While horizontal dipoles required two large support masts, this antenna type only needs one large mast. It is therefore widely used by radio amateurs with limited space.^[3] In particular for low frequencies this antenna form is interesting.^[4] The angle of the slope is usually between 45°–60° and the lower end of the wire is at least 1⁄6 wavelength above the electrical ground.^[3]

A sloper is typically fed with a coaxial cable in the center, at the top of the center support mast. At least 1⁄4 of the wavelength of feedline must be at 90° angle to the antenna.^[3] It is also possible to feed the antenna asymmetrically.^[5] Due to the low-angle radiation pattern this antenna has, it performs well for long distance contacts (QSOs) (DX).^[3]

Advantages

References