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Rain Shield @ -5º Superhydrophobic coating

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Uploaded by on Jan 20, 2008

OK it's -5º outside. Half of this dish is coated with Rain Shield and the other is not. I poured two buckets of water over the dish, splashing the water on the reflector. No matter what I do I just can't get the Rain Shield side wet at all.

For the record I do not sell Rain Shield, but I DO USE IT and recommend it.............

Rain fade
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Rain fade refers to the absorption of a microwave Radio Frequency (RF) signal by rain or snow, and is especially prevalent in frequencies above 11 GHz. It also refers to the degradation of a signal caused by the electromagnetic interference of the leading edge of a storm front. Rain fade can be caused by rain or snow at the uplink or downlink location. It does not need to be raining at a location for it to be affected by rain fade. The signal may pass through rain or snow many miles away, especially if the satellite dish has a low look angle. From 5 to 20 percent of rain fade or satellite signal attenuation may also be caused by rain, snow or ice on the downlink antenna reflector, radome or feed horn.

Possible ways to overcome rain fade are site diversity, uplink power control, variable rate encoding, receiving antennas larger than the requested size for normal weather conditions, and hydrophobic coatings.

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