Electronic Communication Systems 2nd Edition by Roy Blake

Exercise 20

It is possible to communicate between points on earth by using the moon as a passive reflector. In fact, it is done routinely by radio amateurs. Calculate the time delay and round-trip path loss at 1 GHz using the moon as a reflector (the distance to the moon was calculated in Problem 27). Note that your path loss calculation ignores losses in the reflection at the moon's surface. What can you conclude about the likely commercial possibilities of this idea