Chapter 416: Wireless Telegraphy

ps: Since it has been on the shelves for more than two years, this week ushered in the first test of the recommended position, I hope you will vote more! Thank you so much! (2-in-1 Chapter)

The Han Army is a young but rich historical heritage of the army, a group of young officers with local formal military education and overseas study background, into the army to serve, and gradually become the backbone of the army, but because the army has not been established for a long time, many veterans who have experienced the Argentine war still remain in the army to serve, as grassroots squad leaders, deputy platoon commanders, non-commissioned officers and military commanders and other positions, this part of the soldiers is the most valuable group of talents in the army, they have rich combat experience and skilled combat skills,

However, on the other hand, those who have survived the rain of bullets and brutal battles believe in strength and combat exploits even more, and they admire the superior officers who have superior combat merits and outstanding command ability, and the training instructions issued by the superiors can be successfully completed, but for some of the high-achieving students who have just graduated from the army military academy and have returned from studying abroad in military academies, these veterans are often not convinced, and they will give opposing opinions based on their actual combat experience when the young superior officers propose training arrangements. Even some veteran noncommissioned officers and military commanders will take advantage of their relationship with their former superiors to ask company commanders and battalion commanders for instructions on the training arrangements and plans of grassroots units.

This phenomenon exists in all the main forces of the army, which believe in the first strength, and the Second Regiment of the Sixth Division to which Lu Rongting belongs is no exception.

Therefore, in the conversation with Shi Jintang and Zhang Yougong, two young battalion commanders, Lu Rongting specially emphasized: "The regularization of military education is the trend of the times, and now it is no more than ten or twenty years ago, when even if the cultural level was low, as long as you made military achievements, you would have the opportunity to jump from a small soldier to a platoon and company-level officer, but now it is different. In addition, more than ninety percent of the officers at the rank of lieutenant are high-achieving students who have graduated from the Army Military Academy.

After two years of pre-university teaching and four years of higher military education, the young graduates have accumulated knowledge of military theory, but because they lack practical combat experience, they will have a certain degree of rustiness and mistakes when they take up grass-roots leadership posts in the early days; at this time, non-commissioned officers and military personnel who are the backbone of soldiers point out the deficiencies and mistakes of their superiors within the scope of their duties, but they know that their superiors have made mistakes and do not point them out to their faces, but instead skip the level and report to the military commanders at the company and battalion levels, which is completely undesirable! ”

Lu Rongting's eyes were focused on the two of them, and he said earnestly: "The army pays attention to orderliness and prohibitions, platoon commanders should do what platoon commanders should do, and company commanders and battalion commanders should do things within the scope of their duties.

As the military commanders of the first and third battalions, the two of you must take the lead and set an example, take the initiative to communicate with the non-commissioned officers and young officers at the grass-roots level, communicate with them with reason and emotion, and let them understand the dangers of reporting to the command of the troops. ”

"The problem reported by non-commissioned officers and grass-roots officers who have overstepped their ranks is our negligence and mistake in the management of the troops; after the troops completed their year-end training and assessment today, Battalion Commander Zhang and I immediately set about putting things in order to rectify all kinds of problems that existed within the barracks and among the soldiers of the grass-roots units."

"If there is a problem, you must start to solve it immediately, you have served in the army for four or five years, and I believe that with your experience, you can solve the problems between non-commissioned officers and junior officers."

First reminding, beating, and then encouraging and motivating, Lu Rongting had a good grasp of the scale of management of his subordinate officers, even if he raised questions, he would not let his subordinate officers lose their prestige in front of the soldiers.

"Regiment commander, Director Tang of the General Staff Headquarters has arrived and is waiting for you at the regimental headquarters."

After finishing the conversation with the two, Lu Rongting was inspecting the soldiers' tactical drills when he met the regimental guards who had come to deliver the news.

"Director Tang? It should be Tang Yuanzhan, director of the Telegraph Department of the Army General Staff Headquarters. ”

Lu Rongting recalled the recent situation of the troops and guessed the identity of the arrival.

"Let's go, go back to the regiment headquarters and see what good things Director Tang has brought to us."

Lu Rongting took a step forward and walked with the guards in the direction of the headquarters of the Second Regiment of the Sixth Division. …………

The telegraph was first invented in 1837,

The first telegraph line in operation was first introduced in England in 1839. It was installed by the Great Western Railway for communication between two stations. The 13-mile long route is an analogue design invented by Charles Wheastone and William Cooke. The two obtained a British patent for their invention in 1837.

In the United States, Samuel Morse invented the telegraph at about the same time and patented it in the United States in 1837. Morse also developed a method of encoding letters and numbers for photographic purposes, known as Morse code.

In 1838, the year after the invention of the cable telegraph, the scientist David invented the first practical chemical telegraph, taking the first step in the direction of automatic telegraphy. The telegraph received and received telegrams by contacting a live needle with a chemically treated roll of paper that rotated by a clock mechanism.

It was published in London for several months, after which the inventor was forced to abandon his job due to financial difficulties and moved to Australia. Alexander Bain adopted his idea, and in 1864 he patented an automatic transmitter in which the perforated paper tape was given to a transmitter while the information was recorded at the far end of the line by a chemical recorder. At that time, experiments were demonstrated to transmit up to 400 messages per hour.

But for some difficult reason, these attempts, as well as the invention, were abandoned. A number of other developers have patented improved versions of the above-mentioned devices, but none of them have been truly successful.

However, the use of perforated paper tapes to operate automatic telegraph machines was adopted, such as the Wheatstone Automatic Telegraph System (1866), which was adopted by the Electric Telegraph Company in the same year. It has been found that on a line of about 280 miles, it can process 55 to 80 characters per minute, depending on the cross-sectional area of the wire used.

By 1879, thanks to structural improvements, it was possible to process at least 200 blocks per minute for the same distance under optimal conditions. By this time, about 170 such units were already in operation. The principles on which Wheatstone's invention was based are still in use today.

Since the invention of the first telegraph in 1837, after half a century of development, automatic chemical transmitters and submarine cable transmitters have been popularized, and the information exchange between countries around the world has become more convenient and close because of the limited telegraph.

In Europe, the British built a total of nearly 100,000 kilometers of cable lines, and in the Far East, in the Central Plains, where the Westernization campaign was underway, the total length of telegraph lines also reached 10,000 kilometers.

Limited telegraph has become the mainstream way of information dissemination in all countries in the world, and in South America, the limited telegraph laying length of Han reached 14,000 kilometers, and after the telegraph line was connected to each state capital city, the expansion was stopped in 1888, because in this year, Han made phased progress in the field of unlimited telegraph research and development.

Although the great development of radio communications and various electronic devices was a feature of the 20th century in the course of its original history, it is worth pointing out that many parts of the basic theory of electromagnetic radiation were completed before 1900, and as early as the 1880s, European scientists experimentally confirmed the applicability of this theory.

An inevitable conclusion of Clerk Maxwell's system of electromagnetic theory is that a "wave" can be generated by an electrical perturbation, which is similar to a light wave and travels at the same speed as a light wave. In fact, Maxwell saw light waves as electromagnetic waves as well.

Henrich Hertz (1857-1894) tried to confirm this prediction experimentally, confirming the presence of radiation in 1887 and determining many of its properties. His transmitter is an electric spark oscillator with two metal plates, one for the vibrator and one for the oscillator! The role of the antenna, his receiver also has a similar construction. If an electrical spark appears in a small gap in the receiving circuit, it indicates that the receiver has received electromagnetic waves radiated by the transmitter.

The Hertz system uses a wavelength of about 24 centimeters, so he can demonstrate the "light" properties of electromagnetic radiation, such as reflection and bias. Although Hertz's discovery and his experimental apparatus did not immediately achieve great development, his achievements were not all ignored, but because of the early attention paid by the Han Kingdom in the first ten-year development plan, Hertz's theory has been made practical breakthroughs and applications in South America.

For example, in 1885, Liang Jinrong, a scientific researcher in the Han Kingdom, successfully transmitted a signal to a distance of 0.7 kilometers in Chang'an with the help of a new type of geophone invented by Rutherford, a foreign scientist of the Royal Academy of Sciences.

In 1886, Lodge, another expatriate expert at the Royal Academy of Sciences, invented a method of using an induction coil as a tool for tuning an electrical resonator, and in July of the same year invented a metal powder detector for radio waves.

The inventions and research results of Liang Jinrong, Rutherford, and Rocky laid the technical foundation for the emergence of wireless telegraphy.

In February 1887, Tang Yuanzhan, a local scientific research expert in the Han Kingdom, completed the first experiment of wireless telegraphy operation and achieved success. Through painstaking efforts to study the rough theoretical part of the technical ideas on wireless telegraph communication provided by Li Mingyuan,

In June 1887, he developed radio propagation technology with longer wavelengths than those discovered by Hertz. He was the first to prove that wavelengths on the order of 300-3000 meters are more suitable for communication than shortwaves. Because of the disadvantages of short wave, it was not until the 20s of the 20th century that a relatively sensitive electronic detector was used, and it was possible to transmit short-wave long-distance signals with a wavelength of 10-100 meters. The short-wave wavelengths used by Hertz were not used effectively until more recent times.

Compared with the short wave discovered by Hertz, after using a wavelength of the order of 300-3000 meters as the propagation signal, within half a year, the signal transmission distance quickly increased from 0.7 kilometers to 20 kilometers, and in June 1888, the wireless telegraphy signal propagation distance exceeded 90 kilometers, and in the most successful experiment, it reached 107 kilometers. (In real history, the earliest person to apply wireless telegraphy to real life was Marconi, who transmitted a wireless signal to a distance of 1.6 kilometers in 1895,

At the beginning of 1899, China imported several Marconi wireless telegraphs, which were installed on the Liangguang Governor's Office, Weiyuan and other fortresses, as well as the ships of the Nanyang Fleet, for military command, and in the same year, Marconi had just persuaded the British Post Office to establish a wireless telegraph station.

In 1901, Marconi sent and received a transatlantic signal between Poldhu in Cornwall and St John's in Newfoundland. )

The technical superiority of the Han country in South America in the field of wireless telegraphy was about 8 years earlier than that of European countries, and the first batch of 21 wireless telegraphs developed and manufactured by the local Royal Academy of Sciences, with a limited signal transmission distance of about 90 kilometers, was only an experimental product, equipped with a small number of main forces, and did not have the conditions for large-scale deployment of troops before the manufacturing cost and signal transmission distance did not meet the expected expectations of the military. Because of the breakthrough made in the field of wireless telegraphy application, Tang Yuanzhan and another scientific researcher in the field of chemical industry became the only two people who won the hereditary title of nobility during the ten years of the emperor's reform after Zhou Sheng and Lin Shenhe.

Entering the headquarters of the Second Regiment of the Sixth Division, after the arrival of Lu Rongting, the commander of the Second Regiment, the director of the Telegraph Department adhered to the consistent principle and said cleanly: "The latest model of radio transmitter has a limited signal propagation range of 80 kilometers, and the Sixth Division of the National Defense Force is divided into four, one for the division headquarters, and one for each of the remaining three main infantry regiments. ”

"Wireless telegraph? This thing can send a signal without wires? ”

Even when he saw new things such as electric lights, telephones, and hydroelectric power stations in his homeland, and for the first time he saw a wireless telegraph that transmitted signals directly without wires, Lu Rongting couldn't help but be very curious.

"Of course you can, otherwise I wouldn't have come all the way to the Sixth Division camp."

Tang Yuanzhan maintained the inherent sense of urgency of scientific research workers, and urged: "There are a lot of things in the Royal Academy of Sciences and the Division, after sending this batch of wireless telegraphs, I will return to Chang'an to complete the follow-up research and development of wireless telegraphy, Commander Lu quickly signed his name, if you are still curious, you can directly ask the telegraph soldiers, each combat unit equipped with wireless telegraph machines, has arranged two trained telegraph soldiers, if you don't understand the problem, you can ask them directly." ”

"Director Tang is a busy man, your time is precious, we can't delay your research process."

Lu Rongting stared at the wireless telegraph machine curiously for a while, turned his head and joked with the other party, and then quickly signed his name on the material handover form.