In a message dated 2/3/2011 1:59:49 A.M. Eastern Standard Time,
k8ri-on-towertalk@tm.net writes:
Roger (K8RI)
|rotate the sensor until you read that direction on the controller.
Unless you have variations in the declination the |reading should keep up.
> (I recommend a north-seeking plastic owl if you have problems finding
true north:-)
>
> 73 de Hans - N2JFS
Roger Et Al.
My idea was to use the magnetic compass as a sensor, not as something
absolute holy grail. Direct the antenna to the north (or to whatever direction
suits you) and rotate the magnetic compass, hopefully mounted on the
rotating part of the antenna installation until it shows north (or whatever
direction you are pointing the antenna) Yeah, you might live in an area with a
fast (!!) change in the declination, but then a magnetic compass is useless
regardless what you try to use it for. Maybe then a GPS could be useful
instead.I think that a magnetic compass would work for the rest, 99% of us
though. (I still recommend a north-seeking plastic owl if you have problems
finding true north:-)
Hans - N2JFS
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