Satellite TV Setup

Setting up your Satellite system is easy if you follow these guidelines:

Note: This guide is intended for setting up the Optus Aurora C1 satellite.

If you require another service on another Satellite, first go to: http://www.lyngsat.com/asia to find the satellite and the service required.

Some info also applies to SelecTV.

The Optus C1 satellite orbits the earth at the equator (latitude 0 degrees) and longitude 156 degrees East.

The Optus B1 is at 164 E, B3 at 152 E and D1 at 160 E.

If you want SelecTV, you need the Intelsat8 (formerly PAS8) at 166 degrees East.

Eg:If you are installing at or near ‘Blanchetown’, South Australia, you can use the following information:

  • Latitude: -34 degrees 21 minutes
  • Longitude: 139 degrees 36 minutes

However if you are at another location, you must first find your GPS coordinates. Go to www.ga.gov.au/map/names to find the GPS coordinates of your town. If your town is not listed, or you are not in a town, find the nearest town or towns listed, and you can work out what your coordinates should be.

So to enter our ‘Blanchetown’ latitude of -34 degrees 21 minutes (see below) you would enter -34.35 degrees as a decimal number (21/60 = 0.35)

Which gives us:

  • Elevation: 46 degrees 39 minutes
  • Azimuth: 27 degrees 58 minutes (Geographic) 21 degrees 17 minutes (Magnetic)
  • LNB tilt: 22 degrees 43 minutes (clockwise looking at dish from the satellite)

If you are at another location, once you have your latitude and longitude, go to ssazelm.htm and enter your location numbers, and you will then get the required ELEVATION, AZIMUTH, and LNB TILT.

You will also get interesting but useless information such as “distance to satellite 37,312.870 kilometres”

ELEVATION is the angle between the horizon and the satellite. DO NOT set the dish itself to this angle.

The dish has a “throat angle” or “offset angle” which means that because of the parabolic curve of the dish and the location of the LNB, the main body of the dish is angled lower than the satellite angle.

If your dish has a graduated scale, simply set it to the required satellite angle.

If your dish has no scale and you can’t get the throat angle from your supplier, you’ll have to guess, and it will be much harder to find your satellite. Some dishes we have used have offset angles of 20, 21, 22 and 30 degrees.

Always set up the mount truly vertical so that once your elevation is correct, all you have to do then is rotate the dish for the best signal. You will have to fine-tine your elevation once the signal is found.

AZIMUTH is the direction on the compass where your dish needs to point. AZIMUTH has 2 values, geographic and magnetic. Use the geographic value if say you know that your roof line runs exactly east-west, etc and you can use a large protractor to set the direction correctly.

Normally you would use a compass to set the dish to the magnetic direction, which is the geographic direction plus (or minus) the magnetic deviation, which varies from one location to another, but is approx 7 degrees around Blanchetown example.

It’s hard to get really accurate, especially with a mobile phone in your pocket! Remove anything magnetic, and remember the dish itself will alter the compass reading.

LNB TILT is the POLARIZATION angle at which the LNB needs to be rotated to get the best quality signal. Generally the further you have to point away from geographic North, the greater this tilt angle will be. If the satellite is East of North, the tilt will be clockwise looking into the dish. If the satellite is West of North, the tilt will be anti-clockwise looking into the dish.

Note: These instructions are for the Southern Hemisphere. In the Northern Hemisphere these instructions are reversed.

To start with, set the LNB to approx 20 degrees (Optus Aurora) or 30 degrees (SelecTV)

Setting Up

Once you have your elevation, azimuth and LNB tilt set up as accurately as you can, connect your short patch cable from the LNB to the Satellite Finder, and the main cable from the Satellite Finder to the “LNB” or “Input” on the receiver.

Switch on the receiver and go to the install menu.

Select the correct satellite “Optus C1”.

First you must check that the LNB type and frequency is OK otherwise nothing will work. You will usally find this under “Antenna Configuration” or Dish Setup” or similar.

You beed to have a 10.7 or 11.3 GHz LNB.

Select the correct transponder, 12407 V for Optus Aurora

Note: Setting V or H correctly is important: the decoder will power the LNB at 12 Volts or 18 Volts respectively

There will be a list of transponders in the Strong receivers. If you have a receiver without the transponder list, or if the list is wrong, check and/or enter the following data:

Transponder Setup

If there is no transponder TP 12407 then you can add a new transponder. Set the polarity to V for Vertical, Set the Symbol Rate to 30000. In some decoders you need to set the FEC to 3/4, others will detect this automatically.

Optus C1

You will also need 12527, V, 30000, 3/4 and 12728, V, 24450, 1/2.

SelectTV

For SelecTV on Intelsat 8, you will need 12286, H, 28800, 3/4 and 12326, H, 28800, 3/4 and 12526, H, 28800, 3/4 and 12526, H, 28800, 3/4.

Signal Strength and Quality

Look at the signal strength bar and the quality bar. The bars will normally change colour once the signal is good quality (quality is more important than strength).

You will normally have to go to the dish and make minor adjustments to the elevation, azimuth and LNB tilt (in that order) until you get the best signal from the Satellite Finder.

You will need someone looking at the TV to let you know if you are getting close. If the satellite finder gives you a good signal, but the signal quality on the decoder is poor, you are probably on the wrong satellite.

Once you get a good quality signal, lock up the azimuth and elevation on the dish. If you flex the dish up, down, left and right and the signal drops off in each case, your adjustment is nearly complete. Final adjustment is polarisation. Rotate the LNB in it’s holder until you maximise the signal, then lock it.

Seal the Connection

After completing the dish alignment, remove the satellite finder and replace the RG6 cable. Tighten the connection with a spanner (one flat past finger-tight) and seal the joint with self-amalgamating tape.

If no amalgamating tape is available, use nuetral cure silicone, e.g. roof and gutter. Because water entry at this point will cause problems.

Find the Channels

When you have good quality and strength, let the system search for available channels (usually by pressing OK”).

Once you have your channels, review them and delete the ones you don’t have access to (“scrambled” warning).

If the decoder won’t find any channels, you haven’t got a good signal or you’ve set up the LNB or the transponder incorrectly. Go back and review each step.














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