Topfield TF 4000 Fi User Manual page 25

The other is K
18 GHz.
LNB
The signals of those frequencies are converted into from 950 to
2,150 MHz by a LNB.
The digital receiver has a database about broadcasting satel-
lites and their transponders, containing the following infor-
mation: satellite position, frequency range, symbol rate, po-
larization and LNB frequency corresponding to the frequency
range. So you might not have to specify the LNB Frequency
parameter. However, if you have selected the Other entry at
the Satellite Name parameter to specify a satellite that is not in
the satellite list, you might have to make out the correct LNB
4.1 Searching broadcasting services
band which ranges approximately from 12 to
u
When radio signals are sent through
cables, the higher the frequency is, the
more losses occur in the cable per unit
of length. The LNB (Low Noise Block
converter), which is introduced to settle
this matter, is used to take a wide band
of relatively high frequencies, amplify
and convert them to similar signals car-
ried at a much lower frequency, which
is called IF (Intermediate Frequency).
Select the Installation > LNB Set-
ting menu to configure the LNB
settings.
£
Pressing ¢
Name parameter displays a satel-
lite list in alphabetic order. Select
the satellite toward which your
antenna sets its face. If you can-
not find your desired satellite,
refer to § 4.2.
21
¡ button on the Satellite
OK