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the radiator needs to be have a tapped coil in series with it. This means breaking the pole, inserting a HEAVY insulator to support the entire thing, and tuning the coil for as close to 50 ohms as you can get. The coil has a tap to ground which has to be adjusted as well as the total overall number of turns. A gamma match is not suitable for matching a 5/8 wave. Gamma matches are used when the feedpoint impedance is lower than the feedline impedance which is not the case when feeding a 5/8 wave.n Is this idea doable....yes. Is it easy and practicable....not really. Make a simple 1/4 wave vertical and you need no matching coil of any sort. Simply adjust the length and be done with it.

[QUOTE="Captain Kilowatt, post: 395155, member: 39"] the radiator needs to be have a tapped coil in series with it. This means breaking the pole, inserting a HEAVY insulator to support the entire thing, and tuning the coil for as close to 50 ohms as you can get. The coil has a tap to ground which has to be adjusted as well as the total overall number of turns. A gamma match is not suitable for matching a 5/8 wave. Gamma matches are used when the feedpoint impedance is lower than the feedline impedance which is not the case when feeding a 5/8 wave.n Is this idea doable....yes. Is it easy and practicable....not really. Make a simple 1/4 wave vertical and you need no matching coil of any sort. Simply adjust the length and be done with it. [/QUOTE]

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