You're confusing selective availability, which is on the civilian side, with bands. There are four civilian bands, with a fifth in the works for critical uses.

You're confusing selective availability, which is on the civilian side, with bands. There are four civilian bands, with a fifth in the works for critical uses. There are two military bands, and they are encrypted. The military bands (two) have always been encrypted and being on different bands, cannot be received at all by civilian receivers, though I imagine it's mostly a firmware change with some minor hardware changes. Don't talk about things you wildly do not understand or know anything about.