The radiation frequency of signal tower base station is about 900 MHz, which is basically equivalent to that of TV. Communication signals are now using microcellular technology, and the transmitting and receiving power is very low, only the energy level of ten milliwatts and twenty milliwatts, which is not enough to cause radiation pollution.
At the same time, the antenna height of GSM base station is generally 35 to 55 meters, and the power density of a high-power base station with a transmission power of 20 watts is 0.6 microwatts per square centimeter in front of the antenna of 10 meter. Therefore, if the antenna height of GSM base station is above the safe value and there is a certain distance from residential buildings, electromagnetic waves will be further attenuated in the air, and people will be less exposed to electromagnetic radiation.