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Reception in distant countries
Thanks to the use of modern digital technology, the area in which a
certain satellite can be received becomes substantially larger.
However, all satellites that broadcast a programme that is interesting for
Central Europeans naturally also “aim” at Central Europe. If therefore
the receiving system is located outside of this area, then the antenna
looks “sideways” at the satellite. This effect is called “skew angle” or also
“polarisation angle” and is particularly strong in areas such as Portugal,
southern Spain, Morocco, Greece, Turkey, and very extreme on the
Canary Islands.
The reception electronics compensates this effect without any
intervention by the user, but in some cases it becomes necessary to help
a little bit “by hand”. This “helping” consists of turning the LNB
(reception head of the antenna) some degrees.
Setting of the antenna in different regions
(Skew angle correction, approx. values)
Astra I Hotbird
Southern Spain
Portugal
Morocco, Gibraltar
Canary Islands
Greece
Turkey, western Russia
Other regions
+15°
+25°
+20°
+35°
-12°
-15°
+10°
+15°
+10°
+25°
- 20°
- 17°
Viewing from the LNB into the mirror, positive degree numbers are
turned IN CLOCKWISE DIRECTION, negative degree numbers IN
COUNTER CLOCKWISE DIRECTION.
Corrections of less than 15° do not necessarily need to be implemented
as long as good reception is ensured.
30


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