Installing a satellite system is not complicated and can be ... - Labgear
Installing a satellite system is not complicated and can be ... - Labgear
Installing a satellite system is not complicated and can be ... - Labgear
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<strong>Installing</strong> a <strong>satellite</strong> <strong>system</strong> <strong>is</strong> <strong>not</strong> <strong>complicated</strong> <strong>and</strong> <strong>can</strong> <strong>be</strong> achieved by anyone with<br />
basic DIY skills, a bit of patience <strong>and</strong> a small amount of trial <strong>and</strong> error.<br />
Fitting <strong>and</strong> aligning the d<strong>is</strong>h assembly <strong>is</strong> like trying to hit a car the size of a Mini one<br />
thous<strong>and</strong> miles away, but with a good secure fixing <strong>and</strong> good alignment it will give<br />
many years of low maintenance service. If th<strong>is</strong> <strong>is</strong> <strong>not</strong> for you, it will <strong>be</strong> far easier for<br />
you to contact a local <strong>satellite</strong> installer in your area to ass<strong>is</strong>t you (See the CAI<br />
Confederation of Aerial Installers http://www.cai.org.uk/asp/installer.asp for reputable<br />
companies in your area).<br />
You are going to need at least a couple of hours to fit <strong>and</strong> align the d<strong>is</strong>h, set the<br />
receiver <strong>and</strong> run the cabling, do <strong>not</strong> install a d<strong>is</strong>h in windy conditions, always have a<br />
second person to help with fitting, also the wind loading even on a small d<strong>is</strong>h <strong>can</strong> get<br />
very high so always make sure that the installation <strong>is</strong> stable <strong>and</strong> secure, always use a<br />
Residual Current Breaker on any power tools <strong>and</strong> if you are working at height on a<br />
ladder then have it secured or someone to steady the ladder also check <strong>and</strong> prepare<br />
any tools that may <strong>be</strong> needed <strong>be</strong>fore commencing installation.<br />
Fitting d<strong>is</strong>hes with a diameter of greater than 90 cm <strong>and</strong> in conservation areas could<br />
need planning perm<strong>is</strong>sion, consult your local planning authority or refer to the<br />
following web link<br />
http://www.communities.gov.uk/documents/planning<strong>and</strong>building/pdf/householdersgui<br />
deantennas.pdf<br />
Parts of the <strong>system</strong><br />
The D<strong>is</strong>h <strong>is</strong> used to collect the signals from a <strong>satellite</strong> situated in orbit above the<br />
equator <strong>and</strong> concentrate the signal to a focused point; the main types of d<strong>is</strong>h are<br />
Offset where the LNB arm <strong>is</strong> fitted near the bottom of the d<strong>is</strong>h <strong>and</strong> <strong>is</strong> the most<br />
popular, Prime focus where the LNB <strong>is</strong> fitted directly in front of the d<strong>is</strong>h.<br />
The size of the d<strong>is</strong>h <strong>is</strong> important as it determines the amount of signal that <strong>can</strong> <strong>be</strong><br />
received, for instance to view UK channels from Astra 2 in most of the UK mainl<strong>and</strong><br />
then a 45cm d<strong>is</strong>h will <strong>be</strong> sufficient, to receive the same channels in France <strong>and</strong><br />
Germany 60 to 100cm D<strong>is</strong>hes will <strong>be</strong> needed<br />
The LNB (Low No<strong>is</strong>e Block) <strong>is</strong> fitted on the front of the d<strong>is</strong>h by an arm, it receives<br />
the concentrated signal from the d<strong>is</strong>h <strong>and</strong> then reduces the frequency of the incoming<br />
signal <strong>and</strong> then amplifies the low power signal so it <strong>can</strong> <strong>be</strong> sent to the receiver.<br />
Co-axial (Co-ax) Cable th<strong>is</strong> high quality cable <strong>is</strong> needed to transfer the signal from<br />
the LNB to the Satellite receiver, Use RG6, CT100 or even <strong>be</strong>tter PF100 cable for the<br />
<strong>be</strong>st signal transfer.<br />
F-Connectors are fitted at either end of the Co-axial cable to allow fitting to the LNB<br />
<strong>and</strong> Receiver<br />
Satellite Receiver th<strong>is</strong> device acquires the signal transferred by the Co-axial cable<br />
<strong>and</strong> converts them so they <strong>can</strong> <strong>be</strong> viewed on a Telev<strong>is</strong>ion or recorded on a suitable<br />
Video or DVD recorder<br />
Satellites<br />
The <strong>satellite</strong> signals (Beam) which provide Satellite TV <strong>and</strong> Satellite Radio programs<br />
are very high frequency <strong>and</strong> low power, the <strong>satellite</strong>s are positioned in a<br />
Geostationary orbit 22,200 miles (35,800 kilometres) above the earth at the equator<br />
called the Clarke Belt, <strong>be</strong>cause they are stationary above the earth different <strong>satellite</strong>s
are able to service different points on the earths surface known as the <strong>satellite</strong>s<br />
footprint, these <strong>can</strong> <strong>be</strong> found at the following web addresses:<br />
http://www.lyngsat.com<br />
http://www.satcodx.com<br />
http://www.ses-astra.com/consumer/azimuth/index.php?locale=en_GB<br />
http://www.d<strong>is</strong>hpointer.com<br />
http://www.directv.com/learn/pdf/SelfInstallGuide.pdf (Good fitting <strong>and</strong> alignment<br />
instructions, however all the d<strong>is</strong>h parameters are <strong>not</strong> applicable to the UK, so ignore<br />
them)<br />
You <strong>can</strong> also use the some of above websites to find out which Satellite TV/Radio<br />
channels will <strong>be</strong> available at each of the <strong>satellite</strong> locations; these are sometimes l<strong>is</strong>ted<br />
in transponder order <strong>and</strong> <strong>not</strong> in TV/Radio channel order, so you may have to look<br />
down the entire l<strong>is</strong>ting to find the channel you want.<br />
Each <strong>satellite</strong> has 80 or more transponders these are TV/Radio transmitters fitted to<br />
the <strong>satellite</strong> <strong>and</strong> each transponder has around 10 or more TV or Radio channels which<br />
it transmits, each transponder <strong>is</strong> horizontally or vertically polarized th<strong>is</strong> <strong>is</strong> why prec<strong>is</strong>e<br />
alignment <strong>is</strong> necessary for a good signal, once installed the <strong>satellite</strong> receiver box<br />
automatically does all the relevant switching.<br />
The footprint maps will <strong>be</strong> marked in EIRP Power in dB’s th<strong>is</strong> <strong>can</strong> roughly equate to a<br />
<strong>satellite</strong> d<strong>is</strong>h size required for receiving a cons<strong>is</strong>tent signal, th<strong>is</strong> assumes an LNB<br />
(Low No<strong>is</strong>e Block) of 0.6dB or <strong>be</strong>tter (lower) which most modern LNB’s will easily<br />
exceed.
Most of the UK <strong>and</strong> Eire will <strong>be</strong> able to receive Astra 2 (28.2E)/Eurobird (28.5E)<br />
showing mainly Engl<strong>is</strong>h language channels of Free to Air content from Sky, BBC <strong>and</strong><br />
ITV, smaller d<strong>is</strong>hes will <strong>be</strong> able to receive these two <strong>satellite</strong>s without the need for<br />
repositioning, Astra 1 (19.2E) shows mostly Germanic <strong>and</strong> H<strong>is</strong>panic content <strong>and</strong><br />
Hotbird (13E) has Multi European, Middle Eastern <strong>and</strong> some Asian Channels.<br />
Other Satellites available in different parts of the UK <strong>and</strong> Europe are Hellas Sat<br />
(39E) Greek <strong>and</strong> Southern Eastern European channels, Turksat/Eurasiasat (42E)<br />
Turk<strong>is</strong>h <strong>and</strong> Eurasian channels some of these are <strong>not</strong> available over the complete UK<br />
<strong>and</strong> Eire, Some of the above mentioned <strong>satellite</strong> are in fact a cluster of separate<br />
<strong>satellite</strong>s which from the earth appear as one single <strong>satellite</strong>.<br />
Satellite channels cater for a wide variety of interests like sport, news, entertainment,<br />
music, cartoons these <strong>can</strong> <strong>be</strong> saved as favourites on your <strong>satellite</strong> receiver, however<br />
some channels are <strong>not</strong> ideally suited to family viewing these <strong>can</strong> easily <strong>be</strong> removed or<br />
password protected.<br />
Power dB D<strong>is</strong>h Size Power dB D<strong>is</strong>h Size Power dB D<strong>is</strong>h Size<br />
64 22 55 40 43 110<br />
63 24 54 45 42 120<br />
62 26 52 & 53 50 40 & 41 135<br />
61 28 51 55 39 150<br />
60 30 49 & 50 60 38 180<br />
59 32 48 70 37 215<br />
58 34 47 80 36 240<br />
57 36 46 90 35 300<br />
56 38 44 & 45 100 34 360<br />
D<strong>is</strong>h positioning <strong>and</strong> fitting<br />
The first step in a <strong>satellite</strong> d<strong>is</strong>h installation <strong>is</strong> critical, as it will determine your<br />
eligibility to receive <strong>satellite</strong> signals, <strong>not</strong> all locations are capable of receiving signals<br />
<strong>be</strong>cause natural barriers such as trees, hills, mountains <strong>and</strong> also man-made barriers<br />
like buildings <strong>and</strong> other structures <strong>can</strong> easily block the signals, the d<strong>is</strong>h must have an<br />
un-obstructed view of the <strong>satellite</strong> in order to receive a sat<strong>is</strong>factory signal.<br />
Install the d<strong>is</strong>h assembly on a pole as vertically upright as possible so when adjusting<br />
the rotation of the d<strong>is</strong>h on the pole the d<strong>is</strong>h does <strong>not</strong> move up or down, also try to<br />
choose a location where the d<strong>is</strong>h <strong>is</strong> <strong>not</strong> going to <strong>be</strong> knocked out of position <strong>and</strong><br />
adjustment <strong>and</strong> maintenance <strong>is</strong> <strong>not</strong> going to <strong>be</strong> dangerous, strenuous or impractical.<br />
If the installation <strong>is</strong> going to <strong>be</strong> permanent then also <strong>be</strong>ar in mind, seasonal changes,<br />
in particular to locations with seasonal vegetation or shrubs, so you do <strong>not</strong> install your<br />
<strong>satellite</strong> d<strong>is</strong>h in a location that will <strong>be</strong> blocked when spring comes <strong>and</strong> leaves on trees<br />
obstruct your signal, generally in an open environment th<strong>is</strong> <strong>is</strong> easily remedied, but in a<br />
built up area the d<strong>is</strong>h should <strong>be</strong> located high enough to avoid the obstructions, a small<br />
change in location <strong>can</strong> provide a signifi<strong>can</strong>t effect on the signals received.<br />
All the <strong>satellite</strong>s will <strong>be</strong> in a southerly direction as indicated by the White Arrow on<br />
the Compass, position the 180 degree (S) mark <strong>be</strong>low the white compass arrow <strong>and</strong><br />
survey the surrounding area from 120 degrees to 240 degrees.
In the UK <strong>satellite</strong>s outside of 105 degrees to 255 degrees will <strong>be</strong> blocked by the<br />
curvature of the earth’s surface.<br />
Most d<strong>is</strong>h installations in the UK will <strong>be</strong> facing Astra 2 <strong>and</strong> will <strong>be</strong> pointing <strong>be</strong>tween<br />
140 <strong>and</strong> 150 degrees (SE-SSE South, East - South, South, East) so although you are<br />
unable to see an uninterrupted view of the southern sky, if you <strong>can</strong> see in an<br />
uninterrupted view in a SE-SSE direction then you will at least <strong>be</strong> able to receive<br />
Astra 2.<br />
H = Hotbird (13E), A1 = Astra 1 (19.2E), A2 = Astra 2 (28.2E)<br />
If you are using a compass to align the d<strong>is</strong>h, keep the compass away from the d<strong>is</strong>h<br />
assembly <strong>and</strong> any other electromagnetic sources, compasses do have a slight<br />
difference <strong>be</strong>tween the magnetic south as indicated by the compass needle <strong>and</strong> true<br />
south th<strong>is</strong> <strong>is</strong> called magnetic declination (but <strong>can</strong> <strong>be</strong> largely ignored with th<strong>is</strong> trial <strong>and</strong><br />
error method of alignment, find a v<strong>is</strong>ual marker on the horizon in the direction of the<br />
required <strong>satellite</strong> then face the d<strong>is</strong>h in th<strong>is</strong> direction.<br />
Generally in the northern hem<strong>is</strong>phere (North of the equator) the sun will <strong>be</strong> roughly<br />
south at around noon or 1pm (Summertime), r<strong>is</strong>ing in the east <strong>and</strong> setting in the west,<br />
Sky d<strong>is</strong>hes in the UK are pointing at Astra 2 (28.2E)/Eurobird (28.5E) so if you <strong>can</strong><br />
see a sky d<strong>is</strong>h in your vicinity th<strong>is</strong> will <strong>be</strong> a good starting point, however in Italy<br />
d<strong>is</strong>hes are pointed at Hotbird (13E) where most of the Italian channels are situated.
Angle B (cm) Angle B (cm) Angle B (cm) Angle B (cm)<br />
10 17.63 20 36.40 30 57.74 40 83.91<br />
11 19.44 21 38.39 31 60.09 41 86.93<br />
12 21.26 22 40.40 32 62.49 42 90.04<br />
13 23.09 23 42.45 33 64.94 43 93.25<br />
14 24.93 24 44.52 34 67.45 44 96.57<br />
15 26.79 25 46.63 35 70.02 45 100.00<br />
16 28.67 26 48.77 36 72.65 46 103.55<br />
17 30.57 27 50.95 37 75.36 47 107.24<br />
18 32.49 28 53.17 38 78.13 48 111.06<br />
19 34.43 29 55.43 39 80.98 49 115.04<br />
Select the <strong>be</strong>st fixing method for your location <strong>and</strong> follow the corresponding<br />
instructions for Wall Mount, Vertical Pole, Balcony Rail, Table Top or Suction St<strong>and</strong>,<br />
these are either supplied with the d<strong>is</strong>h assembly or available from any good <strong>satellite</strong><br />
dealer.
Three pieces of information will <strong>be</strong> needed: (these are all expressed in degrees) these<br />
<strong>can</strong> <strong>be</strong> found for most major towns or geographical locations on the following pages<br />
Azimuth (Side to Side D<strong>is</strong>h Movement) <strong>is</strong> the angle relating to the horizontal<br />
positioning of the d<strong>is</strong>h, North <strong>is</strong> 0 Degrees, East <strong>is</strong> 90 Degrees, South <strong>is</strong> 180 Degrees<br />
<strong>and</strong> West <strong>is</strong> 270 Degrees.<br />
Elevation (Up <strong>and</strong> Down D<strong>is</strong>h Movement) <strong>is</strong> the angle above the horizon; the angle<br />
the d<strong>is</strong>h must <strong>be</strong> tilted in relation to the horizon for a prec<strong>is</strong>e location of the <strong>satellite</strong> in<br />
the sky.<br />
Polar<strong>is</strong>ation <strong>is</strong> the angle that the LNB (Low No<strong>is</strong>e Block) must <strong>be</strong> rotated so that the<br />
horizontal <strong>and</strong> vertical fields from the <strong>satellite</strong> are aligned with the LNB pick up on<br />
the d<strong>is</strong>h, for Astra 2 (28.2E) start with the LNB at around the 8 o’clock position, th<strong>is</strong><br />
<strong>is</strong> also known as Skew <strong>and</strong> <strong>is</strong> to compensate for the curvature of the earth.
Astra 2 (28.2E)/Eurobird (28.5E) Satellite Elevation, Azimuth <strong>and</strong> Polarization<br />
for key towns <strong>and</strong> geographical points in Great Britain <strong>and</strong> Irel<strong>and</strong><br />
Location County Elevation Azimuth Polarization<br />
A<strong>be</strong>rdeen A<strong>be</strong>rdeenshire 19.76 145.17 -10.55<br />
A<strong>be</strong>rgavenny Gwent 23.96 142.37 -14.66<br />
A<strong>be</strong>rystwyth Dyfed 23.05 141.46 -14.84<br />
Alnwick Northum<strong>be</strong>rl<strong>and</strong> 21.39 145.06 -11.48<br />
Ampthill Bedfordshire 24.77 145.24 -13.03<br />
Athlone West Meath 20.62 137.71 -16.14<br />
Aviemore Highl<strong>and</strong> 19.12 143.34 -11.37<br />
Ayr Ayrshire 20.32 141.85 -13.04<br />
Banff A<strong>be</strong>rdeenshire 19.16 144.87 -10.43<br />
Barnstaple Devon 24.16 140.96 -15.81<br />
Basingstoke Hampshire 25.22 144.29 -13.92<br />
Bath Avon 24.61 142.91 -14.61<br />
Belfast Antrim 20.53 140.27 -14.24<br />
Berwick-Upon-Tweed Northum<strong>be</strong>rl<strong>and</strong> 20.96 144.86 -11.38<br />
Birmingham West Midl<strong>and</strong>s 23.84 143.83 -13.57<br />
Blackpool Lancashire 22.27 143.06 -13.28<br />
Bodmin Cornwall 24.38 139.98 -16.66<br />
Boston Lincolnshire 24.10 146.10 -12.12<br />
Bournemouth Dorset 25.37 143.19 -14.80<br />
Brecon Powys 23.71 142.02 -14.79<br />
Brighton & Hove East Sussex 25.95 145.16 -13.65<br />
Br<strong>is</strong>tol Avon 24.44 142.68 -14.70<br />
Bude Cornwall 24.17 140.33 -16.29<br />
Burnley Lancashire 22.59 143.95 -12.84<br />
Bury Saint Edmunds Suffolk 25.02 146.66 -12.16<br />
Caernarfon Gwynedd 22.36 141.52 -14.41<br />
Cambridge Cambridgeshire 24.85 145.97 -12.56<br />
Camp<strong>be</strong>ltown Argyll & Bute 19.96 140.89 -13.47<br />
Cardiff Mid Glamorgan 24.19 142.06 -15.01<br />
Cardigan Ceredigion 23.08 140.69 -15.41<br />
Carl<strong>is</strong>le Cumbria 21.40 143.56 -12.48<br />
Carmarthen Carmarthenshire 23.42 140.98 -15.39<br />
Cavan Cavan 20.41 138.52 -15.41<br />
Chelmsford Essex 25.37 146.21 -12.64<br />
Chester Cheshire 22.86 143.01 -13.63<br />
Colwyn Clwyd 22.43 142.12 -14.03<br />
Cork Cork 21.57 136.57 -17.60<br />
Coventry West Midl<strong>and</strong>s 24.05 144.26 -13.37<br />
Crainlarich Stirlingshire 19.53 142.26 -12.31<br />
Dingwall Highl<strong>and</strong> 18.58 142.81 -11.40<br />
Dolgellau Gwynedd 22.84 141.78 -14.49<br />
Douglas Isle of Man 21.44 141.64 -13.81<br />
Dover Kent 26.23 146.91 -12.53<br />
Dublin(Baile Atha Cliath) Dublin 21.36 139.47 -15.30<br />
Dundee Angus 20.02 144.02 -11.43<br />
Edinburgh Midlothian 20.39 143.60 -11.91<br />
Elgin Grampian 18.91 144.01 -10.83<br />
Exeter Devon 24.69 141.40 -15.76<br />
Felixstowe Suffolk 25.51 147.27 -11.96<br />
F<strong>is</strong>hguard Dyfed 23.02 140.32 -15.65<br />
Folkestone Kent 26.24 146.76 -12.64<br />
Fort William Highl<strong>and</strong> 19.00 141.86 -12.26<br />
Gairloch Highl<strong>and</strong> 18.08 141.56 -11.90<br />
Galway/Gaillimh Galway 20.28 136.52 -16.80<br />
Glasgow Lanarkshire 20.09 142.45 -12.50<br />
Gloucester Gloucestershire 24.24 143.22 -14.20<br />
Great Yarmouth Norfolk 25.04 147.96 -11.29<br />
Grimsby Lincolnshire 23.61 146.25 -11.78<br />
Guildford Surrey 25.45 144.84 -13.64<br />
Hastings East Sussex 26.22 146.01 -13.17<br />
Hereford Hereford <strong>and</strong> Worcester 23.89 142.79 -14.33
Location County Elevation Azimuth Polarization<br />
Holyhead Gwynedd 22.09 141.17 -14.51<br />
Ipswich Suffolk 25.35 147.08 -12.02<br />
Kendal Cumbria 21.95 143.56 -12.77<br />
Killarney Kerry 20.99 135.57 -17.99<br />
Kilmarnock Ayrshire 20.22 142.13 -12.79<br />
King's Lynn Norfolk 24.45 146.46 -12.04<br />
Kingston upon Hull Hum<strong>be</strong>rside 23.30 145.98 -11.82<br />
Kyle of Lochalsh Highl<strong>and</strong> 18.42 141.37 -12.23<br />
Lancaster Lancashire 22.17 143.40 -12.99<br />
Largs Ayrshire 19.97 141.80 -12.86<br />
Larne Antrim 20.35 140.47 -14.00<br />
Leeds Yorkshire 22.83 144.69 -12.45<br />
Leicester Leicestershire 24.00 144.74 -13.00<br />
Limerick Limerick 20.93 136.72 -17.07<br />
Lincoln Lincolnshire 23.70 145.62 -12.26<br />
Liverpool Merseyside 22.63 142.99 -13.52<br />
London Greater London 25.37 145.48 -13.15<br />
Londonderry Londonderry 19.65 138.93 -14.64<br />
Ludlow Shropshire 23.63 142.89 -14.12<br />
Luton Bedfordshire 24.93 145.26 -13.09<br />
Lyme Reg<strong>is</strong> Dorset 24.92 142.04 -15.41<br />
Maidstone Kent 25.83 146.07 -12.95<br />
Mallaig Highl<strong>and</strong> 18.59 141.16 -12.47<br />
Manchester Greater Manchester 22.87 143.85 -13.05<br />
Middlebrough North Yorkshire 22.30 145.38 -11.73<br />
Moffat Dumfries <strong>and</strong> Galloway 20.85 143.14 -12.46<br />
Montrose Angus 20.01 144.64 -11.02<br />
Newark upon Trent Nottinghamshire 23.74 145.24 -12.53<br />
Newcastle upon Tyne Tyne <strong>and</strong> Wear 21.78 145.03 -11.69<br />
Newhaven East Sussex 26.07 145.35 -13.57<br />
Newry Down 20.70 139.69 -14.75<br />
Newtown Isle of Wight 25.58 143.72 -14.51<br />
Northampton Northamptonshire 24.45 144.93 -13.09<br />
Norwich Norfolk 24.89 147.45 -11.56<br />
Nottingham Nottinghamshire 23.69 144.81 -12.81<br />
Oban Argyll & Bute 19.21 141.36 -12.71<br />
Oxford Oxfordshire 24.75 144.27 -13.71<br />
Peebles Borders 20.69 143.56 -12.09<br />
Pembroke Pembrokeshire 23.30 140.27 -15.84<br />
Penrith Cumbria 21.68 143.70 -12.53<br />
Perth Perth & Kinross 19.94 143.52 -11.71<br />
Peterborough Cambridgeshire 24.40 145.70 -12.54<br />
Peterhead A<strong>be</strong>rdeenshire 19.54 145.63 -10.16<br />
Pitlochry Perth & Kinross 19.57 143.31 -11.65<br />
Plymouth Devon 24.69 140.59 -16.37<br />
Portree Skye 18.13 140.90 -12.37<br />
Reading Berkshire 25.10 144.44 -13.76<br />
Rosslare Wexford 22.20 138.93 -16.21<br />
Scarborough Yorkshire 22.82 146.12 -11.49<br />
Settle Yorkshire 22.35 144.00 -12.68<br />
Sevenoaks Kent 25.70 145.72 -13.13<br />
Sheffield South Yorkshire 23.22 144.63 -12.70<br />
Shrewsbury Shropshire 23.32 143.02 -13.87<br />
Sligo Sligo 19.74 137.48 -15.74<br />
Southampton Hampshire 25.40 143.80 -14.37<br />
Stafford Staffordshire 23.49 143.74 -13.45<br />
Stirling Stirlingshire 19.99 142.84 -12.18<br />
Stoke on Trent Staffordshire 23.28 143.71 -13.36<br />
Stranraer Dumfries <strong>and</strong> Galloway 20.61 141.31 -13.56<br />
Stratford-upon-Avon Warwickshire 24.18 143.95 -13.65<br />
Swansea ( A<strong>be</strong>rtawe) Swansea 23.76 141.28 -15.35<br />
Swindon Wiltshire 24.24 143.41 -14.06<br />
Tain Highl<strong>and</strong> 18.54 143.28 -11.08<br />
Thirsk North Yorkshire 22.55 145.07 -12.06<br />
Thurso Highl<strong>and</strong> 18.05 144.11 -10.28
Location County Elevation Azimuth Polarization<br />
Torquay Devon 24.92 141.31 -15.96<br />
Tralee (Tra Li) Kerry 20.73 135.45 -17.92<br />
Truro Cornwall 24.40 139.56 -17.00<br />
Uig Skye 17.20 140.31 -12.17<br />
Ullapool Highl<strong>and</strong> 18.08 142.14 -11.54<br />
Waterford Waterford 21.90 138.12 -16.62<br />
Watford Hertfordshire 25.13 145.20 -13.24<br />
Westport Mayo 19.65 136.21 -16.62<br />
Weymouth Dorset 25.22 142.51 -15.22<br />
Wick Highl<strong>and</strong> 18.32 144.51 -10.19<br />
Worcester Hereford <strong>and</strong> Worcester 23.97 143.38 -13.95<br />
Workington Cumbria 21.37 142.79 -12.98<br />
Yeovil Somerset 24.86 142.45 -15.08<br />
York North Yorkshire 22.88 145.25 -12.10
D<strong>is</strong>h Alignment for Astra 2 (28.2E) (See www.d<strong>is</strong>hpointer.com for other <strong>satellite</strong><br />
setting parameters<br />
1 Find the Azimuth <strong>and</strong> Elevation angles on the table above for the nearest town<br />
(e.g. Brighton: Azimuth = 145.16 degrees, Elevation = 25.95 degrees)<br />
2 Using a compass or any other method identify South, for places with a<br />
elevation greater than 21 degrees then start with the d<strong>is</strong>h Vertical <strong>and</strong> with the LNB<br />
arm facing south <strong>and</strong> then turn the d<strong>is</strong>h eastwards to 5 degrees less than the Azimuth<br />
angle you have just found (e.g. Brighton 145.16 – 5 degrees start at 140 degrees), For<br />
places with an elevation less than 21 degrees the d<strong>is</strong>h start point will have to <strong>be</strong> with<br />
the d<strong>is</strong>h leaning slightly forward by 2 to 3 degrees (See elevation contours for Astra 2<br />
(28.2E)/Eurobird (28.5E) on the map above), most d<strong>is</strong>hes in the UK are an off-set<br />
design so the front of the d<strong>is</strong>h will look in the region of roughly vertical.<br />
3 Slowly s<strong>can</strong> (Side to Side Movement) across the sky to the Azimuth angle<br />
plus 5 degrees (e.g. Brighton 145.16 + 5 degrees fin<strong>is</strong>h at 150 degrees), th<strong>is</strong> should<br />
take a couple of minutes to do as the digital signal <strong>can</strong> take up to 5 seconds to lock<br />
<strong>and</strong> download a digital signal.<br />
4 Try to achieve an increase in signal quality, the signal intensity <strong>and</strong> sound<br />
bleeper level will follow accordingly, having s<strong>can</strong>ned <strong>be</strong>tween the start <strong>and</strong> fin<strong>is</strong>h<br />
points position the d<strong>is</strong>h where you received the highest signal quality th<strong>is</strong> may still <strong>be</strong><br />
low at around 12-17%<br />
5 If no signal quality increase <strong>is</strong> <strong>not</strong>ed then move the elevation up by half a<br />
degree <strong>and</strong> repeat the s<strong>can</strong> across the sky, repeat th<strong>is</strong> until an increase in signal quality<br />
<strong>is</strong> observed.<br />
6 Now focus on moving the Elevation (Up/Down Movement) without altering<br />
the Azimuth (Side to Side Movement) by moving the D<strong>is</strong>h <strong>and</strong> LNB assembly arm up<br />
<strong>and</strong> down slowly, once again an optimal point will <strong>be</strong> found for the Elevation.<br />
7 Move the Azimuth (Side to Side Movement) slowly to acquire the <strong>be</strong>st<br />
possible signal th<strong>is</strong> should <strong>be</strong> 65% or more.<br />
8 Move the LNB around in its fixing to achieve the maximum signal quality th<strong>is</strong><br />
will adjust the polarization angle which corrects for the curvature of the earth, some<br />
Low No<strong>is</strong>e Blocks have degree markings shown on the top of the LNB set th<strong>is</strong> to the<br />
polarization value given in the table above.