In the final analysis, good things are still easier to accept.

Qin Fanghao went out with resentment, but he succeeded, Deng Ruonan promised to help everyone in class, explain the knowledge of radio and telegraph, and make it easier for everyone to get started.

This news kills two birds with one stone, Fang Chunlei can take the opportunity to observe the three female students on the one hand, and learn new knowledge on the other hand.

It's just that the development of this matter exceeded his expectations, originally thought it was a learning exchange between the two dormitories, but who knew that it eventually developed into a full staff extra class.

The other students, when they heard that Deng Ruonan was going to give Fang Chunlei and others a lesson, naturally asked to study together, and no one wanted to be left behind.

One sheep is put, and two sheep are also put, Deng Ruonan naturally won't refuse.

So in the first class in the evening, the classroom was full, and there were no less than ten students.

Everyone thinks it's nothing, just study together, only Fang Chunlei looked at it, with a sad face, what is the difference between this and the usual class?

The only difference is that Deng Ruonan did not sit below, but stood on it.

Deng Ruonan is not a twisted character, and she is not stage frightened when everyone comes, she clears her throat and prepares to speak.

Seeing that there was no good opportunity to exchange observations now, Fang Chunlei calmed down and learned knowledge first.

Deng Ruonan spoke patiently, from Morse code to the history of wireless telegraphy, as well as examples of military applications in previous world wars.

I have to say that Deng Ruonan has the potential to give lectures, which is easy to understand and not boring.

"When taking a telegram, the electric key turns the circuit on or off, and the information is delivered in the form of 'dot' and 'stroke' code."

"It takes 0.1 seconds to send a 'point' and 0.3 seconds to send a 'stroke'."

"The short signal 'point' reads 'drop', and the long signal 'stroke' reads 'click', so when the report is transmitted, it is always accompanied by a ticking sound.

Deng Ruonan's words, Fang Chunlei was listening carefully, and what was written on the black plate was also written down by heart.

"Ruonan, look at the Morse code you wrote on the blackboard, it can only be used to send letters and Arabic numerals, so how do we use it?" Zhou Mei was the first to ask questions.

Without waiting for Deng Ruonan to answer, another student said, "I know this, four-character code." ”

Deng Ruonan nodded and said: "That's right, according to the published 'Ming Code Telegram Book', the telegraph office uses four-character code to send telegrams. ”

"For example, people (0086), on (0006), things (0057), through the four-character code, we can complete the report." Deng Ruonan came as soon as she opened her mouth, it seems that she is also familiar with this code.

"But in battle, the clear code cannot be used to send messages, because the radio is transmitted in the air, there are no national borders and geographical restrictions, and there is no limit to the recipients, as long as you have a radio receiver, you can accept radio waves in the air."

"Therefore, encrypted messages are crucial in military warfare, and of course, cracking encrypted messages is equally important."

Deng Ruonan is in the field he is good at, and the more he talks, the more he enters the state, and everyone is fascinated by it.

This is a brand new, untouched field, and every knowledge point allows you to ponder it repeatedly for a long time.

Deng Ruonan said unsatisfactorily: "We can only talk on paper now, there is no telegraph, and we can't experience it in person." ”

When Fang Chunlei heard this, he was also a little regretful, he didn't know what it was like to use that thing.

Regarding the aspect of cracking encrypted messages, Deng Ruonan did not explain much, she was actually just getting started, just sending and receiving telegrams, and cracking the code was still learning.

Lin Shanyue told her that after the expert came over, she asked her and the expert to ask her about deciphering the cipher code.

At the beginning, Fang Chunlei was still worried that everyone was coming to class, and he had no way to observe the three female students.

Just listening to Deng Ruonan's talk about the back, all his thoughts were attracted, and the things he observed were left behind.

Lin Shanyue and Zhao Hong glanced outside the door, did not disturb everyone, and left silently.

"This thing was started by Leizi, right?" Zhao Hong felt that apart from Fang Chunlei, who could know that Deng Ruonan had work experience in this area.

"This kid has some ideas, and wants to use Qin Fanghao and Qian Liang to cover up and observe the three female students including Deng Ruonan at the same time." Lin Shanyue said.

"It's just that now it seems that the effect is not good, everyone's enthusiasm for learning has been mobilized, there are many people in the classroom, there is no difference from the usual class, Lei Zi wants to observe, there is nothing to do." Zhao Hong felt a pity for Fang Chunlei.

The plan can't keep up with the changes, and you can't stop everyone's enthusiasm for learning.

Lin Shanyue said with a smile: "Look at him, did you have a little bit of observation just now, I was fascinated by it." ”

"It's a good thing, I know I can't observe, study hard."

"You can speak for him."

"Isn't it?" Zhao Hong asked rhetorically.

Everyone's enthusiasm for learning, Lin Shanyue and Zhao Hong, is naturally supportive. As for how Fang Chunlei continued to observe the following, they would not interfere, so as not to startle the snake.

pestered Deng Ruonan and talked for a long time, she promised to continue tomorrow, and then everyone dispersed after class.

Back in the dormitory, Qin Fanghao said: "This Deng Ruonan has strong professional ability, and he should be a good hand in telegraphy." ”

"No wonder I can come and learn." Qian Liang also agreed.

Hearing Qin Fanghao's words, Fang Chunlei's eyes lit up and asked, "Can you see where you are studying?" ”

There are a lot of people today, and I am fascinated by what I hear, so I don't have time to observe, but Qin Fanghao may have discovered something here?

"I feel like a clerk working in the telegraph office of the communications building, otherwise Ming Ma wouldn't remember to be so proficient, and he would have come with his mouth open." Qin Fang was fortunate to be in a big city and had seen the staff in the communication building, so he made this inference.

Fang Chunlei hadn't seen it at all, so naturally he couldn't observe it, but the news he inquired about was his own news, wasn't it?

So he continued to ask: "Deng Ruonan is young, but he seems to have a lot of work experience. ”

"It should come out of a vocational college, just cultivate talents in this area, study in a targeted manner, graduate quickly, and be assigned to be a staff early." Qin Fanghao has a better understanding of the situation in this regard.

"If you can enter such a school and come out and be assigned early, the family should have a relationship." Qian Liang also said.

"Eight or nine are not far from ten, but the rich lady is too lazy to study and suffer from this, eating, drinking, and having fun, and making friends is their norm. Thinking that Deng Ruonan's family will not be too powerful, it can only be said that it is average. ”

Qin Fanghao said it in general, and it was natural to say it, and Fang Chunlei could also see that among these students, Qin Fanghao's family should be the most powerful one.

Qian Liang continued: "However, Deng Ruo's male personality is very good, he is very arrogant, and he is also serious in class. ”

"What, have a good feeling?" Qin Fanghao asked jokingly.

Qian Liang countered and said: "With you, I don't have a chance." ”

"You and Lei Zi have learned, and you will choke to death in half a sentence." Qin Fanghao said.

"What do you say about yours?" Qin Fanghao and Qian Liang were recording and sorting out, and Deng Ruonan's inference was suddenly pointed, and Fang Chunlei was still a little caught off guard.