Ham Radio Moon Bounce, also known as Earth-Moon-Earth (EME) communication, is a type of amateur radio communication in which radio signals are transmitted from Earth to the Moon and then reflected back to Earth, allowing for long-distance communication between amateur radio operators around the world.
The EME technique relies on the Moon as a passive reflector for radio signals. The process involves transmitting a high-frequency radio signal from a powerful transmitter on Earth towards the Moon. When the radio signal reaches the Moon, it reflects off the surface of the Moon and travels back to Earth, where it is received by a specialized radio receiver.
The reflected signal can be received by any amateur radio operator located on the opposite side of the Earth from the transmitting station. The Moon acts as a natural mirror that reflects the radio signal back to Earth, allowing for communication over vast distances.
EME communication requires specialized equipment, including a high-power transmitter, a large antenna, and a sensitive receiver. The transmitter must be capable of producing a high-power radio signal, usually in the range of several hundred watts to several kilowatts, to ensure that enough energy is available to reach the Moon and be reflected back to Earth. The antenna must be highly directional, so that it can focus the radio signal towards the Moon, and it should be capable of tracking the Moon's movement across the sky as it orbits the Earth. The receiver must be highly sensitive, to detect the weak signal that is reflected back to Earth from the Moon.
EME communication is a challenging and complex type of radio communication that requires a lot of technical skill and knowledge. It also requires careful planning and coordination between transmitting and receiving stations, as the position of the Moon in the sky and the quality of the signal can vary depending on many factors, including the time of day, the season, and the weather.
Despite the challenges involved, EME communication is an exciting and rewarding hobby for amateur radio operators who enjoy pushing the limits of what is possible in radio communication. It allows operators to communicate with other radio operators located around the world, often in remote and hard-to-reach locations, using nothing more than the power of radio waves and the natural reflectivity of the Moon.