Amateur Radio

The English definition of amateur radio communication: "Amateur Radio". Amateur radio enthusiasts who meet the definition of the International Telecommunication Union (ITU) are "Radio Amateurs", and are generally called "HAM" in the world. Since "HAM" is interpreted as "ham" in English, "Ham" has become another name for enthusiasts engaged in amateur radio communication.

Amateur radio communication, with its unique charm, has attracted many enthusiasts from all over the world to participate in this activity. At present, the number of amateur radio stations in the world has exceeded two million. The distribution density of amateur radio stations in the world is proportional to the economic development of the region. Some developed countries such as Japan and the United States have a very high degree of popularity and a broad mass base. Take Japan as an example, on average, there is an amateur radio for every 100 people. This is a highly technical sport that integrates electronics, foreign languages, computers, and even astronomy, geography, regional culture and other knowledge. At the same time, it is very interesting. By participating in this sport, you can get a lot of fun and improve your quality of life. Especially for young people, it can cultivate their hands-on and brain-powered abilities, determine a good life goal, and become a useful talent for the country when they grow up. Therefore, by participating in amateur radio activities, you can learn knowledge, cultivate abilities, cultivate sentiments, and make friends under the guidance of interests and hobbies. It is an activity that is beneficial to physical and mental health. According to the International Telecommunication Union (ITU), amateur radio stations are radio stations belonging to "amateur business", and the definition of "amateur business" given by ITU is "formally approved radio communication business for self-training, mutual communication and technical research for personal interest, not for commercial purposes". Like chess and fishing, amateur radio is a hobby. All over the world, regardless of age, gender, and identity, from heads of state (former King Hussein of Jordan, former Indian President Rajiv Gandhi) to middle school students, can use radio waves as a medium and use amateur radio to communicate equally.

The Internet, also known as the Internet, is the world's largest information network and one of the largest knowledge treasures of mankind. As a communication tool, what are the differences and connections between it and amateur radio communication?

1. The transmission media are different: amateur radio communication uses radio waves to communicate; the Internet is based on public communication lines to transmit information.

2. The groups using the technology are different: Amateur radio operators are licensed amateur radio enthusiasts who have strong professionalism and technical skills; the Internet is a public means of communication and information resource, used by most people and can be mastered with a little learning, so the Internet user group is much larger than that of amateur radio.

3. Different requirements for reliability: Internet-style computer technology and communication technology are combined, and its advanced level is at the forefront of communication technology. The speed of information transmission is fast and the reliability is very high (as long as there is no human damage, such as hacker attack). Amateur radio communication relies on radio waves to transmit information. The communication effect is subject to factors such as weather, season, time, and electromagnetic environment, and there is a large degree of uncertainty. However, it is this uncertainty that makes enthusiasts work hard to explore, climb the peak of technology, and make significant contributions to human communication. This is also an important aspect to stimulate interest.

4. Different nature and scope of application: Today, with highly developed communication technology, amateur radio communication, as a hobby, has little practical significance. Just like fishing is not as cheap as buying fish, it is just to cultivate the body and mind through fishing, not just fishing for fishing. Amateur radio communication clearly stipulates that the content of communication cannot involve profit-making, state secrets, personal privacy, religion, etc.; it can only be used for communication experiments, technical research and making friends, that is, it cannot have any commercial color. This defines its scope and nature.

The Internet represents a group of infinitely growing information resources around the world, covering science, politics, military, economy, culture, entertainment, etc., covering almost every aspect of human activities. As a product of the information age, its practicality and efficiency have greatly accelerated its popularity, bringing huge economic and social benefits to people, making the commercialization of the Internet inevitable. The rapid development of the Internet economy has challenged some traditional industrial structures. Therefore, for the current Internet, the service objects are mainly business activities. The Internet is another major invention after major inventions such as telephone, television, wireless communication, and computer. Its powerful functions support all aspects of human activities and also affect the development of amateur radio communications.

The positive role of the Internet in promoting amateur radio communications

Today, amateur radio communication is not limited to telegraph (CW), single sideband (SSB), frequency modulation (FM) and other communication methods. Many new communication methods such as slow scan television (SSTV), digital packet communication (PACKET) satellite communication, lunar reflection communication (EME) and so on need to be completed with the help of computers, which cannot be separated from the corresponding software support. These software can be easily downloaded from some amateur radio websites on the Internet. Friends who like circuit experiments are not familiar with a certain electronic device, and can also check it on the relevant website. In May 1999, the BI5D IOTA (Island Communication) expedition of domestic enthusiasts in Dongtou Island, Zhejiang Province was a complete success. In the months before the event, the planners established an information exchange system based on the Internet, and set up an open special discussion group on the Internet to allow enthusiasts to participate in the discussion. A comprehensive and thorough activity plan was formulated, which made this large-scale activity with a large number of people able to be organized and coordinated quite successfully. They also set up a special webpage for this expedition to provide the latest news of BI5D activities to the outside world for enthusiasts to check in real time. Among the enthusiasts, many play the dual role of Internet users and hams (an international nickname for amateur radio enthusiasts).

Many friends have asked: "Nowadays, we have telephones and mobile phones, and we can communicate anytime and anywhere. Isn't amateur radio outdated?" This reflects a common problem - people don't know enough about amateur radio activities. In the United States, where communication technology is the most advanced, the number of amateur radio stations ranks second in the world. The United States is also the birthplace of the Internet, but the government is particularly supportive of this activity. In order to facilitate mutual recognition, enthusiasts only need to pay a fee of $1 to replace their license plate numbers with their own radio call signs. $1 is far less than the cost of making a license plate, which shows the support of the US government for amateur radio activities.

Looking back at the history of amateur radio communication, it has gone through nearly a century of development along with the development of radio. On June 2, 1896, at the end of the 19th century, Marconi of Italy invented radio communication, which opened a new era of human communication. At the beginning of the 20th century, radio communication was widely used in fields such as navigation. At this time, some people were engaged in amateur communication experiments. At that time, people believed that the longer the wavelength of the radio wave, the farther the communication distance. And shortwave with a wavelength shorter than 200 meters was regarded as a useless frequency band. In 1923, amateur radio enthusiasts in the United States discovered that this shortwave band, which was considered to be waste, was actually a golden band for long-distance communication. They successfully completed transoceanic communication with a 100-meter wavelength radio wave and very low transmission power. This major discovery is a monument in the history of communication. From then on, it laid the foundation for shortwave communication and the status of amateur radio communication. Others such as: single-sideband communication, heterodyne receivers, crystal oscillators, Yagi antennas, etc. are all achievements of amateur enthusiasts. To this day, these technologies are still widely used. It can be said that without the amateur radio of yesterday, there would be no glory of modern communication today. Their technical achievements have written a glorious chapter in the history of human communication and will be recorded in history forever.

This activity itself has always provided a steady stream of high-quality technical backbones for the country and society. Many cutting-edge technical talents in foreign military, electronics, aerospace and other fields come from the ranks of amateur radio enthusiasts. The five astronauts on the "Atlantic" space shuttle launched by the United States in April 1992 were all amateur radio enthusiasts.

The role of amateur radio communication in disaster relief cannot be ignored. When natural disasters such as earthquakes and floods occur, power lines, communication lines and other facilities will be destroyed. Communication lines are the "nerves" of wired telephones and mobile communications, and are also the hardware foundation of the Internet. Therefore, the entire communication system is very likely to be paralyzed. At this time, how important is communication for disaster relief!

Amateur radio stations are widely distributed, active frequently, and their enthusiasts have good technical qualities and a noble spirit of dedication. They will cooperate in a friendly manner and use emergency communication equipment to provide communication services for disaster relief. There are many touching examples of this abroad, such as the relief work for earthquakes in Guatemala and the former Soviet Union, tornadoes and forest fires in the United States, where amateur radio stations provided timely and effective communication services.

Amateur radio communication in my country is still in its infancy. Since the opening of personal amateur radio stations in 1992, only more than 3,000 people have obtained operating certificates, and the number of people who have opened stations is less than 2,000. Compared with developed countries, not only are the number of people small, but the overall quality of the team is also not high. Many people do not know what amateur radio is at all, which shows that it is far from being popularized. At present, the country is vigorously promoting and developing the amateur radio movement. With the implementation of quality education and the strategy of rejuvenating the country through science and education, schools in Beijing, Shanghai and other places have taken amateur radio as an important part of the second classroom to cultivate the specialties and abilities of young people, so that there are fewer star chasers and more science and technology seedlings among students. The popularization of the Internet has provided a shortcut and opportunity for the development of amateur radio. We should use the Internet, an advanced tool, to improve and develop amateur radio in my country and push it to a new height so as to catch up with international standards as soon as possible.