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DISH SETUP: Single sat, Multi-Sat & Motorised
Anti-interference filter for c-band
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<blockquote data-quote="Channel Hopper" data-source="post: 1066525" data-attributes="member: 175144"><p>I don't have images, when I was working in the Middle East the images I sent back of the projects became the property of the parent company.</p><p></p><p>The fencing I saw consisted of thin galvanised steel rods, about 8mm in diameter and spaced about 3cm apart, with supporting horizontal bars every 20cms or so. I estimate the height to be 2.5m</p><p></p><p>The reflective frequency would be based on the minimum wavelength that could pass through the gaps, I doubt the dimensions above would stop unwanted 5GHz radiation completely, perhaps nearer 3GHz but I would have to get the calculator out to verify, though looking at the reflector material on a C band only mesh dish, the gaps are no further apart than 1cm.</p><p></p><p>The following link gives dimensions of a 4-8 GHz yagi antenna, where the spacing is confirmed for minimum frequency resonance as being around the same distance.</p><p></p><p><a href="https://edlib.net/2015/icssccet/ICSSCCET2015027.pdf" target="_blank">https://edlib.net/2015/icssccet/ICSSCCET2015027.pdf</a></p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 1066525, member: 175144"] I don't have images, when I was working in the Middle East the images I sent back of the projects became the property of the parent company. The fencing I saw consisted of thin galvanised steel rods, about 8mm in diameter and spaced about 3cm apart, with supporting horizontal bars every 20cms or so. I estimate the height to be 2.5m The reflective frequency would be based on the minimum wavelength that could pass through the gaps, I doubt the dimensions above would stop unwanted 5GHz radiation completely, perhaps nearer 3GHz but I would have to get the calculator out to verify, though looking at the reflector material on a C band only mesh dish, the gaps are no further apart than 1cm. The following link gives dimensions of a 4-8 GHz yagi antenna, where the spacing is confirmed for minimum frequency resonance as being around the same distance. [URL]https://edlib.net/2015/icssccet/ICSSCCET2015027.pdf[/URL] [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Anti-interference filter for c-band
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