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Example: To use an antenna from 80 meters to 10 meters, the feedline should be in odd 1/8
wavelength multiples on 80 meters.
The 80 meter band starts at 3.5 MHz. Therefore, 123/3.5 = 35.1.
DX Engineering feedline has a VF of 0.88, so 35.1 x 0.88 = 30.9 ft. per 1/8-wavelength.
If 90 feet is required to get to your operating position, the nearest odd multiple 1/8 wavelength
length is 92.7 feet (30.9 x 3).
If you needed 110 feet, you would have to add to the feedline to achieve 154.5 feet (30.9 x 5) to
maintain the odd 1/8th multiple rule for length.
If you need to splice ladder line together for longer lengths, use the DXE-LLC-1P Ladder Line
Coupler.
If you have excess ladder line, it can be zigzagged while suspended in air, but it can't be closer than
a few conductor widths to metallic objects and cannot be coiled or laid on the ground. If it is
necessary to pass closely to a metallic object, twist the line to partially balance the effect on both
sides of the feedline.
Sample Dipole Configurations
Using the EZ-Build® Universal Wire Antenna Hardware Kits will allow you to build many
types of wire and ladder line antenna configurations. Consult a reliable text such as the "ARRL
Antenna Book" which is available from DX Engineering for other types of wire antennas (Off
Center Fed, Loop and many more).
Attachment of other wire type antennas to the EZ-BUILD® Universal Wire Antenna Kit is
basically the same as described. The following pictures show some typical applications.
Single Wire Element
Typical Single Band Dipole (not to scale)
Coaxial Feed
DX Engineering Coaxial Stub & Strain Relief
DX Engineering UV Resistant Antenna Wire
UV Resistant Support Rope
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