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Originally Posted by rainman
are you using the p mount or the u bolt mount.I think the difference in the angles may be in the mount as Bill stated.  |
I have the FC90 U-mount -- if you have the same, you can save a lot of time with this information. It should be 2-3 degrees lower than the scale reads (I would say the scale is about 2.5 Degrees too high).
If all other mount hardware is plumbed and aligned properly (as it should)you should be able to subtract 2.5 degrees from the prescribed elevation angle, and you should be receiving pretty good signal quality -- I couldn't repeatably resolve greater than 0.5 degrees with the alignment hardware. You think someone would think of putting a set screw (worm screw) to ease fine tuning a critical parameter such as the elevation. Anyway the whole assembly doesn't lend well to any precision alignment. I found the poorly supported LNB arm to vibrate and doesn't settle for 10 seconds. This vibration can be set of with motor start/stop operation or in moderate wind conditions. Wonder what this would do to the signal quality? Also, there are many other inaccuracies in the whole set-up and the elevation angle then becomes a fudge factor and not an exact science. Hence we have the frustration and forums such as this to vent it.
I hope the pole mount version is much more accurate than the U-bolt. Anyone want to divulge that information to save some other people some frustraion?