Feeling the inquiring eyes of everyone, Xiao Fei lowered his head and thought about it, then looked up and pointed to the various parts in the box and said:

"Well, I think that in the first few years, the self-made voice radio system seemed to be a bit of a problem, and you were right, it mainly depends on the level of our chemical industry, non-ferrous metallurgy and glass manufacturing, for example, the refining process of this non-ferrous metal is a big bottleneck.

Let's put it this way, electronic components require high purity of materials, so it is impossible for us to make tubes and transistors for a long time, so it is almost impossible to talk about wireless walkie-talkies.

However, according to the history of the development of human electronic communications, before we develop electron tubes and transistors, we can give priority to the development of wired communications, and wired telegraph and telephone are relatively simpler than wireless.

Of course, we also have to work hard to expand radio communications, and we can try to develop a Marconi radio communication system at the beginning.

Because as long as there is a primary metallurgical industry, primary components such as ore detection components, frequency modulation coils, small transformers, and resistor capacitors can be made. After all, human radio technology was also developed on this basis.

However, it must be emphasized here that whether it is wireless or wired, there is another key component: the battery. ”

Xiao Fei said and opened a wooden box and showed it to everyone:

"See? This is the transceiver battery, although we can't make such a small volume at the beginning, but we should be able to make a battery with similar power but a little larger volume...... Belch...... How big is the volume, you ask? Well, probably, it's about the size of a household refrigerator......"

"Such a big battery?"

"Is it a battery?"

The crowd listened and asked.

"yes, and, ah, the power may not be too much...... Hey, don't worry, although we can't build a high-power battery for a while, can't we replace it with a generator?

As you all saw just now, there are a lot of real objects in the generator cave with hand-cranked feet, as long as there are suitable metal materials, such as magnets, copper wires for coils, etc., oh, and bearings or something, it is not too difficult to build a generator, by the way, there is also a hydraulic ......."

When everyone heard this, they began to be a little dazed again, but when they saw Xiao Fei talking with confidence, they felt that this young man was really quite expert, so they nodded their heads in agreement with Xiao Fei's statement.

Then Xiao Fei said:

"As for the quality of manpower or hydroelectric generators, it may be a little worse, it doesn't matter, it will develop slowly. We have an advantage over the ancients, because we don't have to take too many detours and know the direction of research and development, which is very important for us to climb the technology tree! ”

"Brother Xiao, I'm still more concerned about the portable radio communication system you just mentioned, if I led my troops to fight a war and had this thing, it would have been an anti-heaven existence three hundred years ago."

High school student ** shouted in the crowd.

"Well, what about radio communications...... Look at this option coil and transformer, the quality of the material is really good, if the material we made in the early stage has too many impurities to affect the performance...... It doesn't matter, we can increase the power by increasing the volume.

What the? Oh, you ask me how much power I can reach? It's hard to say...... Well, it's perfectly fine to reach more than a kilowatt!

The whole communication system is a bit bulky, but at least we can equip it on board, right?

Even so, it feels like Uncle Anna gave us a golden finger, because he gave us a lot of technical and process secrets, such as how to choose the primary production process of detection ore and resistor capacitors, to be honest, Anna talked to me about this, and I think some of the key details seem to come from the future...... Ay! Maybe I'm lonely......

As for the one you mentioned, portable radio communication equipment on land, well, it takes time.

Although it may not be possible to use portable radio communication equipment on land in the short term, I will try to get a radio transceiver drawn by a horse-drawn carriage as soon as possible, and if the metallurgical industry and the chemical industry cooperate, it should not be a big problem in five years...... As for the more portable ones, such as the kind that can be carried on the shoulders of individual soldiers, the specific time is not clear, whether it is six or seven years or eight, nine, or ten years...... Ay! It's not up to me......"

Xiao Fei said this, spread his hands and responded......

…… At this moment, the cave is full of people who are talking about this type of discussion, usually a group of people around one or two experts in this field are asking, answering and discussing.

At this time, on the other side of the cave, Hou Xianglin, the only authoritative speaker in the construction profession among the traversers, who had just given a speech to everyone on the truck crane, had just finished answering the questions of the onlookers, and then got into the cab of the truck crane, leaving a group of onlookers outside, and letting the group of people talk about the various construction vehicles in front of them.

"Huh? Didn't Krupp make cannons? Why are you building construction vehicles again? ”

"You're lonely, Krupp, as long as it's mechanical, you can make almost anything......"

"If the quality is not up to par, and there is a failure after crossing, then we will be blind."

"Yes, there are so many industrial equipment installations in the wasteland, roads, houses, and docks, relying on the manual labor of less than a hundred of us?"

"That's definitely not going to work, I'm tired!"

"So the crux of the matter is whether these construction machines are reliable?"

"Is there enough fuel and replacement parts?"

"And! Which of you can fix cars? ”

"Rest assured, those of us who are engaged in machinery know a little bit, and there are no secrets in technology about automobiles."

"I've heard Nicole tell me that Brother Hou can also repair cars, but he is a wild man."

At this time, Xianglin finally got out of the cab, and someone in the crowd immediately said.

"Repairing cars is Boss Luo's business, but I can participate in repairs, after all, I can drive these vehicles."

"Do you know how to drive?"

"Of course it will, I often led the construction team into the ravine to repair tunnels, and it won't work if you can't do this......

"Brother Hou can! So you're always a big fan of architecture, right? ”

Someone in the crowd of onlookers asked Hou Xianglin.

"Dana doesn't dare to be a big deal, but since graduating from college, Ben Dick Si has been working on the construction site, and she has been working on the construction site for many years, and she has basically done everything on the construction site."

"Really? So is this construction vehicle reliable? Don't it take long for it to break, there's nowhere to fix that new world. ”

"yes, I'm worried, and sooner or later these vehicles will wear out and be scrapped, in case we haven't developed it by then, then we'll be blind."

"Not really, right?"

"Brother Hou, these vehicles should be more durable, right? It looks like it's German! ”

Hou Xianglin, 28 years old this year, was rescued and resurrected by Nicole after he died in a tunnel collapse.

Probably the reason why he has been exposed to the wind and sun all year round, and has been sleeping on the construction site all year round, the twenty-eight-year-old obviously looks like a man in his forties, and the reason why he came to participate in the crossing is, of course, because Nicole saved his life.

In the hospital room, Nicole told him about the "Time and Space Marker" research plan, so he didn't hesitate to ask Nicole to inject him with the red potion.

He solemnly told Nicole that orphans are fearless in this world because there are no bonds!

At this time, as the only senior supervisor and contractor of the construction site in this group of people, he belongs to the kind of professionals who have worked in Party A and Party B, and naturally receives everyone's attention.