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In the amateur section, there are very strict norms, and they will be specially trained when testing. At 409m exemption, there are the following provisions: 1.Do not change the transmitting frequency and increase the transmitting power (including additional radio frequency power amplifier) without authorization. 2.Do not cause harmful interference to various legitimate radio business when using. Once harmful interference is found, use it immediately, and take measures to eliminate interference before continuing to use it; *Using public intercom, its communication quality is not protected by radio management agencies, and the radio business that may work normally should be caused by other normal jobs; 3.It is forbidden to use on the airport and aircraft; 4.It is forbidden to interconnect with the public telephone network, public mobile communication network and other telecommunications networks.

When the PTT button is pressed, the indicator light lights up red, indicating that the walkie-talkie is in the transmitting state and you can speak at this time.

With the emergence of mobile phones and the continuous upgrading of smart functions, mobile phones have eliminated BB machines, game consoles, single navigation screens, etc., but our walkie-talkies have not been eliminated.

Digital Mobile Radio or DMR is a modern technology that brings a lot of benefits both on a personal and organizational level.

With the help of repeaters, maintaining a reliable and stable communication network has become easier than ever before. So, let's take a closer look at the use and characteristics of repeaters.

​Car walkie-talkie is a very useful communication tool that can help drivers and passengers communicate effectively while driving. The walkie-talkie in the car is usually called a car walkie-talkie. It is a portable communication device that can be installed in the car to provide wireless communication functions for the vehicle.