Topband: Topband Digest, Vol 173, Issue 22

Thu May 25 12:23:33 EDT 2017

Meteor Strike on NOVA Website

You can always stream this or any other PBS re-run from the collection of
NOVA vids on the PBS NOVA website.

TIP: If your local station doesn't show this (or any other PBS vid) change
you local station to one in a big city.

On Thu, May 25, 2017 at 12:00 PM, <topband-request at contesting.com> wrote:

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> Today's Topics:
>
>    1. propagation question. (K1FZ-Bruce)
>    2. Re: propagation question. (Tim Shoppa)
>    3. Re: propagation question. (K1FZ-Bruce)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 24 May 2017 16:20:36 -0400
> From: "K1FZ-Bruce" <k1fz at myfairpoint.net>
> To: "Topband" <topband at contesting.com>
> Subject: Topband: propagation question.
> Message-ID: <201705242020.v4OKKa3S010307 at mail23c26.carrierzone.com>
> Content-Type: text/plain; charset=UTF-8
>
>
> Watch " Meteor Strike" on some PBS TV stations tonight.    Check your
> local TV listings for time and channel.
>
>  Did anyone notice an increase in low band propagation for awhile, after
> this rather large event ?
>
> 73
> Bruce-K1FZ
> http://www.qsl.net/k1fz/beverage_antenna.html
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 24 May 2017 21:18:50 -0400
> From: Tim Shoppa <tshoppa at gmail.com>
> To: k1fz at myfairpoint.net
> Cc: Topband <topband at contesting.com>
> Subject: Re: Topband: propagation question.
> Message-ID:
>         <CAJ_qRvYQKgNhYLfkhtacig9+MGt_HAUa_cbxjPsLOaatGAYk+Q at mail.
> gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Bruce, I went and looked at reversebeacon statistics for the two nights
> before the Chelyabinsk meteor (that would be 13 Feb 2013 and 14 Feb 2013)
> as well as the night of the strike (15 Feb 2013). The strike was at 0320Z.
> I specifically looked for 160M EU-NA transatlantic reversebeacon spots and
> counted the number of such spots.
>
> On 13 Feb 2013, there were 636 EU-NA reversebeacon spots.
> On 14 Feb 2013, there were 776 EU-NA reversebeacon spots.
> On 15 Feb 2013, there were 1984 EU-NA reversebeacon spots.
>
> HOWEVER, there is a confounding factor, which is that ARRL DX CW started on
> 16 Feb 2013. I think the pickup in spots on 15 Feb could be entirely
> explained by stations warming up and checking out the night before the
> night before the big contest.
>
> There was one station, LY7M, that was on 160M for several hours before and
> several hours after the meteor. I plotted a curve of its strength at a NA
> Skimmer and while there are a couple peak-ups, I don't think the peak-ups
> are necessarily tied to the meteor strike. You can see the curve I plotted
> here: http://n3qe.org/ly7m-meteor.png
>
> Tim N3QE
>
>
> On Wed, May 24, 2017 at 4:20 PM, K1FZ-Bruce <k1fz at myfairpoint.net> wrote:
>
> >
> > Watch " Meteor Strike" on some PBS TV stations tonight.    Check your
> > local TV listings for time and channel.
> >
> >  Did anyone notice an increase in low band propagation for awhile, after
> > this rather large event ?
> >
> > 73
> > Bruce-K1FZ
> > http://www.qsl.net/k1fz/beverage_antenna.html
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 24 May 2017 22:14:11 -0400
> From: "K1FZ-Bruce" <k1fz at myfairpoint.net>
> To: tshoppa at gmail.com, "Topband" <topband at contesting.com>
> Subject: Re: Topband: propagation question.
> Message-ID: <201705250214.v4P2EBdc022598 at mail22c26.carrierzone.com>
> Content-Type: text/plain; charset=UTF-8
>
>
> Tim,
>
> Many thanks for your research,
>
>  How do the numbers compare to other years,  the same contest ?.
>
> Bruce-k1fz
>
>
>
>
>
> On Wed, 24 May 2017 21:18:50 -0400, Tim Shoppa  wrote:
>
> Bruce, I went and looked at reversebeacon statistics for the two nights
> before the Chelyabinsk meteor (that would be 13 Feb 2013 and 14 Feb 2013)
> as well as the night of the strike (15 Feb 2013). The strike was at 0320Z.
> I specifically looked for 160M EU-NA transatlantic reversebeacon spots and
> counted the number of such spots.
>
> On 13 Feb 2013, there were 636 EU-NA reversebeacon spots.
> On 14 Feb 2013, there were 776 EU-NA reversebeacon spots.
> On 15 Feb 2013, there were 1984 EU-NA reversebeacon spots.
>
> HOWEVER, there is a confounding factor, which is that ARRL DX CW started on
> 16 Feb 2013. I think the pickup in spots on 15 Feb could be entirely
> explained by stations warming up and checking out the night before the
> night before the big contest.
>
> There was one station, LY7M, that was on 160M for several hours before and
> several hours after the meteor. I plotted a curve of its strength at a NA
> Skimmer and while there are a couple peak-ups, I don't think the peak-ups
> are necessarily tied to the meteor strike. You can see the curve I plotted
> here: http://n3qe.org/ly7m-meteor.png
>
> Tim N3QE
>
>
> On Wed, May 24, 2017 at 4:20 PM, K1FZ-Bruce wrote:
>
> >
> > Watch " Meteor Strike" on some PBS TV stations tonight.    Check your
> > local TV listings for time and channel.
> >
> >  Did anyone notice an increase in low band propagation for awhile, after
> > this rather large event ?
> >
> > 73
> > Bruce-K1FZ
> > http://www.qsl.net/k1fz/beverage_antenna.html
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
>
>
> ------------------------------
>
> Subject: Digest Footer
>
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> ------------------------------
>
> End of Topband Digest, Vol 173, Issue 22
> ****************************************
>