NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Paul Dolkas
Date: 2015 Jun 30, 10:08 -0700
…and while we are on the subject, can ANYONE tell me why electronic compasses seem to be much more sensitive to local “interference” from electrical power lines and the like? I mean, a magnetic field is a magnetic field, and the compass (electronic or otherwise) simply indicates which way it’s pointing.
Paul Dolkas
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Andrés Ruiz
Sent: Tuesday, June 30, 2015 6:27 AM
To: paul@dolkas.net
Subject: [NavList] Re: Hand Bearing Compass Deviation
After some tests and experiments, I am pretty surprised about the sensitive of the hand bearing compass, Hockey Puck, vion mini morin 2000, to the local magnetic fields that cause an excessive deviation.
Usually when I take bearings, I am very careful, and I try not to be under the influence of local mag field. Really I cannot reproduce the error.
I compared the vion with the steering compass at some courses, and the difference is less than 2º.
In one test in land to a distant tower, the bearing changed 15º if I moved only 3 meters, really amazing, and the worst is that I could not identify the source of the deviation.
--
Andrés Ruiz
Navigational Algorithms
http://sites.google.com/site/navigationalalgorithms/
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