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Mass consumers can also buy walkie-talkies, but before the purchase and use of walkie-talkies must apply to the local radio management committee (referred to as "no committee"), obtain a radio license and pay the frequency occupation fee. Since December 6, 2001, China has opened up the civilian walkie-talkie market, using 400MHz, with a transmission power of less than 0.5 watts, without any formalities.
There is no charge for calls made on regular walkie-talkies. No matter how frequently you use it, you only need to pay tens of dollars for each walkie-talkie each year, such as the use of public walkie-talkie does not need to pay any fees. Walkie-talkie antenna use precautions 1. Use only WEIERWEI original or approved antenna. An unapproved antenna, an antenna modified or added with accessories may damage the walkie-talkie or violate the regulations of the Radio Administration of the Ministry of Information Industry; 2. When in use, do not use the hand to take the antenna; 3. The walkie-talkie antenna can not be unscrewed, otherwise it is easy to burn the power tube when transmitting; Do not use a damaged antenna. If the damaged antenna touches the skin during launch, it may cause minor burns. Can you make a phone call with a walkie-talkie? With network support, walkie-talkie can be used to make phone calls. However, if it is only a conventional call between single machines, the function of making a phone call cannot be realized. The use of walkie-talkie will not have radiation problems The design of the walkie-talkie conforms to the relevant provisions of the Ministry of Information Industry  No. 869 document, and will not cause harm to the human body, and the use of the walkie-talkie is not close to the human body, but 5 to 7cm away from the human body. Cannot talk to other team members in the group First of all, confirm whether the frequency and sub-audio signal you are using are the same as other members of the group. If there is no problem, please confirm whether other members of the group are in the service area. When using the walkie-talkie, the other party receives a small sound or intermittent voice. Check if the hole in the MIC delivery place of the walkie-talkie is blocked (if not, please send it to the maintenance station for repair). Can not boot or power down frequently Check whether the battery contact piece of the walkie-talkie is deformed and whether the power switch is loose. How to deal with the machine after water After the machine enters the water, the battery should be unplugged immediately, the water should be thrown out forcefully, dried in a ventilated and dry place, and sent to the maintenance station for maintenance in the shortest possible time. Call distance becomes closer to poor sensitivity Check whether the antenna is in good condition and whether the antenna base is loose or damaged (if there is any problem, please send it to a professional repair station for repair).
1. Use the original or approved battery of Virito; 2. If metal conductors such as jewelry, keys or beads touch the exposed electrodes of the battery, all batteries may cause damage or personal injury. Please be careful with the battery has been charged, especially when it is put into a pocket, wallet or other metal container, the need for special attention; Charging should be carried out in an environment of 5 to 40 degrees. If this temperature range is exceeded, the battery life is affected and the rated capacity may not be fully charged.
Public walkie-talkie refers to a wireless walkie-talkie with a transmission power of not more than 0.5W and working at a specified frequency. Its radio transmission frequency, power and other radio frequency technical indicators must meet the following requirements: 1. Operating frequency (.9000;409. Unit: MHz): 409.7500, 409.7625, 409.7750, 409.7875, 409.8000, 409.8125, 409.8250, 409.8375, 409.8500, 409.8625, 409.8750, 409.8875, 4099125, 409.9250, 409.9375, 409.9500, 409.9625, 409.9750, 409.9875; 2. Modulation mode: F3E; Effective Transmit Power (EIRP):< 0.5W; 4. Emission frequency tolerance:< 5ppm; 5. Stray radiation of transmitter:<50uW; 6. Receiver spurious radiation:<20nW; 7. Channel spacing: 12.50kHz. Interphone electromagnetic interference, electromagnetic compatibility In order to avoid problems caused by electromagnetic interference and/or electromagnetic compatibility, the walkie-talkie should be turned off when the sign "turn off the walkie-talkie" is affixed. For example, hospitals or other occasions where health care medical equipment is used. When flying, the intercom should also be turned off as required.
1. System parameters: 1) The stronger the output power of the transmitter, the greater the coverage of the transmitted signal and the farther the communication distance. However, the transmission power should not be too large. If the transmission power is too large, it will not only consume power and affect the life of the power amplifier components, but also have strong interference, affect the call effect of others, and cause radiation pollution. The radio regulatory agencies of various countries have clear regulations on the transmission power of communication equipment. 2) The higher the receiving sensitivity of the communicator, the farther the communication distance. 3) The gain of the antenna, when the antenna is matched with the machine, usually, the height of the antenna is increased, and the receiving or transmitting ability is enhanced. The antenna used in the handheld walkie-talkie is generally a spiral antenna, and its bandwidth and gain are smaller than other types of antennas, and it is more susceptible to human influence. 2. Environmental factors: environmental factors mainly include path, density of trees, electromagnetic interference of the environment, buildings, weather conditions and terrain differences. These factors and some other parameters directly affect the field strength and coverage of the signal. 3. Other influencing factors: 1) The battery power is low. When the battery power is low, the call quality will deteriorate. Serious, there will be noise, affecting the normal call. 2) Antenna matching, the frequency band of the antenna is inconsistent with the frequency band of the machine, and the impedance of the antenna is not matched, which will seriously affect the call distance. For users, pay attention to tighten the antenna when switching antennas. In addition, antennas provided by non-manufacturers cannot be used casually, and antennas that do not meet the frequency points of the machine cannot be used.
1. After long-term use of the walkie-talkie, the control knob and the casing are easy to get dirty. Please remove the control knob from the walkie-talkie and clean the casing with neutral lotion (do not use strong corrosive chemicals) and wet cloth. The use of chemicals such as decontamination agents, alcohol, sprays or petroleum preparations may cause damage to the surface and shell of the walkie-talkie; 2. Handles the walkie-talkie with care, do not carry the antenna mobile walkie-talkie; 3. When not using accessories such as headphones, please close the dust cover (if equipped).
1. On cars with airbags, do not place the walkie-talkie within the range that may be involved when the airbag is deployed. If the walkie-talkie is in the area that may be involved when the airbag is deployed, once the airbag is deployed quickly, the walkie-talkie may hurt the personnel in the car with great impact; 2. In a potentially explosive atmosphere or occasion, unless the walkie-talkie is a specially certified explosion-proof walkie-talkie, the walkie-talkie must be turned off. In a potentially explosive atmosphere, electrical sparks can cause an explosion or fire; 3. Do not replace or charge the battery in a potentially explosive atmosphere. When installing and removing the battery, it may cause contact with electric spark and cause explosion; 4. Before approaching the blasting area and the area where the detonator is located, the interphone must be turned off to avoid possible explosion.
Conventional walkie-talkie call distance of up to 8-10 kilometers in open space, generally up to 3-5 kilometers in urban areas, in the case of tall buildings or mountains blocking, the call distance will be relatively short. When there is network support, the call distance of the walkie-talkie can reach tens of kilometers. Networking is the use of relay stations (also known as base stations or turntable), automatically receive the transmitted signal from the walkie-talkie, and its amplification and forwarding. Networking can expand the coverage of walkie-talkie communication, extend the call distance, the open area can reach 10-20km (hand-held walkie-talkie) or 30-50km (vehicle-mounted walkie-talkie), the building can cover the basement, underground parking plant, fire passage and other areas with serious shielding, usually called dead corners.
The walkie-talkie is mainly used in public security, civil aviation, transportation, water conservancy, railway, manufacturing, construction, service and other industries. It is used for liaison and command and dispatch among group members to improve communication efficiency and improve the rapid response ability to deal with emergencies. With the walkie-talkie into the civilian market, people travel, shopping also began to use more and more walkie-talkie.
Through continuous accumulation, continuous innovation, and gradually improve their own product chain, the company developed emergency communications software systems have entered the government and military customer market, and access to customer recognition and support.
Company address: Room 301, Block B, Zhejiang Digital Intelligence Engine Innovation Park, 131 Xiba Road, Yuhang District, Hangzhou City
Zip Code: 311122