Our common electromagnetic radiation sources include radar systems, television and broadcasting transmission systems, radio frequency induction and medium heating equipment, radio frequency and microwave medical equipment, various electrical processing equipment, communication transmission stations, satellite earth communication stations, large power generation stations, transmission and transformation equipment, high-voltage and ultra-high voltage transmission lines, subway trains and electric trains, as well as most household appliances.
Computers, televisions, hair dryers... These household appliances, which are closely related to people's lives, all generate electromagnetic radiation. Compared to computers, household appliances, and professional electrical equipment, base stations are not one of the stronger radiation sources. Especially based on the application of digital technology, the radiation intensity of 3G mobile communication has been further controlled. According to authoritative testing, the electromagnetic radiation of a normally powered on laptop is approximately equal to the radiation of two communication base stations. The radiation output of a working microwave is 40 times that of a communication base station.
The most commonly used 2G, also known as GSM mobile communication, uses cellular technology. Mobile phones and base stations are connected in both directions through electromagnetic waves, and each base station has a certain range of functions. To ensure good call quality, it is necessary to establish multiple mobile base stations in multiple locations and increase signal coverage. And the recently popular 3G technology, whose base station is actually a low-power transceiver, is a regular radio wave, usually only 5-40 watts, much smaller than the thousands of watts of television transmission towers. Some citizens are concerned that the more base stations built in residential areas, the greater the radiation. According to Yeter Anger, an expert from the Swedish National Radiation Protection Association, people's anxiety is entirely caused by unfamiliarity with new technologies and is a misconception in their understanding. In fact, the higher the density of the base station, the lower the power transmitted by the base station. Meanwhile, the closer to the base station, the lower the transmission power of the mobile phone. That is to say, the more base stations are built, the less radiation people receive from telecommunications equipment. Because base stations are dense, communication signals will be better, so mobile phones don't have to work hard to release signals. It's like in a specific environment, when two people are talking up close together, they can hear clearly without having to shout loudly. Generally speaking, people do not need to worry about the adverse effects of radiation on the human body when they are 1-3 meters away from a 3G base station.
