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To: Reagan DuBose who wrote (4195)	8/10/1998 10:36:00 AM
From: Drew Williams	Read Replies (2) \| Respond to of 10852

re: SkyStation <<The SS web site shows a graphic with coverage diameters labeled as follows: 75KM - UAC, 150KM - SAC, 600KM - RAC. I could not find a definition of "UAC", "SAC", "RAC", but it looked like some level of service was planned for all three areas. The UAC area would have minimum line of sight elevation angles of about 15 degrees, with lower elevation angles for the other areas.>> How about: UAC = URBAN Area Coverage SAC = SUBURBAN Area Coverage RAC = RURAL Area Coverage --- Thanks Geoff!

To: Reagan DuBose who wrote (4195)	8/11/1998 10:19:00 AM
From: Mr. Adrenaline	Read Replies (2) \| Respond to of 10852

The point I was trying to make, was in fact, that they just can't compete with coverage, and also that there niche may be extra coverage for special event. I did a simple calculation for the 40 m coverage. Note that 40 m is about 65 km, which isn't too far off they published number of 75 km. (I missed their numbers on their Web Page.) I assumed direct line of sight for coverage. I don't know what UAC, SAC or RAC stands for either, but assume that they must be trying to skip signals off of the atmosphere somehow to get anything above direct line of sight coverage...? Regards Mr A