[TowerTalk] compass question

[Bill Axelrod]

We used to use "East is least, West is best"

Bill K3WA
----- Original Message -----
From: "Jim Lux" <jimlux at earthlink.net>
To: <towertalk at contesting.com>
Sent: Monday, February 10, 2003 7:58 PM
Subject: Re: [TowerTalk] compass question


>
> >Date: Mon, 10 Feb 2003 16:49:06 -0800
> >To: "RICHARD BOYD" <ke3q at msn.com>
> >From: Jim Lux <jimlux at earthlink.net>
> >Subject: Re: [TowerTalk] compass question
> >
> >Everybody has a different conceptual picture of how to remember this, so
> >try a variety of mnemonic devices until you find one that works.
> >
> >Depends if you are west or east of the Agonic Line (i.e. the line on
which
> >the deviation = 0).. In your case, you are east of the line, so the
> >deviation is west.. (that is, the direction to Mag north is to the left
> >(west) of the direction to true north).  So, for you, when the needle
> >points to 350, the zero points to true north.
> >
> >If you remember that the mag north pole is up near Hudson's Bay (70N,
> >100W, approx), and mentally think about where that is, vs where the "real
> >north pole" is, you can figure it out.
> >
> >Also, US topographical maps have this indicated, pictorially, at the
bottom.
> >
> >If you have one of those nifty azimuthal equidistant projection maps
> >centered on your QTH, you can find True and Mag north poles and just hold
> >your compass over the map.
> >
> >For those who live in the far East(80E longitude),or in the Southern
> >Hemisphere, you'll need other conceptual aids...
> >
> >There are some nice pictures at:
>
>http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/magnetic.html
> >
> >
> >Jim, W6RMK
> >
> >
> >At 06:57 PM 2/10/2003 -0500, you wrote:
> >>No, this is not the perennial finding true north question.  In my area,
> >>Maryland, the "magnetic deviation" is about 10 degrees.  I can never
> >>remember, though, if that means when I have my compass out I should let
> >>the needle come to a stop on 350 or on 10 to have zero pointing at true
> >>north.  Magnetic north is where the needle will point, obviously, and
> >>true north is 10 degrees off from that, but I can never remember which
> >>way.  ?  73 - Rich, KE3Q
>
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