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I was able to reformat the picture size so it can be posted here. Unfortunately I don't think it's much help in determining the phase here. You'll notice the pink current line is on the same side of the main radiator at the top and bottom nodes. I know that's not right because anytime the radiator is longer then 1/2 wave, a phase inversion must begin towards the feed point. At one time I thought I had EZNEC displaying this current correctly.

I think this mysterious "energy" on the cone is really not much different then the currents we would find on the radials of a typical ground plane. The key difference is due to the longer main radiator which in itself creates a condition where it is beneficial to allow them to radiate in nearly the same vertical plane as the main radiator. Furthermore, by sweeping them upwards against the main radiator we confine the out of phase portion of the lower main radiator.

This allows the vertical radiator to go through a 90 degree phase shift BEFORE it's allowed to begin radiating. That key factor is what allows the 1/4 wave cone to be in phase with the top 1/2 wave. It's not the phase on the cone that is being shifted. The phase that has been allowed to radiate on the vertical radiator is what has been altered by the cone. I hope this helps.

<blockquote data-quote="Shockwave" data-source="post: 385181" data-attributes="member: 10882">I was able to reformat the picture size so it can be posted here. Unfortunately I don&#039;t think it&#039;s much help in determining the phase here. You&#039;ll notice the pink current line is on the same side of the main radiator at the top and bottom nodes. I know that&#039;s not right because anytime the radiator is longer then 1/2 wave, a phase inversion must begin towards the feed point. At one time I thought I had EZNEC displaying this current correctly.I think this mysterious &quot;energy&quot; on the cone is really not much different then the currents we would find on the radials of a typical ground plane. The key difference is due to the longer main radiator which in itself creates a condition where it is beneficial to allow them to radiate in nearly the same vertical plane as the main radiator. Furthermore, by sweeping them upwards against the main radiator we confine the out of phase portion of the lower main radiator.This&nbsp; allows the vertical radiator to go through a 90 degree phase shift BEFORE it&#039;s allowed to begin radiating. That key factor is what allows the 1/4 wave cone to be in phase with the top 1/2 wave. It&#039;s not the phase on the cone that is being shifted. The phase that has been allowed to radiate on the vertical radiator is what has been altered by the cone. I hope this helps.</blockquote>

[QUOTE="Shockwave, post: 385181, member: 10882"] I was able to reformat the picture size so it can be posted here. Unfortunately I don't think it's much help in determining the phase here. You'll notice the pink current line is on the same side of the main radiator at the top and bottom nodes. I know that's not right because anytime the radiator is longer then 1/2 wave, a phase inversion must begin towards the feed point. At one time I thought I had EZNEC displaying this current correctly. I think this mysterious "energy" on the cone is really not much different then the currents we would find on the radials of a typical ground plane. The key difference is due to the longer main radiator which in itself creates a condition where it is beneficial to allow them to radiate in nearly the same vertical plane as the main radiator. Furthermore, by sweeping them upwards against the main radiator we confine the out of phase portion of the lower main radiator. This allows the vertical radiator to go through a 90 degree phase shift BEFORE it's allowed to begin radiating. That key factor is what allows the 1/4 wave cone to be in phase with the top 1/2 wave. It's not the phase on the cone that is being shifted. The phase that has been allowed to radiate on the vertical radiator is what has been altered by the cone. I hope this helps. [/QUOTE]

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