[amsat-bb] Re: TransAtlantic Balloon on 28 MHz ?

[Joe]

Bob says
"Just wondering if anyone has a vertical beam. A horizontal beam will be 
useless for direction finding. All it will do is point to whatever is 
reflecting the energy into the strongest horizontal component..."

That is only true when receiving the signal via direct line of sight 
propagation.

Once the signal is over the horizon, and is using the ionosphere to 
propagate the signal, the reflected signal can and does come back down 
at any polarization.

Matter of fact in minutes it can "Rotate" from vertical to horizontal 
and anywhere in between. or even faster rotation. QSB is mostly caused 
by this polarity rotation of the signal.

Joe WB9SBD

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com

On 2/15/2012 11:18 PM, Bob Bruninga wrote:
> Just wondering if anyone has a vertical beam.
>
> A horizontal beam will be useless for direction finding.  All it will do is point to whatever is reflecting the energy into the strongest horizontal component...