Recently, after work, a cursory look at the BG8702-88 "electromagnetic radiation protection provisions" and GB9175-88 "environmental electromagnetic and permissible radiation intensity grading standards" of the two national standards, which found that the electromagnetic radiation protection limits, electromagnetic radiation sources of management, monitoring of the development of scientific and detailed provisions. In the Provisions on Protection against Electromagnetic Radiation, the basic limit value on radiation to the public is: "In a day of 24 hours, any six consecutive minutes according to the whole body of the specific absorption rate (SAR) (refers to the power of electromagnetic radiation absorbed per unit mass of the organism, that is, the absorbed dose rate) should be less than 0.02W/Kg". According to the export formula given in the Regulations and the calculation of the basic limit, the upper limit of the radiation power density that may be caused by the safety is: 40 W/m2-2.19 W/m2 in the range of 3-30 MHz, and 0.4 W/m2 (i.e., 40 microwatts per square centimeter) in the range of 30-3000 MHz. The Regulations on Protection against Electromagnetic Radiation stipulate that mobile radiocommunication equipment with output power equal to or less than 15W, such as land and sea mobile communication equipment and walkie-talkies, can be exempted from management (environmental protection management); and for other sources that "radiate into unshielded space", the output power of the source can be exempted from management (environmental protection management). For other "radiation to unshielded space" emission sources, if its equivalent power in the range of 0.1-3MHz within 300W, in the range of 3-300000MHz for 100W or less, is also exempt from electromagnetic management.
According to the above two national standards, as well as the relevant national regulations on the transmission power of radio equipment used by amateur radio enthusiasts, we can conclude that the equipment we use is in compliance with the national environmental protection requirements, and that the electromagnetic radiation it generates is negligible, and that it is safe. As long as we strictly follow the relevant provisions of the use of radio equipment, there is no need to worry about electromagnetic radiation will cause harm to themselves and others.
Even so, when engaging in amateur radio communication activities, we should try to shorten the transmission time as much as possible with low power, and minimize the possibility of electromagnetic pollution from ourselves, after all, the true meaning of amateur radio is not the pursuit of high power.
The above is a repost, now the handheld walkie-talkie is generally 100MHZ and 400MHZ, general high power is 5 watts! You compare yourself, you can rest assured!