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Satellite Launches and Retirements
Eutelsat 13C now called (Eutelsat 12 West G @ 12.5° W)
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<blockquote data-quote="moonbase" data-source="post: 1149126" data-attributes="member: 178786"><p>There should only be marginal impact from a 0.15 degree inclination on a 1.5m dish for a decent strength signal</p><p>It depends on your link margin, if it is a borderline lock situation with perhaps a few tenths of a degree margin then you could see some impact.</p><p></p><p>When 30.9E was inclined a few years ago and in daily use by SIS I was tracking it with a 1.5m prime focus dish.</p><p>There was no "bite" from the incline until it started to creep up to perhaps 0.3 degrees inclined and even then I maintained a lock without the need to activate dual axis tracking.</p><p></p><p>Another way of thinking about it is to compare the 0.15 degree incline to Azimuth adjustment with a v-box.</p><p>A v-box generally gives 11 to 12 clicks to a degree on a 36V H-H motor such as a Jaeger 1224, approximately equivalent to 0.08 - 0.09 degree per click.</p><p>If you are dead centre peaked on the satellite and you marginally move off by 1 to 2 clicks on a v-box, the signal variation is in the area of magnitude of a 0.15 degree incline.</p></blockquote><p></p>
[QUOTE="moonbase, post: 1149126, member: 178786"] There should only be marginal impact from a 0.15 degree inclination on a 1.5m dish for a decent strength signal It depends on your link margin, if it is a borderline lock situation with perhaps a few tenths of a degree margin then you could see some impact. When 30.9E was inclined a few years ago and in daily use by SIS I was tracking it with a 1.5m prime focus dish. There was no "bite" from the incline until it started to creep up to perhaps 0.3 degrees inclined and even then I maintained a lock without the need to activate dual axis tracking. Another way of thinking about it is to compare the 0.15 degree incline to Azimuth adjustment with a v-box. A v-box generally gives 11 to 12 clicks to a degree on a 36V H-H motor such as a Jaeger 1224, approximately equivalent to 0.08 - 0.09 degree per click. If you are dead centre peaked on the satellite and you marginally move off by 1 to 2 clicks on a v-box, the signal variation is in the area of magnitude of a 0.15 degree incline. [/QUOTE]
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Satellite TV receivers & systems support forums
Satellite Launches and Retirements
Eutelsat 13C now called (Eutelsat 12 West G @ 12.5° W)
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