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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: 856282" data-attributes="member: 325666"><p>Ok ..Ocko was a longshot ..with this modified setup ..and such a low signal ..</p><p>But attached is a composite double scan .</p><p>In both instances ..both H and V were scanned ..</p><p>The difference between the two images..</p><p>the SL3 was rotated through 90 degrees at the dish ..The top scan favours Horizontal in this position .</p><p>The bottom scan biased in favour of Vertical signals..</p><p>Proving that signals do indeed get to both probes including the offset funneled one...as well as the one in direct line of fire.</p><p>Hence the bias on rotation of the SL3.</p><p></p><p>Images of the scans are aligned such that the massive peak at roughly 18509 ...present in both images ..but only large enough to be locked and produce a 32psk constellation when the SL3 is rotated for vertical bias..</p><p>I think this proves conclusively that the modded SL3 is functioning -more or less- in Linear mode ..where once it was Circular..</p><p>I'd call the experiment a success ...</p><p>..but am frustrated that the SL3s pcb layout makes it impossible to bet 2 probes at 90 degrees to each other ..directly in the signal flow within the main waveguide.</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 856282, member: 325666"] Ok ..Ocko was a longshot ..with this modified setup ..and such a low signal .. But attached is a composite double scan . In both instances ..both H and V were scanned .. The difference between the two images.. the SL3 was rotated through 90 degrees at the dish ..The top scan favours Horizontal in this position . The bottom scan biased in favour of Vertical signals.. Proving that signals do indeed get to both probes including the offset funneled one...as well as the one in direct line of fire. Hence the bias on rotation of the SL3. Images of the scans are aligned such that the massive peak at roughly 18509 ...present in both images ..but only large enough to be locked and produce a 32psk constellation when the SL3 is rotated for vertical bias.. I think this proves conclusively that the modded SL3 is functioning -more or less- in Linear mode ..where once it was Circular.. I'd call the experiment a success ... ..but am frustrated that the SL3s pcb layout makes it impossible to bet 2 probes at 90 degrees to each other ..directly in the signal flow within the main waveguide. 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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