There is a space for passenger planes in the late Ming Dynasty

Chapter 168 Improving Intelligence Delivery

The longer Lin Feng stayed in ancient times, the more inconvenient Lin Feng felt in communicating. It has been a month and a half since Li Xiongzhen went to Luoyang, and there is still no news.

Thinking about the traffic situation in ancient times, it was also very normal. It was more than 800 kilometers from Fugu to Luoyang, and it would take more than half a month to travel without stopping.

They set out for Luoyang in late February, and also passed through Taiyuan in the middle. It was estimated that they would arrive there in mid-March. They settled in and reported any new situations. The earliest they could send a message would be mid-April.

It doesn't matter if business information is transmitted slowly, but if it's an emergency military situation, this speed will be too terrible. Lin Feng feels that as his territory expands, he still has to improve the way he transmits information.

With the modern communication tools we have at hand, there are a lot of mobile phones in the space. The 180 or so passengers brought at least more than 200 mobile phones. But without a signal, it’s useless, and the phone won’t work.

The only ones that can be used now are four walkie-talkies. We tested them in Yulin City last time and found that there was no big problem in spreading them for more than ten miles. But the maximum distance it can be transmitted has not yet been tested.

Thinking of this, Lin Feng quickly entered the space, came to the cockpit of the passenger plane, picked up the instruction manual of the intercom and read it carefully.

The walkie-talkie equipped on the aircraft is a standard commercial walkie-talkie with a transmitting power of 4W, a frequency range of 400-800MHz, and a communication distance between 800 meters and 8 kilometers.

Of course, this communication distance refers to the modern electromagnetic environment where radio waves are everywhere, which is generally no more than 8 kilometers. In an environment like Ming Dynasty where there is no electromagnetic clutter at all, the range will definitely be much longer.

The working frequency of this walkie-talkie is ultra-short wave, which propagates in a straight line. The operating distance will be affected by the curvature of the earth, so the general effect will not exceed 30 kilometers.

But if it can be used at a high place, it should be able to greatly increase the range. The key is that now in the Ming Dynasty, the radio environment is very clean and there is no interference. As long as it meets the straight-line propagation requirements, it should be able to connect.

After Lin Feng understood it through research, he immediately took out two walkie-talkies for testing.

He called Guo Zheng, who had been thinking about this Bailitong artifact since he used it last time. When I heard that there was an opportunity to test the longest communication distance, I immediately ran over.

Lin Feng first asked him to ride a horse to a place 20 kilometers away and tested it. Sure enough, he could still connect and his voice was quite clear.

When we reach a place 30 kilometers away, we can still contact you, but sometimes it is interrupted. It seems that the farthest transmission distance is in flat land.

Then Lin Feng asked him to ride a horse to fifty kilometers and find a higher place to try again.

Guo Zheng climbed up a 100-meter-high mountain at 50 kilometers, and the connection was indeed established again.

After several tests, we found that by climbing a hundred meters up a mountain, we can probably achieve a communication distance of about fifty kilometers, but there should be no big mountains blocking the way.

If you can climb to a higher place, the range will probably increase.

However, northern Shaanxi is mostly deserted grasslands and hills, with no high mountains. It is difficult to conduct testing in higher places.

In space, Lin Feng used the calculator that came with his phone and calculated the earth's curvature calculation method introduced in high school physics. He calculated that by climbing up a 300-meter mountain, communication could be achieved at a distance of 100 kilometers.

Lin Feng estimated that this was the longest distance communication that could be achieved. Otherwise, it would be too strenuous to climb a mountain more than 300 meters to receive information. Moreover, the power of the walkie-talkie was also limited, and it was impossible to extend the range indefinitely.

But whether it is fifty kilometers or one hundred kilometers, it can greatly speed up the transmission of information, at least covering the sacred tree is not a big problem.

The key now is that there are too few walkie-talkies, only four, and they have to be taken back frequently to recharge, which is really too few.

Lin Feng reluctantly rummaged in the cockpit drawer, and he found two spare walkie-talkies and put them in a box.

With these six walkie-talkies, information transmission within a hundred kilometers can be effectively constructed. But this is not enough. Other places further away, such as Luoyang, must rely on means such as carrier pigeons.

Lin Feng called Guo Zheng and others over to discuss improving the transmission of intelligence information.

Due to the small number of people, I didn't go to the meeting hall of the Governor's Mansion and called people directly to Lin Feng's public room.

Lin Feng was sitting behind the office desk, looking at Guo Zheng, Fang Qingshi, Ma Ang and others sitting below, as well as a man named Yu Feng.

This person turned out to be an agent placed by Jin Yiwei in the border army. He reported corruption in the border army several times, but was suppressed by Shangguan Goulian and the generals of the border army. Not only was the general who was reported fine, but he was also repeatedly retaliated against, and an excuse was found to demote him from a hundred households to a small flag.

That time when Inspector Ren came over to handle the case, he came with him. Because he was also dissatisfied with the imperial court, he was recruited by Guo Zheng. He was indeed very capable and quickly entered the management of Tingfengwei.

"Guo Zheng, as the territory controlled by our Zhenming Army continues to expand, the requirements for information transmission are getting higher and higher. Can you tell us any ways to increase the speed of intelligence information dissemination?" Lin Feng asked straight to the point.

"Sir, the best way to disseminate information is your Bailitong artifact. Unfortunately, the number is too small, and you have to take it back frequently to replenish energy." Guo Zheng said with a look of regret.

"I know this without you having to tell me. Is there any other way?" Lin Feng then asked. "Sir, the fastest way to deliver the imperial court is to rush for eight hundred miles. You can change horses without changing people. The fastest you can travel is about five hundred miles a day. But this requires building a lot of stations, and on average, you have to change horses for thirty miles." Yu Feng said.

"Five hundred miles, isn't it eight hundred miles expedited?" Lin Feng asked curiously.

"Eight hundred miles is just an imaginary number. Generally, it is impossible to reach it. Unless you have a very good horse and the road is very good, it is possible to reach it, but this is definitely not the norm." Yu Feng has been in Jinyiwei for a long time, and the situation is relatively good. familiar.

"Building so many stations is quite troublesome. Is there any better way?" Lin Feng continued to ask.

"Sir, last time when the Right Banner attacked, we used the Haidongqing provided by Zuoqi to deliver the message quickly. There should be no problem within a hundred miles, but beyond the grassland, the Haidongqing was unwilling to fly.

We can try to cultivate homing pigeons, which are widely used. However, the reliability of homing pigeons is relatively poor. Sometimes they are shot down while flying or eaten by birds of prey such as eagles, resulting in the loss of information. "Ma Ang also made suggestions.

"Where's Qingshi? Do you have any suggestions?" Lin Feng asked.

"Sir, everyone has just talked about several methods. I think there is no other faster method." Fang Qingshi replied.

"Okay, it seems that there are only a few methods of transmitting intelligence information, such as Kuai Ma, Fei Qiao and Baili Tong. We need to combine them." Lin Feng concluded after listening.

"Yes, combined delivery is the most efficient. For example, you can use fast horses or birds to deliver it. When you reach a place of fifty kilometers, you can use Bailitong to deliver it. It saves at least half a day and is very safe." Guo Zheng agreed. road.

"In this way, we first establish a fast information transmission channel from Shenmu to Fugu. I will give you four Baili Tong artifacts and make test calls every morning, noon and evening. If there is information, send it to you. If there is no information, shut down immediately. Save energy.

Considering the communication distance of Bailitong, you should find a high ground between Shenmu and Fugu to build a communication station for relay communications.

In addition, communication requires energy, and the energy can only be taken back to me to replenish it, so calls must be economized, and no nonsense is allowed, let alone idle chit-chat. This must be made clear as a discipline.

You place two Bailitongs each at Shenmu and the transfer station. If one is out of energy, send it back immediately to replenish it, and the other ensures normal communication. do you understand? " Lin Feng arranged.

"Understood!" Guo Zheng said happily, they could finally use this communication artifact.

"In addition, we cannot rely solely on Bailitong for communication. You, Tingfengwei, need to train a group of homing pigeons to achieve long-distance information transmission.

Using carrier pigeons may be intercepted by the enemy. In order to ensure the safety of the message, you have to write a code book. The message carried by the homing pigeon must be written in code and then interpreted after receipt. Lin Feng continued.

"Understood, Yu Feng has experience in this area. He has been in contact with Jinyiwei before." Guo Zheng said.

"Then Yu Feng will compile the secret language book, and then train a group of reliable secret communication soldiers to be responsible for compiling the secret language." Lin Feng explained.

"Understood, we will implement it immediately." Guo Zheng responded.

"The transmission of intelligence information can sometimes determine our life or death, so it must be fast and safe. Please think about it carefully.

Come up with a plan as soon as possible to establish an intelligence information network covering Xi'an, Jiazhou and Luoyang, Shaanxi Province, to ensure that our Zhenming Army can obtain timely and accurate intelligence. Lin Feng continued.

"Understood, we will build this intelligence network as soon as possible, but this may require a lot of money to support." Guo Zheng made a demand.

"You make a spending plan and submit it to me for approval and I will allocate money to you." Lin Feng is not short of money now, but he must establish rules for spending money.

"Yes!" Guo Zheng replied.

"Take these four Bailitong artifacts. You also know the value of this artifact. You must ensure the safety of the artifact!" Lin Feng emphasized.

"Understood, there must be people and artifacts!" Guo Zheng assured.

"In addition, the recruitment and training of Tingfeng Guard members must be strict. Those with family members are arranged to live in Fugu. This can not only provide centralized care, but also help ensure the loyalty of the members." Lin Feng continued.

"Understood. Thank you for taking care of our Tingfengwei family." Guo Zheng replied.

"As for intelligence work, we must strictly implement the single-line contact system. You must divide the work and take charge of one direction to prevent problems from being followed and eliminated in one fell swoop." Lin Feng continued.

"Understood!" Several people responded.

　Intelligence is life and must be improved immediately.

　　
  　
  (End of this chapter)