Doug Huffman Posted January 6, 2010 CID Report Share Posted January 6, 2010 Thanks for bringing up WildBlues' favorite ignorance. Microwave attenuation is a function of droplet size and number in the path. For the total number = volume, look to the definition of dBZ used in Doppler weather radar. It is a meteorological measure of equivalent reflectivity (Z) of a radar signal reflected off a remote object. The reference level for Z is 1 mm^6 m^-3, which is equal to 1 μm^3. It is related to the number of drops per unit volume and the sixth power of drop diameter. The topic is, in general, directly related to Glow-bull Warning. Cloud cover with heavy moisture will loss the signal do to it's short wave length, Gets much shorter with the KU birds. I also use the formula 2808 divided by the freq in MHz equals a 1/4 wave in inches. So there is a better understanding how big raindrops will absorb intelligence. With digital you either have a perfect signal or you don't have one. A slight signal degradation means nothing about speed. I love your forum, I'm learning or it was a wasted day, as usual haha Marsh Quote Link to comment Share on other sites More sharing options...
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