RE: [amsat-bb] GRRRRRRRRRRR!

["Frederick M. Spinner" <fspinner@xxxxxxxxxxx>]

You are adding a linear component (making the system elliptical) to the mix 
by increasing the spacing.  It could be throretically tuned out, but how to 
do this is probably more complicated than it is worth.

BTW the advantage to the +/-45 degree spacing is that less switches/relays 
are needed for all polarizations (including H & V-- drive both sets of 
elements in phase or one 180 degrees out of phase to do H & V, 90 degrees & 
270 degrees for RHCP/LHCP)..

Fred W0FMS

>From: "Howard Long" <howard@howardlong.com>
>To: "Jon Ogden" <na9d@mindspring.com>,   "Jens Schmidt" 
><j.schmidt@paradise.net.nz>,   "Frederick M. Spinner" 
><fspinner@hotmail.com>
>CC: <amsat-bb@AMSAT.Org>
>Subject: RE: [amsat-bb] GRRRRRRRRRRR!
>Date: Tue, 6 Mar 2001 15:30:02 -0000
>
>Hello Jon
>
> > I don't think that's what he's talking about.  The -45, +45 mounting 
>will
> > give CP just like a 0 and 90 mounting.  That makes no difference.  What
> > changes the polarization is that the elements are physically separated
>from
> > each other (not on the same axis) as they are on 2 different antennas.
>
>OK I give up... educate me! If the antennas on the ground are pointing
>directly at the satellite, why is the polarization any different to having
>the elements on the same boom? ie circular rather than eliptical?
>
>73 Howard G6LVB
>
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