Doomsday: Unlimited upgrades to the shelter

Chapter 152 Preparing to Establish Communication
Ma Wu paused for a few seconds, "Unless those who want to attack us are not one group of people, but several groups of people. They have the ability to build their own base towers and can send and receive new numbers to meet their own communication needs.

"Uncle Ma, do you mean that the people who want to attack us are strong enough to build their own base stations?" Xie Yannan couldn't help but shudder.

You must know that it is already remarkable that most people can have a full stomach in the last days, and it is indeed a bit shocking that these people can also establish communication.

"Yeah, you can say that, but this communication is not very difficult..."

Ma Wu just wanted to explain, but he heard the impact above his head seemed to be getting stronger and stronger, and did not get weaker as Ma Wu predicted.

"If this goes on, I'm afraid it won't work..."

Xie Yannan looked up again and murmured to himself, a little more worried.

"Don't panic, they're about to stop."

Ma Wu patted Xie Yannan's shoulder for a little comfort, "It's just that these little things joined forces and made a few dying struggles."

Xie Yannan nodded, he didn't know what the opponent was, he only knew that it looked like a fireball, and he didn't know how to stop the opponent at all, even if he wanted to stop it, it was just a waste of energy.

Sure enough, as Ma Wu said, after those few violent impacts, the sound above his head became smaller and smaller.

Occasionally, some stars would fall down, but they were basically completely extinguished before falling to the ground.

It was just because it was a little violent at the beginning, causing the falling sparks to burn many places on the ground black.

"It's finally clear. Our opponent is incredible. I guess this is wireless surveillance. It can last for more than an hour..."

It can make Ma Wu sigh, presumably this thing is really high-tech.

At this moment, Xie Yannan could clearly hear the voice above his head getting smaller and smaller, until there was no more, so he returned to the ground of the basin valley with everyone, intending to take a serious look at what happened.

With such a big commotion, what exactly was attacking the entire basin just now.

But the sound was gone, and the blobs of solid flames overhead seemed to have completely disappeared.There was no trace left of the top of this valley, as if they had never been there.

"Could it be that the thing just now is a biochemical weapon like the apple?"

Xie Yannan found it strange why such a messy shelter as his own would be attacked by other high-tech technologies and still be noticed.

"This is not a biochemical weapon, otherwise the land under our feet would have been gone."

Ma Wu analyzed rationally, "After all, so many stars fell from the top of the head and completely fell into the basin valley. If those solid flames were biochemical weapons, we should all be deep in the swamp by now."

You must know that the power of biological and chemical weapons is not only in American blockbusters, but also in life. Just like Ma Wu predicted just now, even the land can melt into a swamp for you.

Xie Yannan was a little unwilling to give up, and asked after a pause, "What the hell is that, it looks so powerful?"

Just an attack that lasted for more than an hour is already remarkable, and they can find their refuge and carry out activities with a purpose, which looks like man-made.

"I don't know for sure, but I'm guessing the flames that fell from those things just now are as powerful as the apple juice in the apples you brought back."

Ma Wu sighed, "There are too many opponents, and the road is long and difficult."

After finishing speaking, he patted Xie Yannan on the shoulder and walked away.

"No, Uncle Ma, you come back."

Xie Yannan suddenly recalled what Ma Wu said just now was a very simple thing, "You said that building a launch tower is a very simple thing?"

He suddenly had a bold idea in his mind.It would be great if a launch base tower could be successfully established in Pengu, after all, it would be more convenient for people to communicate with each other.

It would be better if the location of the new base tower could be spread a little further.After Xie Yannan went out, she always checked Wei Xiaofei's condition through video to see if she was in danger.

In the future, it will be much better to be able to make calls directly through signal voice, so that you can react immediately when encountering danger.

"It's very simple, but with our current technology, even if it is successfully established, the range of use will be very short."

Ma Wu stopped, turned around, and walked back to everyone.

"Basically, ordinary communication signals use pulse signals, and we can fully utilize the energy of the meteorite and the wavelength of the meteorite to transmit signals. The receiving end of the signal also sets the wavelength of the meteorite. In this way, This frequency band is unique.”

"but……"

Ma Wu stopped here again, as if there was an insurmountable technology.

"But there is a problem. We don't have the technology to create multi-terminal communication equipment. We can only communicate one-to-one. That is to say, there are two communication equipment in total, one for you and the other for everyone in the valley to share. "

"Single-ended is also available. At least when I'm outside, it's more convenient to contact you in real time."

Mainly worried about Wei Xiaofei, after all he spends too much time out.Ever since that mysterious woman reappeared, he always felt that this basin was not as simple as he imagined, and worried that something would come out and suddenly hurt Wei Xiaofei, after all, this was his beloved woman.

"You can try single-ended communication equipment, but the distance may not be too far. If you want to go farther, you need to prepare a signal amplifying transmitter or something."

Ma Wu explained that the simplest single-ended communication equipment only needs to maintain reception on the same frequency, which is easy to implement.

"Give me a few days, and I will prepare all the materials you need in a while."

Xie Yannan nodded.

According to Xie Yan's next plan, he will exchange some of the raw materials with the existing grains in Pengu.

You must know that although there is very little grain in the valley, there are quite a lot of beans in the grain before, and the storage conditions of beans are strictly limited, it is easy to mold and worm, and it must be airtight and ventilated.

Therefore, Xie Yannan planned to take Pengu's nearly one thousand kilograms of beans to the shelter to exchange for raw materials.

[The system has automatically turned on the smart mode]

【Storage Class】

【Bean: some】

[Sell or store]

【storage】

Wow! It took about ten minutes before the system completed the storage.It was almost dark by this time. Xie Yannan planned to have a good sleep today and go to exchange for raw materials early tomorrow morning.

[Generate 350 degrees today, get 350 points]

[4.2 tons of purified water today, get 4200 points]

【Purify 2.9 square meters of natural gas today, get 3000 points】

[All humans in the shelter survive for more than 24 hours and get 100*7 points]

[System points have been updated, there are 13401 points]

【One anti-epidemic pill】

[Sell or store]

【Sale】

[System points have been updated, there are 23401 points]

(End of this chapter)