[MLB-WIRELESS] IEEE Victorian TALK: Gigabit Wireless Systems
Tony Langdon, VK3JED
vk3jed at optushome.com.au
Sat May 19 22:30:03 EST 2007
At 09:54 PM 5/19/2007, David Smith wrote:
>Yes, I stand corrected. My * is obviously not as smart as I thought ;-)
>My only experience is with 24GHz, where water vapour loss dominates.
>The difference in path loss between dry and moist air is quite dramatic
>(e.g. as night falls).
24 GHz is very close to a resonant frequency for water, if I recall,
hence water vapour being the dominant cause of attenuation on 24
GHz. 60 GHz is close to resonance for oxygen molecules.
I did look into 60 GHz for a commercial venture a while back, and
noted the severe attenuation on that band.
73 de VK3JED
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