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It should be fairly simple to analyze the antenna, determine how it's constructed. Is it a simple fraction of a wave length (1/4, 1/2, 5/8, etc.), or an array of any of those? Does it use an impedance matching scheme/device of some sort?
Then it should be a fairly simple scaling for a different frequency.
Once you are at that point try plugging the numbers into that antenna modeling program. It won't come out exactly by any means, but it would get you into the ball-park where you can optimize for things.
I don't see any copy write or patent infringements in that, it's a very typical/normal practice.
- 'Doc

[QUOTE="W5LZ, post: 400420, member: 129"] It should be fairly simple to analyze the antenna, determine how it's constructed. Is it a simple fraction of a wave length (1/4, 1/2, 5/8, etc.), or an array of any of those? Does it use an impedance matching scheme/device of some sort? Then it should be a fairly simple scaling for a different frequency. Once you are at that point try plugging the numbers into that antenna modeling program. It won't come out exactly by any means, but it would get you into the ball-park where you can optimize for things. I don't see any copy write or patent infringements in that, it's a very typical/normal practice. - 'Doc [/QUOTE]

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