Chapter 13 Ham Family

"Sasha... First of all, let me tell you what amateur radio is..."

The beautiful sound of VBB keeps coming from the speaker, and another brand-new world is displayed in front of Lin Hong.

It turns out that radio stations in the air are also divided into different types. According to different wavelengths, they are divided into multiple frequency ranges. There are unified regulations in the world that only allow trillions to be used for what to do.

For example, those large radio stations have their own fixed frequencies, and others are not allowed to seize their frequencies.

And there is such a small group of people in the world. They love radio technology very much and do not set up their own radio stations solely for profit. Such people are called amateur radio enthusiasts and are called "ham people" in China, because this is based on the English HAM literal. The meaning is translated.

As for why it is called "HAM", there is another unknown allusion. To put it simply, this word comes from the call of an amateur radio community at Harvard University in the United States.

The management of "ham people" in various countries is very strict. Individuals are not allowed to set up radio stations to receive or send signals without permission. They must apply for the corresponding amateur radio license according to the specified process. After obtaining the world's only call sign, they are allowed to go online and communicate with other "hams".

Because the frequency band is a limited resource and is used by people all over the world, the use of the frequency band has been divided very accurately. Due to the huge contribution of the "ham clan" to the promotion of radio technology, the international special frequency band is specially reserved for the "ham clan".

As Lin Hong operated before, from 7 megahertz to 7:30 megahertz, this frequency band is one of the entry frequency bands for beginners. "hams" all over the world are crowded on this narrow frequency band, so it is also the most crowded and lively frequency band.

The call sign is the unique identification of "ham" mutual recognition. Just like the name, with this, we can distinguish each other.

The call sign is not named at will. There are too many hams in the world. If they all have one name, it will inevitably cause great chaos, which was proved when the radio was just developed.

Therefore, later, the International Telecommunication Union uniformly regulated the call sign of local radio stations, which contained important information such as the country, the operating level of the radio station, and the location of the radio station. Only the last few letters are personal nicknames.

Moreover, after so many years of development, the connection between hams has formed a set of conventional call etiquette and call terms, such as the beginning of CQ, which means that you are calling; and when calling others, you should first report your call sign... and so on.

Lin Hong and VBB talked until nearly three o'clock in the morning, and the other party was explaining, and Lin Hong was listening and asking questions.

"Shasha... Ah Huang... I have to participate in the school's math exam competition tomorrow. If I don't sleep, I can't get up in the morning. That's all for today... Ah ha~~ In addition, I suggest you read more amateur radio magazines, which usually have instructions... Let's talk about it today..."

VBB has been yawning repeatedly. After the two sides said goodbye to each other, she went offline.

Although Lin Hong is a little reluctant, there is nothing she can do. After all, VBB is not like herself. She doesn't have to sleep day or night. It's rare for her to talk so late today.

Today, he opened his eyes again. He didn't expect that there was so much attention in the small radio. Fortunately, he met VBB today, otherwise he didn't know how many jokes he would make.

Finally, VBB let himself read more amateur radio magazines, which reminded Lin Hong of another room of Lao Xu. He remembered that there were several large boxes in it, which were full of books and newspapers.

Lin Hong hurried to the workbench to pick up the flashlight, and then ran to another room. The rooms were not locked, and most of the things inside were some debris. Lin Hong walked around a few large wooden boxes and came to the innermost one.

"That's it."

In front of him were three huge cardboard boxes stacked together. Lin Hong remembers that the last time Lao Xutou found the China Radio magazine from here.

Open the box. The box is full of all kinds of magazines. Lin Hong casually pulled out a copy with "Electronic World" written on it, and a large transistor printed on the cover.

He put it back and took out a new one, and the result was Radio and Television.

It's really inconvenient to extract randomly like this. So, Lin Hong started from the side and took out these magazines one by one. After taking five or six books in a row, he finally saw a copy of Amateur Radio. He put this book aside, then continued to clean it up, and finally cleaned up the whole box, and found a total of more than 20 magazines and books related to "amateur radio".

The magazines in his box recovered, and then took these magazines back to Lao Xu's room, turned on the lights on the workbench, and began to read at a very fast speed.

He looked at the wall clock. It's almost four o'clock now. He doesn't have much time left. He wants to finish reading all these magazines before dawn.

Under his intention to speed up, he only heard the sound of brushing the book for a moment. Except for a few articles about production, most of the content is relatively elementary, and many of them are knowledge of literacy and popularization, so Lin Hong reads it quickly.

By the time when it was just dawn in the morning, he had basically finished reading more than 20 magazines.

He moved his sore neck and put the magazines back in place.

After these hours of emergency raids, he really had a more detailed understanding of "amateur radio". Whether it is the history of the "ham clan" or some basic common sense concepts, he has a corresponding memory in his mind.

People have an inexplicable fear of the unknown, so Lin Hong was instinctively worried about the knobs and strange letters on the radio before, for fear that he would damage the things if he accidentally moved.

Now, he can understand most of the logos on the panel, and he has a general understanding of the function of many knobs on it. Then he suddenly understood that this thing is just like that. In fact, it is only a little more complicated than those radios.

His mind was a little noisy at this moment, so he got up and opened the door and came to the yard. Then he began to stand in the yard.

This is what his master explained before. These three-body styles have to stand every day, especially when it is just dawn.

Calm down, slightly closed his eyes, and looked ahead. Lin Hong emptied all the confused thoughts in his mind, and constantly adjusted his posture according to the three-body points, and finally reached a state that made him most comfortable.

The sun slowly rose from the east, and the sun shone on the teenager in the middle of the yard. Between his eyebrows, there was a look of confidence shining.

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Xiaoqiang rushed to the list after 12 o'clock on the 22nd, that is, Sunday night. If you haven't slept at that time, please vote for Xiaoqiang. Thank you~