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Message: <blockquote data-quote="Huevos" data-source="post: 741632" data-attributes="member: 301161"><p>VS, I didn't do a very good job of explaining what I was getting at. What you are doing is at 180º (due South) you are changing the dish elevation, but at the extremes of the arc (just below the horizon) you are changing the LNB skew only rather than the elevation. At all points in between you are changing a varying combination of the two. That might mean, for example, that at 58ºW when you move the mount 10º in elevation that the dish is really only changing elevation by about 3º, but changing skew by 8 or 9º. Being a comprimise you have to balance somewhere between the correct elevation and the skew error, whereas if the second ram was controlling declination only the skew would always be correct (for satellites with 0º skew in relation to the equator) and only the elevation would change.</p></blockquote><p></p>