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Re: [IRCA] Latin America DX western US/Canada (was: Oklahoma TP DX 10/3/16)

So right.... I don't understand why this is such a mystery to the east coasters. Aurora geometry and land path and bearing to DX = bearing to interference explains it all.

Chuck
________________________________
From: IRCA <irca-bounces@xxxxxxxxxxxxxxxx> on behalf of Nick Hall-Patch <nhp@xxxxxxxx>
Sent: Monday, October 3, 2016 6:33 PM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] Latin America DX western US/Canada (was: Oklahoma TP DX 10/3/16)

I think that the westerners lack of enthusiasm for auroras is
generally poor results when one occurs.   Possible reason is that the
aurora has to be quite intense to affect us, as our geomagnetic
latitude is further south than the eastern and midwestern USA.   An
aurora that wipes out midwestern interference for easterners is also
going to start to block paths from say Venezuela to the Pacific
northwest.    An aurora that shuts down reception of the still
dominant eastern clear channels  for eastern DXers, allowing southern
DX to get through, has little effect on our principal interference
sources here, which are from the south (San Francisco, Portland
etc.)   Our interference from Boise, Calgary and Billings, MT is just
not that important in comparison.   As someone said once to me in
Vancouver, BC, when you face north, the next city of any size is St
Petersburg; there is just not much interference up that way.

So, we're  spoiled here.   Compared with the east and mid west, the
band is not so full of powerful signals. However, what powerful
signals we have are all in the way of reception from Central and
South America, which is a fair bit further away than those locations
are from the eastern part of the continent....mostly a land path too,
whereas your paths often involve water.    And the aurora won't
affect them without affecting targets further south.

So, we'll just have to wait for split frequencies and continent wide
clear channels to return.

best wishes,

Nick


At 17:38 03-10-16, you wrote:
>....
>My "two cents."  I'm always surprised at how auroras are not usually
>a cause for great DX enthusiasm out west and that so little
>non-Mexico Latin American activity is ever reported even with
>probably 4 times as many active DXers out there as compared to the
>northeastern USA and adjacent Canadian provinces.  (And you guys are
>often running better antennas.)

Nick Hall-Patch
Victoria, BC
Canada

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