It was not difficult for the Kuomintang government to intercept the telegrams, but the difficulty was how to get them to decipher them.

You can't make it too simple and make them feel weird, and if it's too difficult, it's more difficult to decipher.

Xiao Lu has considered the problem that Zeng Guansheng said, and he said: "You just send a report, and the Xi'an office here will find a way to release the news, so that the Kuomintang government can compare the intercepted messages and get the news." ”

"In that case, the encryption formula needs to be changed." Zeng Guansheng said.

If the encryption method is not changed, then it will be mastered by the other party, so this time we will use a new encryption formula.

"You are professional in this, and you are responsible for this." Xiao Lu was actually worried about this when he looked for Zeng Guansheng.

This message can be sent to any telegrapher, but the problem is that the encryption method must be completely new.

Even if it is deciphered, it will have no impact on their future radio work.

As for you saying that you will use this encryption method once, and then you will not use it again, will it be doubted?

Of course, I will be suspicious, but this is used to deceive the Japanese, and one time is enough.

At this time, Fang Chunlei and Deng Ruonan of Lantian were waiting for news in the room, and he basically would not leave the room, so as not to cause trouble.

Although there are not many people who know him, he has also carried out tasks in Xi'an City, who knows if someone will suddenly come to Lantian.

When the time comes, do you say hello or don't say hello when you see it on the street?

Later in the evening, Deng Ruonan left the house to see if there was any news.

When he returned, he said, "Start listening." ”

This sentence shows that Xiao Lu and Zeng Guansheng have already begun to act, and the Japanese radio station in Xi'an City may work at any time.

Without saying a word, he put on the receiver's headphones and his expression became serious. Sleep time is readjusted back, one hour a day, now is the critical moment, there can be no moments of slackness.

On the first day, there was no harvest.

Continued the next day.

For three days, there were no major discoveries, but this time he was not in a hurry.

Because according to the organization's arrangement, Japanese radio stations will definitely be unable to help but work, but now they are frightened birds, and it is reasonable to be cautious.

Finally on the fourth day, Fang Chunlei found an unheard of radio station.

"Record." He immediately said to Deng Ruonan.

Deng Ruonan's hand speed was very fast, and he recorded in the notebook while listening, and when the radio signal disappeared, a lot of numbers appeared in the notebook.

"The dispatch time is very short, about five minutes." Fang Chunlei said.

Looking at the contents of the book, Deng Ruonan said: "But the amount of information sent by the report is very large, and it seems that the person who sent the report is a veteran." ”

The short time and the lot of content are enough to explain some problems.

Deng Ruonan recorded the radio frequency, and then they had to keep an eye on the station.

"It's just that we can't be sure of its location right now." Fang Chunlei: All they can do is monitor the work of this radio station, but if you want to find out the location of the radio station, you can't do it.

"It's very difficult to lock down the location of the station, and we need signal monitoring equipment, which we don't have." Deng Ruonan looked at the receiver in front of him, this was their only device.

"I don't have a device, can I lock it?" He asked.

"If the person's radio station is not using batteries, then the power can be cut off in the area when the radio station is being monitored."

"If the radio signal disappears after a power outage in any area, then you can roughly lock the location of the station." Deng Ruonan explained.

"But we don't have that." Fang Chunlei believed that only the Kuomintang government in Xi'an had the conditions to control the electric gates in the city.

"In fact, there are many ways, such as where no one lives, but the meter goes fast. Or someone's lamp, which is always on in the middle of the night, or something like that. ”

"However, the above methods still need to lock an area first, and if it is too big, it will not be investigated at all." Although he found a suspicious radio station, Deng Ruonan was not happy.

"What now?" Fang Chunlei's task is to find out the radio station, and now that he has found it, what next?

"Friday, three o'clock in the morning, this may be their specific time to send the report, and the next Friday at the same time, we have to pay special attention." Deng Ruonan judged.

There is a set time for the report, not that you can send the report when you want to, unless it is an accepted radio station, waiting around the clock.

It is impossible for the Japanese radio station that can receive this radio station to wait around the clock, after all, how often does the radio station in Xi'an city work, and he has been tuning the frequency and waiting there, isn't it a waste of time?

Therefore, it is a very routine operation to receive and receive telegrams at a specified time.

"This is the time to send the telegram, and there may be a time to receive the telegram, otherwise a message will be sent out, and it will take a week to reply, will it not be timely." Fang Chunlei raised his own questions.

It's not just about sending news, maybe the Japanese will arrange their next tasks according to the news in Xi'an, then they will definitely have to accept telegrams.

A week is too long, the situation is changing rapidly, and the daylilies are cold.

"You go and deliver the news, and I'll continue to listen." The frequency modulation is the same, and the news that the radio station in Xi'an City can receive, he naturally receives suspiciously.

"I will ask the comrade to send the message out and see if it can be deciphered."

This deciphering work, Deng Ruonan is difficult to do now, and Zeng Guansheng needs to go out in person.

The main thing is that there is no time for me, and there is no time for Deng Ruonan to study here.

"You'd better not leave with the message, can you write it down?" Fang Chunlei asked.

Lantian County, not their territory, may be in danger at any time.

You go out into the street with a message, and if you encounter a search or something, you can't explain it.

"Yes." Deng Ruonan said immediately.

She was engaged in telegraph work, and memory was a must, so she sat aside and began to memorize silently.

To be on the safe side, she memorized it many times to make sure it was correct before she put down the message and left the room.

At this time, it was already dawn, and there were many pedestrians on the street, and her appearance was not abrupt.

The telegram Fang Chunlei did not destroy it immediately, but picked it up by himself and also began to memorize.

When you are sure that you remember it, you destroy the message.

This is just for the sake of insurance, in case Deng Ruonan's memory here has problems, and he can also confirm it.

The message was burned for security reasons.

The surveillance continued until Deng Ruonan returned, and no new discoveries were made, and it seems that the sending and receiving of telegrams were not on the same day.

It's easy to understand, after all, when you receive the news sent out by Xi'an City, you always have to discuss and sum it up, and it is impossible to give an order immediately.

"The content written silently has been sent back by a comrade, and we will continue here." Deng Ruonan came back and said, it seems that her memory has not deviated, and she does not need Fang Chunlei's corroboration.

Until there is no new order from above, they are going to continue the work here.