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80 meter loop structure display This 80 meter loop is actually 288 feet of wire. This is a little long
for 80, 17 and 12 meters, but a little short for 40 and 30 meters and just right for 20, 15 and 10
meters. If we make the loop much longer or shorter, we would end up with the antenna being
unsuitable for some of the bands. At this length, it is a good compromise for all of the bands.
In practice, the shape of the loop will be determined by the location of good supports for the loop
(usually trees). The shape of the loop is not critical at all, my loop is an irregular pentagon and it
seems to get out fine. This model is square, however the feed point has been placed in an odd
location. This avoids the typical patterns of a loop fed at a corner or in the middle and results in
the kind of irregular looking patterns you would expect from a real life loop antenna.
BEFORE YOUR START
CAUTION
WARNING: INSTALLATION OF THIS PRODUCT NEAR POWER LINES IS DANGEROUS.
FOR YUR SAFETY FOLLOW THE INSTALLATION IINSTRUCTIONS.
WARNING: AT NO TIME DURING ASSEMBLY, INSTALLATION, ADJUSTMENT OR
OPERATION SHOULD ANY PART OF THIS PRODUCT BE ALLOWED TO COME INTO
CONTACT WITH ELECTRIC POWER LINES, NOR SHOULD THIS PRODUCT BE
INSTALLED IN SUCH A WAY THAT ANY PART OF IT MAY CONTACT POWER LINES
DURING NORMAL OPERATION OR IN THE EVENT OF STRUCTURAL FAILURE.
FAILURE TO EXERCISE EXTREME CARE IN THIS MATTER CAN RSULT IN DAMAGE TO
PROPERTY, PERSONAL INJURY, OR DEATH.
Loop length formula = 1005/F (MHz). where F is lowest frequency to be used.
For 3.5MHz, Length = 288 feet, for 7.0MHz, Length is 144 feet
