Autumn is crisp, cool breeze, Lin Ruofeng sat in the pavilion and took out two mobile phones, Sumeru Divine Ring, divided into two spaces, one is time static, the other is time dynamic, before crossing Lin Ruofeng put the mobile phone into the time static space, maybe because of some changes, the guide zhì still space can not be opened for a while, until after entering the secret realm, the still space is finally opened, Lin Ruofeng is very regretful, he has not been able to take a photo with Xiao Yaling before, so that even nostalgia is not so clear. Today, Lin Ruofeng took out his mobile phone, mainly to try to see if he could use his mobile phone to communicate without satellite transmission. Lin Ruofeng used to study tank communications, and he had systematically learned the communication principles of radio and walkie-talkies, and the electronic components of mobile phones were very complete, as long as he slightly changed the target accessories for frequency transmission and increased the accessories for receiving frequency. Thinking of doing it has always been the advantage of Lin Ruofeng after becoming a soldier, although there is a lack of tools, but by chance in recent years, Lin Ruofeng has discovered an alloy that has never been seen in his previous life, which is especially suitable for transmitting and receiving frequencies, and I believe that there will be more ideal results after the transformation is completed. It is a pity that there are no satellites in this world, and if there are satellites, they can have a communication distance of tens of thousands or even hundreds of thousands of kilometers at will.

It took three days for Lin Ruofeng to finally transform the two mobile phones successfully, imitating the walkie-talkie to set 9 bands for the mobile phone, Lin Ruofeng called Chen Gu and said to him: "General Chen, I want to give you a task, but you must promise not to disclose the relevant information of this mission to anyone." ”

Chen Gu was a little confused, but he still said firmly: "Guarantee to complete the task!" Lin Ruofeng smiled, he didn't expect Chen Gu to learn so quickly. Lin Ruofeng took out his mobile phone, taught Chen Gu how to use it, and demonstrated it to Chen Gu on the spot, Chen Gu was very calm on the surface, but he was very shocked in his heart. Lin Ruofeng didn't say much, just asked Chen Gu to bring a spare battery, and asked his cavalry to go south from the capital, mainly to try the maximum communication distance of this "walkie-talkie", and told him to keep moving at full speed, the average horse speed in this world is a thousand miles a day, that is, 400 kilometers, the previous unit of measurement in the Song Dynasty 1 li =400 meters, instead of 500 meters after the Song Dynasty, that is, 8 hours a day to ride a horse, 50km per hour, and the average good horse can reach 2,000 miles a day, a speed of 100km per hour (a little scary), a red rabbit good horse 3000 miles a day, 10 hours, a speed of 120km per hour, sweat BMW, 4000 miles a day, 10 hours, a speed of 160km per hour, of course, the speed of the Pegasus is much faster when flying, but the durability is not good but can not run far, and Lin Ruofeng's mount is the Pegasus King Gallop, a day of 10,000 miles, can continue to march for 20 hours, the average speed of 200km, if in the previous life, almost a day from Beijing to Hong Kong...... It's just that the wind has already recognized Lin Ruofeng as the master, and it is difficult for others to control it, so they have to let Chen Gu ride his Pegasus to measure the distance.

Five minutes later, Lin Ruofeng pressed the call button, considering the terrain and other factors, Chen Gu's marching speed should be 150km/h, that is, about 2.5km/min, five minutes should have reached 12.5km, the communication distance of the walkie-talkie is generally within more than ten kilometers, Lin Ruofeng is not sure whether his transformed "walkie-talkie" can have this communication distance.

"Chen Gu, I'm Lin Ruofeng, answer. ”

Chen Gu heard. ”

"Where are you now, over. ”

"I just left the inner city, and now I should be almost thirty miles away from His Highness, this thing is amazing, over. ”

"Okay, you try to keep the speed as constant as possible, and walk in a straight line, so I can calculate the distance in a straight line, and that's it. ”

Chen Gu understood. ”

"Five minutes later, the call, there is time in the upper right corner of the phone, just follow the Arabic numerals I taught you, and the minutes behind the signal, over. ”

"The subordinates saw it, it's over. ”

"Go ahead, execute. ”

Five minutes later......

"Chen Gu, I'm Lin Ruofeng, answer. ”

Chen Gu heard. ”

"Okay, move on, execute. ”

Lin Ruofeng was overjoyed, although it was impossible for Chen Gu to walk in a straight line, the communication distance was definitely more than 20 kilometers.

Five minutes later......

Half an hour later, Lin Ruofeng had turned his joy into numbness, and this communication distance had even surpassed the world's most advanced tank radio station. 70 km, the radio station on the third generation tank is generally about 30 km communication distance. Chen Gu had also gone out of the city gate, but in order to test the maximum communication distance of the "walkie-talkie", Lin Ruofeng still asked him to continue south.

An hour later......

Two hours later......

Three hours later......

Four hours later......

600 kilometers, Lin Ruofeng is speechless, this alloy is too against the sky, he as an amateur can make a "walkie-talkie" that can communicate 600 kilometers without using satellites, even if the most advanced communication equipment in the previous life could not have this effect without the guidance of satellites!

After eating, Chen Gu continued to go south without stopping.

"Chen Gu, I'm Lin Ruofeng, answer"

"Chen Gu heard"

"Where have you been, done"

"The subordinates have passed through Suzhou, finished"

Lin Ruofeng opened the map, measured it, the straight-line distance was 3200km, Lin Ruofeng was ecstatic in his heart, with this, are you still afraid of inconvenient communication? However, the communication effect here is not very clear, and it often has to be repeated several times to hear, the best communication distance of this "walkie-talkie" should be about 3000km, Chen Gu also ran for two days and two nights in a row, Lin Ruofeng told him to rest for another night and then return to the capital.

During the three days of making the "walkie-talkie" and the two days and two nights of testing the communication distance, Lin Ruofeng was also very mentally exhausted, and he didn't go back to sleep for five days and five nights, and Ye Yuxian didn't even ask, which made Lin Ruofeng feel very uncomfortable, how can this still have the taste of "home"!

Lin Ruofeng returned to the East Palace and stopped the guards' greetings, Lin Ruofeng was very sleepy now, and went straight back to the bedroom. Lin Ruofeng was a little confused in his heart, but he walked to the bathroom as soon as he walked to the bathroom, Lin Ruofeng didn't care when he saw that he had gone to the wrong door, he just hadn't taken a bath for five days, so it was good to take a bath first and then go to bed. Lin Ruofeng pushed open the door, but saw that the screen was full of girls' clothes, and heard bursts of laughter from the bathroom, Lin Ruofeng felt like a cat scratched, because judging from the clothes and voice, it must be his wife and Qing'er girl inside, Lin Ruofeng hesitated, but still didn't dare to step forward. In fact, Lin Ruofeng didn't know, with the keen intuition of the second-rate realm, Ye Yuxian had already noticed Lin Ruofeng's arrival at the moment when Lin Ruofeng pushed the door, and from the induction of the martial arts realm and Lin Ruofeng's breath, Ye Yuxian also judged that it was his husband, Ye Yuxian was very anxious, I didn't expect that I was sweating from practicing martial arts just now and wanted to take a shower and met this **, is it that I am destined to ** him today?

PS: Thank you very much for the reward of 100 starting coins for the book friendship maple remnant, and I am also very grateful to the book friend xunxunlu for the recommendation of 11 votes per day for six or seven consecutive days, and there are many friends who have been silently supporting the maple leaf, the maple leaf can be seen, thank you~