Which big brother or sister has used Baofeng’s BS-888s walkie-talkie? How effective is it? My purpose is to facilitate self-driving travel. Is it durable? Do you need to apply for a license?

What is a wireless walkie-talkie? A walkie-talkie is a device that allows you to talk to a person or a group of people at the touch of a button. Who uses wireless walkie-talkies? Today, walkie-talkies are used in many different situations and businesses: transportation, manufacturing, petroleum, procurement industry, government agencies, tourism industry, conference services, event organization, security in hotels and restaurants. Who would benefit from a two-way wireless intercom? Many companies have workers who move around on the job. They can use walkie-talkies and realize its benefits. If you need to contact someone who is constantly moving around or away, you need to repeat a message to the person, most of your company's communications are within the company, you need to respond quickly in an emergency, and you have a number of vehicles or personnel Moving around a fixed area, you manage a few pieces of equipment or several building groups, and your shipping and production schedules change frequently. How can radio walkie-talkies improve efficiency? A walkie-talkie is an essential tool for one person to communicate with a group of people in the company. With just one call, that person can talk to everyone in the group, no matter where they are located. Walkie-talkies can also be connected to local calls. How can radio walkie-talkies save costs? Walkie-talkies are different from mobile phones in that they are not billed based on call time. Comparing the cost of mobile phones and two-way walkie-talkies, users will find that walkie-talkies are more economical and practical. Today, when mobile phones are very popular, why do people still choose to use wireless walkie-talkies? This is because walkie-talkies have many unique features compared with mobile phones: walkie-talkies are not restricted by the network and can allow users to communicate easily in areas not covered by the network; walkie-talkies provide one-to-one and one-to-many call methods, In other words, the operation is simple, communication is freer, especially in the case of emergency dispatch and collective collaborative work, these features are very important, and the call cost is low. How far is the communication range of a wireless walkie-talkie? The communication distance of conventional walkie-talkies is generally 3 to 5 kilometers, but when there are tall buildings or mountains blocking the communication distance, the communication distance will be relatively shorter. When supported by the network, the call range of the walkie-talkie can reach dozens of kilometers. Can mass consumers buy wireless walkie-talkies? Mass consumers can also buy walkie-talkies, but in the past, to purchase and use walkie-talkies, they had to apply to the local Radio Regulatory Commission ("RC") to obtain a radio station license and pay frequency occupancy fees. Starting from December 6, 2001, my country has opened up the civilian walkie-talkie market. The use of civilian walkie-talkies with a transmission power of 400MHZ and less than 0.5W does not require any formalities. Can a wireless intercom make calls? If the network supports it, the walkie-talkie can be used to make calls. But just for regular calls between stand-alone phones, the function of making phone calls cannot be realized. Is there a charge for using a wireless walkie-talkie? There is no charge for making calls using a regular walkie-talkie. No matter how frequently you use it, you only need to pay the relevant frequency occupation fee for each walkie-talkie every year. If you use a public walkie-talkie, you do not need to pay any fees. Why are there frequency restrictions when using wireless walkie-talkies? In order to ensure that most users' calls are not interfered with and that frequency resources are used rationally, the National Wireless Station Management Committee divides the use of frequencies and stipulates that different industries use corresponding frequency readiness ranges. When purchasing a walkie-talkie, users must apply for a frequency point from the local Radio Regulatory Commission. How to understand the talking distance of wireless intercom? In the wireless communication profession, there is generally no concept of "distance" because ultra-short wave communication is line-of-sight propagation, and signals are blocked and converged by buildings, hills, woods, electromagnetic fields, etc., which affects the actual call distance and quality. Under ideal conditions (without any obstruction or interference), the communication distance of professional walkie-talkies is more than 10 kilometers, but the actual communication distance is generally only between 0 and 10 kilometers. When there are tall buildings or mountains blocking the communication, the communication distance The distance will be relatively short. When supported by a system station, the call range of the walkie-talkie can reach more than ten kilometers or even dozens of kilometers. For 0.5W walkie-talkies sold on the market, the manufacturer's nominal maximum talking distance is 3 kilometers. In fact, this talking distance is just a theoretical calculation data. It is based on the transmission power, which means that a 0.5W walkie-talkie can operate without any obstacles. , there is no electromagnetic interference that is strong or weak, so the actual communication distance is generally between 0-3 kilometers, far less than 3 kilometers. Many users often mistakenly believe that the call follow-up distance in any environment is 3 kilometers when purchasing walkie-talkies. This is a misunderstanding! It is impossible for any manufacturer to predict the user's usage environment, and of course it is impossible to give the actual call distance.

Things to note when using antennas: 1. Only original or approved antennas can be used. Unapproved antennas, modified antennas or antennas with added accessories may damage the radio or violate the regulations of the Radio Administration Bureau of the Ministry of Information Industry. 2. When using, do not pick up the antenna with your hands. 3. The walkie-talkie antenna cannot be unscrewed, otherwise the power tube will be easily burned out during transmission. 4. Do not use damaged antennas. If a damaged antenna comes into contact with skin while transmitting, it may cause minor burns. Precautions for battery use 1. Original or approved batteries should be used. 2. All batteries may cause damage or personal injury if metal conductors such as jewelry, keys or bead chain corners are exposed to the battery's electrodes. Please handle a charged battery with caution, especially when placing it in a pocket, wallet, or other metal window.

3. Charging should be carried out in an environment of 5-40 degrees. If the temperature exceeds this range, the battery life will be affected and the rated capacity may not be fully charged.