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length of wire formula. L - the length of the total dipole antenna in feet ft. G is the conductance in siemens S s is the conductivity in S m L and A keep the same meaning.
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This formula takes into consideration the capacitive end-effect from insulators which shortens the physical length requirement for the equivalent electrical length. This can be derived by taking the figure of 492 seen in the formula above and multiplying it by the typical A or end effect factor of 095. From a purely geometric perspective you could calculate the length using the helical length equation.
468 freq mHz Length feet.
L 468 f. As you realize without knowing the current you cannot apply Ohms Law to derive voltage. Often a formula for the length of a dipole in feet is seen as 468 frequency. The round-trip length is the sum of the positive and the negative wires.
