"How far can such a small device travel? Lao Peng, could it be the distance from the front yard to the back yard?! Mao Geng stroked the two treasures, of course he didn't want what he said to be true, but after all, he was full of doubts, so he was joking and worried.

"The first successful test was really from the front yard to the back yard, however, the farther test was also done, the 1o km transmission test was not bad, and the farther transmission test, I am going to Sakhalin to do it again. Hehe, in Lin'an, I did all the tests secretly. ”

"Lao Peng, no matter how you engage in underground research, someone has to cooperate with you to do the collection test, hehe, Lao Peng, who cooperated with you? I heard that you took in a concubine, why didn't you bring it to Sakhalin! Mao Geng noticed that there were two girls who looked like girls on the boat with Lao Peng, one of them looked a little good, and when asked at the time, Peng Qinfang only said that it was a maid.

"Oh, look at what you say! Wen Yuan gave me a girl, but it's a pity that the child is too small, hehe, it's still a fifteen-year-old Lori, too small, too small! Oh, don't talk about this, I'm looking for a maid to help, I just told her to press the button regularly, and I didn't tell her what it was. Of course, just to be on the safe side, I brought her over this time, and she was on board at the moment. Hey! This is to ensure that there are no leaks. "This time I went to Sakhalin, Peng Qinfang originally planned to only take this maid there, this is for the sake of secrecy, I didn't expect to take that "little concubine" there, but Wen Yuan didn't care about thirty-seven twenty-one, he was stunned to bring someone else, bring it with you, old Peng Xindao, in fact, I don't have much interest in Lori.

Mao Geng knew that Lao Peng was more conservative, put away the gossip heart, and returned to the topic:

"Lao Peng, do you estimate that the transmission distance of 5o kilometers can be successful?" Mao Geng thought to himself, if there is a transmission distance of 5o kilometers, it can basically be put into practice, and when the distance is long, you might as well use the relay method.

Peng Qinfang said in his heart that this is not underestimating me, although Peng Qinfang is low-key and responsible, he is also arrogant, and his voice is instinctively louder:

"Maote, you don't know much about the history of radio, it's like this, in 19o4, the Russians' spark radio and ore geophone receivers, the transmission distance reached almost 1,000 kilometers, and the technology of the Russians is at the same level as the technology in front of you, so to speak. In the same year, in 19o4, the world's first electron tube was born, which was Fry's, but, let me tell you, although his electron diode worked very well in the real room, it was very unsuccessful in actual use in geophones, and it was not as good as ore geophones! In the Russo-Japanese War of 19o4, the fleets of both sides were equipped with spark transmitters and ore geophone receivers. Technically, I studied the theory at the end of the 2o century, which should be stronger than the Russians and the Japanese in 19o4, not to mention the transmission distance of 1,000 kilometers, there should be no problem with the transmission distance of 3500 kilometers. ”

"Oh, old Peng, don't get me wrong! Isn't it true that I don't understand! I thought the radio had to wait until the tube came out to be able to transmit over long distances! Lonely and unheard, pure lonely and unheard! ”

"The earliest radio geophone was a powder geophone, also known as a condensation geophone, Marconi shocked the world with transoceanic wireless telegraphy in 19o1, 35oo kilometers across the Atlantic, wireless telegraphy was successfully received, and the geophone he used was this primitive powder geophone. Later, someone understood the ore geophone, the ore geophone technology is already an upgraded version of the technology, the ore geophone technology at that time in 19o4 should not be very mature, should not have used galena, red zinc such advanced materials, ore geophones matured, has been used until the 2O century 2O years. After the ore geophone is the tube geophone, there is an electron tube transistor, which is of course different, with high sensitivity and does not require much power to realize the long-distance transmission and reception of radio signals. As soon as an electric spark telegraph is discharged, it is casually an instantaneous power of hundreds of watts or kilowatts, and later electron tubes, transistors and wireless telegraphs, the general telegraph is 5 watts and 15 watts, which is really incomparable. ”

Everyone has a good side of being a teacher, and Peng Qinfang is no exception. Now Lao Peng has entered the role, at this moment in Lao Peng's eyes, Mao Geng's eyes on the other side feel like a primary school student's hunger and thirst, so Lao Peng has the urge to be a good teacher and continues to popularize science:

"In the 40s, our party's radio station in Hong Kong only had a power of 5 watts, and it was still a patchwork thing, and some measures were taken, such as raising the antenna, and Yan'an, 17oo kilometers away, was not still telegraphed! Of course, wireless communication technology in the 21st century is not to mention. ”

Mao Geng smiled, feeling a little silly laughing. I really don't know anything about the history of radio. It turns out that radio is not a high-tech thing, and it can be played in a very earthy way.

"Far away, far away! Don't worry, Maut, radio will work without tubes. I'll tinker with it again, and the transmission distance of three or five hundred kilometers shouldn't be a big problem. ”

"That's good! I knew that Lao Peng was a doer, and he quietly solved a big problem for us. Mao Geng immediately thought, after Lao Peng has made such a great achievement, he should always be rewarded, it seems that Lao Peng doesn't like to give birth to an incomplete Lori, it seems that Cai Jianwen has to help find a woman, right! After Cai Jianwen and Wen Yuan's trip to Goryeo this time is over, it will be done immediately.

Next, Mao Geng wanted to see the radio demonstration, but the battery that Lao Peng brought was out of power, so he had to give up. On second thought, even if the test is successful on board, it is only the distance between the bow and stern, which does not reflect the performance at all. Since Marconi was able to handle long-distance wireless communication of more than 3ooo kilometers with backward technology in real history, Lao Peng is still an upgraded version of technology, and he can handle wireless communication for 3500 kilometers.

said that Wen Yuan, Cai Jianwen and his party had already arrived in Goryeo at this time. Wen Yuan, Cai Jianwen and his entourage set off with the Goryeo mission, and arrived at the royal city of Goryeo in a short time.

As mentioned above, the ceremony of the Sado Special Region also invited Goryeo envoys, and the envoy of Goryeo is called Li Zhichun, Li Zhichun himself is a military general, known as both civil and military, of course, the most important thing is that he has a powerful father. His father is Li Yimin, Li Yimin is currently the post of the military ministry under the Goryeo Tongzhongshu Menxia Pingzhang, which can be regarded as the prime minister and privy envoy of Goryeo Myeongjong, and now it is the time for the Goryeo military generals to be in power, since the military generals began to dictate in 117o, the government of Goryeo has basically nothing to do with the ministers, and even the king of Goryeo has become a puppet. Therefore, the current Goryeo government is basically Li Yimin's final say.

Originally, Li Yimin was in power, and his life was very nourishing, but since last year, pirates have been roaming along the coast of Goryeo to commit crimes, in addition to robbing property, they have also taken away a lot of people, and even many ships have been robbed by pirates, which has caused the Goryeo government and the opposition to complain for a while.

Later, it was rumored that the prince of Liao was involved in a gang of brutal pirates, and thankfully, the main target was not Goryeo but Japan. Of course, those evil pirates did not pay attention to strategy at all, and even engaged in indiscriminate robbery, and even the Great Song Dynasty and the Jin Empire were poisoned by them. Later, the Great Song Dynasty sent a large number of warships to Japan, claiming to have exterminated the Khitan pirates.

However, pirate robberies still occur from time to time along the coast of Goryeo, and although they are not as frequent as before, they are still as fierce as ever, and the warships of Goryeo cannot stop them at all. For this reason, when Japan invited Goryeo to send envoys to attend the ceremony of the Sado Special Zone, Li Yimin immediately decided to send people there, and it was inconvenient for Goryeo to have official relations with the Great Song Dynasty, but there was no taboo with Japan, so he took this opportunity to learn about the situation of piracy, and by the way, to test whether it was possible to set up an international anti-piracy alliance or something.

After I went, there was a response, no! came a businessman Cai Jianwen, it is said that this person has a very background in the Great Song Dynasty, needless to say, it should be the Great Song Dynasty playing merchant diplomacy again. As for the novel god Wen Yuan, I don't need to ask, I should have come to Goryeo to brush up on international prestige, but the hateful thing is that a group of Goryeo stinky literati are crazy about it, it's really unreasonable, although I Li also like this Wen Yuan's novel, but the novel is just a small road, just watch it, as for being fascinated by it!

Li Zhichun has just told what he learned this time, and he didn't expect that there were descendants of the former Tamna among the pirates entangled by the Khitan prince, according to the Song people, it should be one of the gangs who robbed Goryeo.

Of course, this story is made up, this is made up by Wen Yuan, as a qualified novel writer, making up stories is the basic element, and Wen Yuan's stories are made up. In this version of the story, a certain descendant of the Fu family, King of Tamna Zijian, was determined to restore the country, so he and the descendants of the Khitan Yelu family formed a pirate team, but the group of pirates of the descendants of the Fu family was slightly smaller, and they still had to listen to the king of Yelu on the surface, so most of the time they had to follow the big pirate team to mainly plague Japan, and only visited Goryeo when they had their spare time.

Later, the group of pirates of the Fu family heard that the Great Song Dynasty was going to rectify the king of Yelu, and Fu someone, who was well versed in the method of seeing the wind and making the rudder, immediately parted ways with the king of Yelu, and the king of Yelu was subsequently exterminated, but the pirates of Fumen were basically unharmed.

Wen Yuan also revealed some gossip, such as the legend that this surnamed Fu also had a relationship with Han Yanxuan, a popular figure in the Great Song Dynasty, and may even have gone through the door of the imperial court, so the Great Song Dynasty may not take action against them, and Fu someone is very active, and it is said that the Great Song courtiers who sympathize with Tamna's suffering have already made a voice that should help the Fu family restore the country.

This story is quite round, at least Li Yimin heard it, and sighed in his heart at that time: No wonder he is bent on harming Goryeo! Needless to say, the hatred of the Tamna Fu family towards Goryeo is! But Da Song, how can you allow or even support such terrorists! It's so unprincipled.

It seems that you can't count on international support, in today's world, 6 is naturally the first of the Jin Empire, but the sea strength of the Jin Kingdom and the Great Song Dynasty are not next to each other, the Khitan Yelu King pirates can easily crush the Jin State Sailors, and the Great Song Dynasty can completely destroy the Yelu King, so the Jin people can't provide help in the matter of pirates at all. It seems that you still have to rely on yourself.

"Rong'er, my father asked you to imitate meteor bullets, has there been any progress recently?" Li Yimin asked his other son, Li Zhirong, and Li Yimin felt that as long as he could create a meteor bullet, with this new weapon, he could also kill the majesty of pirates.

"So that my father will know that some time ago, I paid a lot of money to invite gold craftsmen, and I have made quite a lot of progress, and I expect that the meteor bomb will be made in a few days." In fact, Li Zhirong is a little bragging, even if he invited the craftsmen of the Jin Kingdom, the things made are still not very good, he doesn't know, just the gunpowder formula, the gap is obvious, although the craftsmen of the Jin Kingdom inherited the gunpowder technology of the Northern Song Dynasty, but the gunpowder technology of the Northern Song Dynasty is actually far from reaching the best ratio of Mao's technology, of course, it is impossible to give force

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