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Why do direct broadcast satellite systems stop working in thunderstorms?
Wiki User
∙ 12y ago
The Impact of Satellite Rain Fade
Rain rate is the most common factor used to determine rain fade. Rain fade seems to correlate very closely with the volume of raindrops (expressed in cubic wavelengths) along the path of propagation. This is opposed to the common misconception that the degree of attenuation is proportional to the quantity or individual size of the raindrops falling near the receive site.
Pinpointing the specific factor that lead to attenuation is essential to accurately predicting the problem. Models can be developed from this data to chart the effects of rain fade on a regional or individual site basis. From this information, you can determine the correct antenna size you'll need to counteract the effects of satellite rain fade.
This doesn't mean, however, that buying the largest antenna possible will solve all rain-related problems. There is a point (usually under extremely heavy rain conditions and only for very brief periods) where virtually 100% of the satellite signal is absorbed by rain and no increase in antenna size will raise availability. However, the best way to reduce the effects of rain fade is to
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Wiki User
∙ 12y ago
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