Countercurrent 1982

Chapter 24 Fishbone Antenna
Duan Yun had clearly thought of a new way to make money.

Nowadays, TVs are definitely a luxury for most families, but with the increase of income, there will obviously be more and more users of TV sets.

Generally speaking, it is not easy for a newly bought TV to fail within a year or two, and Duan Yun will definitely not be able to receive many orders for TV repairs.

However, since these TVs still use the kind of rod antennas that come with them, the ability to receive signals is definitely not high, and many users can only receive one central one, which can not be said to be helpless.

And if Duan Yun can make an outdoor antenna with high receiving sensitivity, it can undoubtedly solve this problem, and the antenna business is definitely a very profitable business.

In fact, in the mid-to-late 80s, the popularity of outdoor TV antennas was astonishing. In many urban and rural residential areas, you can see TV antennas on the roofs densely covered like bamboo forests. The scene is impressive.

In addition, in Duan Yun's childhood memories in his previous life, the black and white TV at home also had a TV antenna made of angle iron and aluminum wire. Whenever the TV signal was not good, Duan Yun would open the window and turn the antenna pole.

At that time, what impressed Duan Yun deeply was that the antenna of their house only had good signal if it was placed in the middle of the courtyard near the kitchen, and the TV picture would not be clear in other places.

In addition, the windy days became the most feared days for Duan Yun at that time. Because of the wind, the antenna had to be blown and the TV signal had to be found again.

After the windy day, the first thing Duan Yun did when he woke up was to turn on the TV, watch the TV screen with his mother, and turn the antenna in the courtyard to find the signal.

"Okay." As soon as she heard that she didn't want money, the middle-aged woman agreed happily and said, "My family and I work in the morning this month and stay at home in the evening. You can just come directly."

"Thank you, Auntie!" Duan Yun immediately smiled when he heard the words, and thanked him repeatedly.

Duan Yun didn't have a TV at hand, so the reason why he was willing to give it to his family for free was because he wanted to use his TV as a test.

In addition, the living area of ​​this piece is the richest group of people in the factory. Nine times out of ten, this old lady will show off the benefits. This is undoubtedly helping Duan Yun to promote it, so no matter what, Duan Yun will not will lose.

Afterwards, Duan Yun packed up the tools he brought, said hello, and left the family.

Walking on the road, Duan Yun was still quite excited, not because of the 15 yuan he just earned.

Doing business pays attention to preconceived ideas. If Duan Yun's reputation for electrical repairs is spread out in the factory area, it will be very difficult for latecomers to grab his business.

This is especially true for the business of installing antennas. Now the factory area and the entire Daxing TV have begun to popularize in the future. If Duan Yun can make some reputation at this time, then he can definitely make a lot of money!

As for how many 'peers' will emerge to compete or imitate his antenna, Duan Yun is actually not too worried.

No matter how strong he is, he can't eat all the cakes alone, and with Duan Yun's electronic technology, others are destined to be only 'green leaves' to set off his technology.

In the memory of Duan Yun's previous life, in the 90s and [-]s, most of the antennas used by people came from hardware stores in urban and rural areas, and some units also had 'capable people' who could make TV antennas.

However, the technical content of these antennas is not high, and they are all made by imitating the 'Yagi antenna' transmitted from the south.

The finished Yagi antenna is an end-fire antenna composed of an active vibrator (generally a folded vibrator), a passive reflector and several passive directors arranged in parallel.

In the 20s, Yagi Shuji and Uda Tailang of RB Tohoku University invented this kind of antenna, which is called "Yagi Uda Antenna", or "Yagi Antenna" for short.

This antenna has good directivity and higher gain than dipole antennas.It is particularly effective for direction finding and long-distance communication.If it is equipped with an elevation and azimuth rotation control device, it can communicate with radio stations in all directions, including space vehicles, at will. This kind of feeling cannot be obtained from an upright antenna.

In addition, in the early 80s, an outdoor antenna called 'fishbone antenna' was very popular in the south.

The fishbone antenna is an antenna that receives UHF band TV signals. Because its shape is a bit like a fishbone, it is also called a fishbone antenna. In fact, the fishbone antenna is a common name for a high-gain Yagi antenna.

Since satellite TV and cable TV were not yet popular at that time, in order to receive more TV channels, many places in the south, especially the Pearl River Delta area of ​​Guangzhou, used fishbone antennas to receive the 'Jade' and 'Pearl' stations in Hong Kong. At that time, the silver screen Wearing beautiful clothes, fresh food, comments criticizing the Governor of Hong Kong, self-selling and boasting advertisements, wanton kissing of lovers... The living Hong Kong was suddenly pulled into front of my eyes.The colorful programs made people set up "fishbone antennas" in front of and behind the house.

In 1980, the "Yangcheng Evening News" published an article "Hong Kong TV" and others, calling Hong Kong TV a "cancer of the mind" and advocating the removal of the "fishbone antenna".

Theorists are debating the pros and cons of Hong Kong TV.At that time, there were many "fishbone antennas" in urban and rural areas of Guangdong. In order to deal with the "invasion" of Hong Kong TV, many places dispatched fire trucks to work at high altitudes and forcibly removed the "fishbone antennas".

Until 1992, the programs of the four channels of the two TVBs in Hong Kong were included in the newly established Guangdong and Guangzhou TV networks, and the local cable TV stations used technical means to "filter" politically sensitive content.Since then, the "fishbone antenna" has slowly disappeared.

It can be seen that this antenna is an excellent product that can affect an era, but at present, it is difficult to find traces of it in northern cities in China.

This is undoubtedly a huge business opportunity for Duan Yun!

Duan Yun had come into contact with this kind of antenna when he started taking electronic courses in the university in his early years. Under the guidance of the lecturer, Duan Yun and his classmates also optimized and improved this kind of antenna, and the sensitivity was greatly improved. , in today's era, it is definitely a 'black technology' existence!
The only thing that worries Duan Yun is that some of the electronic components he used to improve this antenna may not be available on the market today. If they are not available, then Duan Yun can only use existing parts for redesign and improvement. .

After returning home, Duan Yun first had dinner with his mother and sister, then found a bench and sat beside his bed, using a pencil to sketch on the workbook that his sister used up...

(End of this chapter)