Tweaking my anglesInformation exchange on LNBs, Single satellite, motorised and multi-satellite systems. DiSEqC switches, positioners, motors, actuators, dish-alignment etc. | |
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Tweaking my anglesInformation exchange on LNBs, Single satellite, motorised and multi-satellite systems. DiSEqC switches, positioners, motors, actuators, dish-alignment etc. | |
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| | #1 | ||
| Regular Member Join Date: 10-07-2003
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I ahve jsut installed amotorised systen for a friend and we can get from 19.2E to 8W but nothing outside of these......... Should I drop my motor angle and raise my dish angle, or raise my motor angle and drop my dish angle,.......................... Thanks......... | ||
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| | #2 | ||
| Believe it when I see it Admin. Real name: Rolf Join Date: 01-05-1999 Location: Southern England
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Blog Entries: 5 My System: Pace Sky HD, DM7000s, CubeRevo 3000HDPVR, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Televes H45 Digital Spectrum analyser. | What type of motor is it and what reference did you use for your due south set up point? | ||
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| | #4 | ||
| Believe it when I see it Admin. Real name: Rolf Join Date: 01-05-1999 Location: Southern England
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Blog Entries: 5 My System: Pace Sky HD, DM7000s, CubeRevo 3000HDPVR, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Televes H45 Digital Spectrum analyser. | Providing that the pole is plumb and you have set the angle on the motor mounting bracket to exactly your lattitude, then you shouldn't be far off beam. What is your longitude there? | ||
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| | #5 | |||
| Regular Member Join Date: 10-07-2003
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| | #6 | ||
| Believe it when I see it Admin. Real name: Rolf Join Date: 01-05-1999 Location: Southern England
Posts: 29866
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Thanked 1098 Times in 691 Posts
Blog Entries: 5 My System: Pace Sky HD, DM7000s, CubeRevo 3000HDPVR, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Televes H45 Digital Spectrum analyser. | I would have thought that if you can get 8W and 19.2E and your motor scale is set at the correct lattitude, then you should at least be able to receive the satellites in between those. | ||
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| | #7 | ||
| Mod and septic resident Join Date: 01-01-2000 Location: London SW
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| It is going to be a tradeoff between all three ajustments Nothing further than 8W centrepoint suggests N/S post errors Once this is corrected then you can check if 19E has got stronger or weaker and then adjust elevation and declination in equal amounts to get the full arc | ||
| There is a very fine line between "hobby" and "mental illness" | |||
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| | #8 | ||
| Believe it when I see it Admin. Real name: Rolf Join Date: 01-05-1999 Location: Southern England
Posts: 29866
Thanks: 51
Thanked 1098 Times in 691 Posts
Blog Entries: 5 My System: Pace Sky HD, DM7000s, CubeRevo 3000HDPVR, Transparent 80cm Dish, Moteck SG2100 DiseqC motor, lots of legacy gear. Meters: Satlook Digital NIT, Televes H45 Digital Spectrum analyser. | The thing with these motors CH, is that normally, providing the pole is plumb, the correct lattitude setting on the motor body, will produce the required results and after finding the due south satellite, it will track the correct arc. | ||
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| | #9 | ||
| Mod and septic resident Join Date: 01-01-2000 Location: London SW
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| It depends on the size of dish. With the average 70 / 80cm there is a good chance the tiny errors you get from setting up true south (is there such a thing ?) on a particular satellite may lead to the full arc. Once you go up a size, or have a very good dish in the first place, any error of latitude setting, even a hairs breadth on the post, will cause loss of part of the range. The 'nothing' to the west of the location still smells of misalignment on the post. | ||
| There is a very fine line between "hobby" and "mental illness" | |||
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| | #11 | ||
| Member Join Date: 03-01-2004
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| I have devised an ingenious blend of hypermodern and prehistoric procedures to determine true south: (1) Launch the SS2DISEQC12 software http://dvbsoft.rvsnet.cz/files/SS2DiSEqC16.zip, feed it with your exact lattitude and longitude, among other things it gives you the time of the day when the Sun is in true south. In my geographical position, it is at 12.00 these days. (2) The prehistoric part: take a huge flat square plank or cardboard, lean it horizontally against the face of the dish creating a right angle between the face of the dish and your viewing trajectory to the Sun. Simply look alongside the plank right into the Sun (sunglasses highly reccommended:-) and slowly move the dish into the positon of true south, much like aiming a gun at a target. Of course, the h-h motor should be in its default zero position. Adjust the elevation angle depending on your lattitude and you've got a perfect arc both ways. Done it myself, works perfectly. | ||
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| | #12 | ||
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| Because the whole of the UK is in one time zone, for every degree longitude east or west of the zero meridian one must subtract or add 4minutes (time), to obtain the time that the sun is due south at that location. For my longitude, 1*east, the sun is due south at 4 minutes to midday (GMT) or 11.56am (GMT) For someone in Poole, 2*west, the sun is due south at 12.08pm (GMT) For someone in Galway, 9*west, the sun would be due south at 12.36pm (GMT) gmbp | ||
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