Mxsmanic wrote:

Newps writes:

Exactly, a system. WAAS is part of that system.

No, WAAS is a separate system.

GPS consists of three segments: Ground (control system), Space (the
satellites) and User (Receivers typically). WAAS is an augmentation
system to GPS. It is operated by the FAA whereas the GPS is operated
by the USAF.

Ron Lee