Li Ke took out the things before he was about to leave. He planned to take out a total of twelve large radio base stations, the kind used to build signal towers. In fact, signal towers do not need to be of high specifications, let alone modern standards. It's fine if it's high.
Then prepare another set of some wearing parts, which are produced at the modern military industry level.
In terms of military industry, you can't say it is advanced, but it is definitely based on the first principle of being strong and durable, so there is no doubt that it will be used for many years. At least it remained silent until these students of the Tang Dynasty made wireless radios by themselves without any problems. .
The first thing to do is to set up one of these things in each of the eight directions. For the time being, it is assumed that the Western Region is in the Yili River Valley, which will be the forefront of the Tang Dynasty for a long time.
The north side is naturally assumed to be where Xue Yantuo's royal court is, the northeastern part is assumed to be in Youzhou, and the east side is set up in Hudu, or Shanghai.
Due to special circumstances on the south side, first is Guangzhou Port, then Lizhi Port, one has to be built here on Lizhi Island and Lizhi Strait.
In the southwest, Li Ke's idea is to build one in Lhasa in later generations, and then build one in Dongyang Peninsula, which will be Oman Peninsula in later generations.
There are eight sets. Considering that it is more difficult to convey messages in mountainous areas such as Sichuan, one will be built in Kunming and other places in later generations. This will make ten sets.
There are two remaining sets of flexible mobiles. If Monobe Murakata cleans Oceania, one of them will definitely have to be built there by then.
The remaining set can be used anywhere at that time. This is the approximate arrangement of twelve sets of large wireless devices. In addition, Li Ke is also planning to take out ten sets of medium-sized wireless devices.
There are many ways to generate electricity for large wireless devices. The best way is of course that Li Ke directly provides a generator, but he does not have this. The other is to use a steam engine to drive the generator.
This is actually not difficult. In addition, many indigenous methods from the founding period of the People's Republic of China have very good uses, such as wooden turbine power stations. This kind of small hydropower station is built with wood. It is simple to build and does not require high power generation.
This so-called large-scale wireless device actually requires only six kilowatts of power. With Datang's current industrial base, the power generation efficiency of six kilowatts can be achieved in various ways.
Not difficult.
The simplest thing is to use a steam boiler directly. Coal, wood and other things can be burned to achieve a power generation efficiency of 6 kilowatts without using much fuel.
Paired with the modern batteries equipped with these large radio devices, they can basically generate electricity for a day and can be used for a long time.
The ten sets of medium-sized wireless devices are arranged in some densely populated areas and important grain-producing areas. These areas are all within the territory of Datang, and there are large radio device signals around them, so they can definitely be contacted.
The method of generating electricity for these medium-sized radio devices is even simpler. A foot-operated generator or a simple generator pulled by a packhorse can be used.
Anyway, there are batteries that can store electricity, just make sure the batteries are charged.
Their batteries can last a long time without regular use.
As for what Li Ke found in the database, such as the many methods used during the Tubal Road period, such as soaking the batteries in salt water to improve power problems, Li Ke can now do without them.
In fact, the best way is to directly divide the photovoltaic power generation panels that Li Ke took out before into a dozen parts and place them in their respective places so that they can continuously generate electricity. Anyway, the battery stores electricity, so there will be no shortage.
But Li Ke didn't want it to spread.
Let's arrange it this way first.
After sorting these things in the warehouse, Li Ke left the warehouse and went to Lu Daqiang who found a group of students who were particularly good at electromagnetics.
Since it is to be taken out, it must be shown to Lao Li, and then the communications department will be placed under the management of the Intelligence Department.
So after finishing it, Li Ke went directly to Liangyi Palace to find Li Shimin.
"Dad, I'm leaving, but before I leave, there's something I'm worried about and I want to fix it." Li Ke said directly as he came up.
"What's the matter?" Li Shimin asked calmly, "What's going on?" Something new? It’s good to have something new! Isn't this good? The more the better, the more there is the harder it is to get out, the harder it is to get rid of.
"Thousands of miles of sight and ears of the wind." Li Ke said simply.
"What?" Li Shimin thought he heard wrongly.
"Thousands of miles of sight and ears of the wind. To put it simply, it is a long-distance communication device." Li Ke said, "In other words, it is a sound transmission for thousands of miles."
Li Shimin: "?"
Are you telling me a fairy tale? Your father, I just want to trick you into becoming an emperor. Good guy, you want to tell me myths now, right? how? You want to tell me whether you are the reincarnation of a god?
Looking at Lao Li's confused eyes, Li Ke said helplessly: "Dad, in short, there is an invisible signal transmitting in our air, and this signal I call electromagnetic wave, for example, light It’s an electromagnetic wave.”
Li Shimin: "?"
He feels like he is listening to a book from heaven. Listen to what you are saying. What kind of electromagnetic waves are they? What are electromagnetic waves? Also, how can you identify what it is? How to identify? Can you catch the light?
Why do I understand every word you say, but I can’t understand them all?
"Well, we can use a device to emit an electromagnetic wave that has certain characteristics similar to light, and then we can build another device thousands of kilometers away to receive this electromagnetic wave, and then transmit it It is transformed into a signal that we are familiar with, and by specifying information compilation for the signal, the purpose of transmitting the message thousands of miles away is achieved." Li Ke tried his best to explain to Li Shimin in plain language.
Li Shimin: "???"
"If you don't want to say it, you don't have to say it." Li Shimin looked at Li Ke and said, although there is currently only Chang Lin in this room, but you deliberately appear to be uneducated and illiterate, you still have to be beaten, do you know?
"Oh, dad, you know anyway, I just have a way to deliver the message thousands of miles away." Li Ke was helpless, how could I explain it in an easy-to-understand way? It was too popular, and Li Shimin thought it was telling a story. It was too scientific, and Li Shimin had never learned this, so how could he understand it.
"Okay, tell me, how long does it take for you to deliver news thousands of miles away?" Li Shimin said, suppressing his distrust.
"One second." Li Ke opened his mouth and said.
Li Shimin: "???"
Are you kidding me, your father?
