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That's not how antennas work NB.

The example you posted is not a 2 x 1/2wave dipole.
A 2 x1/2 wave dipole has no deconstructive currents & provides about 2db gain over a single dipole

Gain increases as you increase length beyond 2 x1/2 wave up to ( 2 x.64 wave the highest gain vertical without phasing ).
any longer & the out of phase currents neutralise the benefit of increased spacing for the outer 1/2wave portions of radiator. high angle lobes start to dominate.
Just like a vertical groundplane.

Im equally surprised that you think anything over 1/4 wave per leg generates deconstructive currents or that there is phase correction needed on a 5/8 dipole.

[QUOTE="bob85, post: 572600, member: 18"] That's not how antennas work NB. The example you posted is not a 2 x 1/2wave dipole. A 2 x1/2 wave dipole has no deconstructive currents & provides about 2db gain over a single dipole Gain increases as you increase length beyond 2 x1/2 wave up to ( 2 x.64 wave the highest gain vertical without phasing ). any longer & the out of phase currents neutralise the benefit of increased spacing for the outer 1/2wave portions of radiator. high angle lobes start to dominate. Just like a vertical groundplane. Im equally surprised that you think anything over 1/4 wave per leg generates deconstructive currents or that there is phase correction needed on a 5/8 dipole. [/QUOTE]

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