2024年6月22日 · The Low-Noise Block Downconverter (LNB) is a critical component in satellite reception, converting high-frequency signals from the satellite to lower frequencies that can be processed by the receiver. Here’s a list of common LNB frequencies used in satellite communications: 1. C-Band LNB Frequencies.

The purpose of the LNB is to use heterodyning to take a block (or band) of relatively high frequencies and convert them to similar signals carried at a much lower frequency (called the intermediate frequency or IF).

commonly known as an LNB (Low-Noise Block Down-Converter) and makes the handling of the satellite signals much easier because the frequency band is lower. The down-conversion process reduces the signal frequency down into the L-Band that occupies 950 MHz to 1450 MHz

2007年4月23日 · The LO freq for C-band is almost always 5150, but the LO freq for Ku can be 9750, 10600, 10750, or 11250, depending on which band and/or lnb type you're using. As mentioned above, the usual CONUS bands are 3700-4200 for C-band and 11700-12200 for Ku, and the IF that your receiver will see is in the 950-1450 band.

2024年12月16日 · LNB frequency refers to the specific range of frequencies that an LNB operates on to receive and amplify satellite signals. This frequency range is typically between 3.7 GHz and 4.2 GHz, which is part of the C-band frequency range.

Local Oscillator (LO) frequencies have been standardised by LNB manufacturers worldwide for S, C, Ku and even Ka band frequencies. The LO frequencies have been selected to yield an output in the IF (950 MHz to 2150 MHz) range, for all types of …

2006年3月21日 · Explanation and description of LNB (Low Noise Block downconverter) as used for satellite TV and communications: C, Ku and Ka band VSAT info. How to make an inclinometer .

2020年7月30日 · This device is commonly known as an LNB (Low-Noise Block Down-Converter) and makes the handling of the satellite signals much easier because the frequency band is lower. The down-conversion process reduces the signal frequency down into the L-Band that occupies 950 MHz to 1450 MHz and allows for the use of smaller less expensive coaxial cable ...

2009年4月15日 · DVB-S接收机能够接受的频率范围为950~2150MHz，称之为中频频率，但卫星发射的信号频率范围为C波段3400~4200MHz，Ku波段10700~12750MHz，超过了卫星接收机的范围，所以就需要高频头 (LNB)来进行差频，C波段的差频计算为：LNB频率－卫星频点频率＝接收机差频，Ku波段的差频为：卫星频点频率－LNB频率＝接收机差频，见下表：

LNB又叫高频头（Low Noise Block），即低噪声下变频器，其功能是将由馈源传送的卫星信号经过放大和下变频，把Ku或C波段信号变成L波段，经同轴电缆传送给卫星接收机。