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  1. GregChenco

    Calcul/measurement of coax impedance ?

    Measure the diameter of the dielectric (D) and the diameter of the inner conductor (d) and use the formula: Zo=138*Log10(D/d) and divide this by the square root of the dielectric constant of the dielectric. Most coaxial cables have a polythyene dielectric which has a dielectric constant of...

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