[MLB-WIRELESS] Colorbond/roof insulation interference.

[Steven Haigh]

in an ideal world, you'd want to clear the top of the dish before the
start of the omni...

It will slightly, distort the radiation pattern of the omni regardless,
but to a lesser extent if the omni starts above the top of the galaxy

On Mon, 2003-02-17 at 12:22, lkhoo at csc.com.au wrote:
> John said :
> 
> >2.4GHz radio waves (as used in WLANs) will not propagate though metal.
> >A colorbond roof will block any signal from an antenna in the roof space.
> >(Possibly you will get a weak signal though the ceiling, but any decent
> >singal will be a fluke.)
> 
> Thanks. I didn't think it would work. In the interests of science I might
> have a go and see what I get. :)
> 
> >Typically an omni will have a null on it's axis, so an antenna directly
> >below it will be in a favourable position.
> 
> 
> So something like the below would work fine? Or would the omni need to be
> clear of the galaxy overlap area?
> (warning crappy ascii art ahead, not sure if it will work)
> 
> 
> ()
> ||
> ||  <------ 6db omni
> ||
> ||    /
> ||   /
> ||  /    <---- overlap area!
> || /
> ||/
> ()----------\
> ()----------/     <--- ex galaxy
> |\
> | \
> |  \
> |   \
> |    \
> |
> |
> |
> |
> |
> |     <---- Mast
> |
> |
> |
> ------------ <- roof
> 
> 
> 
> Lucas
> 
> 
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-- 
Signed,
Steven Haigh
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