Always facing away from Earth, but not always facing away from the sun. Not my field, so I don't know how important interference from solar RF is.
If you're building on this scale, why not put two on opposite sides of, say, Deimos? The delta-v between there and LEO is less than the delta-v between the lunar surface and LEO: https://upload.wikimedia.org/wikipedia/commons/9/93/Solar_sy...