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Old 10-06-2007, 03:16 AM
crapsRfun crapsRfun is offline
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Unhappy dish alignment?

I am installing a new system and am not sure I have the dish alignment correct.

system consist of:
Fortec Lifetime Ultra
Invacom QPH-031
Sadoun PowerTech DG240
Fortec Star 31" (80 cm) Offset Satellite Dish

my longitude is 84.1 w
and latitude is 39.9 n

I am seeing most everything from Hispasat 1C (30*) to Echo 8/10 (110*).
I am able to use USALS for most of the birds but cannot get a good signal for anything W of 110* even though I have nothing in the way except clear skies.

What could be wrong?

Thanks
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Old 10-06-2007, 06:54 AM
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sounds like you are still off a little on alignment try tweaking the western sats some till you get the whole arc.
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Old 10-06-2007, 10:49 AM
crapsRfun crapsRfun is offline
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OK - how do I tweak the western sats without messing up the eastern ones?
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Old 10-06-2007, 11:48 AM
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Quote:
Originally Posted by crapsRfun View Post
OK - how do I tweak the western sats without messing up the eastern ones?
You tweak the western sats (or eastern if you live in the west) by making very slight adjustments by loosening the bolts holding the motor to the pole, and moving the whole assembly. I usually draw a pencil line on the pole, and the mount, and move it barely more than the thickness of a pencil line. Then I use the buttons on the motor to bump the motor back and forth to find the best quality. If it is better than before the adjustment, then you're going the right direction, if worse, then go back on the other side of the pencil line. Note though, that the quality doesn't always get better immediately when you make the adjustment. Sometimes it gets worse, and only gets better when you do the bumping via the buttons on the motor. Generally you should do this on the the last sat to the west that you can see at all, and it should improve things so that you can then see the further west sats. You should NOT touch dish or motor elevation while trying to tweak your western sats.
In theory, moving the whole assembly on a western sat won't affect the tracking for sats to your south, and adjusting the elevations don't have much affect on the tracking of the western sats, which is why you adjust elevations on a southern sat and rotate on the pole while on a western sat.
Moving the whole assembly on the pole WILL affect the sync though, which may affect how well USALS works (if your motor is properly calibrated re it's zero, it should improve, if the motor isn't calibrated, USALS performance may get worse), but this shouldn't affect the tracking.
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Old 10-06-2007, 03:10 PM
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and if necessary, USALS can be "faked out" if adjustment is required by changing your LONG and LAT in the USALS settings.
This will in effect - change ALL the sat positions.
So it's possible to move your dish on the pole, then make a tenth or so change on your LAT and see how things line up for you across the arc.
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Old 10-08-2007, 07:59 AM
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Sounds like your true south is off a bit or your mast is not plumb and tilted to the east or west.
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