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

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!! '''System impedances - Elements + Transformation Lines''' For a good match the four outputs of the system '''must be terminated with 100 Ohms'''. The radiators are connected to them via 75Ω-λ/4-lines transforming the''' 50 Ohm-feed-impedance of the radiators to the required 100 Ohms'''. If the feed-impedance of the radiator is '''different from 50 Ohms, it must be transformed to 50 ± j0 Ohms for an optimal match'''. The λ/4-lines should be made from coaxial cable with a velocity factor ≥ 0.7, otherwise a radiator distance of λ/4 cannot be obtained. *''' For elevated radial elements you can obtain 50 Ohm feed impedance and use 75 Ohms coax for Transformation Lines''' *''' For ground mounted elemets with great ground system the impedance is around 36 Ohms. There 60 Ohms coax cable should be used for Transformation Lines or tune impedance to 50 Ohms in feed point. '''
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