FINAL TUNING
Start by making sure the distance from the loop end to the center of the boom on one side
is the same as the distance on the other side. These distances must be the same. If you move
one, you must move the other. The antenna will not tune correctly if these are not the same.
The antenna must be at least 10 feet off the ground for initial tuning. Mount the antenna on a
temporary mast or other support when checking the SWR
Check the antenna using a SWR analyzer or radio with a good quality wattmeter that
indicates SWR. The antenna should have a SWR dip at or around 50.125 MHz . If you
do not see a dip at all, check all your connections and try again. If the dip is too low in
frequency, then the loop ends should be moved in toward the boom. Remember to move
both sides the same amount. Move them a small amount each time and recheck the SWR.
The dip point should move up as you move the loop ends in toward the boom. Continue
this adjustment until the frequency you desire has the lowest SWR. If the frequency is too
high then move the loop ends out away from the boom in the same manner. Do not tighten
the loop clamps each time you adjust the distance. The loop ends should have enough
friction to remain where they are without the clamps. When your happy with where the
antenna is tuned, then tighten the clamps.
SAME
SAME
Your antenna is now ready for mounting. This antenna is large and too much for one
person to handle. Make sure before you start that you have everything you need and
a friend to help with the installation. Do not attempt to install the antenna alone. Do
not install the antenna in a location where it can come into contact with electrical lines
or any location it could possibly fall into electrical lines.
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