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Re: [TowerTalk] Positoners Calibration to True North

To: <n8de@thepoint.net>
Subject: Re: [TowerTalk] Positoners Calibration to True North
From: "AD5VJ Bob" <rtnmi@sbcglobal.net>
Date: Thu, 1 Dec 2005 22:05:35 -0600
List-post: <mailto:towertalk@contesting.com>
Well maybe I should have asked (blush)

Thanks fellows



  73 fer nw,
Bob AD5VJ

10X# 37210, FP#-1141, SMIRK#-5177
http://www.n5iet.com/
Code may be taking a back seat for now,
but the pioneering spirit that put the code
there in the first place is out front of it all.




> -----Original Message-----
> From: Don Havlicek [mailto:n8de@thepoint.net] 
> Sent: Thursday, December 01, 2005 9:56 PM
> To: AD5VJ Bob
> Cc: 'VK2SN - Sean P Neylon'; towertalk@contesting.com
> Subject: Re: [TowerTalk] Positoners Calibration to True
North
> 
> 
> Being in the Northern Hemisphere makes it quite easy to
do at 
> night IF 
> the sky is clear.
> Find Polaris .. the North Star.  Stand so you can sight 
> Polaris THROUGH 
> your tower.  You will be standing due SOUTH of the
tower.  
> Put a marker 
> on the ground.  The next day, go out during daylight and
mark 
> a point on 
> the other side of the tower directly opposite the
nighttime 
> marker you 
> just put down.  That point is DUE NORTH of the tower.
It will be 
> accurate within one degree for any point in the Northern

> Hemisphere if 
> you did the steps carefully.
> Good luck
> Don
> N8DE
> 
> AD5VJ Bob wrote:
> > Try this link your lucky you have a compass I don't.
> > 
> > http://www.satcure.co.uk/tech/compass.htm
> > 
> > I have been trying to find a way for almost a year to
> > figure true north (assuming that's what the logging
> > programs use to do the long path short path thing)
> > 
> > 
> > 
> >   73 fer nw,
> > Bob AD5VJ
> > 
> > 10X# 37210, FP#-1141, SMIRK#-5177
> > http://www.n5iet.com/
> > Code may be taking a back seat for now,
> > but the pioneering spirit that put the code
> > there in the first place is out front of it all.
> > 
> > 
> > 
> > 
> > 
> >>-----Original Message-----
> >>From: towertalk-bounces@contesting.com
> >>[mailto:towertalk-bounces@contesting.com] On Behalf Of
> > 
> > VK2SN
> > 
> >>- Sean P Neylon
> >>Sent: Thursday, December 01, 2005 1:57 PM
> >>To: towertalk@contesting.com
> >>Subject: [TowerTalk] Positoners Calibration to True
> > 
> > North
> > 
> >>
> >>Dear all,
> >>
> >> 
> >>
> >>I am just about to stand up my tower with everything
> > 
> > ready to
> > 
> >>go.yippee..at last..
> >>
> >> 
> >>
> >>I have Azimuth and Elevation Positioners M2 OR2800PDC
> > 
> > and M2
> > 
> >>MT1000  see www.vk2sn.com <http://www.vk2sn.com/>  for
> >>further details of my set-up.
> >>
> >> 
> >>
> >>My location is in the city of Sydney Australia  S33
53'
> > 
> > 12.6''   and
> > 
> >>E151  14'  45.4''    Grid   QF56oc
> >>
> >> 
> >>
> >>To start with I will calibrate my poisoners to True
> > 
> > North for
> > 
> >>Nova and such., then once up and running, I will use
the
> > 
> > Sun
> > 
> >>or whatever to further calibrate via the controller
for
> >>accuracy.  But I want to at least get it close to
> > 
> > accurate
> > 
> >>before I put the tower up.
> >>
> >> 
> >>
> >>I also cant really re-adjust once it goes up, I have
to
> > 
> > pull
> > 
> >>it down and so on.its very heavy for one person, so Im
> > 
> > hoping
> > 
> >>to get things sorted before it goes up,..plus its too
> >>dangerous to climb and Im not one for climbing
towers..I
> > 
> > like
> > 
> >>my kids and want to see them live for a very long
time.I
> > 
> > 
> >>don't have the experience.smile.I'll do most things in
> >>life..but not climb towers on houses..!!!
> >>
> >> 
> >>
> >>So the question is, I will use a compass to choose
> > 
> > North, but
> > 
> >>this is Magnetic North, to get True North, how many
> > 
> > degrees
> > 
> >>do I add or subtract from Magnetic North.or where can
I
> > 
> > find
> > 
> >>this info, or how can I calculate it from my Sydney
> > 
> > position
> > 
> >>- because I gather its different for everyone re
> > 
> > Latitude.
> > 
> >> 
> >>
> >>By the way, I hope this makes sense, the last time I
had
> > 
> > to
> > 
> >>figure out where I was by using a compass was when I
was
> > 
> > 
> >>about 14 years old..so I would like some advice..
> >>
> >> 
> >>
> >>Please advise if Im doing this right, or is there a
much
> > 
> > 
> >>better and easy way to sort/calibrate this situation..
> >>
> >> 
> >>
> >>Thanks guys,
> >>
> >>
> >>Sean Neylon
> >>
> >> 
> >>
> >> 
> >>
> >> 
> >>
> >>Sean  P.  Neylon     VK2SN     QF56oc
> >>
> >>Cell Phone:  ++ 61 413 747 276
> >>
> >>web:    www.vk2sn.com
> >>
> >>email:   sean@vk2sn.com
> >>
> >> 
> >>
> >>_______________________________________________
> >>
> >>See: http://www.mscomputer.com  for "Self Supporting
> > 
> > Towers",
> > 
> >>"Wireless Weather Stations", and lot's more.  Call
Toll
> > 
> > Free,
> > 
> >>1-800-333-9041 with any questions and ask for Sherman,
> > 
> > W2FLA.
> > 
> >>_______________________________________________
> >>TowerTalk mailing list
> >>TowerTalk@contesting.com
> >>http://lists.contesting.com/mailman/listinfo/towertalk
> >>
> > 
> > 
> > 
> > _______________________________________________
> > 
> > See: http://www.mscomputer.com  for "Self Supporting
Towers", 
> > "Wireless Weather Stations", and lot's more.  Call
Toll Free, 
> > 1-800-333-9041 with any questions and ask for Sherman,
W2FLA.
> > 
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com 
> > http://lists.contesting.com/mailman/listinfo/towertalk
> > 
> 
> 


_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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