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Handheld walkie-talkie seven categories of detailed explanation First, commercial walkie-talkie Commercial walkie-talkie refers to the transmission power of 0.5-2W, the frequency range of 400-470MHz walkie-talkie, such walkie-talkie talk between 800 meters to 4 kilometers (depending on the transmission power of the walkie-talkie The size and the specific environment will vary.) The commercial walkie-talkie is lightweight and beautiful in appearance. The walkie-talkie is fastened to the waist through the belt clip of the walkie-talkie. You can free your hands and improve work efficiency by wearing a headset. The prices of commercial walkie-talkies are as high as that of professional walkie-talkies. They are generally used in shopping malls, supermarkets, retail trades, factories, and manufacturing industries.
Second, civil walkie-talkie civil walkie-talkie refers to the transmission power of 0.5W not more than 1W, the frequency range of 409MHz between the walkie-talkie, civil walkie-talkie, the general call distance is short, (open space 3 kilometers) is a national approval without a license can be used Wireless communication equipment. Civil walkie-talkies are compact and colorful, and the price is generally as low as 300,600 yuan, which is more suitable for personal travel, tourism, and restaurant use.
Third, the amateur walkie-talkie amateur walkie-talkie designed to meet the amateur radio use and design, production of radio walkie-talkie. This kind of walkie-talkie can also be called "amateur". In response to this amateur personal radio service, various countries have allocated special frequency bands for use by amateur radio sports enthusiasts. The frequency band that our country opens up is 144~146MHZ and 430~440MHZ, all countries in the world generally also are this frequency band. Amateurs only need to buy their favorite models, apply for a local radio network license, you can talk to other people.
Fourth, explosion-proof walkie-talkie In many wireless walkie-talkie brand with explosion-proof walkie-talkie brand is not much, now on the domestic market (MOTOROLA) Motorola (Vertex Standard) Weikexue, (HYT) - Haoyitong, Corisin (KIRISUN) ) Aikemu ICOM and other walkie-talkie brands. Explosion-proof walkie-talkie refers to a walkie-talkie that can work in inflammable and explosive environments, such as: coal mines, liquefied gas filling companies, oil depots, oil fields, petroleum, gas station chemical, petrochemical, coal mines, mines, natural gas, chemical plants, flour Processing plant, linen processing plant, coal processing plant, fire control.
5. There is no doubt that the railway walkie-talkie railway walkie-talkie is a special intercom equipment tailored for the actual needs of the walkie-talkie manufacturer according to the railway and railway departments. The transmission power is 4-5W, and the frequency range is optional within 440470MHz. The front face of the railway walkie-talkie generally has 2-4 function buttons, which are used for the selection of different environmental communications in plains and ramps and the switching between stations and locomotives. Because the train running noise is very large, the audio output of the walkie-talkie is required to be very high. The walkie-talkie is compressed by voice, making the call quality clearer and crisper.
Sixth, * walkie-talkie * intercom is * system-specific equipment, * interphone frequency range of 350-370MHz, 370-390MHz. No one may steal or misappropriate the frequency resources of the special walkie-talkie in any way. * The function of the walkie-talkie is more, generally the appearance is mostly in the keyboard type. When we purchase a wireless walkie-talkie, we should pay attention to the transmission frequency range of the walkie-talkie mostly (400-420MHz, 450-470MHz) to avoid unnecessary trouble.
7. The operating voltage of the car radio is 12.5V. Now the car voltage is divided into 12V and 24V. When the car intercom needs to work on a car with a voltage of 24V, a transformer must be installed between the car and the intercom. The transmission power of the car radio is 25-50W, the power is relatively large, and the signal is transmitted far. Car radios can only be fixed in one place and are not as convenient to use as handheld radios. Car radios are generally used in fleets.
Through the understanding of the classification of hand-held walkie-talkies, we believe that in the future purchase, we can purchase different walkie-talkies as needed.
Hand-held walkie-talkies are very common in daily life. What kinds of hand-held radios are divided into?