The most complete line of base antennas, with superior technical and mechanical characteristics, such as DJS Direct Joint System. This mark indicates antennas with a direct junction system which gives, in addition to external protection, a solid structure as for systems composed of a single element. The watertightness of the joints of the elements is ensured by ring seals. The external protection prevents oxidation of the internal radiant elements. While with the symbol A.D the antennas shorted to ground for direct current. The radiating element, the one placed inside the antenna, is directly grounded in order to protect the equipment from overcurrents and electrostatic discharges during thunderstorms. All antennas have an impedance of 50Ω, with VSWR better than 1.5, and can be fixed to a.
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