In the research room of the Ocean Group, many teenage faces are seriously busy. These people are all elites jointly cultivated by Beidou Academy and Dayang Group in recent years.

Three test-specific telegraphs are rattling, and these three telegraphs are more complex and bulky, and many of their parts are replaceable.

Zhang Hao just gave some 'conjectures', and these elites were able to demonstrate and experiment.

The general director of the telegraph study is Ge Dong...... Disciple: Tang Tiandong. This is a teenager who is currently only 16 years old, but he has already held up the sky of the communication system.

At this time, there are two kinds of tests. One is the study of ultra-high-power, long-wave and ultra-long-wave communications, and the other is the study of short-wave.

Long-wave communication, because of its long wavelength, attenuation and strong penetration, can travel far away. The only problem is that because the earth is curved, it is too far away to affect communication – in fact, this is a strong proof of the current theory of the circle of the earth.

There is another one that Zhang Hao recently pointed out with his golden finger: short waves can also communicate over long distances, but in a completely different way, relying on electromagnetic layer reflection!

In fact, under normal circumstances, Zhang Hao should not have pointed out this before the discovery of the geomagnetic field, solar radiation, ionosphere, etc., but isn't the current situation special? It's a bit of a push, but it shouldn't hurt to come once in a while.

The test has been carried out for three days, and the long-wave communication is fine, as long as the power and long wave are good, and it is great to add an ultra-high signal transmission tower - the current signal transmission tower has been as high as a kilometer, and all countries are building this kind of signal tower, and some are even directly built in the mountains.

For example, the tallest signal tower of the Dayang Group, with an altitude of at least more than 8,000 meters, was built on the main peak of the Jiuyang Sect, Yuyang Mountain.

The highest signal tower in the country of Qixia was built by the state in 'Jingshan', and the empress ordered that a full 400,000 tons of black steel and some steel were consumed as the skeleton, and hundreds of gods were used (golden body realm), plus the height of Jingshan itself, the signal tower was as high as tens of thousands of meters.

The cultivation world has created too many miracles by using powerful cultivators, etc. Nowadays, signal towers with a height of more than 10,000 meters cannot be said to be common, but there are many of them. For example, the country of Shaoze, the country of Canglan, the Red Lotus Sect and other large countries with overseas fleets, or holy places, most of them have this crazy building.

But the electromagnetic layer reflection is troublesome, Zhang Hao only remembers that there is such a thing, or short wave, as for the short wave frequency, emission angle, etc., but I don't know. At that time, I just watched some popular science programs and remembered a little approximately.

In contrast, long-wave communication is a simple and crude type, and electromagnetic layer reflection technology is the high-tech in telegraph technology.

At this time, the experiment did not have much theoretical guidance, and it was completely the head. In this case, the research of Dayang Group can only 'summarize the technology from experience', rather than directly deriving the technology from the theory.

So this time, we had to keep experimenting, then collect data, and finalize it.

The technology obtained in this way is very fragile, because the technology can only be adjusted based on a small amount of data later. On the contrary, if the technology obtained from the theory is arbitrarily adjusted, it can reach its peak.

But there is no better option for the time being. And occasionally such an experiment is actually very helpful for the scientific research of the Ocean Group.

The signal is constantly sent, and every time the message is different from different angles and different wavelengths, the base station belonging to the Ocean Group that receives this signal from a distance will send the received signal back. The signal of this test is not required to be forwarded, and whoever receives it and sends it back can do so.

Today, the base stations of the Ocean Group have reached as far as the southern section of the island and the west Kunlun, both of which are 30,000 kilometers away.

There is also Xuanwu Mountain, which is about 40,000 kilometers away.

The signal is sent out in waves, and it has to be tested repeatedly at different angles, different wavelengths, and in different directions.

Didi's voice resounded in the laboratory, and information kept coming back, and the recorder needed to record every piece of information and mark it on the map.

This is a boring process, but Zhang Hao watched it with relish this time, and waited quietly beside him.

Until the evening, I got a rough data: with ultra-long-wave communication, it can reach a distance of 20,000 kilometers, and problems begin to occur even if it is far away, and sometimes even if the message can be received, there is a loss of signal.

With 10 meters ~ 100 meters of short-wave communication, within the appropriate angle range, the electromagnetic signal can not be too weak or too strong, and it can be transmitted to 40,000 kilometers away!

In the test just now, we actually received a return signal from Xianshan Mountain in the outer sea! However, the return signal was returned after two transfers.

"Can it really be done?" Tang Tiandong looked at the data in shock.

Previously, he had been committed to the study of ultra-long-wave communications, but there were bottlenecks in long-wave and even ultra-long-wave communications. As the voltage increases and the tower rises, it becomes more and more difficult to increase the effective distance of the signal. The signal loss of long-distance communication can no longer be ignored, and a piece of information has to be sent several times, or even a dozen times, before it can be conveyed in the past.

Zhang Hao looked at Tang Tiandong's surprised expression and smiled, "Tiandong, the technology will be studied later." In a few days, I will personally explore the second layer of the Immortal Mountain, and there are still five days to go. You see if you can build a new telegraph system in five days. ”

"Good teacher. Tang Tiandong called Zhang Hao a teacher, because Zhang Hao had indeed personally taught him and many students of the Beidou Academy.

In this world, there is the idea of 'being a teacher for one day and a father for life', and Zhang Hao must certainly make good use of this fine tradition.

The next day, Zhang Hao was dealing with things, but someone came to report that Zhou Jue and Liu Qingqing were visiting.

Zhang Hao was suddenly a little shocked, why did this couple of newcomers come here?

"Come and get the drawings!" When they met, Liu Qingqing was generous and very direct, and asked for drawings when he opened his mouth. "Mr. Zhang, the day before you got married, you promised to give the Red House a complete technical information on the battleship, it's been more than half a month, what about the information?"

Zhang Hao smiled: "Why do you think it's for this matter, just for this matter, half of the information has been prepared." Since my sister-in-law is here, let's take the half that has been prepared with my sister-in-law first. ”

"Okay. Liu Qingqing didn't know how to be polite. The old lady turned her head and soaked Zhou Jue, why, isn't it the relationship behind Zhou Jue: Xinglintang, Dayang Group, etc.

Zhang Hao asked Zhou Jue and Liu Qingqing to sit down, picked up the phone on the table and called. Then Zhang Hao said to Zhou Jue and Liu Qingqing: "Uncle, sister-in-law, wait a while." The data is on the shipyard side, that is, by the sea, and it takes at least two hours to reach here. ”

Two hours can do a lot. For example, Liu Qingqing took the opportunity to ask Zhang Hao about the management of the business group.

Zhang Hao had time at this time, but he was not in a hurry, and he talked to Liu Qingqing in more detail. Of course, it is all in the general direction, and the specifics, especially when it comes to the operation of the Ocean Group, will not be said. Moreover, unlike the Dayang Group, some experiences of the Red Mansion are not only useless, but may be harmful.

But even so, Liu Qingqing listened carefully, and finally even took a pen and paper from Zhang Hao's desk to record it.

Zhou Jue also listened with relish. Now Zhou Jue is no longer too involved in the situation of Dayang Group or Xinglintang, and he is now honestly the head of his household department.

Today, the Ministry of Household Affairs has been changed to the Ministry of Finance, which is also in charge of taxation, and the original functions of population statistics have been transferred to new departments.

Listening to Zhang Hao say that the business situation is indeed very important to Zhou Jue. Today's capitalism still has many veins that are elusive.

The outbreak of capitalism was too sudden, the development was too rapid, all kinds of new things sprung up like mushrooms after a rain, and capitalism triggered the changes of the country and the times.

After about two and a half hours of talking, the materials arrived. The secretary called in first, and made sure that it was convenient for Zhang Hao here, so someone 'brought in' the information.

Boom......

Boom......

Wooden boxes of almost 1.2 meters were placed on the ground, and there were 8 of them!

Liu Qingqing was stunned, "This ...... Are you going to bring in the information of all the battleships in the port?"

"To be exact, technical drawings, including designs, etc. And this is really the information of a battleship, and it is only sixty percent. The remaining forty percent are still being sorted out. Sister-in-law can open it and take a look. ”

Liu Qingqing: ......