[MLB-WIRELESS] Microtik 200mW Wireless cards for $125USD

[Luke Enriquez]

G'day,

>>Actually those numbers are based on -70dBm and the DLink 520's which
>>have -80dBm for 11Mbits, the extra 10 is for environmental
>>fluctuations...
>
>Otherwise known as "fade margin". :-)  This is a standard "fudge factor" 
>used in designing real (i.e. commercial) radio links.

"Fade Margin" is NOT a fudge factor. It is a calculated amount of RF level
for an expected amount of availability for a given set of conditions, some
of which include frequency, weather, location, fresnel zone clearance,
and other items which contribute to fading. Well documented by the ITU 
and other communication organisations.

Luke Enriquez
RF Design Engineer
VK3EM




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