Nowadays, these radio devices have not only improved in function, but are not much larger in size.
Due to the special needs of Morgan and others and limited by technology, their radio devices were basically shortwave devices.
But the advantages of shortwave are very significant:
First of all, the shortwave radio station is very convenient to set up, and the antenna is not too long;
In addition, the most important thing is that shortwave radio can achieve long-distance communication. In theory, it relies on the refraction of the high-altitude ionosphere, and the propagation distance is very long. Global communication is also a problem, and it can achieve the so-called "global communication."
Of course, this is only a theoretical propagation distance. If you want to effectively transmit information, you also need to consider power.
However, it is currently in the initial stage of radio. The electromagnetic environment is very clean and electromagnetic interference is almost negligible. Under an ideal environment, a shortwave radio station with very small power can have good communication distance and quality.
Tesla borrowed Li Yu's electronic triode technology to amplify circuits, which was a revolutionary advancement for radio.
The radio device made this time has a power of about 10W.
Although it sounds small, under the current good electromagnetic environment, covering the entire North China is not a problem.
Li Yu came to the study, wrote a letter to the newspaper, and sent a report saying that he was going to hold a "product launch conference" at the Liuguo Hotel in Dongjiaomin Lane.
Li Yu also sent a special telegram to Beiyang, and they would probably be very interested in this.
The Liuguo Hotel is a very impressive hotel. Although its status is not as good as the Beijing Hotel, it is located in the special Dongjiaomin Lane and has witnessed many historical events. The earliest negotiators of the Northeast Yiqi lived in the Liuguo Hotel.
For a long time after that, it was a special guest house of the Ministry of Foreign Affairs, and ordinary people could not enter.
After it was reported in the newspapers, the embassies in Dongjiaominxiang were indeed interested. After all, this was something appreciated by top financial tycoons Morgan and Rockefeller in the United States.
Coupled with Li Yu's current supremacy in the scientific community, it is even more exciting.
The British ambassador, the Japanese ambassador, the German ambassador, the French ambassador, the Russian ambassador, etc. all came by themselves or sent representatives to visit.
The person coming from Beiyang was Tang Shaoyi.
Tang Shaoyi smiled after seeing Li Yu and said: "Brother Shucai! I have seen so many ministers, what big move do you have this time?"
Li Yu said: "It is a kind of radio equipment. I think Beiyang will be interested in it."
"Radio?" Tang Shaoyi had never heard of this name.
Li Yu said: "It is a device that can transmit messages without the need for telegraph lines."
"Oh?!" Tang Shaoyi exclaimed in surprise, "There is such a magical thing?"
Li Yu said: "This is the power of science."
Tang Shaoyi praised: "I really saw you right."
Li Yu added: "If Tang Daotai is interested in it later, he can directly take one to Beiyang for trial use."
Tang Shaoyi said: "Then I owe you another favor."
Li Yu said: "I also owe a favor to Mr. Tang Daotai."
Tang Shaoyi asked: "Do you owe me?"
Li Yu already knew from De Ling that Tang Shaoyi had saved him from the haircut incident. He pointed at his hair and said, "This."
Tang Shaoyi smiled and said: "So you already know it. It's a trivial matter, nothing to worry about."
"This can't be done," Li Yu said, "and the radio device is indeed very useful, not only in daily life, but also in the military. Daotai will know when the time comes."
The telegraph actually played a big role in the wars of the late Qing Dynasty. This thing was much faster than the 800-mile express.
Tang Shaoyi said seriously: "I understand."
Li Yu whispered to him: "Tang Daotai, we will act according to the opportunity in a while."
Before Tang Shaoyi had time to ask what was going on, the waiter from the Six Kingdoms Hotel came over and said, "Your Majesty, the people are almost here, you can start."
Li Yu walked into the hall, and ministers or representatives from various countries were already sitting below.
He laid out the radio device and began to explain its function:
"Everyone must know the telegraph and use it to communicate with the country. A year ago, the telegraph line was just laid on the Pacific Ocean, but the equipment in front of you can break away from the shackles of the telegraph line and can send and receive information anytime and anywhere."
This function of "sending and receiving information anytime and anywhere" is almost a killer function for ministers stationed abroad. Upon hearing Li Yu's words, many people could not sit still:
"Can it reach Europe?"
The person who asked the question was the British Minister Sir John Sudworth.
Li Yu said: "If we can build a few base stations in the middle, it will be no problem."
There is no shortage of colonies in the UK now. Sir Sadoyi thought it was interesting when he heard it, "If this is true, I will be extremely interested in purchasing them."
Li Yu said: "Mr. Morgan in the United States has used it in Europe to receive news from the United States."
"You rely on the equipment that you don't have telegraph wires in your hands?" Japanese Minister Uchida Yasuya asked.
Li Yu said: "That's right."
Uchida Yasuya asked again eagerly: "If it is from Japan to Beijing, can it also be used to contact Beijing?"
Li Yu replied: "Yes."
"吆西!" Uchida Yasuya couldn't help but stood up and looked at the radio equipment in Li Yu's hand, "Great!"
Li Yu also demonstrated to them how this set of equipment transmits and receives, and it already has preliminary mobile radio functions.
Uchida Yasuya didn't wait for Li Yu to finish the demonstration and said, "I want to buy it! How much does it cost? Please give me a price."
British Minister Sa Daoyi said: "Mr. Li Yu hasn't finished the demonstration yet. Minister Uchida must be a little anxious."
Uchida Yasuya knew that this thing was not easy to manufacture, and the technical content was there. It was basically the communication ceiling of the early 20th century.
The key point is that Japan's current embassy in China also plays the role of an intelligence agency. Uchida Yasuya himself has close contacts with Kawashima Naniwa of the Black Dragon Society and Japan's first-generation spy leader Nobujun Aoki.
They often need to contact their domestic base camp and have very high demands for communication.
Li Yu actually grasped their thoughts, and his target today was the Japanese people.
Li Yu is not afraid of selling to them at all, because unlike wired telegraphy, signal modulation is very difficult and there are considerable technical barriers. Every piece of special equipment will have a special coding system given by Li Yu. Within many years
None of them will break this technology.
Although it seems very simple in later generations, it is currently a typical information gap and dimensionality reduction attack.
Even if they can do encryption in just a few years, they will be able to produce cryptography talent by then.
Li Yu only needs to have a special receiving device to know the Japanese Xiao Jiujiu without anyone noticing.
Damn it! You have to use some cheating methods to trick them, otherwise you have studied science and engineering for so many years in vain.
Japanese Minister Uchida Yasuya said: "You don't need to listen to the end, I have already done some research, sir, just give me the price."
Uchida's approach aroused dissatisfaction with other ministers, but Uchida insisted on doing so because for Japan, the need for intelligence is becoming more and more urgent.
Seeing that he insisted on this, Li Yu had no choice but to say: "The cost of manufacturing and transportation is very high, and the current output is very low. There is only one unit at the moment, and it costs 2,000 silver dollars."
This was a high price, much more than the original payment to Rockefeller, but it was justified because this system could send messages, not just receive them.
British Minister Sa Daoyi said first: "I want it."
The British's desire to control the colonies was also not low.
Uchida Yasuya said dissatisfied: "I asked about the price first."
Sa Daoyi spread his hands: "Everyone present can buy it."
Uchida Yasuya said: "Then I will add 500 silver dollars."
Sa Daoyi smiled and said: "Minister Uchida, is it an auction? It's interesting. I will accompany you and add 500 silver dollars."
Their thoughts were the same as those of Rockefeller and others at that time. They had the reason to get it as soon as possible and would not care about the premium of several hundred silver dollars.
Uchida Yasuya raised his hand: "Continue to add 500 silver dollars."
Li Yu looked a little funny, but he didn't expect them to start fighting.
Some of the hunger marketing strategies I personally saw back then were not to mention really useful.
Tang Shaoyi in the back was holding a cigar and taking some time to watch the excitement.
Sa Daoyi got angry: "I'll add 500 more!"
These people only have 500 silver dollars each, which is quite wealthy.
Uchida Yasuya said: "Stop fighting, I will pay you 8,000 silver dollars!"
The price has already quadrupled. Sa Daoyi had participated in the auction before and was reluctant to increase the price because Uchida in front of him was like a gambler. Besides, Britain and Japan were now in an alliance and they didn't want to push him too hastily.
Uchida Yasuya finally breathed a sigh of relief when no one responded. It was over budget, but he was willing to do his best for the cause of the Empire of Japan.
Unexpectedly, Tang Shaoyi took a puff of his cigar at this time, raised his hand and said, "I will add 1,000 silver dollars."
Uchida Yasuya almost vomited blood, who is he?
He gritted his teeth, knowing that the current situation between Japan and Russia was already very tense and could not be delayed, so he said bitterly: "I will add another 3,000 silver dollars. Does anyone want to add more?"
Tang Shaoyi puffed out smoke leisurely: "Mr. Uchida, please."
The original price of 2,000 was raised to 12,000.
Even if Uchida Yasuya feels that something is wrong and a bit of a loss, he can only accept it.
Li Yu smiled and said: "Congratulations to Minister Uchida."
Uchida said: "Please show me how to operate it again."
A set of radio equipment has two pieces of equipment, mainly the installation of the radio station and signal modulation. Li Yu explained it to him again, and then said: "There is also an instruction manual. If you study it carefully, you will be able to master it in a short time.
"
Uchida Yasuya listened very carefully and carefully picked up all the things before leaving.
Unexpectedly, when Li Yu went out and was about to leave, the Russian Minister Resal hurriedly came to him: "Your Excellency, I'm sorry, I just arrived."
The Russian minister was not present just now, but a counselor from the legation came. After seeing the Japanese buying it, he quickly went back and told the Russian minister himself.
The minister learned about the price from the counselor, so he said: "Can I also order the same equipment at the same price?"
Li Yu pretended to be embarrassed: "Yes, yes, but the delivery time needs to wait."
The Russian envoy said: "I can add additional funds, as long as His Excellency the Imperial Master can provide us."
Li Yu paused for a while before saying, "Okay."
The Russian envoy said happily: "Thank you, Your Majesty the Emperor!"
Li Yu just had to give these powers a little sweetness, making them think that they could buy good advanced equipment and protect themselves. Otherwise, if they were too hidden, I really don't know what extreme things the Japanese would do.
After all, now that the Japanese are targeting us, we must adopt some strategy.
The best way is to rely on brains and information differences to control the opponent first.
However, it should be said that I don't feel any guilt at all for being a "profiteer" in front of these people.
But Li Yuding's 2,000 silver dollars was actually quite reasonable given the lack of production capacity, and the subsequent price was something they were willing to increase.
Who told them to hide so much dark greed in their hearts?