E3A01:

What is the approximate maximum separation measured along the surface of the Earth between two stations communicating by EME?

  1. 500 miles, if the moon is at perigee
  2. 2000 miles, if the moon is at apogee
  3. 5000 miles, if the moon is at perigee
  4. 12,000 miles, if the moon is visible by both stations