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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
..and so it begins ..
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<blockquote data-quote="Vipersan" data-source="post: 857085" data-attributes="member: 325666"><p>..notice on the scan above how the open feed responds in both Horizontal and Vertical to the data peaks ..</p><p>In other words ..it is Still basically a circular polarised construction to the SL3 and open feed.</p><p>BUT also note how the middle peak is predominant in H (blue) ..whereas the 3rd peak is predominant in the Vertical (red)</p><p>Which is correct as 18411 IS Horizontal ... & 18509 IS Vertical ..</p><p>So the bias of the angled positioning of the SL3 is effective ..and resolution of Linear signals IS possible ..though only because there are no H and V signals using the same frequencies.</p><p>It works ..that's the main thing.</p><p>..and you can use a slotted feed to increase the bias effect ..but at a cost ..</p><p>ie reducing overall signal gain.</p><p></p><p>So ..if you want a cheap way into ka (low and mid band circular or linear) ..then import an SL3 & SUP-2400 (there is a mod to get the 2400 on permantly)..they are cheap enough ..and set about testing your destruction and re-construction skills.</p><p>Everything you need is in this thread.</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 857085, member: 325666"] ..notice on the scan above how the open feed responds in both Horizontal and Vertical to the data peaks .. In other words ..it is Still basically a circular polarised construction to the SL3 and open feed. BUT also note how the middle peak is predominant in H (blue) ..whereas the 3rd peak is predominant in the Vertical (red) Which is correct as 18411 IS Horizontal ... & 18509 IS Vertical .. So the bias of the angled positioning of the SL3 is effective ..and resolution of Linear signals IS possible ..though only because there are no H and V signals using the same frequencies. It works ..that's the main thing. ..and you can use a slotted feed to increase the bias effect ..but at a cost .. ie reducing overall signal gain. So ..if you want a cheap way into ka (low and mid band circular or linear) ..then import an SL3 & SUP-2400 (there is a mod to get the 2400 on permantly)..they are cheap enough ..and set about testing your destruction and re-construction skills. Everything you need is in this thread. rgds VS [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
..and so it begins ..
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