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While
you are arranging your trips away, there is one more thing to plan for; your favourite
television programmes. Are you going to be able to watch that crucial game when
you're not sure where exactly you are going to be? Do you want to make sure you
watch all of the World Cup next time around? Is your resident 'Coronation Street'
fan desperate to see the latest episode? If
you are staying in the UK using an aerial on your TV can do the job quite nicely,
however as you may have discovered, that is not always the case. It's even worse
if you are trying to use a Freeview box and watch digital channels; the coverage
is rather patchy when you are out in the sticks. With
a very limited amount of extra equipment you could avoid these problems and, if
you want, you could be watching the football or any of your favourite programmes
on the BBC or ITV, from just about anywhere in Western Europe. Satellite
TV To
the layman satellite TV seems to be a bit of a mine field, this article is designed
to dispel that myth and impart a little knowledge to make it more available without
paying more than you need. To
watch satellite TV you will need a satellite dish, with an LNB, some way of mounting
the dish (tripod, pole or self seeking mechanism), a digibox and of course a television.
You can use any modern TV as long as you have the correct cables to connect it
to the digibox.
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Which
dish should I buy? The
larger the satellite dish the further from the UK you can receive satellite TV
signal. A satellite signal is beamed from a base station to the particular satellite
in question (there are many different satellites depending on the country of broadcast
and the channel). The pictures are then sent towards the earth where they are
picked up by individual satellite dishes. When the signal is sent from the satellite
they form what we call a footprint, which covers a certain area. Inside this area
you can receive signal on a small sized dish, on the edge of this area the signal
is more spread out and you must use a larger dish to receive the signal. If
you are staying in the UK you can use a 40cm dish, this is the same size as the
mini ski digital dishes that you see on houses. In the North of Scotland, West
of Ireland or Southern France you will require a 65cm dish. For Eastern Europe
to Poland and parts of Ukraine and Spain & Portugal you will need an 85cm
dish. Any larger than this and the dish becomes a little too large to mount on
or store in a motorhome. | | |
The
satellite dish requires a clear line of sight to the satellite in the earth's
atmosphere, so heavy tree coverage or a building will prevent the signal from
reaching the satellite dish; even bad weather can affect the picture on your television.
The same, perhaps obviously is true for mountains; if you are on the wrong side
of them you can be out of reach and therefore miss that vital game. Digiboxes
and Viewing Cards To
decode the signal received from a satellite a digibox is required. You can either
use a sky digibox, the one from home will work if you have 240V AC power available,
or a freesat box. Using a Sky digibox you must have a sky viewing card, again
you can use the one from home, or you can buy a 'Freesat From Sky' viewing card
which will give you all the available free Sky channels. If you use a freesat
box you can receive all the BBC + ITV Channels, Sky News, CNN and a list of digital
Radio Stations - about 100 channels in total. Do not confuse this with Freeview,
which is a terrestrial TV equivalent received through an aerial, requiring a Freeview
box to receive about 30 channels.
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Self
Searching Systems Vs Manual Searching Systems The
next choice you have is which system you go for; a self searching system will
find the satellite and be ready to watch within a minute of switching on. A manual
search system requires you to search for the satellite by moving the dish until
the signal strength and quality reach a suitable level. This can take a while
but, as in all things, practise makes perfect. The
self searchers are only available as a rooftop mounted unit and, as you might
expect, more expensive than the manual search units. However they do take out
the furcle factor of setting up, enabling you to get straight on to watching the
match. The
manual searching devices are available as rooftop mounted or as floor mounted
units (on a tripod). The rooftop mounted unit allows you to stay inside your van
when finding the satellite, whereas the tripod mounted unit means that you have
to go outside to set it up; obviously not great if the weather is a little iffy. For
this article the German manufactured Oyster system is the self searching option,
which requires enough space on top of the van for it to be stored; an area of
1500mm x 800mm with the height when stored being 200mm. On the inside of the van
the control panel can be located on any wall or bulkhead provided you can run
cables to the back of it. | | |
The
manual search rooftop mounted option is the Maxview Manual Crank-Up system. This
requires slightly less room on the roof than the Oyster; however it also requires
room on the ceiling below it for the crank-up handle and control mechanism. Another
option is the Maxview Semitronic roof mounted system; the elevation setting is
shown on a digital display so it is easier to set it accurately and it will remember
the last elevation of the satellite and revert back to it once switched on again.
This is handy if the van is in the same position, but if it has moved it will
need resetting. This makes setting up marginally easier if you don't want to spend
the extra for a self searching system. If
you don't want to have to hard wire your motorhome with a satellite dish you can
go for a satellite kit in a bag with a tripod for floor mounting. This requires
setting up the system whenever you want to watch, which involves attaching the
arm and the LNB to the dish and connecting it to the tripod before finding the
satellite. You also need to think about where it is going to be stored - an 80cm
dish is a large piece of kit in an already fully ladened motorhome. All
of the systems explained above work only when the vehicle is stationary, if you
require a system to work while in motion the Camos Sat Dome is the way to go.
This is a rooftop mounted, self-seeking device designed to track the satellite
while in motion. The dish is housed in a dome so, due to height restrictions,
it can only be 40cm diameter. General
fitting Once
you have found a place with enough space to put the rooftop mounted unit it is
fairly straight forward to fit, requiring one cable bundle running through the
roof. The Oyster is supplied with its own mounting plate which is sealed with
Sikaflex and fastened using self tapping screws; the unit is then fixed to the
mounting plate. The manual crank-up requires the same, one hole for the crank
shaft with the coax aerial cable running through the middle. The
positioning of the Semitronic system is a little more complex than the other options.
It has a digital control box and a 'through the roof' mast to be mounted on a
wall or bulkhead; the control box is for the elevation and the mast is to turn
the dish to the correct bearing. This system requires a live feed from the leisure
battery and an earth. The
Oyster units require a 12V DC power supply which can be taken from a number of
places depending on your vehicle; the best source is usually straight from the
leisure batteries. Also a switched live from the ignition is required so that
the dish retracts when the ignition is turned on. This is a safety feature to
prevent you driving away with the dish up, which can cause wind damage to the
dish assembly. The system is earthed to a good convenient spot. The
Digibox can be mounted anywhere as long as you can run the cable to it, this can
even be in a cupboard using a 'magic eye' to enable the remote control to work. |