No, there are 2 SSIDs; the MAC address of the AP is also an SSID (BSSID, actually...), and that's what I meant.

Lardman, I haven't used it, and am not all that knowledgeable about GPS in general, so I guess a little less dogmatism (from me) would have been in order. But I think you're confusing AGPS with DGPS/WAAS. AGPS doesn't know a thing about the ionosphere, etc.