Or a compass laying on a camera tripod, and an up-to-date magnetic
declination map (Google it).
73, Mike
www.w0btu.com
On Fri, Nov 1, 2013 at 12:12 PM, Charlie Cunningham <
charlie-cunningham@nc.rr.com> wrote:
> ... by using a solar determination of true North.
> The way that I do it for my antenna arrays is:
>
> 1.0 Use a weather site to determine local sunrise and sunset times for
> your
> location on the day that you are going to make the determination.
>
> 2.0 Split the difference to determine the time for your local solar noon.
>
> 3.0 At the time of your local solar noon, a vertical shaft (determined by
> plumb line or spirit level) will cast a shadow that points to true North.
> (Best done on sunny day of course!)
>
_________________
Topband Reflector
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