Paper tape perforation records appeared quite early. It was invented in the early 18th century and was mainly used in the textile industry.
The perforated command belt was used in telegraph typewriters in 1846. Then, based on this principle, a perforated card watchmaker was developed, which could store more information on the card.
Nowadays, it has been widely used abroad. For example, IBM's predecessor was a watchmaking company, which has been established for nearly half a century.
Based on the possible communication applications of perforated wire tape and paper tape machine, the two also improved the operation mode here, even more than their respective speculated ones.
Luo Yiqiao speculated that it was a little more complicated, and believed that the other party would use the characteristics of ore reception and standby all day long. Once the opposite person calls and contacts, it can be received at any time.
The same is true for sending information when it is turned on. The opposite side first sends it to contact time, and then waits for the response here. At the agreed time, it quickly starts the machine and uses the help of a paper tape machine to send a large amount of quick messages in a short time.
As for how to achieve it, it needs to be studied later. In their opinion, there is not much technical problem, so why have they not used it in reality? It's just that it's unnecessary and not worth it.
This will make the relevant work more complicated, the equipment requirements are higher, and the costs are the same. Reliability and other problems may also exist. Especially in the military, the army does not spend all day in the city buildings, and the complex battlefield environment.
Using paper tape is a joke.
Even in espionage work, it does not have much effect. Although this can quickly send a large amount of intelligence, the length, speed, etc. of the paper tape are also limited, and the information on it is not high, so the amount of intelligence is also limited.
At most, a regular length message is compressed and sent in a short time, but as long as the enemy understands the means you use, you can also use the corresponding means to receive it to monitor it, because this has not changed, and the radio waves are exposed after being sent.
This feature of
As long as this characteristic has not changed, the most correct development path for radio communication means is encoding, which means that it cannot prevent the other party from listening and receiving, and that will prevent it from deciphering the message, at least during this period.
In other words, as long as this method is detected, it can theoretically be regarded as invalid and will only be useful before others discover it. It is destined to be used within a very limited range. For example, the current intelligence department's listening and positioning capabilities have made great progress, so
Use this method to deal with it.
Of course, failure is only theoretically. The rapid completion of the sending of reports in a short period of time still brings great tests to the listening work. After all, due to the limitations of funds, equipment, and personnel, they cannot achieve real-time listening of the communication frequency band.
, can only be searched one by one, which will leave a gap.
Based on this, Luo Yiqiao also made a guess based on the characteristics of ore reception, that is, the other party may have counter-monitored their listening work through ore reception, and then used their search gap to send reports.
This also explains that there are more questions about the number and type of ore, and the other party has spent so much effort on the chimney to make antennas, which is obviously to cooperate with the ore reception, and it is a bit too far-fetched to say that it is a cover.
As for Yang Haicheng's speculation, it would be simple. The other party used the ready-made telephone line to receive dials, used the weak current that was difficult to sense by the telephone, and then used the perforated paper tape and corresponding equipment to send a report quickly.
The reason for his insistence on this is also very simple. It is not as complicated as Luo Yiqiao mentioned. He has to call, send an agreed time, and also listen to something. As long as the phone dials in and out, and then send an agreed contact number.
, you can contact immediately.
Moreover, there is no need for the other party to stay in front of the equipment all the time. The phone rings and checks it. Especially for emergency contacts outside the agreed communication, this is much more reliable.
In addition, Yang Haicheng also pointed out from the perspective of anti-espionage operations that the predecessor of this group of people was suspected to be just a field gang, and it may not be able to complete the complicated operations mentioned by Luo Yiqiao.
And based on these surveillance, there are no signs of long-term surveillance. Although it is impossible to see whether everyone is working from outside, if someone squats in front of the set-up period all day, he will inevitably need a black and white shift, regardless of this.
It is easier to detect when you have rest during the day or change shifts at night.
Finally, I have not forgotten to mention that the reliability of ore reception is not very good, especially long-distance communication, which is not effective unless a large amount of power is used to send reports, but if so, their listening work should be
The feedback was actually not the case.
After Yang Haicheng finished speaking, Luo Yiqiao couldn't help but refute, and could not agree with some of his views and opinions.
Like the personnel problem, it said that although the current intelligence shows that this is a team that is biased towards action, since there are so many equipment installed, there must be corresponding personnel to operate it.
As for the reliability of ore reception, it can be debugged and more precise and sensitive equipment can be used, such as those that use gold. However, Luo Yiqiao explained that some other problems were obviously a bit stubborn.
"Is it possible? Are there two possibilities?" Seeing that the two were about to quarrel again, the others looked like they were watching the show, Zheng Junshan finally spoke.
"…Well..." The two of them thought for a moment and nodded almost at the same time. Obviously, they also agreed with each other's views, at least part of them, but they just quarreled and deliberately fought.
"I think the existence of this group of people should include some experimental tasks. After all, there are too many Japanese spies in this place, which is somewhat inconsistent with common sense."
Hearing Yang Haicheng's words, Luo Yiqiao also nodded and added: "For example, wired communications can be used from Nanjing to Shanghai, but in other places, most of them do not have this condition.
However, this method is very secretive. In addition to large cities, you can also use communication radiation lines from large cities to nearby small and medium-sized cities to set up transit radio stations there to avoid the listening and detection methods we may arrange in large cities.
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This chapter is not finished yet, please click on the next page to continue reading the exciting content later! This should be more important to them, so, here, the layout of this aspect obviously hides it better and is more hidden. If you do it well, it is sufficient.
After preparing, it may indeed occur, and it will be difficult to detect after dialing the line.
As for using ore to receive signals, it may be a means they use to try to avoid us from listening and detecting. Its characteristics are not only that they can passively receive electrical signals, but also the problems mentioned by Lao Yang do.
Therefore, they should use the characteristics of ore to test the possibility of our listening work and trying to avoid it. This can be proved by the number and type of ore."
"…It is true..." Yang Haicheng then added that the two of them sang together in this way, combined with some analysis of both sides, roughly sorted out a charter.
Generally speaking, the purpose of the construction of this gang should not only be to carry out confidential information forwarding, but also to test their listening and detection methods.
"…Baoba…" After the two of them said, everyone present applauded. This speculation could be regarded as connecting almost all the clues found at the moment, which was very consistent with some of their ideas, even beyond that.
Those who play technology are relatively pure. With the rapid development of the telecommunications room, the recruitment of personnel is also expanding, forming two generations of youth and middle school. The two are representative figures in the new generation. With this performance, they also have light on their faces.
ah!
After discussing and communicating based on this, everyone quickly started working, but until the end, they found some, but they did not find too much.
The final judgment on the relevant case is not much different from Yang Haicheng and Luo Yiqiao's inference. I suspect that this group of people are not only responsible for forwarding the confidential situation, but also targeting them.
To be honest, because I was slow to do things, the things have been destroyed, and there was no actual gain, there was no password book, and there was no equipment that could get a piece of it. But it was nonsense to say that I had no gains.
The speculations made based on clues here are far more useful than the above. Even if the inference is incorrect, it is also a very valuable idea to them and will be of great benefit to their future related work.
...
Lin Mo received a message from Xu Guyu that Zheng Junshan, Xiao Rui and Du Mingsheng all ended the operation smoothly, and he was relieved to his stomach and focused on handling all matters of the case.
The case on his side is coming to an end, but the arrest work is still continuing, mainly based on the searched records and the confessions obtained. The people involved are still emerging, and the arrest can only continue.
Moreover, with the ongoing investigation, it is estimated that it will last for a while. If this case had not been widely affected, it would have been likely to be stopped and stopped later. It would have been bound to a certain range and would not allow them to continue digging, otherwise it would not have known how long it would have lasted.
.
However, the Death Warriors who had emerged before only found some traces of the other party's activities and did not meet again. The other party was afraid that they would no longer face them head-on.
As for what Lin Wenhua has paid attention to, the police also reported some situations, which are consistent with Lin Mo's guess. He did accept several murders today, and after reviewing the case, he felt that they were more suspicious.
This is only reported and accepted. No discovery, no report or accepted, and the number of cases will not be too small. After all, the other party has not taken action for a long time, and the police officers have been called by them. We must wait for another time.
wait.
As for those who deal with these front and rear, no one has jumped out yet, but this is normal. Even if the other party wants to take advantage of their attention to be attracted here and solve the tail, it is difficult to have the conditions and abilities.
Wanting to do is a different matter! Nanjing police were drawn by them in large numbers. Even if the other party weaved a large net in the police system, it was temporarily incomplete. Not to mention hiding the matter without any trace, it was a Japanese spy
Organizational structure may become a problem in interrelationship.
After all, although it has not been publicly recognized, everyone knows that they are mainly targeting Japanese people at the moment. People with problems in the police, whether they want to inquire about the news or avoid suspicion, they will take the initiative to come forward.
, but at least it won't refuse.
As for the black police who may be sold to cover up the matter, of course, this refers to those who are unaware of espionage and are simply helping with money or other benefits.
This case has been very widespread, and the police are even the hardest hit areas. These people are now panicking, so how can they be in the mood to help you do those things?
So! There is no such condition at the moment. Help them clean up their tails. It is not ruled out that one or two items have that condition, but it is impossible to cover them all up. Therefore, the other party's actions are likely to come to an end in the initial case.
Therefore, after Lin Wenhua arranged the relevant matters, he returned here to take charge. However, the case was too complicated and involved too much. After leaving for a while, a lot of things would be piled up. Therefore, Lin Mo was responsible for the specific work, and he was responsible for grasping it.
Ask about the general direction and contact and communicate with all parties to negotiate.
"Brother! Is this a big scope? All parties have almost knocked down the headquarters phone number, and warned us openly and secretly to lobby or plead for mercy to stop and stop at the right time."
Lin Wenhua rubbed his temples and walked to Lin Mo to inquire. The case was found to be unreliable and followed the clues to the end, which made many people unable to sit still and put huge pressure on them.
"Brother! It's not our turn to consider this matter! It's not our turn to make decisions! We just execute the orders and check them out. When it's time to stop, the superiors will speak!"
Lin Mo did not agree. He had guessed this, considered it, and took into account the action arrangements. He definitely did not have any major problems to do so.
Lin Wenhua frowned and said, "Now, there are important people from all parties including military, police, constitutionalism, etc. If you continue to investigate without discernment, you will be afraid that the incident will not end later!"
Lin Mo smiled and said, "Brother! You still haven't seen the inside of this matter clearly. This caused such a big disturbance. Do you think the people you are talking about are caused by us?
Even if the case is still settled? In the end, no matter what the reason is or how the case is handled, it will take a call from the higher authorities, and it is no longer within our control.
Now, we have actually become the spokespersons of the above. What we execute is their will. Whether we recognize or not, the fact is that. If we give in, it does not mean that the above is giving in and compromising. This is our qualification
Represented?
Of course, this matter is not as serious as you think. Most of the cases involved in the official sect are middle and lower-level personnel. For those with the senior management, some people in the subordinates or faction were damaged, so it would not be
Injure them.
As for the people above us, as long as we persist, they will be in a favorable and proactive position. Because they want to stop us, they will ask for it and avoid being affected. You have to accept this afterwards, right?
If we give in, the superiors will be passive. Not only will we not be able to get much, but we will also likely push all the things to us in order to solve some trouble. This is really a blame, but it is not a way to act after getting the benefits!
Moreover, those who ask for the above and call the case to be stopped will be given an explanation. If we give in, the chip will be thrown out. Then, what will be given to us at that time will most likely be us."