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3. SERVICE
3.1 Reception practice - obstacles in front of the satellite system
All satellites are located above the equator, i.e. in the south from Europe; therefore always ensure a clear view
in southern directions.
Depending on where you are and the elevation of your satellite system, obstacles of varying heights may obstruct
reception.
3. SERVICE
3.2 Reception in distant countries
SKEW ANGLE ("POLARIZATION MISALIGNMENT ANGLE")
For the best possible reception in the peripheral areas of the south-western and south-eastern holiday regions,
it makes sense to turn the LNB in the corresponding cardinal direction. This compensates for the polarization
misalignment angle which is caused by the earth curvature.
This chapter describes how to carry out an LNB readjustment to optimise reception in the peripheral areas of the
coverage of TV satellites. Loosen the LNB screw connection for this and rotate the LNB by a certain angle. This
optimisation is only necessary in peripheral areas. We recommend this only to technically experienced persons.
All satellites that transmit a programme of interest to Central Europeans target Central Europe. So if the receiv-
ing system is outside this area, the antenna will look 'from the side' at the satellite. This effect is called "Skew
angle" or "polarization misalignment angle" and occurs particularly in areas such as Portugal, southern Spain,
Morocco, Greece, Turkey, and extremely on the Canary Islands. The receiver electronics usually compensate for
this effect without further intervention, but in some cases 'some' manual help is required. This 'help' consists of
turning the LNB (receiving head of the antenna) by a few degrees.
CYTRAC®
DX
10 Metres
10 Metres
9
Metres
5,3
Metres
42°
At 42° elevation (southern Spain):
A tree 9 metres high at a distance
of 10 metres does not interfere
with reception.
At 28° elevation (northern Germany):
A tree over 5 metres high at a distance
of 10 metres does not usually interfere
with reception.
28°
At 16° elevation (Northern Europe):
A tree with a height of only 3 metres
at a distance of 10 metres can already
interfere with reception.
10 Metres
3
Metr
e
s
16°
10 Metres
10 Metres
9
Metres
5,3
Metres
42°
At 42° elevation (southern Spain):
A tree 9 metres high at a distance
of 10 metres does not interfere
with reception.
At 28° elevation (northern Germany):
A tree over 5 metres high at a distance
of 10 metres does not usually interfere
with reception.
28°
At 16° elevation (Northern Europe):
A tree with a height of only 3 metres
at a distance of 10 metres can already
interfere with reception.
10 Metres
3
Metr
e
s
16°
10 Metres
10 Metres
9
Metres
5,3
Metres
42°
At 42° elevation (southern Spain):
A tree 9 metres high at a distance
of 10 metres does not interfere
with reception.
At 28° elevation (northern Germany):
A tree over 5 metres high at a distance
of 10 metres does not usually interfere
with reception.
28°
At 16° elevation (Northern Europe):
A tree with a height of only 3 metres
at a distance of 10 metres can already
interfere with reception.
10 Metres
3
Metr
e
s
16°