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Superregenerative receiver module
Aug 09, 2018

The RF wireless module is a modular product of Digital Radio. It is a high-performance professional data transmission radio module realized by DSP technology and radio technology. The wireless module extends to many systems, industrially controlled switching io devices, 485 wireless transmission devices dw-m1, analog acquisition and control devices. From the use of the earliest button code, telegram, analog radio module plus wireless MODEM, to the current digital radio module and DSP, software radio; transmission signal also from code, low-speed data (300 ~ 1200bps) to high-speed data (N * 64K ~ N*E1).


Compared with developed countries such as Europe, America and Japan, China's wireless data communication technology started late, at least 20 years behind, but it developed rapidly. The concept of wireless digital radio station in China should be in the early 1980s after the reform and opening up, but in the 1980s, because China's software and hardware technology is still relatively backward, the system integration level is still relatively low, so the digital radio station also Only a few experimental areas, small-scale, small-volume applications in a few areas such as water, electricity, and tap water. Seeing the development prospects of wireless data communication, the National Radio Management Committee also set up a special frequency band for wireless data communication at 223~235MHz, which avoided the competition for limited frequency resources with 150MHz, 450MHz and other voice communication devices. The far-sighted approach has laid a good policy foundation for the rapid development of digital radio and remote telemetry systems in the future.


In the early 1990s, with the deepening of reform and opening up, important industries of the national economy represented by electricity, water conservancy, tap water, petroleum, environmental protection, and heat network developed rapidly, and the requirements for automation were also increasing. The market of China's remote telemetry system (referred to as "three remote" system or SCADA system) has gradually entered the stage of rapid development from the experimental stage, from civilian to military, the application field is more and more extensive, and the demand is also growing. The digital radio station then entered a period of booming. The most common and typical remote telemetry systems are: industrial automation, oilfield data acquisition, hydrology and water monitoring system (ie, basin flood control system), water pipe network monitoring system, railway signal monitoring system, heat network monitoring system, oil supply Automated systems such as tracheal network monitoring systems, GPS positioning systems, seismic survey reporting systems, drone systems, environmental monitoring systems, etc.


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