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S144_155_(GB)_SAT2 22.07.2005 13:46 Uhr Seite 148<br />
Antennas/SAT<br />
LNB (Low Noise Block)<br />
i<br />
How does a LNB work?<br />
LNB or sometimes also called LNC, also known as “Low noise block” or<br />
“Low noise converter”. These terms speak for themselves and slightly<br />
describe the basic function of the LNB.<br />
The programs transmitted by satellite are emitted in a very high frequency<br />
range. This signal is not cable compatible.<br />
This frequency range normally travels between 10.70 to 12.75GHz. The<br />
satellite transmits the signals to the reception antenna where there are<br />
guided to the LNB input.<br />
The signals are then amplified and filtered. The second task of the LNB<br />
is to convert the received frequency into a lower frequency range in<br />
order to smoothly transmit it to the receiver via the coaxial antenna<br />
cable.<br />
LNB outlook<br />
LNB is known as the reception unit being in the focal point of the parabolic<br />
reflector. The LNB converts the extremely high incoming frequency<br />
range transmitted by the satellite into an intermediate frequency of<br />
the receiver. Once converted into an intermediate frequency, the incoming<br />
signal is cable compatible. The LNB also operates as an amplifier<br />
for the incoming signals.<br />
LNB quality<br />
The primary quality of a LNB is a good continuous frequency response.<br />
Universal LNBs<br />
LOF: 9.75/10.6GHz<br />
In addition to the standard toggle frequency LOF = 9.75GHz, the universal<br />
LNBs also provide a second frequency with 10.6GHz. The second<br />
frequency enables digital reception and can be switched using the<br />
22kHz switch signal. These LNBs can receive analogue and digital programs.<br />
These LNB are available in the following versions:<br />
- Single (one receiver)<br />
- Twin: max. two receivers for analogue and digital reception.<br />
- Quad (multiswitch, multiple receivers: For use on multiple receivers<br />
using a multiswitch)<br />
- Quadswitch (LNB with integrated multiswitch)<br />
Single-LNB<br />
(1 output)<br />
Twin-LNB<br />
(Dual-LNB)<br />
(2 outputs)<br />
Quad-LNB<br />
(4 outputs)<br />
SINGLE LNBS<br />
Universal Single LNB 0.3 dB<br />
- For analogue and digital satellite channels e.g. Astra,<br />
Eutelsat or Türksat<br />
- To connect one analogue or digital receiver<br />
- Feed Ø: 40 mm<br />
- 14/18V vertical/horizontal switching<br />
- 22 kHz switching between low and high band<br />
- Incl. protective housing and protective tubes for F-plugs<br />
Technical data:<br />
- Input frequency: 10.7 - 12.75 GHz<br />
- Oscillator frequency: L1 = 9.75 GHz/L2 = 10.6 GHz<br />
- Output frequency: 950 – 2050 MHz / 1100 – 2150 MHz<br />
- Gain: 60 dB (max.)<br />
- Noise factor: 0.3 dB (min.)<br />
- Separately packed<br />
NEW<br />
Item No. MB BC<br />
10 pieces 030125 10 –<br />
TWIN LNBS<br />
Universal Twin LNB 0.3 dB<br />
- For analogue and digital satellite channels e.g. Astra,<br />
Eutelsat or Türksat<br />
- To connect two analogue or digital receivers<br />
- Feed Ø: 40 mm<br />
- 14/18V vertical/horizontal switching<br />
- 22 kHz switching between low and high band<br />
- Incl. protective housing and protective tubes for F-plugs<br />
Technical data:<br />
- Input frequency: 10.7 - 12.75 GHz<br />
- Oscillator frequency: L1 = 9.75 GHz / L2 = 10.6 GHz<br />
- Output frequency: 950 – 2050 MHz / 1100 – 2150 MHz<br />
- Gain: typ. 60 dB (max.)<br />
- Noise factor: 0.3 dB (min.)<br />
- Separately packed<br />
NEW<br />
Item No. MB BC<br />
10 pieces 030215 10 –<br />
QUADSWITCH LNBS<br />
Universal Quad-Switch LNB 0.3 dB<br />
- For analogue and digital satellite channels e.g. Astra,<br />
Eutelsat or Türksat<br />
- To connect four analogue or digital receivers<br />
- Feed Ø: 40 mm<br />
- 14/18 V vertical/horizontal switching<br />
- 22 kHz switching between low and high band<br />
- Incl. protective housing and protective tubes for F-plugs<br />
Technical data:<br />
- Input frequency: 10.7 - 12.75 GHz<br />
- Oscillator frequency: L1 = 9.75 GHz/L2 = 10.6 GHz<br />
- Output frequency: 950–2050 MHz / 1100-2150 MHz<br />
- Gain: 55 dB (max.)<br />
- Noise factor: 0.3 dB (min.)<br />
- Separately packed<br />
Quadswitch-LNB<br />
(incl. Multi Switch)<br />
NEW<br />
Item No. MB BC<br />
10 pieces 030214 10 –<br />
148 <strong>Hama</strong> September 2005<br />
BC = Blistercard