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Homer, my S4 and the gamma off of an old Vector both show the top bracket to be 6" center or rod to center of radiator. The radials are also 6" away from the radiator at the dog bone bracket, so the gamma and the radials are in the same plane as you suggest at that point.

The only thing I see that you might wish to considered if things don't work out with the match, might be due to the increased diameter of the gamma at the bottom of the tube...where you're using the larger diameter copper hardware to connect things. Among other things, the transformation ratio of the gamma match is affected by the length of the rod, the spacing of the rod from the antenna, and the ratio of the diameter of the rod to that of the tube element and the radiator elements. In the case of the Sigma4/Vector the radials also come into play.

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<blockquote data-quote="Marconi" data-source="post: 391060" data-attributes="member: 903">Homer, my S4 and the gamma off of an old Vector both show the top bracket to be 6&quot; center or rod to center of radiator. The radials are also 6&quot; away from the radiator at the dog bone bracket, so the gamma and the radials are in the same plane as you suggest at that point. &nbsp;The only thing I see that you might wish to considered if things don&#039;t work out with the match, might be due to the increased diameter of the gamma at the bottom of the tube...where you&#039;re using the larger diameter copper hardware to connect things. Among other things, the transformation ratio of the gamma match is affected by the length of the rod, the spacing of the rod from the antenna, and the ratio of the diameter of the rod to that of the tube element and the radiator elements. In the case of the Sigma4/Vector the radials also come into play.&nbsp;[ATTACH]8317[/ATTACH]&nbsp;[ATTACH]8318[/ATTACH]</blockquote>

[QUOTE="Marconi, post: 391060, member: 903"] Homer, my S4 and the gamma off of an old Vector both show the top bracket to be 6" center or rod to center of radiator. The radials are also 6" away from the radiator at the dog bone bracket, so the gamma and the radials are in the same plane as you suggest at that point. The only thing I see that you might [B][I]wish to considered[/I][/B] if things don't work out with the match, might be due to the increased diameter of the gamma at the bottom of the tube...where you're using the larger diameter copper hardware to connect things. Among other things, the transformation ratio of the gamma match is affected by the length of the rod, the spacing of the rod from the antenna, and the ratio of the diameter of the rod to that of the tube element and the radiator elements. In the case of the Sigma4/Vector the radials also come into play. [ATTACH]8317.vB[/ATTACH] [ATTACH]8318.vB[/ATTACH] [/QUOTE]

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