[QUOTE]\nThere is nothing "CRUDE" in the explantion that the WIFI (2.4Ghz) is\nLine of Sight. Plain and simple (the 2.4Ghz) band is LOS. if I remember\nright from school the 2.4Ghz band (SHF) is at the low end of infra-red\nlight. And as we all should know that "light" is "line of Sight"[/QUOTE]\n\nYou remember wrongly. 2.4GHz has a wavelength of about 10cm. It is a factor\nof over a thousand from what one would call IR.\n\nThe propagation of these waves does not have very much diffraction, nor\ndoes it reflect off the ionisphere. It does reflect off of lots of other\nstuff however.\nAnd "line of sight" means light, since that is what we see with. And in\nthis case as I said, the absorption of light and microwaves is very\ndifferent. That you cannot see it does not mean that the waves cannot get\nto you.