[MLB-WIRELESS] Cheap Waveguide antenna for Access Points

[george]

Thanks for that Jason,  just one more question that arises.

If there is a helical at one end and say an omni at the other would this
present any problems?

-----Original Message-----
From: Jason Hecker [mailto:jason at air.net.au]
Sent: Friday, 1 February 2002 5:48 PM
To: melbwireless at melbwireless.dyndns.org
Subject: RE: [MLB-WIRELESS] Cheap Waveguide antenna for Access Points



>Excuse my ignorance but with the helicals  what is CP? and does a left hand
>spiral or a right hand spiral have any influence?

CP be Circular Polarisation.  Left and right hand polarisation doesn't
matter with linear antennas, but only with respect to each other.  With
circularly polarised antennas, you must get the handedness the same for
both.

>What polarisation will most people in this net opt for?

For linear antennas, horizontal polarisation should be the norm.  But oh
bugger, the slotted waveguide is horizontally polarised and most omni's are
vertically polarised.  Conumdrum!  See, if everyone used left handed
helicals then this wouldn't be a problem.  ;)

If you have an access point, just advertise which side of the fence you sit
on so the punters can orientate their Galaxy aerials and Milo tins properly.


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