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Old January 4th 10, 09:54 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jun 2006
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Default Matching impedance on 900 MHz Yagi stacking harness

Not a huge difference.. you have to be 45 degrees away before it's 10%
different. If you were using directional antennas, the gain would be way down
by the time you were that far off boresight, so it would be a non-issue.


I suspect that other factors would be bigger in importance.


I agree that, with a high gain antennas, it makes almost no difference at angles
within the antenna main lobe. I could make more difference with regard to the
susceptibility to strong interfering signals coming far away from the boresight,
but this may be quite a theoretical case.

It could be more important in the case of two crossed dipoles (turnstile)
typically used with low-orbiting satellites, but even in that case differences
may be hardly noticeable.

In any case it is good to keep that in mind.

73

Tony I0JX

 
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