Newb motorised setup woes!

hacksawbob

C.C...C...CC...CC.C..cold Frostbite stopped play, still no joy I'm affraid. had the dish off again. noticed the lnb was a smidge off centre on the bracket, reset and tried again I cant beleive I'm getting absolutely nothing not even a bad signal. I'd hate to admit defeat, and get someone in. try again tommorrow if weather allows.

rolfw

The voltage at the motor/lnb should be a maximum of 19 volts, if you are reading 80v, there is something seriously wrong.

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hacksawbob

Hi guys, I'm back I'm affraid. False alarm with the voltage my meter needed a battery change. Weather hasn't been up to much lately as I'm sure your aware, I have tried sweeping the dish back and forth around the due south mark at varying dish declinations looking for thor. Not a saussage. any ideas? I am at a loss where to go with this. I've remade all the fconnectors SURELY the only thing left is the lnb, dont these go wrong?

rolfw

Yes the LNB could be faulty, but the most common mistake I see is that members tend to point the dish too high.

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hacksawbob

Hi rolf, I take it form the earlier post that the dish needs to be at about 10 degs off perpendicular, I have measured this with a spirit level (with an angle finder) which equates to 27 degs on the dish bracket. Am I right in thinking that I will not get ANY signal unless I'm bang on the satellite? how much overspill do you get either way? would moving the lnb one cm be the difference between some signal and absolutely nothing? I'm just trying to guage how much I need to be mong the dish by.

rolfw

Yes, you certainly need to be pretty close, not really sure how the difference between hit and miss would equate to movement at the end of the boom arm though.

That 27 degrees sounds a bit high.

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hacksawbob

YEs it says 27 on the dish bracket but the 'real' measured tilt from vertical is 10 degs even though the scale on the bracket says 27!

Jeff_19341

Hi
You do have an offset dish hence difference in numbers.
Declination for your neck of the woods about 7 degrees set the dish angle scale to about 29 -7 = 22.

Jeff

hacksawbob

where do you get the 29 figure from?

rolfw

29 degrees (or thereabouts) is the elevation from your location for the top of your arc.

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Jeff_19341

Rolf is correct.
Use Calculator for azimuth and elevation angle
this calculator .
Jeff

longstockings

That calculator is absolutely brilliant
Thanks for posting such a great link

I'm of the opinion that the dish is set to high which is why nothing can be found

Jeff_19341

Usefull little tool Longstockings, glad to be of use. I also agree the dish is pointing too high. As they say "a miss is as good as a mile" , in trying to pick up a satellite located about 40000kms away out in space.

Jeff

bishbosh

i use a post level used for fencing this is simply a piece of plastic with 3 levels and two sides on only cost £3-4