Re: [amsat-bb] GRRRRRRRRRRR!

["John / NS1Z" <ns1z@xxxxxxxx>]

AHA! I didn't realize that the Arrow antennas were circularly polarized. The
last experience I had with the "arrow" was the classic design where shafts
from arrows were use as the elements and inserted thru the boom (aka:
walking stick antenna). This was a portable antenna intended for those who
liked to hike etc and wanted a low weight, portable antenna that could be
quickly broken down for easy transport. I guess I need to start looking at
the pictures in those magazines when they come in now.......

----- Original Message -----
From: David M. Tipton <tiptond@dnrconsulting.com>
To: John / NS1Z <ns1z@arrl.net>
Cc: <amsat-bb@AMSAT.Org>
Sent: Thursday, March 01, 2001 11:26 PM
Subject: Re: [amsat-bb] GRRRRRRRRRRR!


> Uh... No....  You achieve circular polarisation buy phasing two antennas
> 90 Degrees apart.  See http://www.dnrconsulting.com/~tiptond for a very
> common example of a 2M and 70cm version made by M2.
>
> Dave
>
> On Thu, 1 Mar 2001, John / NS1Z wrote:
>
> > Hmmmmm!!??? Wouldn't you have to spin that Arrow antenna pretty fast to
> > achieve circular polarization? The best (?) approach is to use linear
> > polarization. Your signal is down 3 dB but the fade due to polarity
changes
> > is non-existant.....
> >
> > ----- Original Message -----
> > From: David M. Tipton, PhD <tiptond@dnrconsulting.com>
> >
> > > Or put up a set of beams that are circular polarized would be even
> > better...
> > > Or switch to an arrow antenna that you can hand rotate.. Believe it or
> > not,
> > > this is actually easier to control.
> >
> >
> > ----
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> >
>

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