E3A01 What is the approximate maximum separation measured along the surface of the Earth between two stations communicating by Moon bounce?
A. 500 miles, if the Moon is at perigee
B. 2000 miles, if the Moon is at apogee
C. 5000 miles, if the Moon is at perigee
D. 12,000 miles, as long as both can “see” the Moon
- Two stations must be able to simultaneously see the moon to communicate by reflecting VHF or UHF signals off the lunar surface. Those stations may be separated by nearly 180° of arc on the Earth’s surface — a distance of more than 11,000 miles. There is no specific maximum distance between two stations to communicate via moonbounce, as long as they have a mutual lunar window. In other words, the moon must be above the radio horizon where both stations can “see” it at the same time.