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To: Educator who wrote (27342)3/3/2001 3:42:11 AM
From: E. Davies  Read Replies (2) | Respond to of 29970
 
Just so theres a post at least every couple of days (does that feel like a bottom or what?) I thought I'd throw out this little tidbit I ran into about teledesic. Those are the guys building the low orbit satellites that some say is gonna wipe out both cable & dsl.

Yeah sure. First is that it wont be operational until 2005. The other is this factiod I'd long been wondering about:

Within any circular area of 100 km radius, the Teledesic Network can support more than 500 megabits per second (Mbps) of data to and from user terminals.
teledesic.com

So- 500meg in a 120 mile footprint is the total capacity. Thats what- 5000 users active at once using 100k each, or 500 users running at 1meg.

How many residences in your average 120 mile footprint? Here's an extreme but not entirely outrageous example-- 120miles is larger than the entire San Francisco bay area from SF to San Jose. Wild guess- 10 million people. I figure most major population centers with surrounding area are going to have 1-2 million people.

500 meg for 2 million people? Hmmm. sounds pretty marginal to me, except for pure rural areas. After all @home has a backbone of dual 5Gb links to every city, with plans to expand a great deal more.

Eric