Liao Weihong went from Chunjiang to Fujian, almost non-stop, he went to Quanzhou, Fujian, the most famous radio minister in China to purchase a batch of electrical components, that is, wireless transmitters and receivers, these two things, are the most important things on the walkie-talkie.

Li Jian's idea, the part that attracted Duan Tongshan and Liao Weihong, was to use the equipment of the tape recorder factory to make the telephone, which should be different.

Even if it is stupid and stupid, it can still be sought-after, so it needs to have characteristics, and other manufacturers can't even imitate it in a short time, and even foreigners' factories can't think of it.

At that time, Liao Weihong was still a little skeptical, such a product could be designed by Li Jian, a high school student, and produced by a small enterprise with more than 30 people, Chenguang Tape Recorder Factory?

But as soon as Li Jian said his idea, Liao Weihong and Duan Tongshan, two people who knew technology, immediately burst into flames.

Li Jian actually wanted to integrate the telephone with the walkie-talkie to realize the dream of a cordless phone.

If he really does it, this is an opportunity to fill in his name in the history of the communications industry.

Therefore, Liao Weihong was afraid of being preempted by others, so he made this cordless phone one step ahead of them, and rushed to Quanzhou, Fujian Province, while Li Jian stayed and sorted out the circuit diagram of their new product.

But Liao Weihong didn't expect that he had been out for a few days, and Li Jian had already designed a complete cordless telephone circuit diagram, using electronic components that the tape recorder factory could currently buy, which is equivalent to that the obstacles to the design and production of cordless phones have basically been solved, and the rest is only some details of the beautification work.

The first factory meeting after the Chenguang Tape Recorder Factory was contracted, there were only a few participants, Li Hongjun, the nominal contractor, Li Jian, was completely supernumerary, Duan Tongshan, the original factory director, the current secretary of the Party branch of the Chenguang Tape Recorder Factory, Liao Weihong, the original technical section chief of the Tape Recorder Factory, and the current director of the Product R&D Center of the Chenguang Tape Recorder Factory.

"Our products are positioned in the high-end market, so it doesn't matter if the volume is larger, what we want is the heaviness of the product, so the body of the telephone can not be considered, the most important thing is that our cordless phone can not be controlled by the position of the telephone, according to the distance that the walkie-talkie can reach at present, this distance is about ten meters, that is, holding our microphone, you can leave the telephone ten meters away."

Li Jian coughed,

"In this way, you can answer important calls when you need to urinate, and you don't have to worry about peeing your pants."

Liao Weihong ignored Li Jian's strange tone, but focused on the details of the product.

"How much talk time can we achieve with our microphones, the analog signal used to transmit audio will definitely be disturbed by the external environment, what is the quality of the call, and what kind of power is used, is it a disposable dry battery or a rechargeable battery?"

"Of course, it's a rechargeable battery, and the nickel-cadmium battery is fully capable of withstanding this kind of audio call, and I've added a discharge function to the microphone, and 500 charges are no problem. As for the impact of the signal, there is no way to use the current analog signal transmission method, and we want to solve it, unless we use the digital signal transmission method, but that is what we need to consider after the three generations of products. ”

Li Jian explained, and saw that the others were listening to him like a book from heaven, and began to assign tasks.

"Secretary Duan, you are responsible for going to the Science and Technology Bureau to help us apply for a patent, remember that the patent owner must be me personally, please leave this matter to you, the domestic patent law has been promulgated, if you want our more than 30 people to be able to eat and clothe, we must do this, you also know that the brother units have a strong ability to study and imitate, and we are not high-tech technology."

Duan Tongshan pointed his big black face like a chicken pecking rice, and he had no opinion on Li Jian's taking this patent applicant as Li Jian's personal opinion, this was completely Li Jian's idea, not who he was, what he was worried about was Li Jian's words, more than 30 people were well fed and clothed, which was a big deal in Duan Tongshan's heart.

"Dad, the equipment of the paper mill is almost debugged, you go to contact the printing house, we produce our own paper, ten sheets for one, and let them print the manuscript I gave you."

"Ah, ten for one, it's too expensive!"

Li Hongjun was a little reluctant, didn't he just print something, as for exchanging ten pieces of paper for one, wouldn't it be good to pay directly, what a waste of money in such an exchange.

"Listen to me, Dad, we don't have any money now, so we can only solve it in this roundabout way."

"Director Liao, you, the director of the R&D department, can only take me to start production and debugging, at least assemble a prototype first, and see if there are any bugs, after all, design is design, and products are products."

"Okay, I've already assembled half of it according to your design drawing, and the power supply part of the microphone is left, I don't know what kind of battery you use, so I didn't get it."

Liao Weihong brought up a wooden box from behind, and everyone looked at it carefully, and it turned out to be the semi-finished product that Liao Weihong said.

Other people's phones are just a square box, the phone produced by Chenguang Factory, but it is the same as a small wooden box, everyone's eyes invariably fell on Li Jian's head, if this kid didn't get a cordless phone out, I'm afraid everyone will be deflated as soon as they see this semi-finished product, who has such a phone at home.

"This is a prototype, and I have reserved a lot of space for changes, and the product is really not so big."

After Liao Weihong moved the box to the table, she scratched her head a little embarrassedly,

"I tried it with a Mandarin microphone, there is basically no problem with the call function, and there is no problem with the dialing circuit, but the ringing circuit is a little flawed, and it should be able to be adjusted next time, the next step is mainly on the transmitter and receiver, the transmitter we bought is multi-channel, Xiao Li, is your consciousness multi-channel or single-channel? Since this is our first product, we can use a single channel, which will extend the battery life and also slightly extend the signal range. ”

"I'll get this done with you tonight."

Li Jian looked at the wooden box in front of him, which was far from the exquisite cordless phone he imagined, and he could only helplessly put that sigh into his mind.