Alpha Delta DX-A
twin sloper antenna for 160, 80 and 40 meters
Alpha Delta Twin Sloper antennas combine the DX effectiveness of a quarter wave with the wide bandwidth of a half-wave dipole. The DX-A is designed to cover 160, 80 and 40 meters.
One arm is 20 meters long, while the other is 18.2 meters long. Sloper antennas are installed like an inverted V with a ground return made through the metal tower or pole. These antennas use stainless steel hardware, copper wire and efficient Alpha Delta "Iso-Res" RF winding coils.
Twin sloper antennas are designed for use on un-guyed towers with metal guy wires, with a Yagi at the top. The Yagi acts as a capacitive hat and helps tune the two slopers.
It is possible that the introduction of sloper antennas into a tower system that has other wire antennas connected may cause a slight detuning of the other antennas. Some installations require the use of a tuner.
