Re: Topband: circular polarization on 160m

["Tom W8JI" <w8ji@w8ji.com>]

Here are some pictures and a sound file or two...

http://www.w8ji.com/HF%20circular%20polarization.htm

----- Original Message ----- 
From: <dado@prijedor.com>
To: <topband@contesting.com>
Sent: Wednesday, February 12, 2014 6:41 AM
Subject: Re: Topband: circular polarization on 160m


> hi Guys,
>
> interesting discussion
>
> If want, hear this file,
> https://drive.google.com/file/d/0B8I6Nck0GwTdYTI0MzVkY2QtYjUyYS00YmE3LTk4NTktNWVlNzE2ZGFiYmE1/edit?usp=sharing
>
>
> this is E74AW and OZ1LXJ recording of ZL3IX, at same time, John was
> so kind and sinchronise those two audio recordings together in one file,
>
>
> will hear how QSB is different on different station, when peak is on
> my side, deep gos to John and VV
>
> thanks, 73 cul dado E74AW
>
> Дана
> 06.02.2014 06:21, James Wolf је написао:
>
> > Jose,
> >
> > I am only
> presenting the possibility that if the ionosphere (where 160
> >
> propagation happens) isn't uniformly smooth and instead consists of
> "warps,
> > wrinkles and tilts" that in a *dynamic ionosphere*, this could
> be at least
> > one reason we are experiencing slow fades.
> >
> > Elliptical
> polarization, assuming that it is ever changing, could provide
> > yet
> another degree of selective fading.
> > I'm don't think I *totally*
> understand why KL7AJ says that "at HF the
> > ionosphere forbids the
> propagation of linearly polarized signals". If at
> > the magnetic
> equator, and signals were East to West to equal the earth
> > magnetic
> tilt of the signals, it seems that at an instance in time that a
> >
> linear polarized signal could happen. But that may be nit picking.
> >
> Jim - KR9U
> > From: JC N4IS [mailto:n4is@comcast.net]
> > Sent:
> Wednesday, February 05, 2014 10:45 PM
> > To: jbwolf@comcast.net; 'Tom
> W8JI'; herbs@vitelcom.net;
> > topband@contesting.com
> > Subject: RE:
> Topband: circular polarization on 160m
> > James
> >
> > You brought a
> good article about HF propagation, however the behavor on 160m
> > is
> different from HF. If you check on the KL7A arcticle figure 1 what is
> >
> happening between 1 and 2 MHz you can see that the green and red does
> not
> > behaivor the same way as above 2 MHz.
> >
> > This subject is more
> complex because there us no shirt answer, actualy
> > between 1 and 2 MHz.
> the ionosphere does not support linear polariration
> > wave. The wave are
> actualy eliptical and not circular for most directions.
> > You can
> check the long answer on the "must read book" from NM7M . R Brown
> > 'The
> Big Gun's Guied to Low Band Propagation" . Magneto-iomic Theory pag 47
> >
> to 56 ; and Power coupling pag 57.
> > Thanks to Karl. K9LA, the book
> is available on his also must read site on
> > the 160m link
> http://k9la.us/html/160m.html [1]
> > Regards
> >
> > JC
> >
> > N4IS
> _________________
> > Topband Reflector Archives -
> http://www.contesting.com/_topband [2]
>
>
> Links:
> ------
> [1]
> http://k9la.us/html/160m.html
> [2] http://www.contesting.com/_topband
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