You can also work out what directions your guy wires point, or even what
bearing the sides of the tower are at, both of those are easy to use either
from the ground or while up the tower to align the antenna on the rotor.
Plot plans for your land or survey data for building permits for your house
should give you sufficiently accurate bearings in cases where you can't see
distant objects. Remember, unless you are doing moon bounce you don't need
accuracy of much more than 10-20 degrees for most hf antennas.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Brown
Sent: Monday, January 23, 2017 20:31
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Strange behavior
On Mon,1/23/2017 8:32 AM, Michael Clarson wrote:
> David's method of using a topo map and sighting an object is the best way.
That works IF you can see the distant object. My towers are in a dense
redwood forest. I established true north from the shadow of the tower at
solar noon using online tables by date, on a day when the sun got through
the trees to cast a shadow at noon, and laid down a log along the shadow.
https://www.esrl.noaa.gov/gmd/grad/solcalc/
73, Jim K9YC
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