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Alexis, I added a 9' foot long horizontal beam element 11' feet away and at the same height as the radial loop on my NV4K model.

This idea is similar to what your noted above, albeit is not a Mosley Yagi. I wanted to see if this horizontal metal element would have any effect on the pattern and match for the Vector...even thought there should be about <>20 db polarity difference in the radiated effects between these elements.

The model in the PDF file below shows the element hanging in Free Space about 10' feet away form the Vector loop. There is no noticeable difference to be noted in the Vector pattern, they overlay exactly as noted in the overlay image. There is only a very slight difference to be noted in the matching results in the 2 source data reports for these two models.

What did you do about this problem when you had your SP500 with long ground plane radials?

If you're seeing something going on with the beam as you rotate it, it has been my experience...that could also notice that happening a little with nothing around the beam installation, and just rotating the beam. There may be a little more difference on the beam than you see on the Vector however. I don't think that is your problem with this Vector, but that is just a guess.

<blockquote data-quote="Marconi" data-source="post: 746174" data-attributes="member: 903"> Alexis, I added a 9&#039; foot long horizontal beam element 11&#039; feet away and at the same height as the radial loop on my NV4K model. This idea is similar to what your noted above, albeit is not a Mosley Yagi. I wanted to see if this horizontal metal element would have any effect on the pattern and match for the Vector...even thought there should be about &lt;&gt;20 db polarity difference in the radiated effects between these elements.The model in the PDF file below shows the element hanging in Free Space about 10&#039; feet away form the Vector loop. There is no noticeable difference to be noted in the Vector pattern, they overlay exactly as noted in the overlay image. There is only a very slight difference to be noted in the matching results in the 2 source data reports for these two models.What did you do about this problem when you had your SP500 with long ground plane radials?If you&#039;re seeing something going on with the beam as you rotate it, it has been my experience...that could also notice that happening a little with nothing around the beam installation, and just rotating the beam. There may be a little more difference on the beam than you see on the Vector however. I don&#039;t think that is your problem with this Vector, but that is just a guess. </blockquote>

[QUOTE="Marconi, post: 746174, member: 903"] [SIZE=5] Alexis, I added a 9' foot long horizontal beam element 11' feet away and at the same height as the radial loop on my NV4K model. This idea is similar to what your noted above, albeit is not a Mosley Yagi. I wanted to see if this horizontal metal element would have any effect on the pattern and match for the Vector...[B]even thought there should be about <>20 db polarity difference in the radiated effects between these elements.[/B] The model in the PDF file below shows the element hanging in Free Space about 10' feet away form the Vector loop. There is no noticeable difference to be noted in the Vector pattern, they overlay exactly as noted in the overlay image. There is only a very slight difference to be noted in the matching results in the 2 source data reports for these two models. [B]What did you do about this problem when you had your SP500 with long ground plane radials?[/B] [B]If you're seeing something going on with the beam as you rotate it, it has been my experience...that could also notice that happening a little with nothing around the beam installation, and just rotating the beam. There may be a little more difference on the beam than you see on the Vector however. I don't think that is your problem with this Vector, but that is just a guess. [/B][/SIZE] [/QUOTE]

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