Quote:
Originally Posted by popper
but have you got a rule of thumb he can use for the vertical?
ohh another thing i just rememebered , and many people forget this.
when you point the dish you need to take into consideration that the actual point of reception is a mirror image of the LMB arm.
what i mean is imagine you take the dish and put it on the flat ground, then think of the letter V the left side of the V will have the LMB attached on it arm yes?, well the right hand side will be the direction the signal is coming in from if you see what i mean.
so you ned to keep that in mind for pointing the dish you need to visualise that right hand side of the angle as thats your line of sight line to point with not the LMB arm or dead center point of the dish.
does that make sense to you?.
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Theres no rule of thumb as such. On professional dishes (I'm talking 3metres) I've used an inclinometer, theres computer programs which if you know your position it can tell you the inclination (or call it elevation or vertical). You set the dish at the required elevation/incline and then simply pan the dish until you get your required signal.
You set one known quantity (elevation) then scan the other required quantity(direction).
But as I said, the Sky dishes have a spirit level so you can find the elevation, then you again pan until you have the direction. The spirit level has been set to find Skys sat position for the UK.