Chapter 12 Lively Frequency Band

Radio waves, or electromagnetic waves, have two important parameters, namely, wavelength and frequency. The wavelength and frequency are inversely proportional, so the higher the frequency, the shorter the wavelength, which is called the short wave; the lower the frequency, the longer the wavelength, which is the long wave.

The frequency of an electromagnetic wave is the number of periodic changes of the magnetic field or electric field per second. Its unit is Hertz, which is represented by the English letter HZ. In wireless communication, because the frequency value is generally very high, there is usually a letter M in front of HZ, for example, 5MHZ means 5 MHz of radio waves.

By trying to recall the memory fragments of that day, Lin Hong finally remembered that when he had a real-time wireless conversation with others before, the display screen of the radio showed a frequency of about seven megahertz, and the frequency range of the channel he had just searched was basically lower than six megahertz.

That's why he can't find private radio stations.

This time, Lin Hong made adjustments and directly began to search from seven MHz.

Sure enough, all kinds of noisy sounds soon came from the speaker. Sometimes the background noise was so heavy that I couldn't hear what the other party was talking about, but sometimes, several voices overlapped together, and I could only hear a lot of noise, and I couldn't hear a word clearly.

And more often, the sound of "Didi Dudu" is broadcast in the speaker. Lin Hong knows that this is a signal called Morse code, which sends a long and short signal through electric keys, indicating different English letters. This is what Lin Hong saw in the magazine. As for the specific details, he has not seen the relevant content.

"Sure enough!"

Lin Hong excitedly clenched his right hand and put his fist on his chest and made a gesture of victory. This step seems simple, but it takes him a lot of trouble. If it weren't for his good memory, he couldn't find the reason at all.

After being happy, Lin Hong began to slowly fine-tune the channel, filtered the noise and some unrelated channels, and carefully listened to the relatively clear voice signals floating in the air.

"CQ, CQ, this is BA1DC calling CQ and waiting for the answer... Shasha..."

"Shasha...CQ, CQ, I'm BG6KAE, bored, if you want to chat, please contact, OVER..."

"Shasha...BR6ID, your signal is 59, I can hear it very clearly here..."

"This is BA3AB, request insertion, request insertion..."

......

Although it is midnight at this moment, this frequency band in the air is very lively, and the calls of countless people are full of it, which makes Lin Hong feel that he is in the vegetable market.

However, at this moment, Lin Hong's cerebral cortex is extremely excited. This experience makes him feel very magical. He seems to have found a new continent and a brand-new world. He never thought that in the originally quiet night, so many people chose not to sleep, but kept sending their voices to the sky, hoping to get in touch with people thousands of miles away.

Lin Hong noticed that each of them seems to have their own specific code name, and these codes have the same coding rules, mainly composed of letters and numbers.

Moreover, Lin Hong can only understand a lot of what they said. Although he understands the words, he doesn't know what it means at all, because it contains many professional terms.

Although Lin Hong has made up a lot of knowledge about radio, he still found that he was still a rookie who knew nothing here.

After listening again for a long time and waiting for everyone's voices in the channel to become scarce, he finally decided to try to contact the outside world.

He picked up the microphone, pressed the talk button, and sent out his first radio wave today:

"CQ, CQ, I'm... I'm Huang, and I want to find someone to chat with..."

Although he doesn't know what CQ means, since everyone calls like this, he has learned the same. He didn't have his own code name and didn't want to reveal his name, so he suddenly borrowed Ah Huang's name.

After stopping for about two minutes, Lin Hong still didn't receive any other people's messages,

Lin Hong said again:

"CQ, CQ, I'm... I'm Huang, I want to find someone to chat with, is anyone there..."

This time, I finally got a reply.

"Shasha...Hello, I'm BG1VBB. It's a pleasure to connect with you, Huang... Hee hee... Your call sign is really interesting... Shasha..."

There is a girl's voice from the speaker. The other party is not very old to listen to the voice. Like Lin Hong, it belongs to the category of children.

After hearing the other party's answer, Lin Hong suddenly cheered up and showed surprise on his face.

In fact, due to the injury of his head when he was a child, his brain was not very useful when he was very young, and his legs and feet were not very flexible. In addition, when his mother was around when he was a child, Lin Hong gradually developed a too lonely and introverted personality. He was afraid of communicating with others, but in his Extremely eager to communicate with people.

So, since the last time he found that he could use the radio station to make calls without face-to-face, his heart could not calm down for a long time, precisely because he did not have to worry about the other party looking down on him because of his shortcomings. He will not feel nervous and afraid because the other party is standing in front of him. He can speak freely with the other party without restraint.

But he is still a child after all. If he communicates directly with adults, there are still some psychological obstacles. Just like last time, even if he has established contact with the other party, the dialogue between the two is not in an equal position. This kind of dialogue experience is very bad.

Now he is actually in touch with a girl who doesn't sound very old, which makes him overjoyed.

Lin Hong quickly replied, "CQ, CQ, I'm glad to meet you, too."

"Hee hee... Do you also use your adult's radio station? Why don't you even understand the basic knowledge? ...Shasha... Let me tell you, CQ is the abbreviation of Seekyou in English, which is only used when calling others to say hello. Now that we have connected, we don't need this~"

So it is...

Lin Hong's face suddenly turned red. He had just made a low-level mistake, so he apologized and said, "I'm sorry, I don't know anything about these."

"Sasha... Hee hee, it doesn't matter... I used to be like this... I secretly tell you that in fact, I don't have an amateur radio license. The call sign I'm using now is my brother's~~ hee hee... But he's asleep now, and I'm stealing his radio... If you think Call me VBB directly... Shasha... But if you call me on the channel, you'd better use a complete call sign. After all, that's the most basic etiquette... Shasha..."

Lin Hong listened carefully to every word the other party said. In the few short sentences of the other party, there was too much information, and his brain was quickly digesting the information contained in it. Although he could guess part of it through the other party's context, he decided that it would be better to ask the other party clearly.

"Hello, VBB, it's really nice to meet you. I want to ask you a few questions. I don't know if it's okay?"

"I know what you want to ask...shasha...say it, Huang...hee hee..."

Lin Hong's face turned red again. The title he gave himself before was casually taken in a hurry. Now he feels a little awkward to hear the other party call himself "A Huang".

"What is an amateur radio license? Also, the call sign you mentioned is the code name between us, right? Why is everyone's call sign composed of such similar letters?

"Hee hee... I knew you were going to ask this question... As soon as I heard your call sign, I knew you were a rookie... Shasha... That teacher will teach you a good lesson, so that you don't have to make such a joke in the future... Shasha..."

......

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