♂?，，

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

  The sound of VBB came out from the speaker continuously, and a new world unfolded before Lin Hong's eyes.

  It turns out that radio waves in the air are also divided into different types, according to different wavelengths, and are divided into many frequency ranges. There is a uniform standard in the world, from several hundred megahertz to several hundred megahertz, only allowed for certain uses.

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

  There is a small group of people in the world who are very enthusiastic about wireless technology and do not make a profit, but set up their own radio stations based on personal interest. Such people are called amateur radio enthusiasts, and are uniformly referred to as "ham" in China, because this is a translation from the English word ham.

  As for why it's called "hacking", there is another unknown story behind this, which is long to tell. In short, the term originated from an amateur radio club at Harvard University in the United States.

  Each country has strict regulations on the management of "ham radio", and individuals are not allowed to set up their own radio stations to receive or send signals privately. They must apply for an amateur radio license through a specified process, obtain a unique call sign recognized worldwide, and only then are they allowed to go online and communicate with other "hams".

  Because the frequency band is a limited resource, people all over the world are using it, so the utilization of the frequency band has been divided very precisely. Due to the great contribution of "ham" to the promotion of wireless technology, internationally, a special frequency band has been reserved for use by "hams".

  Just like what Lin Hong operated before, the 7.0 to 7.1 MHz band is one of the entry-level bands for beginners, and "hams" from all over the world are crowded on this narrow band, so it's also the most crowded and lively band.

  The call sign is the only identifier for mutual identification of "ham", just like a name, with this, everyone can distinguish each other.

  Call signs are not arbitrary names, there are too many hams in the world, if each one takes a name, it will inevitably cause great confusion, this point was proven when radio was first developed.

  Therefore, the International Telecommunication Union later unified the call signs for radio stations around the world. The short call sign contains important information such as the country, operating level of the station, and the region where the station is located. Only the last few letters are personal nicknames or codes.

  And after so many years of development, the communication between hams has formed a set of conventional communication etiquette and terminology, such as starting with CQ to indicate calling; when calling others, one should first report their own call sign... etc.

  Lin Hong and VBB chatted until nearly 3 am, with the other party explaining and Lin Hong listening and asking questions.

  "Shasha... Ahuang... I still have to participate in the school's math competition tomorrow, if I don't sleep now I won't be able to get up early... let's chat here for today... ahho~~ By the way, these basic knowledge, it is recommended to take a look at amateur radio magazines, there are usually explanations inside... let's chat here for today..."

  VBB had already yawned repeatedly, after both sides bid each other farewell, she went offline.

  Lin Hong was a bit reluctant, but there was no way around it. After all, VBB wasn't like him, not needing to sleep day or night. It was already rare for her to be chatting with him this late.

  Today he once again opened his eyes wide, never thought that in the small radio waves, there are so many subtleties, fortunately he met vbb today, otherwise he still doesn't know how many jokes he would have made.

  Finally, VBB let himself look at more amateur radio magazines, which reminded Lin Hong of another room in Old Xu's house. He remembered that there were several large boxes inside, filled with books and newspapers.

  Lin Hong hurried to the workbench and picked up the flashlight, then ran to another room. The door was not locked, and most of the things inside were miscellaneous items. Lin Hong bypassed several large wooden crates and arrived at the innermost part.

  "It's here."

  What was spread out before his eyes were three huge cartons, stacked together. Lin Hong remembered that last time Old Xu had found that issue of "China Wireless" magazine from here.

  He opened the box and found it was full of various magazines. Lin Hong casually pulled out one, on which was written "Electronic World", with a large transistor printed on the cover.

  He put it back and took out another one, which turned out to be "Wireless and Television".

  It's really inconvenient to take them out randomly. So, Lin Hong started from the side, taking out these magazines one by one. After taking out five or six, he finally saw a copy of "Amateur Radio". He put this aside and continued cleaning up, eventually clearing the entire box and finding more than 20 magazines and books related to amateur radio.

  He put the magazines back in the box, then took them back to Old Xu's room, turned on the desk lamp and started working at an extremely fast pace.

  He glanced at the wall clock and it was almost four o'clock. He didn't have much time left, he had to try to finish reading all these magazines before dawn.

  Under his deliberate acceleration, for a while, only the sound of brushing through books could be heard. Except for a few articles related to production, most of the content was relatively elementary, and many were popular science knowledge, so Lin Hong read very quickly.

  By the time it was just getting light in the early morning, he had basically finished reading more than 20 magazines.

  He exercised his slightly sore neck and put these magazines back in their original place.

  After several hours of intense cramming, he finally had a more detailed understanding of "amateur radio". Whether it was the history of "ham" or some basic common sense concepts, they all had corresponding memories in his mind.

  People always have an inexplicable fear of the unknown, so before Lin Hong looked at those knobs and strange letters on the wireless radio, he instinctively felt a kind of worry in his heart, afraid that if he accidentally touched something, he would break it.

  Now, he can understand most of the signs on the panel, and has a general understanding of the function of many knobs. He suddenly realized that this thing is nothing more than that, actually it's just slightly more complicated than those radios.

  His mind was a bit restless at the moment, so he got up and opened the door to come into the yard. Then he started doing three-body stance in the yard.

  This was what his master had previously instructed him in. These three postures must be practiced every day, especially at dawn when the effect is best.

  Concentrating his mind and calming his energy, Lin Hong slightly closed his eyes, gazing into the distance, clearing out some of the chaotic thoughts in his mind, adjusting his posture according to the Three-Body style's key points, until he reached a state that made him feel most comfortable.

  The sun slowly rose from the east, and the sunlight shone on the young man in the center of the courtyard. His eyebrows and eyes sparkled with a confident spirit.

  ====

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