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Old Oct 23, 2009, 06:27 AM
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Quote:
Originally Posted by Hueber
Yes, it can make a big difference, especially if you're flying low! Line of sight is only half the truth, you need also free space over and UNDER this line. Otherwise, you can loose up to 6dB, which results in half the range, even if you have direct sight to the plane.
See here: http://en.wikipedia.org/wiki/Fresnel_zone

Cheers, Roman

I started to cry when i read this part

Fn = The nth Fresnel Zone radius in metres

d1 = The distance of P from one end in metres

d2 = The distance of P from the other end in metres

λ = The wavelength of the transmitted signal in metres

The cross section radius of the first Fresnel zone is the highest in the center of the RF LoS which can be calculated as:


My ears are bleeding
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