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#1
May 5th 08, 01:07 PM
posted to rec.radio.amateur.antenna
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Yagi near ground high lobe pattern...
After some time spend with an antenna simulator and changing yagi height
above the virtual simulated ground there seemed to be a minimum of high angle lobes at 80..90 degr. when the antenna height reached 2 wavelength above the virtual ground... This effect probably remain the same in each 2 wavelengths up.. ? Just curious is the effect real, useful or detectable in real world or used somewhere in ham world ? br Kari B |
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#2
May 6th 08, 12:17 AM
posted to rec.radio.amateur.antenna
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Yagi near ground high lobe pattern...
"Kari B" wrote in message ti.fi... After some time spend with an antenna simulator and changing yagi height above the virtual simulated ground there seemed to be a minimum of high angle lobes at 80..90 degr. when the antenna height reached 2 wavelength above the virtual ground... This effect probably remain the same in each 2 wavelengths up.. ? Just curious is the effect real, useful or detectable in real world or used somewhere in ham world ? br Kari B yes, its real and useful if you can control the height of a single antenna. the effect should be periodic more like every half wave in height. |
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