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<blockquote data-quote="deeptho" data-source="post: 1143476" data-attributes="member: 215446">I think the problem is somehow temperature related. This morning I got the following spectrum, which does not look too bad, except that it has a strange flat region it.I then left the LNB tuned for 10 minutes. After that, I took another spectrum scan and the flat area has gone. One or twovery high peaks are probably still not real, but the spectrum looks pretty OKThis evening I found a similar result: first a flat area in the spectrum. After warming up, a smooth spectrum.The 2nd spectrum is more as it should be, but note that in the formerly flat area, the spectrum still has a large peakthat does not look quite right. I think the flat area is what happens in the extreme case. After warming, it turns into a lessextreme case and after warming some more it gradually goes to normal.Either this is related to some electronic components (like electrolytic capacitors, but would there be any of that type inside)or perhaps it is some moisture problem, e.g., some condensation that evaporates after heating.[ATTACH=full]147883[/ATTACH][ATTACH=full]147884[/ATTACH]</blockquote>

[QUOTE="deeptho, post: 1143476, member: 215446"] I think the problem is somehow temperature related. This morning I got the following spectrum, which does not look too bad, except that it has a strange flat region it. I then left the LNB tuned for 10 minutes. After that, I took another spectrum scan and the flat area has gone. One or two very high peaks are probably still not real, but the spectrum looks pretty OK This evening I found a similar result: first a flat area in the spectrum. After warming up, a smooth spectrum. The 2nd spectrum is more as it should be, but note that in the formerly flat area, the spectrum still has a large peak that does not look quite right. I think the flat area is what happens in the extreme case. After warming, it turns into a less extreme case and after warming some more it gradually goes to normal. Either this is related to some electronic components (like electrolytic capacitors, but would there be any of that type inside) or perhaps it is some moisture problem, e.g., some condensation that evaporates after heating. [ATTACH type="full"]147883[/ATTACH] [ATTACH type="full"]147884[/ATTACH] [/QUOTE]

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