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VSAT installer in Ethiopia

NetVSAT: VSAT installer in Sudan and Ethiopia

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Satellite TV antenna dish aiming angle pointing calculator for Sudan and Ethiopia.

Choose your desired orbit longitude and satellite in the box below

First select the satellite, then click on the map. If you change satellite, double click the map again nearby the original point till the satellite pointing angles re-calculate.

Instructions for people in Sudan and Ethiopia.

Choose the geostationary satellite you want to see using the pull down menus at box at the lower left.  Select by satellite name or orbit position.

Put your mouse near your location and then drag the map to the middle.  The map will move so that the selected point is in the centre. The latitude and longitude of the dot at the middle of the map is then displayed below the map, together with your satellite dish pointing angles: azimuth, elevation and polarisation.

You may try the geocoder box below and input the town or city name, for example, Al Khurtum, Al Fashir, Al Ubayyid, Kusti, Damazin, Wad Madani, Gedaref, Kassala, Atbara, Bur Sudan. Adis Abeba, Gonder, Dire Dawa.

To get really accurate results, click on the plus sign in the array of navigation boxes at the top left side of the map.  The scale changes so that you can home in accurately on your location.  Repeat several times.  Select Satellite or Hybrid version and see the satellite photo image of the ground or even a view of your own house as seen from space !

Feed polarisation (linear polarised systems):  Set the feed rotation polarisation angle. It is a two step process: Step 1: Start by setting your feed rotation so that you are set to the nominal downlink polarisation.  It may help to do this while the feed arm is sticking out horizontally, before the dish is raised to its operational elevation angle.  If you are trying to receive "Horizontal" then adjust so that the LNB waveguide has its two broad faces on either side.  If "Vertical" then the LNB waveguide needs its two broad faces on top and underneath.  Step 2: Now rotate the feed by the required polarisation adjustment angle.  Facing the satellite, clockwise polarisation adjustment is positive, negative is anticlockwise.  There may be a polarisation rotation scale on the LNB feed horn throat.  Use the scale marks for the amount of angle degrees only.  The scale my have wrong signs (+/-) and the scale numbering may go the wrong way etc.  Since you are near the equator the polarisation adjustment required by be large, approaching 90 deg is some cases. Don't worry, just follow the instructions above.

VSAT or TV dish pointing (Azimuth and elevation mount):
To find the satellite set the dish elevation (up/down) angle accurately before swinging the dish around sideways in azimuth.   There may be an elevation scale on the back.    An inclinometer may be of use if you know the dish elevation offset angle.

Please write down all the satellite dish pointing angles for future reference. If you are setting up a two-way VSAT terminal record your latitude and longitude also as this will be needed for input to the modem, so that the modem can work out the distance to the satellite to get the TDMA burst timing correct.  

For setting up the azimuth (sideways) angle use a magnetic compass and swing the dish boldly sideways to find the satellite on the first swing.  Then spend half an hour peaking up.  Peaking up is really important for long term service quality and minimum outage time during rain fades.

Warning: Lat, long and dish pointing results of this page may be in error. The latitude and longitude are not intended for navigational purposes of aircraft, ship, vehicle or other purposes.  Magnetic azimuth bearings are approximate and vary slightly from year to year. Use is entirely at your own risk. Apply common sense and don't believe every number that comes out of a computer system.  Take care with satellite dish pointing to not injure others by dropping tools or hurting yourself by falling down.  Lines delineating the West Africa countries and territories are approximate.


This page is on the satsig.net web site and is Copyright Satellite Signals Limited (c) 2007 All rights reserved.
Please report any copyright infringements to eric@satsig.net , also any feedback on technical errors or problems with this page.  Many thanks.

Page started 10 March 2009, amended 30 Jan 2013 V3+key. Amended for mobile responsive 20 July 2015