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26 posts

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Topic # 79883 23-Mar-2011 22:53
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I'm completely new to the idea of dish positioning but I've bought a used Digipower SG-2100 motor to use with my Digitilink 1000S STB which has DISEqC 1.2 & USALS in the Advanced Setup menu. Without mounting it onto my existing dish, I have connected the motor in the coax line to the LNB and when I select DISEqC 1.2 for the various satellites as listed in the Advanced Setup menu, the SG-2100 moves when I select each different sat. Now this sounds great but for the receiver to drive the motor to each specific sat, I would surely need to enter my latitude & longitude into the receiver so it knows where I am but I cannot find anywhere I can do this on the STB menus.

I guess that i must be missing something here and any help gratefully received please.

Steve 

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  Reply # 451587 24-Mar-2011 21:09
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Thanks for that Jaxson, it's most helpful and I think highlights my dilemma as there seems to be no way to add my latitude and longitude into my STB even though it supports positioning via DISEqC 1.2 & USALS. The distributor of the Digitlink 1000S STB is based in Auckland so I wonder if they have embedded their lat/long in the software. Now, I'm down in Christchurch at 43?33'S/172?47'E and Auckland is 36?52'S/174?46'E but, as my motor is single axis, I think the only thing I have to worry about is the difference in longitude. That makes a difference of -2?E and I'm now wondering if I can account for this by moving the whole motor & dish assembly 2?W to account for it as the STB does seem to be already programmed with the positions of each satellite.

I guess it's going to be down to biting the bullet to try out my thoughts but I was trying to fully understand the process before I started. I wish I could figure out a way to measure the exact directivity of my current dish as set to D1. I'll look at making a inclinometer to gauge the elevation of the dish and make some form of T Square to put across the dish and sight that with an accurate compass. I'll set the motor to the correct latitude, allow the STB to drive the motor to what it thinks is D1 and then set the elevation & direction to the figures I have taken as a starting point.

If anyone thinks my logic is wrong (or right) please let me know.

Cheers, Steve

 
 
 
 


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  Reply # 451670 25-Mar-2011 08:11
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sar10538: and make some form of T Square to put across the dish and sight that with an accurate compass.


I tried something similar... until I realised that putting a compass near a steel satellite dish causes the compass to deviate and it is therefore no longer that accurate.  I found it easier to just visually line up the satellite dish arm with an object in the distance - http://www.dishpointer.com/ can be quite useful.

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  Reply # 451694 25-Mar-2011 09:33
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catdog: putting a compass near a steel satellite dish causes the compass to deviate

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catdog: http://www.dishpointer.com/ can be quite useful.

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  Reply # 451703 25-Mar-2011 09:46
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I tried something similar... until I realised that putting a compass near a steel satellite dish causes the compass to deviate and it is therefore no longer that accurate.  I found it easier to just visually line up the satellite dish arm with an object in the distance - http://www.dishpointer.com/ can be quite useful.

Ah! Good point, bit of a logical flaw on my part :)

Cheers, Steve

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