Chapter 596 Ultra-Long Distance Communication

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

Three telegraphs dedicated to the test are beeping; these three telegraphs are more complex and bulkier, and many of the parts can be replaced.

Zhang Hao just gave some 'conjectures', and these elites can demonstrate and experiment.

The person in charge of telegraph research is Ge Dong's disciple: Tang Tiandong. This is a boy who is only 16 years old, but he has already propped up the sky of the communication system.

There are two kinds of experiments conducted at this time. One is: research on ultra-high power, long-wave and ultra-long-wave communications; the other is research on short-wave.

Long-wave communication, because of its long wavelength, weak attenuation, and strong penetration, can travel far. The only problem is that because the earth is curved, too much distance will affect communication-in fact, this is a strong proof of the current round earth theory.

There is another kind that Zhang Hao pointed out recently: short-wave can also carry out long-distance communication, but the method is completely different, relying on the reflection of the electromagnetic layer!

In fact, under normal circumstances, Zhang Hao should not point out this before discovering the geomagnetic field, solar radiation, ionosphere, etc.; but isn't the current situation special? Although it's a bit of a seedling to encourage growth, it shouldn't hurt to come here once in a while.

The test has been going on for three days, and the long-wave communication is fine, as long as the power is high and the long-wave is good, it is great to add a super high signal transmission tower-the current signal transmission tower is as high as a kilometer, and all countries are building this kind of signal tower , and some even build directly on the mountain.

For example, the tallest signal tower of the Dayang Group is at least 8,000 meters above sea level, and it was built on Yuyang Mountain, the main peak of the Jiuyang Sect.

The tallest signal tower in the Qixia Kingdom was built by the country in 'Jingshan'. The Queen gave an order and used 400,000 tons of black steel and some steel as the skeleton, and even used hundreds of Huashenqi (Golden Body) Realm), plus the height of Jingshan itself, the signal tower is tens of thousands of meters high.

The practice world has created too many miracles by using powerful practitioners. Today, signal towers with a height of more than 10,000 meters cannot be said to be uncommon, but there are also many. Such as the country of Shaoze, the country of Canglan, the Red Lotus Sect and other big countries with overseas fleets, or holy places, most of them have this crazy building.

But the reflection of the electromagnetic layer is troublesome. Zhang Hao only remembers that there is such a thing, and it is short-wave; as for the short-wave frequency, launch angle, etc., he doesn't know. At that time, I just watched some popular science programs and remembered a little bit.

In contrast, long-wave communication is a typical example of simplicity and rudeness, and the electromagnetic layer reflection technology is a high-tech in telegraph technology.

Dayang Group didn't have much theoretical guidance for the experiment at this time, and it was completely biting the bullet and researching. In this case, Dayang Group can only "summarize technology from experience" instead of deriving technology directly from theory.

So this time, we can only continue to experiment, then collect data, and finally confirm.

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

But there is no better choice for now. Moreover, such an experiment once in a while is actually very helpful to Dayang Group's scientific research.

Signals are sent out continuously, and the messages sent from different angles and wavelengths are different each time. The base station belonging to the Dayang Group that receives this signal in the distance will send back the received signal. The signal of this experiment does not require forwarding, whoever receives it can send it back.

Today, Dayang Group's base stations are as far away as the southern section of Taotuzhou and West Kunlun; these two places are 30,000 kilometers away.

There is also Xuanwu Mountain, the distance is about 40,000 kilometers.

Signals are sent out wave after wave, and repeated tests are required at different angles, wavelengths, and directions.

The sound of Didi sounded in the laboratory, and information was constantly returned. The recorder needed to record each piece of information and then 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 an approximate data: using ultra-long wave communication, it can reach a distance of 20,000 kilometers, and problems begin to occur when it is farther away. Sometimes even if the message can be received, the signal will be lost.

However, with short-wave communication of 10 meters to 100 meters, within a suitable angle range, the electromagnetic signal should not be too weak or too strong, and it can be transmitted 40,000 kilometers away!

In the experiment just now, I actually received a return signal from Xianshan, which is far away in the sea! However, the returned signal is returned after two transfers.

"Is it really possible?" Tang Tiandong looked at the data in shock.

Before that, he had been working on the study of ultra-long wave communication; however, there were bottlenecks in long-wave and even ultra-long wave communication. The voltage continues to increase and the signal tower continues to rise, but the effective distance of the signal is increasing, but it is becoming more and more difficult. The signal loss of long-distance communication can no longer be ignored. A piece of information has to be sent several times, or even a dozen times, before it can be conveyed.

Zhang Hao looked at Tang Tiandong's surprised expression, and smiled, "Tiandong, I will study the technology later. I will go to explore the second layer of Xianshan in a few days, and there are still five days left. Look at the five days. Can a new telegraph system be constructed."

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

In this world, there is an idea of ​​"one day being a teacher and being a father for the rest of your life". Of course, Zhang Hao should make good use of this fine tradition.

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

Zhang Hao was a little shocked immediately, why did this couple come here?

"Come and get the blueprints!" When we met, Liu Qingqing was generous and direct, and asked for the blueprints. "Mr. Zhang, the day before we got married, you promised to give Honglou a complete copy of the warship's technical information. It's been more than half a month. Where's the information?"

Zhang Hao smiled: "I wonder why, just for this matter, half of the materials have been prepared. Since sister-in-law is here, let sister-in-law take away the half that has been prepared."

"Okay." Liu Qingqing didn't know how to be polite. The old lady turned her head and made Zhou Jue go. Why? Isn't it the relationship behind Zhou Jue: Xinglintang, Dayang Group and so on.

Zhang Hao asked Zhou Jue and Liu Qingqing to sit down, picked up the phone on the table and made a call. Then Zhang Hao said to Zhou Jue and Liu Qingqing: "Uncle, sister-in-law, wait for a while. The materials are at the shipyard, which is the seaside, and it will take at least two hours to deliver them here."

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

Zhang Hao has time now, so he is not in a hurry, and he talked to Liu Qingqing in more detail. Of course, it's all in the general direction, and I won't talk about the specifics, especially those related to the operation of Dayang Group. Moreover, Red House is different from Dayang Group. Some experiences of Red House 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.

Zhou Jue also listened with great interest. Now Zhou Jue doesn't interfere much with Dayang Group or Xinglintang. He is now honestly the head of the household department.

Now the Ministry of Households has been changed into the Ministry of Finance, which is also in charge of taxation, etc. The original functions of statistics such as population have been assigned to the new department.

Hearing Zhang Hao talk about the business situation is really crucial to Zhou Jue. Today's capitalism still has many threads that are elusive.

The outbreak of capitalism was too sudden, and the development was too rapid. All kinds of new things sprung up, and capitalism also triggered changes in the country and the times.

After talking for about two and a half hours, the materials were delivered. The secretary called first to make sure that it was convenient for Zhang Hao, so someone 'brought in' the information.

Boom...

Boom...

There are 8 wooden boxes of about 1.2 meters placed on the ground!

Liu Qingqing was stunned, "This... is the blueprint of the battleship? You didn't mean to bring all the information of all the warships in the port, did you?"

"To be precise, it's technical drawings, including designs, etc. And this is indeed the information of a warship, only 60% of it. The remaining 40% is still being sorted out. Sister-in-law can open it and have a look."

Liu Qingqing: ...