TX antenna - 4SQ-8DIR NEW 8 directions 4SQ antenna

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!!''' Setup notes by Franz DF6QV ''' Put the box in the center of the planned 4-square and lay the phase lines out in the desired directions. Keep them at an angle of 90 degrees to each other. If using PE insulated lines the positions of the radiators are fixed by their ends, but then the spacing is not quite λ/4. With foam-insulated lines the positions of the radiators have to be chosen at a distance of 0,175 λ (0.25 λ / 1.41) from the center for a λ/4-spacing. Before connecting the radiator to the transformation lines each radiator has to be checked for resonance on the operating frequency with a suitable analyzer. Important: all other radiators are not connected to their feed-lines! After connecting the feed-lines you can measure the transformed feed-point impedance of the antenna at their ends in the center of the 4-square.'''It should be about 100 Ohms. Values between 90 and 110 Ohms are acceptable. '''To check the display on the remote control box, remove all λ/4-lines from the phasing-box; only the built-in dummy load is effective. As the output ports are open, the input power is totally reflected into the dummy load. You can check this by sending 100 watts. The instrument should then read about 0 dB. The SWR remains low in this test!
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