[Antennas] Using GeoClock To Find True North

[Alan C. Zack]

Merv,
When you saw the shadow of your tower does that mean Winter will last
another month before it becomes Spring and you have to worry about it?

Merv Stump wrote:
> 
> The ARRL Antenna Book describes a method for finding true north based on the
> fact that the sun is directly south at 12:00 noon local time.  This is of
> course only true if your qth is exactly on the longitudinal meridian on
> which your time zone is based (e.g. 75 degrees for EST); and on the dates of
> the summer and winter solstice.  For any other location and on any other
> dates, corrections have to be applied to determine the exact time at which
> the sun is in the south.  The antenna book explains how to make these
> corrections.  However, I just noticed that GeoClock gives you the azimuth
> and elevation angles for the sun at all times.  When the azimuth angle is
> 180 degrees, the sun is in the south.  Today at 12:08:40 I ran to see if my
> boom lined up with the shadow of my tower.  It's a little off, and now I'll
> have to worry about it until spring.
> 
> Regards, Merv
> 
> - - -
> 
> Your moderator for this list is:
> Larry Wilson KE1HZ antennas-owner@mailman.qth.net
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