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Technology Stocks : The New Qualcomm - a S&P500 company

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To: w molloy who wrote (3113)	11/9/1999 3:52:00 PM
From: RoseCampion	Read Replies (1) of 13582

A 28.8KB speed measured at the air interface (at the bottom of the software stack) could easily 'only' be 19.2KB at the top of the stack, where your application is located. A good point, and another thing to add to the list of how to perform apples-to-apples comparisons of different wireless data technologies: "How much of the raw overhead on average will be taken up by framing, routing, error-checking, and packet identification information?". Different schemes may have markedly different overhead requirements. However, (1) copper technologies have at least some of this kind of overhead, too (even the simplest serial protocols have 10-15% - ever hear of start and stop bits?), and (2) in this case the Ricochet service was advertised as "just as fast as a 28.8 modem", so they really did claim to be able to push the bits through at an equivalent speed. -Rose-

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