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1993-05-14
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37 lines
Subject: Field day, push-up masts and tower sections
More times than not we end up running our field day operations
from places that are not quite the greatest locations for antennas.
With this in mind the field day team must plan ahead by using the
good ole push-up mast. They are easy to tote to the site and set-
up. Another item is the Rohn tower section. Mounted to a piece of
plywood with a mounting plate and guy lines to support the tower
sections. A three section tower is easy to assemble and tilt up with
just a few amateurs. Add a mast and an antenna and up it goes.
Looking at the emergency aspect of operation, a tower maybe a
bit tough to cart into a disaster area where the push-up mast would
prove a better choice. The mast can be secured at the bottom using a
spare tire and clamp/flange. Guying the mast is a must.
The mast can be stored in a 4-in PVC pipe with screw on caps as
discussed earlier. Handles can be attached for ease of carry.
Another concept is the crank-up tower mounted to the bumper of a
pick-up or van. The tower is slid back to the half way point and
then tilted up. A step ladder allows the attachment of an antenna or
used for tuning. Also this set-up allows the amateurs to attach the
antenna before the tower is raised when using a whip, wire antenna,
or aluminum dipole antenna.
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I hope some of this postings have helped you with concepts used
during field day and in emergency operations. See you this field
day from Cape Canaveral Air Force Station operating as K4FD.
-WS