Development of productivity started in 1981

Chapter 39 Receiving Ham Tribe Information

During morning self-study, English teacher Liu Xiaoting came to find Wang Jiankun. He put the shortwave radio into his schoolbag and followed Teacher Liu to the office.

"Why didn't you give it to me yesterday? I waited for a whole day in vain."

"I brought this back to debug it. I listened to the radio too late at night and forgot to put it in my schoolbag. Let me teach you how to use it."

After Wang Jiankun finished speaking, he took the radio out of his schoolbag and placed it on the desk without waiting for Teacher Liu to answer.

The battery inside still had power. Wang Jiankun pulled out the antenna and pointed it toward the window. He turned on the switch and tuned to the ABC channel. Then he took the headphones from his schoolbag and plugged them into the headphone jack.

He put on his headphones and listened for a while, then found that it was the evening news, so he took off his headphones and let Teacher Liu listen to it.

Teacher Liu put it on and listened for a while before taking it off. He said, "It seems like an American radio station is broadcasting news. It's a bit too fast and I can't quite understand it."

“You need to adapt slowly and feel the context first. Don’t try to translate it into Chinese and then understand it. Instead, listen to it in English and understand it.”

"It feels so difficult, can you record it and slow it down?"

"Of course not. Remember to keep my machine confidential. I have also disabled the external audio function. It is best not to let others use it. If others want to use it, just tell them that they can only listen to English."

"You modified it yourself? You can't put it out there?"

"Yeah, do you still want to use it? If not, I'll take it back."

"Yes, I'll adapt to the context first as you said."

"English requires listening and speaking more, until you can understand and speak without having to convert it into Chinese in your mind, then you have mastered it."

“Can I only listen to one station?”

"You can listen to three channels. Look at the FM switch. There are three positions, and each position corresponds to a channel. They are ABC in the United States, BBC in the United Kingdom, and our CCTV."

"Then do you know which station is best for me?"

"ABC in the United States is the best. You can listen to the evening news there in the morning and the morning news there in the evening. The rest of the time is mostly music and drama programs and advertisements, which are also quite interesting. You can listen to it all day on weekends when you don't have classes, but you have to remember to change the batteries."

"It's inconvenient for you to use the radio when I put it here. What are you going to do?"

"I have one myself, you can use it without worry. Practice your listening and speaking skills early so that your classmates won't keep learning dumb English."

"Well, I usually teach you how to dictate and read texts, okay?"

"Okay, okay, you should practice your American accent first, and then you can serve as an interpreter for the leader."

"You are good at talking. From now on, follow me to the teachers' cafeteria for lunch."

"No, I don't have to feel bad if you're done practicing. I can eat more comfortably with my classmates."

"Is my English as bad as you say? Really, go if you want or not, go to the morning reading, I'll take good care of the radio."

When he returned to the classroom, his gossipy classmate asked him what he had been doing with the English teacher.

"I gave some local specialties to my English teacher and asked him to take care of me."

"Hmph, forget it, you liar."

Wang Jiankun saw that she was angry, so he leaned over and whispered, "I brought a radio that can listen to foreign English broadcasts so that the English teacher can practice listening and speaking."

"Really? How did you get a radio like this? I only have a cassette player and I listen to the same few tapes all the time. Can you play it for me?"

"I've lent it to my English teacher. I'll let you listen to it after I'm done with it. You usually have a tape recorder, right?"

"Humph, stingy, remember to give it to me as soon as possible!"

"Okay, I won't forget it."

As usual, I shared some of the fried pork with pickled mustard greens for breakfast with my deskmate and Fang Guihua.

Today the weather was gloomy and the north wind was blowing, so Wang Jiankun went to Fang Guihua's dormitory to eat. After eating, he chatted with several other junior high school classmates.

As soon as the fourth class in the morning was over, the class monitor took Wang Jiankun and Fang Guihua out of the school and went to the same restaurant as yesterday.

Not long after we sat down, steamed pork with rice flour, roast chicken with chestnuts, fried pumpkin and kelp and pork ribs soup were served.

"Squad Leader, ordering such delicious dishes won't bankrupt you, right?"

"Don't worry about eating. You lent me your motorcycle for practice and also lent it to me to drive. It's only right that you eat something good. From now on, I'll get two dishes from here and we'll eat together at noon."

"Aren't you going home for lunch?"

"I also eat in my dad's cafeteria when I go home. Everyone is busy at noon, so we all eat in the cafeteria. It's nice to get food here and eat with you guys."

"Okay, then let's eat together from Monday to Friday. After we get the food, we'll all go to where I live and eat."

After the Clean Plate Operation was completed, the three men walked towards Wang Jiankun's residence.

Let the squad leader go out with the motorcycle to Shuxiang Road to practice, and let Fang Guihua try to ride by passing under the triangle bar.

After seeing how well they were practicing, Wang Jiankun decided not to accompany them.

Let the squad leader decide where to park the bike after he becomes proficient in high-speed riding. He should leave the bike there and not take it away. He will go to the post office to apply for registration of the shortwave radio station.

The post office is also on Tianyou Road, very close to the school. Wang Jiankun took his student ID and walked towards the post office.

When he arrived at the post office and asked the staff how to apply for a shortwave radio license, the staff said they didn't know and had never handled it before, and told him to ask his leader or other department.

I felt a bit depressed. Seeing that the staff didn't seem to be shirking their responsibilities, it seemed that this place had never handled the matter before.

I didn't want to go to my deskmate's father so early, but in order to open up communication channels with foreign countries as soon as possible, I can only repay the favor. I hope I don't leave a bad impression.

Before the afternoon class, Wang Jiankun found his deskmate and said, "Yu Zirun, can you do me a favor?"

"What kind of help? Tell me."

"Just help me ask your father how to apply for a shortwave radio license. I want to apply for one."

"Shortwave radio? What's that?"

"To put it simply, it is a device that sends and receives radio waves. The wavelength of the electromagnetic waves emitted by this radio station is in the shortwave range, so it is called a shortwave radio station. It can be used for long-distance communication."

"You want to contact someone far away? Who? You're not going to pass on information to the bad guys, are you?"

"What are you talking about? Am I that kind of person? And even if I want to pass on information, why would I need to apply for a license?"

"Then why did you apply for a license?"

"Well, to satisfy your curiosity, I applied for a license just to get a dedicated call sign and channel, so that I can learn radio knowledge from people abroad, learn foreign languages, and learn about the latest scientific research."

"I don't know how impressive it is. Since you are so eager to learn, I will go back and ask my dad for you."

"Thank you, you are a good person and helped me out of my urgent need."

"That's good to know. Then take me to see your shortwave radio. I've been watching you drawing. Is this thing really that fun?"

"No problem. I should be able to make it after the license is applied for. I'll take you to play with it then."

Wang Jiankun was temporarily relieved when he saw that his deskmate agreed. If her father couldn't handle it, he would ask the class monitor or ask Cheng Yong in Raozhou to help find out how to handle it.

During this time, you can practice assembly and welding by yourself. It is best to build the shortwave radio before the application process begins.

And I have to find another house, somewhere close to the hills with water and electricity.

The apartment I'm renting now has a mobile communications system installed and is quite close to the transmission tower of the post office, which makes it a bit inappropriate.

After dinner, Wang Jiankun told Fang Guihua that he would need the bicycle later and asked him not to practice riding today. Then he went back to ride his bike to look for a house.

Follow Chaxiang Road towards the mountain and you will find that most of the houses on the roadside are single-story tiled houses.

We found a place called Yu Yu Garden. Behind this residential area are several small hills, which are estimated to be about 6 to 70 meters high. It would be great to install the transmitting antenna on the hill.

We also see that every house here has been connected to the electricity grid, so there should be no problem with electricity supply.

He got off the car and pushed the wheel towards a few houses near the mountain. At that time, every family was having dinner. Wang Jiankun asked each family one by one. One family said that they had a small house that was empty and could be rented out. Wang Jiankun asked someone to take him to see it.

This is a house for storing farm tools and raising chickens. There is a small yard with electric wires, but it is full of farm tools and debris that need to be cleaned out.

I discussed with this family and decided to rent the house starting the day after tomorrow. The rent is 12 yuan per month, and the water and electricity bills are 2 yuan.

Ask the landlord to clear out all the debris in the house tomorrow and leave an empty room for him, and the weeds in the yard also need to be cleared.

Just pay a deposit of 2 yuan first, and have a verbal agreement. Then I will draft a formal contract to sign the day after tomorrow.

After the discussion, I rode my bike to school. When I parked my bike at the school gate, I saw the monitor also parking his motorcycle. "Jiankun, where have you been? You ran away as soon as the get out of class was over."

"I rented a house and planned to install a radio station for fun."

"Radio? If you have something to say, can't you just call or send a telegram? Why do we need a radio station?"

"I'm interested and want to try to study it."

"Do you plan to buy a finished product or assemble it yourself?"

"Wouldn't it be more fulfilling to assemble it yourself? You know about radio stations too?"

"I don't understand. I see my brother fiddling with it all the time, often using a radio to contact his comrades."

"Then can you take me to your brother's radio station? I can use it as a reference."

"Sure. How about I take you there on my motorcycle after class tonight and then bring you back?"

"Okay, it's settled."

After the evening self-study get out of class, Wang Jiankun followed the class monitor to his home. His home was next to the government compound, where there were dozens of two-story buildings with courtyards.

I couldn’t see clearly at night, but I just felt that it was very quiet here and the street lights were very bright.

When the squad leader arrived near this place, he slowed down the car to about 20 mph and tried not to make too much noise.

He did not take Wang Jiankun into the main building, but went to a small house on the edge of the yard.

The furnishings inside were simple, with a single bed, a desk with a chair, and a cupboard filled with many things, including several models made of bullet shells.

There is a radio with a military green shell on the desk, with headphones and a microphone. The antenna should be connected to the tall bamboo pole standing outside. I saw some wires on it when I came in just now.

"My brother didn't come home today, and I don't really understand. You can take a look first, but don't turn on the power. I'm afraid my brother will beat me to death if I break it."

"Okay, I'll just take a look at the model and your configuration, no need to power it up."

"Did your brother tell me what the maximum communication range of this radio station is?"

"I heard him say the maximum range is less than 2000 kilometers. He said this model is an old model that has been eliminated, but it is enough for him. Most of his comrades who use radios can be contacted."

Wang Jiankun took a look at it, and of course mainly used his superpowers to project it into his mind, and asked Zhizi to help analyze and study it.

After looking around for a few minutes, he had a clear view of the exterior, so he said, "Captain, I've got it, please take me back."

"That's good. Why don't you come back and see my brother when he's home someday and let him teach you."

"It would be great if there is a chance, but I don't have time on Sundays."

"I'll make an appointment with my brother at noon tomorrow or the day after tomorrow. Come over at noon then."

"Okay, please."

"It's not a big deal. My brother also wants to find some like-minded friends. You should be able to discuss this with him."

After saying that, he sent Wang Jiankun back to the recycling station.

Wang Jiankun quickly washed up and began to use his super powers to synthesize components.

The antenna system is relatively simple. Wang Jiankun synthesized it using his super powers to minimize impurities, which can minimize the loss of electromagnetic waves in the antenna.

The capacitors, resistors, diodes, tertiary tubes, crystal oscillators, switches, transformers, inverters, etc. are combined into 2 sets.

Although these things are small in size, the structure and elemental composition of each one are not exactly the same, so it is very energy-consuming.

After completing the synthesis, Wang Jiankun did not solder or assemble the parts. He sorted the components and put them on the desk before going to bed to rest.

The next day at noon, the squad leader took two meat dishes from the door and took them to the waste recycling station. Wang Jiankun and Fang Guihua also got their meals and came to the yard. The three of them ate at the same table with Ye Wei.

After eating, Wang Jiankun rode his bike to Yuyu Garden, signed a contract with the landlord and paid the rent.

The sundries in the house have been moved out, but the sanitation has not been done yet, and the weeds in the yard have not been pulled out. I have told the landlord that I need to clean it up because I will be using this house every day.

The landlord said it would be done this afternoon and there would be no delay.

After hearing what the landlord said, Wang Jiankun left with peace of mind.

When he rode back to the recycling station, he found that only Ye Wei was there. He said, "Boss, your two classmates just returned to school. I told you when I saw you coming back here."

"Okay, I'm going to school too, you stay here and watch over me."

After saying that, he rode his bike to school.

In the afternoon, Wang Jiankun re-drew the blueprint of his radio station. The appearance and basic internal structure were based on the radio station of the squad leader's brother, but the functions were much more powerful. His own antenna system could receive signals after multiple reflections from the ionosphere, and the modulation and demodulation system was more sensitive.

The transmission power will also be much greater, which should allow American hams on the other side of the world to receive the signal.

After evening self-study, Wang Jiankun started welding as soon as he returned to the scrap recycling station.

The PCB board was effortlessly combined into two pieces using super powers, and then the components were soldered on one by one in sequence.

Occasionally, the soldering was not in place or the original component was damaged, and I used my super powers to repair it and re-solder it. By around midnight, the circuit board was soldered.

Fix the circuit board in the protective shell, and then install the power supply components, cooling and dustproof components into the synthesized shell one by one.

Close the outer shell and secure it, then install the external interfaces and switch knobs one by one.

It was already very late, and it was not a good place to experiment. It would be very troublesome to install and then dismantle the antenna.

I'd better wait until tomorrow to go to the newly rented house and install the antenna there before testing it.
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During the morning self-study on September 9, Wang Jiankun's deskmate Yu Zirun told him a good news. Her father had already helped to talk to the leader of the Post and Telecommunications Bureau and asked him to go to the Post and Telecommunications Bureau to see the leader tomorrow at noon. The leader would personally help with the application process.

"Great, thank you very much, I owe you one first, and I will definitely repay you in the future."

"You're welcome. Just take me to play the radio station then!"

Now that the license application has been approved, we can start installing the radio station.

Wang Jiankun was a little absent-minded during the morning class, thinking about installing the radio as soon as possible.

It was not until noon that Wang Jiankun did not eat with the squad leader and others. He hurriedly found a cart to move the desk, radio and antenna to the newly rented house in Yuyu Garden.

After moving the table into the room, which had already been cleaned, Wang Jiankun used his superpowers to clean away some hidden dust and repair some leaks.

I put the radio on the table first, found a road to the hill behind the house, and after checking the line, I started installing the antenna.

The cable connecting the antenna was made by Wang Jiankun using his superpowers. It uses very thick copper as the core. The structure of the antenna is the most advanced in the world, and the material of the antenna is also extremely pure, in order to reduce the background noise of each device.

When I went down the mountain, I checked the line again. There should be few people coming here, so I hung the line on the tree first.

He wanted to debug it immediately, but it was almost time for afternoon classes, so Wang Jiankun had to go back to school to attend classes first.

The monitor gave him a radio magazine before class.

"This is what my brother asked me to bring to you. He has been busy with many tasks recently and has no time. You can read this magazine first to learn some knowledge about radio stations. I will take you to talk to my brother after he is done with this period of busyness."

"Okay, thank your brother for me. I'll read some magazines and teach myself."

After the evening self-study get out of class, Wang Jiankun rode his 28-meter-long bicycle and rushed to the newly rented house at lightning speed.

After arriving, he checked the lines and the radio station and found nothing abnormal. The voltage should be relatively stable at this time. Wang Jiankun connected the power supply, turned on the switch, and started searching within 7.0~7.01MHZ.

According to information learned from radio magazines, this frequency band is a special frequency band reserved by the International Telecommunication Union for "hams".

"Ham" people from all over the world are crowded in this frequency band, so when Wang Jiankun puts on headphones, a sound comes out every time the frequency jumps by 0.00.

Chinese, English, Japanese, Russian and Arabic kept switching. Wang Jiankun knew that this was because his antenna was too sensitive. Almost every sound from the ham could be clearly received as long as the channel was right.

So he began to use his superpowers to fine-tune the channels and record them on paper with a pen, mainly recording the call signs and frequency bands of the United States, Britain, Hong Kong and Macau.

Once your license is issued, you can contact these target radio stations.

At this time, the night sky was filled with a bright moon and everything was quiet, but the sound in the headphones was very lively.

The sound of CQ CQ continues, this is the ham calling like-minded friends from afar.

Wang Jiankun is not particularly concerned about call signs used for purely casual conversations, but he highlights those call signs used to discuss radio, computers, semiconductors, etc. Wang Jiankun notes them so that if they can chat together in the future, his knowledge base and sources of knowledge will be guaranteed.

It was not until the early hours of the next morning that Wang Jiankun turned off the radio, cut off the power, and fell asleep leaning against the desk.

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(End of this chapter)