1949 I am from the future

()【131】Dqs1140 Xiaoqiang, who covers the whole world, agrees to Secretary Yang.After leaving Secretary Yang's office, he immediately called the driver Liu Zhen out of the car and went straight to Zhongyang People's Broadcasting Station.

In 1950, the Zhongyang People’s Broadcasting Station was located in a three-story cement and brick building at No. 2, Fuxingmenwai Street. The walls have not had time to paint.He warmly received Xiaoqiang here.

After listening to Xiaoqiang's mp3, only the first song attracted him.Master Li slapped his thigh after listening:

"Sounds good! I understand. Secretary Yang wants us to broadcast these excellent literary and artistic works on New Year's Eve. I am very optimistic about it. We should do it now.

Xiaoqiang, your song box is amazing. What is it called?How can I sing by myself?Don't use records? "

Xiaoqiang said with a sneer: "This is a confidential device, don't ask, and besides, you can't tell it to the outside world after you see it now."

Director Li nodded solemnly, obviously shocked by the mp3 that can be seen everywhere in later generations.

The advanced broadcasting system purchased by Xiaoqiang this time came in handy this time. The radio transmission device in this system is not expensive, and the cost of the equipment is only 40 yuan. The way to engage in a self-proclaimed export.

This device is the dqs1140 of Shanghai Instrument and Electronics, which is installed on the Oriental Pearl Tower in Lujiazui. It covers all frequencies in the world and can transmit in all bands, from am to fm. It is divided into three frequency bands: shortwave, microwave and longwave. Anyway, radio transmission It is enough for any country that the device is made like this.

In 2011, this type of equipment was collectively referred to as short-wave wireless transmitters, because the real long-wave is not disclosed in China, and it is used by the military.Civilian bands are considered shortwave internationally.

For short-wave transmissions, the higher the altitude, the better. For long-wave transmissions, as long as the ionosphere is stable, the whole world can definitely hear it.Besides, even if the ionosphere is unstable, there is still ground waves, relying on ground waves, they can still travel across mountains and ridges across Asia and even the whole world.Xiaoqiang thought, if this thing is used to broadcast the voice of China to imperialist countries, it would be very good.

Shanghai Instruments dqs1140 set is good because it is an analog machine technology. Two reeds are used to isolate the military long-wave channel. Since the radio equipment is tuned by resistivity changes, this avoids occupying the military channel. 1950 As long as it is directly disassembled to remove the reed, this set of equipment can be used to send military radio communication signals to the whole country.Of course, it is also very good to use Changbo to shout out to imperialist countries.It will be troublesome if you buy a digital machine, the frequency band is directly burned on the integrated circuit, and it cannot be changed.

The equipment of Shanghai Yidian has another advantage. It does not have high requirements for the height of the launch. As long as there is one 150 meters, it is enough. The original old tower of Zhongyang People's Broadcasting Station is on Yuquan Mountain in the northern capital. The height must be enough. The founding ceremony At that time, people all over the country heard the chairman's voice transmitted here.

This is Xiaoqiang's plan, first to build a set for the Zhongyang People's Broadcasting Station, and then install this equipment for relay stations in all regions of the country, which is equivalent to popularizing high-quality radio signals throughout the country in advance.Don’t engage in cable broadcasting in rural areas. How does it feel to listen to the loudspeaker? Everyone puts up a radio when they go home, and they can listen to whatever channel they want.In those days, the radio signal was too weak, and cable broadcasting was used in mountainous areas and remote rural areas. As far as the whole country was concerned, it was not until 1987 that the era of cable broadcasting was completely bid farewell.Full coverage up to the qualified power of the radio signal.

Except for the launching device, the rest of the system is the broadcast control system, which consists of two parts:

The front end is a program arrangement system, also called a multi-threaded broadcast control system, which links the phone, the host and the music, and can switch between the phone, music, and the host's speech.

Then the backend is the recording system, which is very simple. It is recording plus signal conversion. In fact, it is a large-scale playback system that converts all sound signals into radio signals.

Xiaoqiang was very annoyed by this broadcast control device at the beginning, why?Look, there are cd ports, dvd ports, tape ports, usb ports, and even vhs video tape ports on the main control computer table, but there are no ports for old records... In other words, it's only a matter of trying to get it all right. Can play speeches!

Fortunately... how do you say that?God can't starve to death blind house sparrow!Xiaoqiang quickly asked the company to find a senior engineer, and added an additional vinyl record system.

Considering that the record player has no output interface, the engineer directly modified an imported high-end vinyl disc player dedicated to radio DJs and connected it to it.This machine is quite high-end. It is a vinyl record player played by hardcore audiophiles. From 10-inch and 12-inch vinyl discs to 33 and one-third rpm, 45 rpm, and 78 rpm vinyl discs, it can play very delicately and feverishly.Good guy, in order to integrate all the sound collection and signal output of this record player into the original broadcast control system, this external engineer has spent a lot of effort, and finally even the price of this imported high-end vinyl record player is 25 plus The labor fee was 5, and Xiaoqiang received a total of 30.

Xiaoqiang bought a variety of high-end microphones and recording equipment, and then solemnly packed these equipment and this system in a container, and shipped it to 1950.

The things in 2011 are really easy to install, just like home appliances, basically they can be used after installation. In 1950, the comrades worked hard for two days to install the radio transmission device on the transmission tower of the old Beidu Radio Station on Yuquan Mountain. .The construction of the corresponding computer room under the launch tower has also started. Before the completion of the construction of the computer room, the equipment was first placed in a private house on Yuquan Mountain, and emergency construction treatment of dust and static electricity was done as much as possible.After the equipment and the wires of the broadcasting station were connected, a test music and a time-telling speech of Beijing time were sent on the long-wave channel on the same day.

The reason why the long wave can be sent is because Xiaoqiang’s labor costs are not in vain—the engineer in 2011 helped Xiaoqiang remove the resistance reed of the dqs1140. At the beginning, he was repeatedly instructed, saying that this is because your device is used for I just removed it at the exit, but don’t let me find anything wrong, Xiaoqiang gave the engineer 120 guarantees at that time.

The music was chosen by Xiaoqiang, the "Yellow River Piano Concerto" played by Kong Xiangdong.

This sound quality!At that time, everyone in the listening room of the radio station was shocked.

After listening to it with pricked ears, Master Li said: "It turns out...the sound can be reproduced so perfectly by radio! And the music sounds like being there."

Xiaoqiang smiled and said, "It's a pity that this radio is too ordinary, otherwise the sound quality would be better."

Then, Zhongyang Radio Station contacted the receiving points in each city by telephone and radio, and each receiving point indicated that the reception quality was extremely good.In the five-level acceptance rating of excellent, medium, and poor, all of them were given excellent.

The comrades in Puhai talked a lot on the phone, first asking why it sounds a bit like the Yellow River chorus?Then I am curious about the works, about the equipment, about everything, and ask questions about this and that.Of course, the comrades at the Zhongyang People's Broadcasting Station strictly abide by the principle of confidentiality, so they don't say anything.In the end, the reviewer comrades of Puhai People's Broadcasting Station directly gave a comment: "Incomparable!"

The people from Changsha shouted anxiously with fiery temperament and asked: "What kind of equipment is this sending? What is the power? Why can't we go through the mountains without loss? Can you consider helping one first?"

These repeated calls from all over the country surprised Xiaoqiang, and the signal was great!Then he figured it out immediately.There are no high-rise buildings these days, there are no dense transmission lines and iron towers, and there are no electromagnetic waves and radiation sources from various electrical appliances in the city. In addition, it is extremely precious for anyone in the country to have a radio these days. There is no one that does not have a high I-shaped receiving antenna connected to the outdoors, and the listening quality will of course be excellent.Of course, the equipment of INESA 2011 is really awesome, this is the most critical.

You know, a radio transmitter with a stand-alone power of more than 100kw can cover the whole world, and it can guarantee global listening after 3 pm every day.If the stand-alone power exceeds 200kw, it can guarantee all-weather coverage.This set of equipment from Shanghai Yidian has an output power of 200kw.

Being harmed by Xiaoqiang, the confidentiality level of Zhongyang People's Broadcasting Station has been raised to a new level. All equipment is strictly numbered. Without the approval of the director, it is impossible to take a microphone or a connecting cable out of the studio. All those who have access to the equipment here are sworn to the code of confidentiality and signed a confidentiality letter.And the launching platform and computer room on Yuquan Mountain have also become important places guarded by the garrison troops, and unrelated people are prohibited from approaching.

Director Li held Xiaoqiang's hand and said, "Xiaoqiang, this set of equipment is great, it's really great. You see, I don't know how to beat around the bush. I'm here to make a cheeky request. Can I give you more? How many sets?"

Xiaoqiang shook Master Li's hand, and said quickly: "Don't worry, there will be bread and milk, please make a list for me, and I will deal with the most urgently needed ones for you later. After all, this kind of equipment is high-tech. If the enemy steals it, the consequences will be very serious. Besides, this is an electric tiger. Some parts of the country have power supply problems, so it can't be used.

I suggest that you plan a few key relay stations first, as long as a few high-power relay stations are activated, the first step will be initially completed. "

Director Li Qiang was very happy: "Okay, okay, okay! That's great, I think that's the way to go."

In the past few days, Xiaoqiang has been busy training radio directors to use computers in the radio station. He didn't dare to call it a computer. According to the spirit of the resolution made at the meeting of the central yang491 project leading group, from now on all computers will be called "controllers." , The set of Zhongyang People’s Broadcasting Station is naturally called "Broadcast Controller". .

The 491 working group referred to the standards of later generations, slightly reduced the difficulty, compiled the technical standards of wireless broadcasting stations, and made guiding explanations for the construction standards of computer rooms and other software and hardware indicators.

I’ve been so busy for a few days, and it’s almost New Year’s Eve. The zhong yang People’s Broadcasting Station will have a couple of gala shows. I hope everyone will listen to it. I believe it will give you a surprise and accompany audiences across the country to spend an unforgettable New Year’s Eve. .