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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