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Hi The DB... I still need to read through more of the above when time permits but spotted your question. Well.... no near or far field ground reflections for a start and it is like having an antenna in an infinite void. I imagine it was because some antennas have greater influence from ground than others and that "focus gain" is not coming from magical extra few meters of wire added on top because of the physical size itself ? And maybe to demonstrate the out of phase currents in a 5/8 subtracting gain from the pattern without the constructive summation from the phase inversion in the ground of the out of phase portion.

I also was thinking regards current focus I imagine this is why we call alternating electrical energy flows as AC and not AV.... even though they both have to co-exist.

As an aside: Just to add a further thing with models I recently discovered that concrete fence posts usually have multiple thick steel wires in them. Not helpful to SWR or radiation patterns ! So many obstacles some not even immediately evident, making a model a purely best case scenario. Many people's ground has their house in between it and the antenna.

<blockquote data-quote="TheBlaster" data-source="post: 777395" data-attributes="member: 58745">Hi The DB... I still need to read through more of the above when time permits but spotted your question. Well.... no near or far field ground reflections for a start and it is like having an antenna in an infinite void. I imagine it was because some antennas have greater influence from ground than others and that &quot;focus gain&quot; is not coming from magical extra few meters of wire added on top because of the physical size itself ? And maybe to demonstrate the out of phase currents in a 5/8 subtracting gain from the pattern without the constructive summation from the phase inversion in the ground of the out of phase portion.I also was thinking regards current focus I imagine this is why we call alternating electrical energy flows as AC and not AV.... even though they both have to co-exist.As an aside: Just to add a further thing with models I recently discovered that concrete fence posts usually have multiple thick steel wires in them. Not helpful to SWR or radiation patterns ! So many obstacles some not even immediately evident, making a model a purely best case scenario. Many people&#039;s ground has their house in between it and the antenna.</blockquote>

[QUOTE="TheBlaster, post: 777395, member: 58745"] Hi The DB... I still need to read through more of the above when time permits but spotted your question. Well.... no near or far field ground reflections for a start and it is like having an antenna in an infinite void. I imagine it was because some antennas have greater influence from ground than others and that "focus gain" is not coming from magical extra few meters of wire added on top because of the physical size itself ? And maybe to demonstrate the out of phase currents in a 5/8 subtracting gain from the pattern without the constructive summation from the phase inversion in the ground of the out of phase portion. I also was thinking regards [I]current focus[/I] I imagine this is why we call alternating electrical energy flows as AC and not AV.... even though they both have to co-exist. As an aside: Just to add a further thing with models I recently discovered that concrete fence posts usually have multiple thick steel wires in them. Not helpful to SWR or radiation patterns ! So many obstacles some not even immediately evident, making a model a purely best case scenario. Many people's ground has their house in between it and the antenna. [/QUOTE]

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