What if I develop a signal that goes outside of, over, around or between the currently recognized "spectrum," is it mine or does it belong to the people of the USA?
If you infringe upon the FCC reserved bands, you have committed a crime. If your signal is out of the Public domain's spectrum, and it is not infringing upon other signals; then you would need to register it with the FCC and wait for them to decide whether they will permit you to use it. (National Security issues then crop up). If it's in the public domain's range, it's fair game.