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Topic: Setting up a satellite dish.
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19/6/2013 at 12:24pm
Location: Yorkshire Dales Outfit: Freedom Sunseeker & Mondeo 2.0 TDCi
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Joined: 02/8/2012 Standard Member
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I agree that the mechanical inclinometer is best avoided.
Tilting it backwards can stop the swinging but it is easy to restart the swing when reinstating it.
I couldn't come to terms with mine, but I gave it a go and remain grateful to Vin Blanc for introducing me to the idea of building upon a reference elevation via David Sullivan's website.
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It may be be that your loss of calibration, when using the "clinometer" app., is because you inadvertently touch the recalibrate button.
I have the paid version of Clinometer (currently .50p). This includes a calibration feature, which was obviously written for a purpose. In reality I find that my phone's calibration doesn't generally slip by more than half a degree, whereas my spirit level doesn't slip at all, which makes it my preferred option.
With my setup, I also know that the length of my spirit level's bubble equates to 2 degrees of elevation; hence I can accurately assess 20-24 degrees elevation simply by the bubble's position within its tube, without using any coins. That range covers the majority of my UK caravanning.
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If you cannot be bothered to make the gadgets that Vin & I use then use it on the LNB arm & make an arithmetic correction to the elevation angle.
Precisely! Most people seem to own a smartphone these days, so Clinometer offers a very simple and affordable solution to setting the correct elevation, either via a gadget or some very simple maths. Once the elevation is correctly set then hitting the bird becomes a piece of cake.
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20/6/2013 at 5:55am
Location: New Milton Hants Outfit: Compass Magnum Classic 540 (now sold)
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Quote: Originally posted by Swizz on 19/6/2013
Whilst criticising the mechanical inclinometer I had forgotten that Vin uses it ! Vin have I got a bad example or how do you cope the undamped swinging.?
David
It's probably because on both my off-set and cassegrain dishes the little steel "elevation" brackets are mounted at the back and more or less centre of the dish so "swing" is almost eliminated.
See Picts here - http://www.ukcampsite.co.uk/articles/view.asp?id=552
On my old 37cm Maxview dish (permanently embedded in bushes in the garden) the bracket slots into a small slot on top of the dish and yes, the inclinometer needle swings like a whip aerial on a ship in a gale!
Fortunately, that dish is a permanent fixture supplying a signal to the caravan when it's parked up in the garden.
Makes a nice TV equipped "Summerhouse"!
See my "gallery" pictures.
Vin Blanc
Post last edited on 20/06/2013 06:15:28
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