It is hold that one can increase static capacitance, reduce mode of input reactance and enhance the antenna gain by increasing down lead wires, their distances or lengthening the top loading wires.

In the course of medium wastage measure, the sundry capacitance and high voltage down-lead parasitical capacitance greatly affect the veracity of the result.

The affection of parameter variation of down lead wires and top loading wires on effective height, radiation pattern, input reactance, radiation resistor and static capacitance is discussed.