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Technology Stocks : The *NEW* Frank Coluccio Technology Forum

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To: justone who wrote (907)10/17/2000 8:11:57 AM
From: Valueman  Read Replies (2) of 46821
 
I can't believe I missed a good satellite internet discussion!

- say @4.4 Kpbs real continuous data demand per active user (this is the total demand for
the user averaged over the web session)
- these users share 44 mbps as quoted in the press release
- peak demand is one active user per 5 subscribers

This means one satellite can handle ~50,000 subscribers.


Each 36 MHz transponder has about a 45 Mbps capacity. A service like Gilat's Starband is starting off with 14 transponders on Loral's Telstar 7 satellite. A typical sat today has approximately 24 Ku-band, and 24 C-band transponders. FYI, in Starband's S-1 filing, they have been getting 7,500 subs per transponder while maintaining their 150 Kbps minimum. To wrap up this summary, a sat costs ~$250 million to build, launch, and insure.

Other fun facts--a typical modern sat has about 1.2 Gbps throughput capacity. Birds being built now, with frequency reusing spot beams, will up that to 6-7 Gbps. Technology of ViaSat can be used to boost that capacity to 20-40 Gbps on a Ka-band spot beam satellite.
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