive reflector thus adding far greater challenges. Unlike the man-made artificial satellites that orbit the earth at relatively lower altitudes, the moon is a natural earth satellite that has the highest known altitude. Well before the first artificial earth-orbiting satellite was placed around our planet, the moon was used to bounce radio signals off its surface for establishing communication between radio stations on earth. This is the earliest application of earth satellite communication ever attempted by radio amateurs. Earth-Moon-Earth EME Moonbounce communication is a very fascinating aspect of amateur radio.
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