[Antennas] Using GeoClock To Find True North

[Merv Stump]

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