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Twin Monoblock 23mm LNB ,4.3° for 80cm dish


Item: 3540


Specifically designed for the European DTH markets, this Monoblock LNB allows for dual satellite reception. It can be used for satellite broadcast reception (on an 80cm dish antenna) of the Astra 19.2E and 23.5E satellites spaced with 4.3°. It enables the signal distribution to maximum two Set Top Boxes with Single Tuner (or one STB with Twin Tuner). The LNB is optimized for High Definition transmissions and provides excellent Noise Figure performance. Designed to meet strict specifications and manufactured to the highest industry quality standards, this LNB is an ideal solution for satellite broadcast reception across Europe.


Main Features:

• Low Phase Noise, DVB-S2 (HDTV) compliant

• Low Noise Figure (0.2 dB)

• Low Power Consumption

• Very high Cross Polarization Isolation

• Very high Frequency Stability

Product Specifications


Low Band Input Frequency Range 10.7 ~ 11.7 GHz  
Low Band Output Frequency Range 950 ~ 1950 MHz  
Low Band LO Frequency 9.75 GHz  
High Band Input Frequency Range 11.7 ~ 12.75 GHz  
High Band Output Frequency Range 1100 ~ 2150 MHz  
High Band LO Frequency 10.6 GHz  
Noise Figure 0.2 dB Typ. (0.7 dB Max.)   
LO Initial Accuracy +/- 1.0 MHz Max.  
LO Temperature Drift +/- 3.0 MHz Max.  
Phase Noise (@ 10 kHz) - 80 dBc / Hz Max.  
Conversion Gain 50 ~ 60 dB   
Gain Ripple (Over 26 MHz Bandwidth) +/- 0.75 dB  
Gain Variation (Over Full Band)  +/- 4 dB Max.  
Image Rejection 40 dB Min.  
1 dB Compression Point (@ Output) 0.0 dBm Min.  
Control: Satellite A/B Selection DiSEqC 1.0 (Sat A* = ASTRA 19.2° East,  Sat B = ASTRA 23.5° East)
Cross Polarization Isolation 22 dB Min.  
Output VSWR 2.0 : 1   
In-Band Spurious - 60 dBm Max.  
Current Consumption 210 mA Max. @ 11 ~ 20 V  
Operating Temperature - 30 °C  ~  + 60 °C  
Output Impedance 75 Ω  
Output Connector F-Type (Female)  
Weight 460 g  
Recommended Dish Size 80 cm (F/D = 0.6)  
Monoblock Mounting Bracket 23 mm  
* Default receiving feed    
Frequently Asked Questions

What is a feedhorn?

The feedhorn is the part of a satellite dish system which gathers the reflected signal from the dish and focuses it towards the LNB.

What is an LNB?

An LNB - Low Noise Block (also called an LNC- Low Noise Converter), is used for communications (broadcast) satellite reception. The LNB is usually affixed either in or on the satellite dish.

What is an LNBF?

An LNBF is an LNB with an integrated feedhorn

What is a Monoblock LNB?

This design consists of two independent LNBs in a single case. The two LNBs can be automatically addressed with any DiSEqC 1.0 or higher receiver. In some cases they can also be addressed with ToneBurst / MiniDiSEqC. However, they are only available for satellites with a fixed 3 degree, 4.3 degree, 6 degree …spacing. In Europe, for example, there are monoblock single, twin and quad LNBs for the Ku band, which have a pre-defined spacing of 6 degrees (for Astra 1 / Hotbird , for example).

Why can I receive only one satellite with my Monoblock?

Monoblock LNBs are designed for a specific dish size, 80cm for example. If your dish is too small (70cm for example) or too wide (90cm for example) it is not possible to receive both satellites together. Please choose the dish size for which the monoblock LNB has been designed.