At half past seven in the morning, the radio monitoring station in Tanglin City.

Xiao Zhang, who had just graduated from school and was assigned, came to work early as a few weeks ago, and he took the key to open the security door of the monitoring room, and then opened the monitoring equipment with excitement. Today it was not his turn to be on duty, but Lao Du, who was in charge of taking his master. However, because he was very interested in these devices and enjoyed the process very much, and because he wanted to do something for Master and thank him for his careful teaching these days, he took over the duty of Master Lao Du on Saturday morning.

This is the case with young people, especially those who have just graduated from school and have been assigned to a new unit, who are full of energy and eager to work 24 hours a day.

Xiao Zhang finished eating the fritters and soy milk in his hand a few times, and then began to enter the working state.

He felt that he liked this job quite a lot, and he monitored the radio status of the entire Tanglin City every day, which gave him a feeling of holding everything in his hands. Moreover, sometimes, when they find something abnormal, they can also listen to the specified signal, which feels as if they are eavesdropping on someone else having a secret conversation, which is unusually exciting and fresh.

As the master usually taught, he turned on several monitoring devices and slowly monitored them in the order of wavelength from short to long.

In fact, their work is very leisurely, and there are only a few places where Tanglin City sends radio signals to the outside world every time, and he is a little familiar with it. For example, the stationmaster of the radio monitoring station has a radio station at home, and the son-in-law of the stationmaster has nothing to do. There are also several members of the city's amateur radio club. Oh, by the way, there is also a cow man, which was specially explained by the master, located in Xinfu Town, Tanglin City. Master said that no matter what the other party does, don't care about it, and don't listen to it, otherwise you might get into big trouble.

Maybe it's still early, and there are not a few signals at the moment, but there are intermittent signals coming from the direction of the stationmaster's home, listening to its content, it seems to be a CW signal. As for what the specific content is, Xiao Zhang is a little blind. Before his work, he had never learned Morse code, and although he had heard of it when he was in school, he had never really memorized it to use it.

His top priority every day is to learn Morse code, according to Master, if the staff of the monitoring station don't understand this, then how can they monitor?

"Huh?"

Xiao Zhang, who was listening responsibly, suddenly found that the signals in the frequency band began to increase for a while. He looked at the clock on the wall, and the hands were pointing exactly eight o'clock.

This seems to be a mysterious command, Xiao Zhang found that the frequency band suddenly became extremely lively, from extreme silence to extreme excitement in less than a minute, everyone seemed to be better, from eight o'clock to send a signal to the outside world.

"What's going on?" Xiao Zhang hurriedly picked up the headphones of other radio stations and listened to them, and found that it was the same on other bands. He panicked all of a sudden, he had never encountered such a situation, and his master had never told him about it.

"Is there some conspiracy in this?"

A thought suddenly flashed into Xiao Zhang's mind, since he became a monitoring station worker, he has been looking forward to the day when he can find a signal of an enemy and bring the other party to justice.

Thinking of this, his heart involuntarily pounded, he no longer hesitated, took off the headset and immediately ran towards the monitoring room, he was going to find the stationmaster's office and report this important situation to him!

However, he didn't run far just now, but he ran into his master Lao Du halfway.

Although his apprentice Xiao Zhang said that he would help him on duty today, Lao Du, who was strict in his work, still came over, Xiao Zhang was not very reliable after all, Lao Du let him stay alone, and he was a little relieved.

Lao Du saw Xiao Zhang running over with a panicked face, stopped him directly, and asked, "Xiao Zhang, what's wrong with you?" ”

"Master, are you here? That's great! Xiao Zhang's face showed a look of surprise, and he hurriedly said, "I found that there is an abnormal situation, and I want to report it to the stationmaster!" ”

Lao Du glanced at him suspiciously: "Abnormal situation? ”

"yes, I was just listening...... Hey, Master, come and listen to it yourself, I don't know what to say. After Xiao Zhang finished speaking, he turned around and ran to the monitoring room.

"This Xiao Zhang, things are still too rough." Lao Du shook his head leisurely and walked step by step behind him.

"Master, hurry up." Seeing this, Xiao Zhang said a little anxiously.

"Old man, my legs and feet are a little inflexible."

Lao Du gave him a cold humor, so he sat down on the chair slowly, picked up one of the headphones and listened.

Xiao Zhang watched from the side for a long time, and didn't see any clear meaning from the master's face.

"Master, what's the situation? Isn't this an abnormal signal? Is there any conspiracy (Mao)? "Xiao Zhang's hometown is a southern coastal city, and he already has some accents when he doesn't talk, but this time, in a hurry, he said the conspiracy again.

"**!" Lao Du scolded with a smile and continued, "This is those stinky boys participating in an amateur radio competition!" I said a long time ago that you should memorize Morse code, and you take my words as a deaf ear? ”

"I've got it on my back!" Xiao Zhang smiled curtly, he knew that he was putting an oolong again, and he was secretly glad that the master came in time, otherwise he would have cried if he stabbed this matter to the stationmaster.

"Master, what's the game you just talked about?"

"Today is the last weekend of November, and there is a major event...... "Lao Du will cqww_dx the competition to Xiao Zhang roughly, "these things are basically necessary to know, I will give you the basic internal information when I go back, and I will carefully read and familiarize yourself, so as to save yourself from making such low-level mistakes in the future." ”

"Thank you, Master! You've been so good to me, I don't even know how to thank you! ”

"Stinky boy, just don't get me in trouble." Lao Du smiled and shook his head, although this kid is a little reckless, but his mouth is quite sweet, he can be a man, and Lao Du is also willing to point more fingers at him.

"Master, I still have a question." Xiao Zhang hesitated for a moment, and seeing that the master was in a good mood, he finally mustered up the courage to speak, "What if someone takes advantage of this opportunity to fish in troubled waters and send illegal signals to the outside world?" Isn't it impossible for us to monitor it? ”

"You, don't give up yet." Lao Du couldn't laugh or cry a little, "Theoretically, this is possible, and it is difficult to monitor, but this probability is very low, and if there is, it will not be our Tanglin City, you, stop thinking nonsense." Go and turn on the three switches numbered 7, 8, and 9 in the second row on the panel. ”

"Oh." Xiao Zhang scratched his head, walked to the front of the control panel, and turned on the three switches according to Master's request. He asked curiously, "Master, these three switches seem to be switches for devices that release interference signals, right?" ”

"Yes." Lao Du nodded, "What you just said is not unreasonable, but in the face of this situation, there is nothing we can do." I can only add some ingredients to them, which means a little. He said with a proud look on his face.

Speaking of radio jamming equipment in Tanglin City, it has also won the provincial science and technology innovation award, although its symbolic significance is greater, but it has also won the provincial award, right? And he Lao Du is one of the co-developers of these equipment.

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