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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.

The Professional DMR Repeater boasts a range of advanced features, making it an excellent choice for reliable communication. One of the most significant features of this device is its ability to provide seamless connectivity across its coverage area.

If there is no sound or low sound during use of the walkie-talkie, you should first check whether the battery voltage is sufficient.

​Wireless walkie-talkies have revolutionized communication across industries, providing a convenient and efficient way for individuals to stay connected over long distances.

​A wireless walkie-talkie is a portable communication device that can communicate wirelessly in places without network coverage. Wireless walkie-talkies are often used in situations where instant communication is required, such as outdoor adventures, construction sites, security industries, etc.

Since 1993, Lisheng Communication Co., Ltd. has gone through 30 years and has experienced countless challenges and opportunities ...