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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.

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.

Many users don't know how to "pair" channels when using walkie-talkies. Next, let's learn about the related knowledge.

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.

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.

In addition to its growing popularity, advances in DMR radio technology have also become a hot topic in industry news. Manufacturers and developers continue to innovate to enhance the capabilities of DMR radios, such as improving audio quality, extending battery life and extending range. These advancements not only improve the user experience, but also make DMR radios more adaptable to the evolving communications environment.