At 21:18 on September 13, the China Star 1E satellite developed by the Fifth Academy of Aerospace Science and Technology Group was successfully launched on the Long March 7A carrier rocket at the Wenchang Space Launch Site in Hainan. Then the satellite successfully entered the predetermined orbit, and the launch mission was a complete success. …
470-862MHz Yagi Antenna Yagi Antenna Definition It is an end-fire antenna composed of an active vibrator, a passive reflector and several passive directors arranged in parallel. In the 1920s, this kind of antenna was invented by Yagi Shuji and Uda Tailang of Tohoku University in Japan, which is called “Yagi Uda Antenna”, or “Yagi Antenna” …
Precautions when we install the antenna Whether the satellite TV receiving antenna is erected on the ground or on the building, the location selection is a primary link. We must fully consider the local natural environment and electromagnetic environment. The basis for selecting the location includes: the field strength of the satellite signal, the interference …
When we choose place to install antenna, do you know what to pay attention to? Read More »
The car antenna is also called the car antenna. Generally, the antenna on the car is used for the radio and radio on the car. It can be divided into the built-in antenna and the external antenna of the car. However, there are other antennas installed in the car according to different purposes. If the …
When the radio waves pass through the area of rain, the rain not only absorbs the energy of the radio waves, but also scatters the radio waves. This absorption and scattering together form the attenuation of radio waves. Scattering can also lead to large-scale radio interference and has a depolarizing effect on the radio waves. …
According to the structure shape, can be divided into single-polarized split(LNB) and double feed integration (LNBF) two kinds, including bipolar feed integration HF head more types, according to the oscillation mode can be divided into single oscillation and dual oscillation two kinds. According to the output port can be divided into single output, dual output, …
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Microwave antenna of Contents Microwave antenna Transmitting or receiving antennas working in meter wave, centimeter wave, millimeter wave and other bands are collectively referred to as microwave antennas. Microwaves are mainly propagated by space waves. In order to increase the communication distance, the antenna is erected higher. Among microwave antennas, parabolic antennas, horn parabolic antennas, …
What’s the antenna of Contents what is the antenna An antenna is a device that can effectively radiate electromagnetic waves to a specific direction in space or can effectively receive electromagnetic waves from a specific direction in space. We use the analogy of communication between people. The antenna is our ears and mouth. We convert …
common problems and solutions of satellite receiver The reason why the satellite receiver doesn’t have image and the corresponding processing method Reason 1: Is the connection of the set-top box incorrect? Solution: check whether the video and audio cables on the set-top box are correctly connected to the video and audio input jacks of the …
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Signals emitted by satellite transponders Satellite transponders transmit signals either in C-band or KU-band, and these signals pass through space into terrestrial satellite TV reception systems. The role of satellite ground receiving antenna The role of the satellite ground receiving antenna is to receive the weak satellite signal propagated from space to the ground, and …
After you find that you can’t receive the program, don’t worry about it. The exclusion method should be used to gradually eliminate all possible causes and identify the problem site. 1. First check whether the connection between the receiver and the TV is correct. 2. Then check whether the parameter settings of the receiver are …
What is the founction od satellite finder of Contents What is a starfinder The star finder, also known as the star finder, is a simple instrument used for the installation and adjustment of the satellite receiving antenna. It can be used as an indicator to adjust the antenna direction, feed position and polarization angle, etc. …
