OT: RF (was: RE: E11/WinME results....)

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Thu Feb 15 19:48:29 2001

From: Chuck McManis <cmcmanis_at_mcmanis.com>


>The new 802.11D devices like I've got operate at 2.4Ghz because
> 1) its easy to do spread spectrum there


No because it's legal there. ;)

> 2) its the same frequency as most microwave ovens so the
spectrum
> is considered 'junk.'


Nope. Microwaves are 900mhz or so. the 2.4ghz was picked for the lack
of atmospheric bending making it line of sight and also efficient
antennas very small.

>The note with the card said, "do not operate closer than 2.5" to your
skin
>for extended periods of time." No definition of 'extended' as far as I


Way lower than 2W, most are in the sub 160milliwatt range. Very low
risk save for very close to the antenna as the concentration of power
is greatest there and diminishes at the rate of square law so after a
foot
or so the power per sq/in is very low.

Allison
Received on Thu Feb 15 2001 - 19:48:29 GMT