Do you know the 8 ranges of use of the walkie-talkie?

First, professional walkie-talkie

Professional walkie-talkies usually refer to walkie-talkies with a transmit power of 4-5W and a frequency range of 136-174MHz or 400-480MHz. The most important feature of such walkie-talkies is that the call distance is long, and can reach 3- in the case of little environmental impact. 8 kilometers. Professional walkie-talkies are generally used in construction sites, property management, factory workshops, etc. The operation is relatively simple, there is no digital button, only two knobs are used to control the channel number, power and volume.

Second, commercial walkie-talkie

The commercial walkie-talkie refers to a walkie-talkie with a transmission power of 0.5-4W and a frequency range of 400-800MHz, and the talk distance is between 800 meters and 8 kilometers. Compared with professional walkie-talkies, commercial walkie-talkies are lighter in shape and can be connected to headphones, mostly used in restaurants, shopping malls and other occasions.

Third, the civilian walkie-talkie

The civilian walkie-talkie refers to a walkie-talkie with a transmission power of 0.5-1W and a frequency range of 409MHz. These walkie-talkies have a short talk distance, are small in size, and are much cheaper than professional and commercial walkie-talkies. They are usually available for 300-500 yuan and are suitable for individual users.

Fourth, amateur walkie-talkie

The amateur walkie-talkie refers to a walkie-talkie with a frequency range of 144-146MHz and 430-440MHz. It is designed for amateur radio enthusiasts. It is small in size and simple in operation. The disadvantage is that the call distance is generally small.

Five, explosion-proof walkie-talkie

There are few brands that produce explosion-proof walkie-talkies. The only three brands in the domestic market are MOTO, Weitex and HYT. The so-called explosion-proof means that the walkie-talkie can be used in flammable and explosive environments, such as coal mines, gas companies, gas stations and other places.

Sixth, railway intercom

 The railway intercom refers to the intercom designed for the working needs of the railway department. The transmitting power is generally 4-5W and the frequency range is 440-470MHz. Because the train is very noisy when driving, the audio output of the railway intercom is very demanding, and the voice quality will be clearer through voice compression.

Seven, police walkie-talkie

 The police intercom is a special equipment for the public security system. The frequency range is 350-370MHz or 370-390MHz. No one can steal or steal it in any way. Therefore, when selecting the walkie-talkie, users should pay attention to the transmission range of the walkie-talkie to 400-420MHz or 450-470MHz, to avoid unnecessary trouble.

Eight, car radio

The working voltage of the car radio is 12.5V, and the voltage of the car is generally 12V or 24V. Therefore, when the car radio is to work on a car with a voltage of 24V, it is necessary to install a transformer between the car and the intercom. The radio power of the car radio is relatively large, generally 25-50W, the signal is transmitted far, but can not be moved at will, can only be fixed in the car.