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DB as noted above, I posted my model may be a little short of specs and I've analyzed our models below, and the model results are very similar. I used a 100 watts of power for the model and our maximum gain currents at the center of the top 1/2 wave portion of the radiator are almost identical at near 1.30 (A), assuming that I also changed my Ground description to "Poor or Very Poor," like you note. My model does not however show the insignificant skewing you mentioned, and my idea of a Trombome matcher added to an end fed, mismatched 5/8 wave vertical monopole is skewed to one side just like you...but it does work to tune.

I wish I could get my model nearer a perfect match like you did...and I would feel little better.

[ATTACH=full]18964[/ATTACH]

Maybe if I extended my radiator a few inches I would get a better match and Bandwidth result, and our gain figures might be identical.

DB, I think our results tend to indicate just how sensitive and accurate to specs this antenna software can be. Even though real world testing is always recommended to be sure...I think we did pretty good on this project.

BTW, how high did you set your model?

<blockquote data-quote="Marconi" data-source="post: 564711" data-attributes="member: 903">DB as noted above, I posted my model may be a little short of specs and I&#039;ve analyzed our models below, and the model results are very similar. I used a 100 watts of power for the model and our maximum gain currents at the center of the top 1/2 wave portion of the radiator are almost identical at near 1.30 (A), assuming that I also changed my Ground description to &quot;Poor or Very Poor,&quot; like you note. My model does not however show the insignificant skewing you mentioned, and my idea of a Trombome matcher added to an end fed, mismatched 5/8 wave vertical monopole is skewed to one side just like you...but it does work to tune.I wish I could get my model nearer a perfect match like you did...and I would feel little better.[ATTACH=full]18964[/ATTACH]Maybe if I extended my radiator a few inches I would get a better match and Bandwidth result, and our gain figures might be identical.DB, I think our results tend to indicate just how sensitive and accurate to specs this antenna software can be. Even though real world testing is always recommended to be sure...I think we did pretty good on this project.BTW, how high did you set your model?</blockquote>

[QUOTE="Marconi, post: 564711, member: 903"] DB as noted above, I posted my model may be a little short of specs and I've analyzed our models below, and the model results are very similar. I used a 100 watts of power for the model and our maximum gain currents at the center of the top 1/2 wave portion of the radiator are almost identical at near 1.30 (A), assuming that I also changed my Ground description to "Poor or Very Poor," like you note. My model does not however show the insignificant skewing you mentioned, and my idea of a Trombome matcher added to an end fed, mismatched 5/8 wave vertical monopole is skewed to one side just like you...but it does work to tune. I wish I could get my model nearer a perfect match like you did...and I would feel little better. [ATTACH=full]18964[/ATTACH] Maybe if I extended my radiator a few inches I would get a better match and Bandwidth result, and our gain figures might be identical. DB, I think our results tend to indicate just how sensitive and accurate to specs this antenna software can be. Even though real world testing is always recommended to be sure...I think we did pretty good on this project. BTW, how high did you set your model? [/QUOTE]

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