[MLB-WIRELESS] Helical Antennas & Interferance & Corkscrews

[Brett Murphy]

They reduce signal on vertical and horizontal poles by 3dB
I am using some on an inner suburb link, and since these problems you speak 
of arose a few weeks ago, I have been unable to get more than 1mbit/sec 
through the bridging link.
My next step is to try normal cantennae horizontally polarised as I am 
pretty sure said interference is vertical only.



At 10:41 AM 7/1/2003 +1000, you wrote:

>Can anyone enlighten me as to their experiences with Helical antennas and
>their performance with regards to interferance.
>http://www.wireless.org.au/~jhecker/helix/
>
>As I understand it, they have a circular polarisation like a corkscrew
>effect.  Does this allow it to pickup more interference as I'm guessing it
>would pickup horizontal and vertical....and everything in between?
>
>I'm trying to establish whether these would be a better option for inner
>city links where there is a high 2.4Ghz noise floor.  Particularly around a
>certain very tall structure I mentioned yesterday. *cough*
>
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All the best,
Brett Murphy
Director, Alphalink (Australia) PTY LTD
ph: +61 3 9495-9000 fax: +61 3 9486-6822
email: me at murf.net

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Director, Alphalink (Australia) Pty Ltd.



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