Development of productivity started in 1981

Chapter 35 Mobile Communication Equipment Manufacturing

When Wang Jiankun woke up in the morning, he felt a headache and his eyes were blurry. It was because he stayed up too late.

He slowly got up, went to the yard to fetch a basin of well water to wash his face and brush his teeth, then did some gymnastics for a few minutes, and his young body slowly recovered.

Walking on the streets in early autumn, the leaves of the trees on the roadside have turned yellow. When the breeze blows, the leaves fall to the ground in golden color.

The white Warrior shoes rustled as they stepped on the golden leaves, but Wang Jiankun had no intention of appreciating them. In his mind, he was communicating with Zhizi about the design of the communication base station and the text machine.

During the morning reading class, Wang Jiankun was holding an English book, but he was reading the news about IBM reported by ABC radio that he had listened to last night. In his mind, he was learning about binary principles, digital signal processing, encryption and decryption and other knowledge with Zhizi.

My deskmate Yu Zirun felt that Wang Jiankun was acting strange during the morning reading today. Although he was reading in English, he could only understand a few words. His eyes were not on the book, but staring at the English textbook without focus.

She called him twice before he looked at her, but she still mouthed to her not to speak.

I'll endure it for the sake of being the top student in the class. You'll be in trouble after the monthly exam, Yu Zirun thought.

After the morning reading get out of class, Wang Jiankun and Fang Guihua went to buy breakfast together. They made one extra steamed bun and two meat buns, giving one to Fang Guihua.

Wang Jiankun had been studying yesterday and this morning. He felt that he was consuming energy very quickly and his stomach was empty.

After the second math class, Wang Jiankun ran to the school gate to meet his father. He had driven back from Raozhou early in the morning.

Wang Jiankun asked him to remember to keep the lighters that he was going to send to Dexing Copper Mine when he returned this time, according to the last packaging requirements.

Although I have already sent a telegram home, it would be better if I could let my father say it again in person.

It seems that Peter, this customer, has some strength. If he maintains the lighters well, not only can he be sold abroad, but he can also help buy some scientific journals and magazines published abroad, and even some equipment that is not banned for his own research.

Through the exploration and learning in the past few days, I found that the more I study the knowledge, the more I don’t understand.

If you have to study everything from scratch on your own, then it will be impossible to travel in the universe in your lifetime. You should make full use of the research results that have been obtained, develop and utilize them on their basis, and conduct in-depth research, only then will it be possible to build an interstellar spacecraft.

After saying this, Wang Jiankun told his father to remember to come to his place this Saturday to pick up some things as he needed to test some equipment.

This Saturday is Mid-Autumn Festival, and the first and second year high school students will have a holiday. Together with Sunday, there are two days left, so Wang Jiankun plans to go home and hand over the goods to Peter.

After my father agreed, he drove home to pick up the goods. When he passed the county town in the afternoon, he would write down the situation at home on a piece of paper and leave it in the message room. This was faster and more detailed than sending a telegram.

At noon, after having lunch at school, Wang Jiankun returned to the waste recycling station and talked to Ye Wei about his situation in the army and asked him how the army was commanded.

Because Ye Wei's rank was not high, he only knew the command methods at the battalion and company levels.

According to him, if there is a fixed position and when defending against enemy attacks, the troops mainly rely on telephone commands.

The communications soldiers would connect the telephone lines from the regimental headquarters to the battalion and company positions. The company-level command of squad and platoon operations mainly relied on signal flags, communications officers running errands, and charge signals.

If it is an offensive operation, walkie-talkies will be equipped to the company level. The company-level commander will receive orders from superiors and report the combat situation to their superiors through walkie-talkies. Of course, small radio stations are also equipped.

The communication distance of a walkie-talkie is short, and calls can only be made within a dozen kilometers or even a few kilometers. The communication distance of a radio is longer, and can reach dozens or hundreds of kilometers.

If you are going deep behind enemy lines or conducting some reconnaissance operations, walkie-talkies are generally not provided.

One is close, and the other is easy to be monitored.

The radio is better. It takes a short time to send ciphertext, and the encryption is not easy to decipher. Even if it is deciphered, it will take a long time and will not affect the mission.

Based on Ye Wei's description, Wang Jiankun made it clear that the communication equipment he would make in the future would still use digital signals.

Although the conversion of digital signals into sound is still under research, it is not an urgent need.

Text information is transmitted via digital signals, and if the speed is fast it will not affect communication.

Moreover, digital signals are easy to encrypt and difficult to be monitored. They do not need to occupy the frequency band all the time and signals only need to be sent when communication is needed.

In the next four days, Wang Jiankun studied the design of base stations and text machines during the day and listened to English news at night. ABC was doing a series of reports on IBM personal computers. Based on the fragmentary information and Zhizi's analysis, Wang Jiankun designed a set of equipment for processing digital signals.

其中的处理器是频率6MHZ的16位处理器，有2M内存，可以处理3千5百个常用汉字，0~9这10个数字和26个大小写英文字母，还有16种常用标点符号。

Wang Jiankun did not develop any system as mentioned in the broadcast, but instead integrated the program into chips and circuit boards. This machine is specifically responsible for processing information and receiving, storing, and forwarding information according to the set program.

At present, we don’t need many base stations. It would be enough to put one each in Wangjia Production Team, the county seat, Dexing and Raozhou. We can gradually increase the number of base stations as needed in the future.

You can also build several base stations with a wider transmission range, which are specifically responsible for long-distance data transmission. A transmission range of 500 to 1000 kilometers should be enough.

The text machine also uses the same processor and a rechargeable nickel-metal hydride battery. A full charge can support 300 minutes of text transmission, which is equivalent to chatting by typing.

The manufacturing process is relatively simple. Wang Jiankun tries his best to buy and check and optimize the components that can be purchased. For those that cannot be purchased, he uses his super powers to manufacture them.

These components are based on what is written in the data. Most of them look the same as in the data. Wang Jiankun has no way to confirm if the internal components are different. However, the project should be kept confidential for the time being and only used by his family and reliable partners. He does not need to tell them the principles, just tell them how to use them.

The processor and storage devices are of course directly synthesized according to the design of Zhizi. The main element silicon is available everywhere, and the amount of phosphorus doped in it is very small, even the phosphorus in a box of matches cannot be used up. The same goes for nitrogen, which is enough in matchsticks.

If what is said in the news goes through many processes such as photolithography, etching, ion implantation, cutting, packaging and so on.

I don’t know how much equipment and space are needed, and I can’t restore those equipment now, and it is difficult to find all the chemical reagents.

The shell, buttons, screen and circuit board of the text machine were all directly synthesized, and then manually soldered and assembled to exercise my hands-on ability. Finally, a total of 10 text machines were made in the first batch.

Wang Jiankun's synthesis and assembly speed was very fast, but testing and debugging took a lot of time.

A base station was first installed on a small hill next to the house, connected to the electricity in the house. Because the power is only 100 watts and it is not sending and receiving signals all the time, the power consumption is still controllable.

After the base station was installed, Wang Jiankun took the two finished text machines for testing.

Turn on both text machines, pick up one of them and pull up the antenna, then enter the text message you want to send: "Text machine test first message, please reply if you receive it"

A total of 16 characters (including punctuation)

Then enter the number of another text machine 100002, and the red indicator light of machine No. 2 will flash.

Wang Jiankun pulled up the antenna, and the indicator light turned green and flashed, indicating that it was receiving information. In less than 2 seconds, the information was received and the indicator light went out, indicating that it had been received. Wang Jiankun pressed the button, and the screen displayed two lines of words: "The first message of the text machine test, please reply when received." Then he turned to the next page and it was also shown that the text machine number of the incoming letter was 100001.

Wang Jiankun then operated machine 2 and input "Machine 02 received, test successful."

Then enter the number of machine 01 and click the send button. The indicator light of machine 01 also flashes green and goes out after less than 2 seconds.

I picked up machine No. 01 and checked it, and the information was also displayed.

The basic test was passed, at least there was no problem with communication within the same base station.

The next step was to test the communication between the two base stations. Wang Jiankun went to Qiukou Commune, 20 kilometers away from the county seat. Ye Wei's father-in-law lived in Qiukou Commune. He asked Ye Wei to help communicate and connect the electricity to his father-in-law's house and install and debug the system on the back mountain.

Once the power is turned on, the base station system will flash green after completing the self-check, indicating that information transmitted by other base stations has been received and needs to be received by the terminal device.

Wang Jiankun pulled open the antenna of machine No. 04, and the information was transmitted within 2 seconds. The display screen showed the information sent by machine No. 03 more than an hour ago.

The digital signal is more user-friendly, easy to store, and the sending time can be set.

Then he used machine 04 to send a message to machine 03, and then shut down the base station, dismantled it and took it away.

After returning to the scrap recycling station, I checked machine 03 and found that the message was received within 2 seconds after it was sent.

After these two tests, the system was initially usable. Wang Jiankun packed the three base stations and eight text machines and prepared to go home to install them tomorrow.

That night, Wang Jiankun used his superpowers to synthesize the recycled iron into parts for the modified stamping machine, and made waste copper into electrical wires to use when he took his home to install the base station. He also went to the Le'an River to find sand to synthesize more than 5 pieces of glass for the table clock, which he transported back to the scrap recycling station by motorcycle.

Early in the morning on September 9, Wang Jiankun washed up and went to the Dongmenqiao market. He ate a portion of fried rice cake and a portion of steamed cake.

Then I bought some freshly-baked mooncakes, 10 kilograms of pork, and 5 kilograms of beef and returned to the scrap yard. I would wait for my father to come back and take them home so that we could have a better meal during the Mid-Autumn Festival.

Just after 9 o'clock, my father drove to the recycling station alone.

Before Wang Jiankun could ask, his father said, "I have already driven back and forth three times. Cheng Xing's friend saw that I was driving very steadily and asked me if I wanted to end the business early. So I paid off the purchase price yesterday and the car now belongs to our family."

"It's better to end it early. When you get home, take Wang Liping with you and let him learn to drive from you. It will be easier for the two of you to take turns in the future, and you'll have someone to take care of you on the road."

"That's good. He is pretty smart. He doesn't need to learn how to repair a car. He should learn how to drive quickly."

"Let's load our things into the car first. We'll go home early because we have to go to Raozhou early tomorrow morning."

The father and son loaded food, glass, stamping machine parts, a base station, three text machines, and two large bundles of copper wire into the car.

This time Wang Jiankun did not ride a motorcycle, but went back in a truck driven by his father.

On the way, Wang Jiankun modified the car, strengthening key components such as the generator, gearbox and drive shaft. In the future, he will also strengthen and repair the worn parts from time to time to try to avoid the car breaking down halfway.

After Wang Jiankun finished the modification, his father found that the truck seemed to be more powerful, and the clutch, accelerator, brake, etc. felt much smoother when pressed.

I got home at 10:. Today is the Mid-Autumn Festival and the factory is closed. Most of the people in the team are busy making dragon lanterns out of straw.

Wang Jiankun ran home to ask his cousin Wang Liping and uncle to help him move the goods. It was almost noon when they finished, so he called them together to have a sumptuous meal.

During this period, they were also told that they were planning to let Wang Liping follow his father in driving. They agreed without hesitation and said that they would accept being beaten and scolded during their apprenticeship and would not ask for any salary.

My father said that it would not be necessary. As long as I studied hard, I would be able to learn it in about half a year. He would give me a salary of 15 yuan per month during this period, and food and accommodation would be provided if I went to other places.

After half a year, we will see whether the team can buy a car. If not, you can take turns driving it with me. We will talk about the salary when the time comes.

My uncle and cousin happily agreed. Although the salary in the next six months was relatively low and not as good as working in a lighter factory, the opportunity to learn to drive was rare and they couldn't find anyone to help. Now that they had the chance, of course they had to seize it. If they learned how to drive, they would have another way out. After all, a driver was one of the eight major members, and they would have no worries in the future.

In the afternoon, Wang Jiankun went to the lighter factory to teach people how to replace parts. Once the previous batch of gray iron plates were used up, they would be replaced with iron coils. Wang Jiankun might not be at home at that time, so someone had to learn how to replace parts.

After learning it, Wang Jiankun asked his father and Wang Liping to help install the base station.

They didn't understand what a base station was, so Wang Jiankun said that this device was similar to a wireless telegraph and could be used to send text messages to contact others in the future. He would teach them how to use it once it was installed.

Wang Jiankun decided to install the base station on Fenghuangling, the top of which is the highest in the vicinity and the entire Zheyuan Commune is within its signal range.

Lead the wires from the team's main line and install them all the way to the trees on the roadside. When there is time in the future, let grandpa find someone to erect the electric poles and re-secure them.

I found a relatively flat place on the top of the mountain and used a wooden frame to fix the base station. After powering on, I took out two text machines to test them. They were able to send and receive messages smoothly, and I also received messages sent from the county town in the morning.

Then the three of them went down the mountain and returned home, and Wang Jiankun began to teach his parents and Wang Liping how to use the text machine.

Among the three, the mother learned the fastest and she had a solid knowledge of pinyin. The father and Wang Liping were much slower. The younger sister was listening beside them and she actually learned faster than the father and Wang Liping.

Wang Jiankun took the text machine in his mother's hand and started typing. He received a message from his sister: "Brother, I will use this to tell you when I miss you."

"Okay, but this machine can't be used outside."

"Got it, I'll use it at home."

The brother and sister started chatting on the text machine.

It took a long time before my father and Wang Liping successfully sent their first message.

After teaching everyone, Wang Jiankun explained that this was a mobile communication device he had researched, which had to be kept confidential and was still in the testing phase.

The one at home is kept by the mother, and the father carries one with him. He can take it with him when he drives in the future. By then, a base station will be set up in Raozhou and Dexing, and information can be sent and received within a 10-kilometer range of the base station. Several people said they understood.

The dinner was of course very sumptuous, with chicken, pork and beef all cooked. The family enjoyed a reunion dinner. During the meal, Wang Jiankun told his grandparents about the machine and asked them to ask his mother to send a message if they wanted to contact him in the future. Wang Jiankun would also send messages back from time to time.

Grandpa thought this thing was great and asked if he could sell it to others in the future.
Wang Jiankun said that communications are very complicated and this was made by himself for secret testing.

We will see if we can cooperate with the government after it matures. If we can, this technology, which is more advanced than that abroad, should be able to be used on a large scale.

After dinner and watching the dragon dance, we shared the mooncakes that Wang Jiankun bought from the county town and then took a rest. Tomorrow will be another busy day.

(End of this chapter)