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Fringe Reception Reports
70W C-Band
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<blockquote data-quote="John" data-source="post: 1150751" data-attributes="member: 175005"><p>Ok, starting off then - three grabs, Original 60mm I/D feed throat / 41mm I/D throat sleeve / 56.3mm I/D throat sleeve, sleeve's made from available scrap box metals. The experiment with 41mm I/D sleeve works but in the wrong frequency range. Anything below 4.5Ghz is dramaticaly reduced to the point of signal loss from 3.6 to 4.5GHz - signal very slightly degraded from 4.5 to 4.8GHz but getting through.</p><p>I'm pretty sure that the 56.3mm I/D sleeve <em><span style="color: rgb(41, 105, 176)">marginally</span></em> reduced the 5G signals without noticeably degrading 3.6 to 4.8GHz signal levels.</p><p>It would be interesting to try a 55mm I/D sleeve at some point but would have to buy in the material.</p><p>Looking at the feed entry pic, it shows how the sleeve will slide in and butt up to the Circular poloriser front input face - the Norsat 8000RI 3.6 to 4.8GHz is at RHC reception.</p><p>It passed away a few interesting hours to satisfy the curiousity i suppose but 5G interference, depending how close to the source you are is always going to be a tough one to eliminate successfully , if at all.</p><p>It might be interesting for people using an lnbf to experiment with inserting various sleeve pieces - you never know.</p><p>........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................</p><p></p><p>[ATTACH=full]151239[/ATTACH][ATTACH=full]151240[/ATTACH]</p></blockquote><p></p>
[QUOTE="John, post: 1150751, member: 175005"] Ok, starting off then - three grabs, Original 60mm I/D feed throat / 41mm I/D throat sleeve / 56.3mm I/D throat sleeve, sleeve's made from available scrap box metals. The experiment with 41mm I/D sleeve works but in the wrong frequency range. Anything below 4.5Ghz is dramaticaly reduced to the point of signal loss from 3.6 to 4.5GHz - signal very slightly degraded from 4.5 to 4.8GHz but getting through. I'm pretty sure that the 56.3mm I/D sleeve [I][COLOR=rgb(41, 105, 176)]marginally[/COLOR][/I] reduced the 5G signals without noticeably degrading 3.6 to 4.8GHz signal levels. It would be interesting to try a 55mm I/D sleeve at some point but would have to buy in the material. Looking at the feed entry pic, it shows how the sleeve will slide in and butt up to the Circular poloriser front input face - the Norsat 8000RI 3.6 to 4.8GHz is at RHC reception. It passed away a few interesting hours to satisfy the curiousity i suppose but 5G interference, depending how close to the source you are is always going to be a tough one to eliminate successfully , if at all. It might be interesting for people using an lnbf to experiment with inserting various sleeve pieces - you never know. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ [ATTACH type="full"]151239[/ATTACH][ATTACH type="full"]151240[/ATTACH] [/QUOTE]
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