NOAA and other sites tell how to determine true North. I used one of them to
determine Local Apparent Noon on a sunny day and then marked where the shadow
of my tower was at that time = True North.
73, alan K9MBQ
-----Original Message-----
From: <john@kk9a.com>
Sent: Apr 7, 2025 3:26 PM
To: <towertalk@contesting.com>
Subject: [TowerTalk] Laying out 4 square
I hate to bring up the true north subject and I know that it is not super
critical with a four square but I was wondering if there is an app or a some
semi-accurate modern way to layout a four square instead of a compass and
tape measure. My phone's (Android Samsung S23) compass app shows true north
however I get varying results, I supposed depending on calibration and
perhaps how level the phone is. I also tried a GPS coordinate app to
layout the pattern but it shows an accuracy of 12 feet. In actuality it was
4' different between points than my tape measure.
John KK9A
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