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"you may have seen this one eddie,

5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout | Ham Radio Help Desk
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Hi Bob 85, this is a valid point but shouldn't the 1/4 wave stub be increased in length when matching with a 5/8 wave? the comparison with the 1/2 wave shows the same length stub, i would imagine the stub needs to be increased in length to match correctly to the 5/8 wave radiator, i don't know if this would match but it seems that this is why the 5/8 wave j-pole is slightly out of phase?
Does anyone know if building a j-pole type antennae with 3 stubs or more would be possible? This may result in a more omnidirectional antenna? Perhaps the stubs would have to be shortened? But it could end up with a type of basket around the radiator?

[QUOTE="yogi bear, post: 281402, member: 19344"] "you may have seen this one eddie, 5/8 Wave J-Pole vs. 1/2 Wave J-Pole EZNEC Shootout | Ham Radio Help Desk __________________" Hi Bob 85, this is a valid point but shouldn't the 1/4 wave stub be increased in length when matching with a 5/8 wave? the comparison with the 1/2 wave shows the same length stub, i would imagine the stub needs to be increased in length to match correctly to the 5/8 wave radiator, i don't know if this would match but it seems that this is why the 5/8 wave j-pole is slightly out of phase? Does anyone know if building a j-pole type antennae with 3 stubs or more would be possible? This may result in a more omnidirectional antenna? Perhaps the stubs would have to be shortened? But it could end up with a type of basket around the radiator? [/QUOTE]

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