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I'd also think that physically tilting the antenna that much might not
be too much of a trick, and it should give you the tilt you need. As Tom says, it must have a tremendously narrow elevation pattern if you're going to see any significant change with that small amount of tilt. Roy Lewallen, W7EL K7ITM wrote: If it's a single element, how in the world will you ever measure it accurately enough to KNOW what the up-or-down tilt is? That is, the directionality of a simple half-wave dipole just isn't enough to matter when you get down to a couple of degrees. In freespace you MIGHT be able to measure things that closely if you were extremely careful, but over practical ground, I don't believe you have any hope. If it's multiple vertically-stacked elements, then arrange the feed so their currents are shifted in phase a small amount from element to element. A back-of-the-envelope picture and some simple trig should tell you just how much phase shift you should have between adjacent elements. Cheers, Tom |
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