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randall1959

Why is the connector offset on the GP?

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Is there truly a top and bottom to the GP Patch or can you have it upside down, for instance? Also, why not have the connector in the center of the antenna? Is there a reason it's off to one side? Thanx.

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The RF feedpoint position determines the impedance of the antenna. It is a VERY critical placement.

The polarization of the antenna is determined by which end of the antenna is at the top. Tests at the field will help determine which way is best for you. But, I suggest that you start with the end that is marked "Top Front" and go from there.

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Ok, thanx Mr RC CAM. I was wondering how that worked. I didn't realise that there was a top or bottom to the GP Patch. I just figured that your directions were for building the antenna and not for it's actual operation. I was thinking about trying it upside down on my helmet receiver combo so that it wouldn't stick up so far. Thanx once again

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Turning it 180 deg will not effect the performance, just dont turn it 90.

Unless I have missed something ?

Terry

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That's what I was thinking. It should work the same upside down as right side up was my idea. I just haven't had time to try it and see what happens.

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The GPP antenna is nearly symmetrical in each plane (just consider it to be a non-issue). Vert vs. Horiz Polarization is at 90 degrees.

Usual installations will want "Top" to be at the top. Some will work better with Top rotated 90 degrees. This is discussed in the project page.

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