Antenna design Double square. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Antennas. Technology
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The appearance of the "double square" antenna mount of the "hedgehog" type is shown in the figure. The basis of the design is four five-meter pine slats 1-4. They are not interrupted in the center, but run tangentially to the mast 5. Each rail consists of three identical segments with a diameter of 35 mm, connected end-to-end.
The design of the knot is supplemented to the size of a square of a twenty-meter range with spruce (bamboo, walnut, etc.) rods about two meters long, attached to the ends of the rails with two clamps made of thin steel.
The entire assembly is fastened with four steel corners 6 and two traverses 7 (steel corner with a section of 35x35 mm). The traverses are attached to the mast with U-shaped studs, to the corners 6 - with bolts or welding.
Author: N. Smirnov (ex UA3VBA); Publication: N. Bolshakov, rf.atnn.ru
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