Chapter 180: Finishing the Handheld Components
Using the resources of the Physics Department, the radio has been made. I haven’t thought about which department to hand it over to. The key is that the cost is too high. It uses nine transistors and one diode.
There are more than 40 other resistors, capacitors, inductors and other components. The cost alone is more than 160. It is enough to replace a bicycle. This price cannot be promoted.
The sound quality is good, it can be driven by ordinary batteries, and the size is quite suitable. The casing is also processed by myself in the factory of the Department of Physics. I really learned this craftsmanship in vain, and I make all kinds of small accessories myself. Made.
The pass rate of transistors at this time is too low, resulting in extremely high costs. Zhu Xuefeng has some ideas to improve the pass rate, but there is no channel. Besides, who would believe the advice of a first-year freshman majoring in metal physics? of.
With Uncle Kong’s letter of introduction, I made two trips to the Jingcheng Electronic Tube Factory (the predecessor of BOE) in Jiuxianqiao. The current electronic tube factory has an annual output of one million diodes and 30,000 triodes. Currently, the entire The largest transistor manufacturing plant in the East.
After picking and choosing among countless products with substandard parameters, I also collected a dozen of the missing three transistors. It was a matter of luck, and I also bought the others. The materials for the walkie-talkie With good luck, I finally got four sets.
The current products of this factory are for military use and HT and HK. If it weren’t for Uncle Kong’s letter of introduction, we wouldn’t even be able to get in. In the end, they didn’t even confiscate the money for the tubes they selected from the scraps. It was said that it had already gone through the scrapping process and it would be illegal to collect money anymore, but it saved Zhu Xuefeng a lot.
"Uncle Zhang, please help me keep the ones with this kind of parameters next time. It won't be long before there will be demand."
Uncle Zhang accompanied Zhu Xuefeng to make the selection. As the technical person in charge, Zhu Xuefeng would not have been able to complete the parameter testing of so many tubes without him organizing people to help.
"Okay, I'll keep them all for you. If you can really use them, it's better than scrapping them. This transistor is much more expensive than electron tubes. It would be a pity to scrap them."
"If you really want to use it, these parameters are still a bit off. Let's talk about it then. It will be a matter of time for this transistor to replace the electron tube. You, just wait and get busy. Uncle Zhang, I'm leaving. Really Thank you so much.”
The production of electronic tubes in the electronic tube factory has not stopped, and it still accounts for the majority of the factory’s production tasks.
With the various equipment and resources of the Physics Department, it is not a big problem to make it, but the batteries used for the walkie-talkies cannot be obtained.
The battery required for the transmitting unit has high requirements for volume, voltage, and power. There is no such battery in China now. This is directly related to signal transmission and cannot be replaced at all. If the power supply is used instead, this mobile phone will not be able to use it. Meaning, it became a radio station.
Zhu Xuefeng processed the copper-clad laminate into a single-sided printed board. He simply assembled it first and debugged it in the laboratory. He experimented twice with the laboratory's DC power supply and then waited for the battery.
We have entrusted Section Chief Lu to help contact the chemical factory. It is estimated that there will be little hope for this thing for a while. The chemical factory has not even completed the upgrade of lead-acid batteries. This technology is more difficult, so we can only wait. On fire.
In the following days, Zhu Xuefeng spent his extracurricular time on campus either continuing to study ductile iron or studying Cantonese with Fang Jiaming.
The notice above states that in view of the difficulties in recent years and the decline in students' physical fitness, the school's twice-annual sports meets are canceled as well as the annual long-distance race around the city.
At noon on Saturday, squad leader Chen Jun came to the dormitory to inform.
"According to the education plan and the needs of rural farming, the first-year students of the Department of Physics will be assigned to Qinghe for a week of production work next Monday to participate in the autumn rice harvest."
"When the time comes, everyone will bring their personal supplies. After living in the village for a week, I have to notify other dormitories.”
The dormitory suddenly became lively. It has been more than a month since the school started. Most people have only left the school on the day of the parade. Now they can return to the countryside. They were all very excited.
Today is Saturday and next Monday is October 17th. I have to go and participate in military training when I come back. It will be the end of November or early December when I come back. Many things still need to be arranged. .
“I’m good at harvesting rice. I do it twice a year. It’s really rare that there’s still rice in the north. What’s it like now?”
This is Chen Zhihe, from In the land of plenty, I guess there is no shortage of rice. "Have you not seen the Summer Palace? You can't understand why there is rice in the north. You, the life committee member, don't have enough common sense about life. Let's remove him."
How many people After chatting, it was found that Qu Zhipeng, Zhang Yong, Xu Dapeng, and Xue Shaohua had harvested rice. Only Zhou Jidong, Zhu Xuefeng, and Fang Jiaming had not had any contact with them.
…
Zhu Xuefeng and Xia Yuhong are on their way home. It seems that Foreign Languages and Literature has also received notice of production labor. Xia Yuhong is also very excited. They are also harvesting crops, but with the Department of Physics Not together.
Junior high school and high school students were organized to go to the countryside to work in the countryside, but they never got any rice. They usually helped weed and water in nearby villages. Other villagers did not dare to let their children do it. This would be terrible. The harvest is gone.
Xia Yuhong blinked her big eyes and said very seriously.
"Xue Feng, you won't accept it, right? Let's find someone to teach us, otherwise everyone will laugh."
Xia Yuhong is quite strong and doesn't want to show off in front of her classmates. Lu Yie unexpectedly wanted to learn to harvest rice.
“It’s very difficult to find someone to teach you how to harvest rice in a northern city, and you don’t have enough time. It only takes one day. Besides, if you go to the fields, the villagers will definitely teach you. Don’t worry, and be careful. Just cut yourself."
"You are just cutting yourself. Who could be as stupid as you and dare to say that I..."
…
"Brother Zhuzi, I have to ask you for help. I may be out from next week to early December and may not be able to take care of it.”
“Just tell me what it is and don’t bother me with it. . ”
Si Zhu leaned against the doorframe lazily, carelessly.
This is Silly Zhu's daily image. I have been reminded several times. It was only a few days after the last blind date that it changed back. Fortunately, after my sister went to college, she also knew that there should be some changes. At least her current clothes are A lot tidier.
“I am going to work in production next week and have to go to military training next month. I will definitely not be able to make sauerkraut in time. I will clean out the kimchi jar tomorrow. You have to help me pickle sauerkraut and Chinese cabbage for winter storage. You have to keep an eye on it for me.”
“Leave it to me no matter how big the problem is. I’ll make sure it’s salty and sour. You can cook it. I’ll pick it up too. We’ll do it together then. Done.”
“When the winter storage comes, the neighborhood office will organize it, so don’t worry about it. Just get it back and I’ll help clean it up.”
“Thank you, Zhuzi. Brother, let the two little guys give you a try when the time comes."
In the winter in the north, there are really not many vegetables, just radishes, cabbage, and some dried vegetables. Some families have some conditions, and they will prepare some eggplants, melons, potatoes, etc. in advance in the autumn. Chili peppers are not easy to store when stored.
You can start pickling sauerkraut in October. In early November, or at the latest in mid-November, there must be organized Chinese cabbage for winter storage. Each family has a quota. These are the main dishes in winter. .
It is a fact to organize students to harvest rice. This is the course arrangement and the location is real. There is no need to question the rice harvesting in the north.
(End of chapter)