LNB Introduction

In Headend weather it is Digital Headend or Analog Headend the dishes are mounted on the top of the headend. Dishes are the important part of the headend which helps the headend to receive the signal from the satellite. There are generally two type of dishes are usedC Band DishKu Band DishRG-11 cable is used to connect the LNBs from the IF section of the Headend.

What is LNB In Digital Headend

LNB stands for Low Noise Band or Low Noise Block Down Converter. It is a physical device mounted over the dish in the center. Dish is designed to have the parabolic curvature to cover the maximum area. Satellite signals are very weak so we need to designed the dish to cover maximum area. A RG - 11 cable is used to receive the signals from the LNB to the IF section of headend.Thus it plays a very important role in headend to receive the signals from the satellite.

Working Of LNB

As we discussed above the LNB is mounted over the dish in the center to receive the signals at one point that is called the focal point. Satellite signals are focused by this area of dish to focal point. At the focal point LNB is mounted and it receive ve...

LNB Supply Voltage

For C Band DishFor 13 V supply voltage to LNB the LO frequency is 5.15 GHz in vertical polarizationFor 18 V supply voltage to LNB the LO freuency is 5.15 GHz in Horizontal Polarization.For Ku Band DishFor 13 V supply voltage to LNB the LO frequency is 10.75 GHz in vertical polarizationFor 18 V supply voltage to LNB the LO frequency is 10.75 GHz in Horizontal Polarization.

Know More About C Band And Ku Band