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azimuth indexing of beams

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Subject: azimuth indexing of beams
From: (C. Logan Dietz (KE5FI))
Date: Tue, 07 Jan 1997 16:45:12 -0800
Robert Neece wrote:
> I have read with interest the several postings concerning
> ascertainment of true north.  I myself use a method different
> from those described so far.
> My method of indexing rotators, masts, and rotatable antennas to
> compass headings does not depend upon a determination of
> true north and, therefore, avoids compasses, clocks, calculations,
> sun shadows, and the like.
> I simply use a landmark of known (and constant) azimuth, and orient
> my antennas on the mast by sighting them against the landmark.

I have done this before.  It really does not matter which direction it is 
in if the pot in your rotor is linear and clean so you get a smooth 
movement of the direction needle.

Simply point the rotor in the direction of the land mark then sight down 
the boom toward it and adjust the beam.

This works well with TV transmitting towers as they are exactly located 
on the maps.  Draw a line between you and the tower.  Put the hole in one 
of those 99 cent semi-circular plastic thingamajigs with the degrees 
marked on the edge (compass?) get the base parallel to the horizontal 
lines on the map and read the degrees off.

Chuck, KE5FI

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