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Microcap & Penny Stocks : MEME Media Entertainment
MEME 6.5120.0%Nov 14 9:30 AM EST
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To: Gold Panner who wrote (389)4/13/1998 11:07:00 PM
From: WTC  Read Replies (1) of 638
 
The ONLY issue I would take with D.Waitt's very insightful post #351 concerns his characterization of weather effects on RF propagation at 900 MHz and 2.4 GHz. The single RF propagation impairment that is normally considered "weather related" is rain fade at microwave frequencies. This is a loss that can certainly be calculated at .9 or 2.4 GHz in heavy rainfall, but even at 25mm+/hr rain rate (heavy!), rain fade is trivial at these frequencies. In the link budget, it is down in the rounding, along with atmospheric losses and transmitter transmission line losses.

I am truly puzzled by the weather references as service affecting at these frequencies. Even lightening strikes (unless they hit your antenna!) don't tend to affect spread spectrum transmissions, and if they do, the duration of the disturbance is so short that normal system management of packet retransmission takes care of the lost data packets transparently. I suppose extreme winds that knock down or de-orient antennas could be considered a weather effect impacting any wireless system, but as a matter of customary semantics in the wireless industry, this is usually not treated as a "weather effect."

There are quite a few very legitimate questions about whether MEME actually can and would operate the way it has been represented by some posting their "feelings" about how they "hope" it functions, but I would not be inclined to let adverse weather performance rise to the standing of a significant performance issue.
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