cosmictotem
Registered Senior Member
Definitely. They would be neither cheap nor easy - but at least once built they would keep signaling forever.
Additionally, it wouldn't be wise to make them fully orbital unless they were positioned beyond the orbit of earth. If your rings' orbits put themselves too often and too long betwixt the sun and the earth the reduced sunlight could have negative consequences for life on earth. We don't want to wipe ourselves out with our own signaling device, do we? Surely, the Darwin award of all Darwin awards.