What kind of walkie-talkie is good?

Types of walkie-talkies:

(1) According to different fields of use, it can be divided into professional machines and amateur machines;

(2) According to the size of its transmission power, it can be divided into a base station (referred to as a base station), a relay station, an in-vehicle device (referred to as a vehicle platform), and a handheld device (referred to as a hand platform);

(3) According to the different frequency bands used, it can be divided into V-segment (VHF) machine, U-segment (UHF) machine, UV double-segment machine, and full-segment machine (including other frequency bands other than UV segment);

(4) According to its operation mode, it can be divided into channel type (only channels can be adjusted, and the communication frequency and other parameters of each channel are set by the manufacturer or the merchant in advance, and the user is not easy to change at will, only by the manufacturer or the merchant. Through the computer, with the programming software provided by the manufacturer to modify the frequency and parameters of each channel), frequency type (user can arbitrarily change the communication frequency and various parameters, generally with display and keyboard), frequency / channel type (can Switch to frequency or channel operation mode by function key);

(5) According to its working mode, it can be divided into single frequency waiting type (referred to as single guard, can only wait for a single frequency), dual frequency waiting type (referred to as double guard, can wait for two frequencies within a certain time interval).

In addition, according to its working principle, there is also a classification method, that is, a single sideband machine (using only one sideband of the signal spectrum - upper sideband or lower sideband), and a double sidebanding machine (using two sidebands of the spectrum). At present, most amateur-level intercom pairs are bilaterally operated, and only a few professional or special industries (such as maritime communication) use single sideband machines.

Which is good for the walkie-talkie?

Communication distance

The general communication distance within 2-3 km can be regarded as short-distance communication. For individual users, you can purchase a civilian walkie-talkie. For the unit user, you can purchase a small power walkie-talkie by applying. If you want to ensure the communication effect, you can choose a professional walkie-talkie. Need to communicate within the city, communication distance is within 3-10 km, you can consider buying a professional walkie-talkie. If it is farther away, it is better to use the base station to communicate with the handheld walkie-talkie, or the radio station and the radio station communication base station. We can use the car radio with a relatively large output power. If you need a longer distance or better communication quality, you can consider using a cluster walkie-talkie if you don't have a network. Because the radio intercom is supported by the radio network, the communication distance is relatively long, and the effective distance reaches 15-30KM. This type of walkie-talkie requires network support, so once it is disconnected from the network, just like the mobile phone is off the network, even if the two sides of the call face each other, it cannot be called. .

Transmit power

For radios, the amount of transmit power is critical. The same wireless device, the product with high transmission power and the price of the product with small transmission power are not small. Not only that, but the difference in transmission power also directly affects the data transmission stability of the wireless network. Therefore, paying attention to the transmission power of the selected device is also an important part in the process of selecting a wireless device. At present, the transmission power of the wireless network device is directly marked with the power value in the device specification, and some is the transmission power size by the distance of the transmission distance. Under normal circumstances, the wireless device's transmission power should be between 25mW and 50mW, or the transmission distance is between 50m and 200m. If you can't find the transmit power value on the device nameplate or in the manual, don't buy it at will-

Professional walkie talkie

Professional walkie-talkie refers to walkie-talkies with a transmit power of 4-5W and a frequency range of 136-174MHz or 400-480MHz. These walkie-talkies are usually between 3 and 8 kilometers away (depending on the specific environment). . It's relatively simple to operate because most professional walkie-talkies don't have a numeric keypad. There are only two knobs to control the channel count and power and volume switches. The shortcoming of the professional walkie-talkie is that it is relatively large and relatively heavy, but it is more prominent in preventing water ingress, anti-vibration, anti-drop and anti-aging, and the performance of the walkie-talkie is much more stable. The price of professional walkie-talkies is relatively high (500-2500 yuan), which is generally applied in construction engineering, property management, and factory workshops.

Commercial walkie-talkie

Commercial walkie-talkie refers to a walkie-talkie with a transmit power of 0.5-4W and a frequency range of 400-480MHz. The talker distance is between 800m and 8km (depending on the size of the intercom's transmit power and the specific environment) . The commercial walkie-talkie is light and beautiful in appearance. The walkie-talkie is attached to the waist through the belt clip of the walkie-talkie, and the hands can be liberated to improve work efficiency. The price of commercial walkie-talkies is relatively high compared to professional walkie-talkies, and is generally used in shopping malls, supermarkets, retail, factories, and manufacturing.

Civil walkie-talkie

The civilian walkie-talkie refers to a walkie-talkie with a transmit power of 0.5W and no more than 1W and a frequency range of 409MHz. The civilian walkie-talkie generally has a short talk distance (3 km of open space) is a wireless communication device that the state can approve without a license. The civilian walkie-talkie is small in size and diverse in color. The price is generally as low as 300--600 yuan, which is more suitable for personal travel, tourism, and restaurant use.

Amateur walkie talkie

A walkie-talkie is a radio walkie-talkie designed and produced to meet the needs of amateur radio enthusiasts. This kind of walkie-talkie can also be called "playing machine". For this amateur personal radio service, each country has opened up a dedicated frequency band for use by amateur radio enthusiasts. The frequency bands opened in China are 144~146MHZ and 430~440MHZ, which are also commonly used in countries all over the world. Amateurs only need to buy their favorite models, apply for local radio network access licenses, you can talk to other people. This frequency band is also generally used in countries around the world.

Explosion-proof walkie-talkie

There are not many brands of explosion-proof walkie-talkies in many wireless walkie-talkie brands. Currently there are only three brands of (MOTOROLA) Motorola, (VertexStandard), and (HYT)-Huitton. Motorola's explosion-proof walkie-talkie has fought against China's eight-layer explosion-proof walkie-talkie market with its superior performance. Explosion-proof walkie-talkie refers to walkie-talkies that can work in flammable and explosive environments. For example: coal mine, liquefied gas filling company, oil depot, oil field, petroleum, gas station chemical, petrochemical, coal mine, mine, natural gas, chemical plant, flour Processing plants, linen processing plants, coal processing plants, fire protection.

Railway intercom

The railway intercom is undoubtedly a special intercom equipment tailored to the actual working needs of the railway and railway departments. The transmit power is 4-5W and the frequency range is selectable from 440--470MHz. The front side of the railway intercom has generally 2-4 function buttons, which are used for the selection of different environment communication in the plain and ramp, and the switching between the station and the locomotive. Due to the large noise of the train, the audio output of the walkie-talkie is very high, and the walkie-talkie is compressed by voice, which makes the call sound more clear and crisp.

Police walkie talkie

The police intercom is a special equipment for the public security system. The frequency range of the police intercom is 350-370MHz and 370-390MHz. No one may steal or steal the frequency resources of the special walkie-talkie of the public security system in any way. The functions of the police intercom are many, and the general appearance is mostly in the keyboard type. When purchasing a walkie-talkie, we should pay attention to the range of the transmission frequency of the walkie-talkie (400-420MHz, 450-470MHz) to avoid unnecessary trouble.

Car radio

The working voltage of the car radio is 12.5V, and the current car voltage is divided into 12V and 24V. 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 transmission power of the car radio is 25-50W, the power is large, and the signal is transmitted far. The car radio can only be fixed in one place, and it is not as convenient to use as a walkie-talkie. Car radios are generally used in the fleet.

Transfer station base station

The specific function of the relay station and the base station is to transmit the received wireless signal through internal processing and transmit it at a greater power, thus achieving the expansion of the wireless communication distance. It is simple to say that some transfer stations and base stations are a wireless communication signal generator. As your company's business grows and grows, the need for two-way communication is also expanding. Use the repeater and base station to enhance your communication capabilities. And through our powerful dispatching and forwarding stations, we can promote the coordination of system resources and broaden the communication range of walkie-talkies.