Antenna for DX
The best solution for working with distant correspondents, this application stack (cm . figure 7). A well-tuned stack, for example, 2 antennas on three elements, even with short antennas, such as "Robinson" always wins in the long road toward 7-element wave channel .
To install the distant relationships are widely used directional antennas that emit most of the energy supplied to them in a given direction . Directional antenna systems allow the creation of radiation at low angles to the horizon . This is of particular importance to the implementation of long-distance relationships . short wave absorption in the ionosphere is small, therefore, the intensity of the reflected rays of her space is very high . Through this whole long-distance relationship at short wavelengths by using spatial beams . weak absorption of the spatial beam in the ionosphere and the phenomenon of multiple reflections allow communication short waves at a distance of thousands of kilometers, with a relatively low power transmitter . primary goal in the design and construction of antennas for telecommunications, is the formation of a narrow beam antenna pattern pressed to the horizon and to ensure low losses in the antenna system itself, that is a good efficiency . To achieve good results requires a comprehensive approach to all elements of the system .