Medical research shows that non-thermal effects affect physical health. Although weak electromagnetic radiation (the power density of the electromagnetic radiation field is less than 1 mW/cm2) is difficult to cause tissue heating, long-term exposure to low-intensity electromagnetic radiation will have serious consequences. Patients often present with neurasthenia, including general fatigue, insomnia or drowsiness, memory loss, etc. The incidence of fatigue and memory loss is relatively high, and individual reports even reach more than 60%. The time and severity of symptoms are closely related to frequency, intensity, modulation method, personal tolerance, etc. The elderly have relatively poor tolerance. For the VHF and UHF bands, the signal jammer power density threshold of the electromagnetic radiation field is about 20-50 I/era2.
The national environmental electromagnetic wave hygiene standard stipulates: The area that meets the first-level standard is a safe zone, and the microwave radiation field strength is less than 10 ttw/cm. All people who live, work and live in the safe zone for a long time will not be affected by any harmful effects.
