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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here
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To: RocketMan who wrote (2579)12/14/1998 4:38:00 PM
From: RocketMan  Read Replies (2) of 12823
 
Wanted to add this, but ran out of edit time. The max data rates from broadcast satellites at geo are in the order of 20-30 Mbps, or about 10-20 T-1 lines. That bandwidth has to be divided among 100+TV channels, which takes 100-500Kbps each, depending on the level of MPEG compression. What is left over, which is not much, is enough to transmit a decent-sized cache file, say a meg or so, in a reasonable time, 10-15 seconds in an asynchronous mode. But it is a trade off between TV and data. If Hughes was going to orbit a dedicated data fully synchronous satellite for internet use, which I think would hardly be profitable, they could get the equivalent of a good local ISP, but not nearly the kind of bandwidth they would need for national service. P.S. These are back of the envelope estimates, so they may be off a bit.
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