[MLB-WIRELESS] Orientation of antennas

[Ryan Abbenhuys]

I have an antenna orientation question too.....not quite as dumb I hope ;-p

Okay, the waveguide on my AP is horizontally polarised, so of course if
you're connecting with a galaxy or similar dish you have to swing it around
90 degrees from the usual orientation.  However, one of my client
connections is using one of my commercial 24's, which allows you to just
spin the dipole 90 degrees instead of the whole dish, thus you get the full
use of the adjustments on the dish mounts.
.....however, after putting up with a mysterious shite signal for a few
months I pulled it down to try something else, span the dipole back to the
original orientation and instead spun the whole dish........and whola!!
Connection jumps from something like -85 to -70.
So my question is, does the reflector itself somehow have an effect on the
polarisation??  I thought it was just the dipole itself?


----- Original Message -----
From: "Tony Smith" <tony at tonsyl.org>
To: "Melb Wireless" <melbwireless at wireless.org.au>
Sent: Monday, July 15, 2002 2:35 PM
Subject: [MLB-WIRELESS] Orientation of antennas


>
>
> Here is a really, really dumb question.
>
> I've just installed two helical antennas made to Jason Hecker's design.
>
> I've installed them "upright" becuase this is the logical thing to do and
> nothing in Jason's instructions says to do any different.
>
> Been looking at a few other sites today, one of them is openly (with full
> atribution and gratitiude) a version of Jason's design. The photos of the
> completed antenna shows it installed horizontal.
>
> Am I missing something?
>
>
> Cheers
>
> Tony Smith
>
> Connected to the internet in Sunny Far North Queensland Australia
> http://www.tonsyl.org
>
>
>
>
>
>
>
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