At present, the maximum transmitting power of hand-held walkie-talkie (that is, hand desk) is 8 watts, usually 5 watts. If you keep talking at this transmission power, it does do some harm to the human body, but there is no radiation when you keep listening. If you talk briefly within one day, there will be no obvious damage. Because when our GSM mobile phone contacts the base station, the instantaneous transmission power can also exceed 10 watt. We always live under various intensities of electromagnetic radiation. There are no walkie-talkies, mobile phones and various radio equipment around.
It should be noted that the power supply of the walkie-talkie cannot be fully turned on, and it should be adjusted appropriately according to the call demand. For example, some communities are small, and I see that many security guards still turn on 5 watts of power, which is unnecessary. 1 watt is enough to cover. If the transmission power can be controlled at 0.5 watts, there is basically no damage and electricity is saved. As for how to adjust the transmitting power of walkie-talkie, you can see the product manual. Some products can be adjusted manually, and some need to be written in the computer. In addition, many walkie-talkies are using the frequency band of 450 MHz 50 cm to obtain clearer voice, but if the frequency is too high, it will be more harmful. It is suggested to switch to the 2m band of 120- 130m, which will reduce some difficult damages and make the machine cheaper.