|
|
This page costs me money to provide and has a limited daily usage. Prior to its daily reset at 8am GMT this page may run out of its daily usage allowance and stop working. Sorry.
Satellite antenna dish aiming angle / pointing calculator : Southern Africa
You must select the satellite first and then click on the map. If you change satellite, click the map again nearby the original point till the satellite pointing angles calculate again.
Instructions for people in Congo, Angola, Zambia, Tanzania, Kenya, Namibia, Botswana, Zimbabwe, Mozambique, South Africa
First select the satellite you want using the pull down menu in the box at the lower left.
Put your mouse cursor near your location and then double click or simply drag the map. The map image will move so that the chosen point is in the centre. The latitude and longitude of the dot at the centre of the map is then displayed below the map, together with your satellite dish pointing angles: azimuth, elevation and polarisation.
To improve accuracy, click on the plus sign (+) in the navigation boxes at the top left side of the map. The scale changes so that you can home in accurately on your location. Repeat. Select "Satellite" or "Hybrid" version to see the satellite photo image of the ground or even a view of your own house as seen from space !
Dish pointing (Azimuth and elevation mount):
Set the dish elevation (up/down) angle first. There may be a scale on the back. An inclinometer may be of use if you know the dish
elevation offset angle. Set the feed rotation polarisation angle also. There may be polarisation rotation scale on the LNB feed
horn throat. Facing the satellite, clockwise polarisation is positive, negative is anticlockwise.
For the sideways azimuth 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 heavy rain.
Dish pointing (Polar mount):
Only your latitude matters. Set the main motor axis angle and the small downward tilt of the dish and with the motor central, align
the dish towards the notional due north satellite. Motor rotation angles to the east are positive, to the west negative.
If you are further north, off the upper edge of the map simply put your mouse cursor near the top, click and drag the map down will you see your country appear. Then press + to enlarge the scale.
More details of polar mount set up: https://www.satsig.net/polmount.htm
Safety Warning:
The results of this page may be in error. The latitude and longitude are not intended for the blind navigation of aircraft, ship or other vehicle purposes. Dish pointing angles may be wrong. Magnetic azimuth bearings are approximate. 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.
List of satellites
The list was last updated 17 Dec 2018
Maps not working ?
The map images on this page costs me money each time they are clicked so I have implemented a limited daily quota usage. Prior to the daily quota reset at 8am GMT this page may run out of its daily usage allowance and stop working. Sorry. The problem is believed to affect mainly people in the region 0 to 75 deg east longitude, which includes mid and east Africa waking hours prior to 8am GMT.
|
This page is on the satsig.net web site and is strictly Copyright Satellite Signals Limited (c) 2006 All rights reserved. Please report any copyright infringements to eric@satsig.net , also feedback on technical errors or problems with this page. Thanks Page started 9 March 2007. Amended 7 Jan 2019 HTML5 validated. 9 May 2919. 25 Jan 2020. Amended 28 July 2023. |