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Bob, in looking at what I have here, I'm pretty sure the hub you have has all of the parts in the correct location. I took them off before and I could have put them back on wrong. However, I seem to recall there are some retention marks (dimples) on the bracket that shows where the mast goes. Check and see if the insulators will mount the other way, so it looks like SD'rs modified AP and then check the spacing if you would. I suspect it will change with a change in position.

I think you may be right about improving symmetry and fixing the lopsided pattern a bit, by using an extension of the mast instead of offsetting the top element as it is on the AP. I never did try that last summer, like I promised. If you'll look in the Astro Beam manual you will notice that the driver stud is offset on the plate adapter bracket and it looks to be addressing this issue, by placing the top 1/4 wave element directly over the lower mast with the offset. Those Avanti guys were really sharp.

<blockquote data-quote="Marconi" data-source="post: 208937" data-attributes="member: 903">Bob, in looking at what I have here, I&#039;m pretty sure the hub you have has all of the parts in the correct location. I took them off before and I could have put them back on wrong. However, I seem to recall there are some retention marks (dimples) on the bracket that shows where the mast goes. Check and see if the insulators will mount the other way, so it looks like SD&#039;rs modified AP and then check the spacing if you would. I suspect it will change with a change in position.&nbsp;I think you may be right about improving symmetry and fixing the lopsided pattern a bit, by using an extension of the mast instead of offsetting the top element as it is on the AP. I never did try that last summer, like I promised. If you&#039;ll look in the Astro Beam manual you will notice that the driver stud is offset on the plate adapter bracket and it looks to be addressing this issue, by placing the top 1/4 wave element directly over the lower mast with the offset. Those Avanti guys were really sharp.</blockquote>

[QUOTE="Marconi, post: 208937, member: 903"] Bob, in looking at what I have here, I'm pretty sure the hub you have has all of the parts in the correct location. I took them off before and I could have put them back on wrong. However, I seem to recall there are some retention marks (dimples) on the bracket that shows where the mast goes. Check and see if the insulators will mount the other way, so it looks like SD'rs modified AP and then check the spacing if you would. I suspect it will change with a change in position. I think you may be right about improving symmetry and fixing the lopsided pattern a bit, by using an extension of the mast instead of offsetting the top element as it is on the AP. I never did try that last summer, like I promised. If you'll look in the Astro Beam manual you will notice that the driver stud is offset on the plate adapter bracket and it looks to be addressing this issue, by placing the top 1/4 wave element directly over the lower mast with the offset. Those Avanti guys were really sharp. [/QUOTE]

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