[131] DQS1140 covering the whole world

Xiaoqiang promised Secretary Yang to come down. After leaving Secretary Yang's office, he immediately called the driver Liu Zhen to get out of the car and went straight to the Central People's Radio.

In 1950, the Central People's Radio Station was located in a three-story cement-brick concrete building at No. 2 Fuxingmenwai Street, with simple facilities, and Director Li Qiang's office had two wooden tables, and the yellowed walls against which the wooden tables rested had not yet had time to be painted. He warmly received Xiaoqiang here.

listened to Xiaoqiang's MP3, and only the first song attracted him. Director Li slapped his thigh after listening:

"Nice! I understand that Secretary Yang means that we want us to broadcast these excellent literary and artistic works on Chinese New Year's Eve, and I am very optimistic about it, and this matter will be done now.

Xiaoqiang, your song box is very magical, what is this called? How can I put on my own songs? Don't use records? ”

Xiao Qiang smiled and said: "This is a confidential device, don't ask, besides, you can't say it to the outside world in the future if you see it now." ”

Director Li nodded solemnly, obviously shocked by this MP3 that could be seen everywhere in later generations.

Xiaoqiang's purchase of an advanced broadcasting system came in handy this time, the radio transmission device in this system is not expensive, the equipment cost is only 400,000 yuan, but it can only be bought with the approval of Wenguang, Xiaoqiang from the Ministry of National Defense to engage in a self-proclaimed export.

This equipment is the DQS1140 of Shanghai INESHA, and the Oriental Pearl in Lujiazui is equipped with this thing, covering all frequencies in the world, which can transmit all bands, from AM to FM, and is divided into three frequency bands: short-wave, microwave, and long-wave.

In 2011, such devices were collectively referred to as short-wave wireless transmitters, because the real long-wave was not made public in China, and it was for the military. The civilian bands are considered shortwave internationally.

Short-wave emission pays attention to the higher the emission height, the better, and long-wave, as long as the ionosphere is stable, ironclad Shijie can be heard. Besides, even if the ionosphere is unstable, I am not afraid, and there are ground waves, relying on ground waves, they can still spread through the mountains and mountains throughout Asia and even all Shijie. Xiao Qiang pondered that if this thing was used to broadcast the voice of China to imperialist countries, it would be very good.

The good thing about this set DQS1140 of things is that it is an analog jishu, which uses two reeds to cut off the military long-wave channel, because the radio equipment is modulated by resistivity changes, which avoids occupying the military channel. In 1950, as long as the reeds were removed directly, this set of equipment could be used to transmit military radio communication signals to the whole country. Of course, it is also very haode to shout at the imperialist countries with a long wave. If you purchase a digital machine, it will be troublesome, and the frequency band will be burned directly on the integrated circuit, and it cannot be changed.

Shanghai INESA also has an advantage of this equipment, the transmission height requirements are not high, as long as there is a 150 meters is enough, the original old tower of the Central People's Radio Station is on the Yuquan Mountain in the northern capital, the height is definitely enough, the people of the whole country can hear the voice of the chairman transmitted here during the founding ceremony.

Xiaoqiang planned to build a set of equipment for the Central People's Radio Station first, and then install this equipment at the relay stations in all regions of the country, which would be equivalent to popularizing excellent radio signals throughout the country in advance. In the rural areas, don't engage in any cable broadcasting, what does it feel like to listen to the loudspeakers, everyone goes home and sets up a radio, and listens to whatever channel you want. At that time, the radio signal was too weak, and the mountainous and remote villages relied on cable broadcasting, and it was not until 1987 that the whole country completely bid farewell to the era of cable broadcasting. Achieve full coverage of the qualified power of the radio signal.

In addition to the transmitter, the remaining part of the system is the broadcast control system, which is composed of two parts:

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

Then the back-end is the cataloging system, which is very simple, it is recording and signal conversion, in fact, it is a large-scale amplifier, which converts all sound signals into radio signals.

At the beginning, this set of broadcast control devices made Xiaoqiang very annoyed, why? You see, this main computer has CD interfaces, DVD interfaces, tape interfaces, USB interfaces, and even VHS video tape interfaces, but there is no interface for old records............ In other words, it takes a lot of effort to make the girl go through and only broadcast the speech!

Fortunately...... What do you mean by that? God can't starve to death! Xiaoqiang hurriedly called the company to find a senior engineer, and was stunned to add an additional vinyl record system.

Considering that the turntable did not have an output interface, the engineer directly modified an imported high-grade vinyl player for radio DJs and connected it. This machine is quite high-end, it is a vinyl record player played by hardcore audiophiles, from 10-inch 12-inch vinyl discs to 33 and one-third turns, 45 rpm, 78 rpm vinyl discs can be played very delicate and feverish. Good guys, in order to integrate the sound acquisition and signal output of this record player into the original broadcast control system, this external engineer has worked a lot, Zuihou even the price of this set of imported high-end vinyl record players is 250,000 plus labor fees of 50,000, a total of 300,000 Xiaoqiang was charged.

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

The 2011 thing is really easy to install, just like a household appliance, basically it can be used when installed, and the comrades in 1950 worked hard for two days to install the radio transmitter on the transmission tower of the old Beidu radio station on Yuquan Mountain. Before the end of the construction of the computer room, the equipment was first placed in a private house on Yuquan Mountain, and the emergency construction treatment of dust and anti-static was done as much as possible. After the wires of the equipment and the radio station were connected, a test piece of test music and a time signal speech were sent on the long-wave channel on the same day.

The reason why it can transmit long waves is because Xiaoqiang's labor fees are not in vain - the engineer in 2011 helped Xiaoqiang remove the DQS1140 resistance reed, and they told him that this was because I took it out considering that your equipment was used for export, but don't find me if something happens, Xiaoqiang gave the engineer 120 guarantees at that time.

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

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

After listening with his ears pricked up, Director Li said, "It turns out that ...... The sound can be reproduced so perfectly by radio! And the music, it sounds like it's there. ”

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

The Central Radio then contacted the receiving points in each city by telephone and radio transmission, and each receiving point indicated that the reception quality was extremely good. In the five levels of acceptance evaluation, which is excellent and has no difference, all are given excellent.

Puhai's comrades were verbose on the phone, and first asked why it sounded a bit like the Yellow River chorus? Then I was curious about the work, I was curious about the equipment, I was curious about everything, I asked this and that. Of course, the comrades of the Central People's Radio strictly abide by the principle of secrecy and say nothing. Comrade Zuihou Puhai People's Radio listener directly gave a comment: "Incomparable!" ”

And the comrades in Guangzhou called back, saying, "Unprecedented! Fabulous! Fabulous! Fabulous! "Worked three excellently!

Chongqing's radio station was even more outstanding, sending a telegram saying: "Beyond imagination! The sound quality is almost heavenly, and the mountain city has seen the real sound for the first time in ten years! ”

And the people of Changsha shouted with a hot temperament and asked: "What kind of equipment is this sending?" Power geometry? Why do you not lose anything through the mountains? Can you consider giving a first aid? ”

These constant callbacks from all over the country surprised Xiaoqiang, this signal is too good! Then he immediately figured it out. In these years, there are no high-rise buildings, there are no dense transmission lines and towers, and there are no electromagnetic waves and radiation sources of various electrical appliances in the city, plus who has a radio in China in this year is extremely precious, in order to improve the quality of listening, there is no one who is not connected to a high I-beam receiving antenna outdoors, and the listening quality will of course be excellent. Of course, the equipment of INESA in 2011 is really bullish, which is the most critical.

You must know that if the power of the radio transmitter exceeds 100KW, it can cover the whole world, and it can ensure global listening after 3 pm every day. If the power of a single machine exceeds 200KW, it can ensure all-weather coverage. This set of INESA equipment is the output power of 200KW.

Being harmed by Xiaoqiang, the secrecy level of the Central People's Radio Station suddenly rose to a higher level, all the equipment was strictly numbered, without the approval of the station director, not a microphone or a connection cable was taken out of the broadcast studio, and all the people in the station who had access to the equipment swore an oath to the confidentiality code and signed a confidentiality letter. The launch pad and engine room on Yuquan Mountain have also become important places guarded by the garrison, and it is forbidden for unrelated people to approach.

Director Li held Xiao Qiang's hand and said: "Xiao Qiang, this set of equipment is so good, it's really good, you see, I won't beat around the bush, I have a cheeky request here, can I give a few more sets?" ”

Xiao Qiang shook Director Li's hand and hurriedly said, "Don't worry, there will be bread and milk, you make a list for me, and I will solve the most urgent needs for you first." After all, this kind of equipment is high-tech, and if it is stolen by the enemy, the consequences will be very serious, besides, this is an electric tiger, and the power supply in some parts of the country is a problem, 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 up and running, this first step is preliminarily completed. ”

Director Li Qiang was very happy: "Good, good, good!" Great, I think that's it. ”

In the past few days, Xiaoqiang has been busy training radio directors to use computers in the radio station, and he did not dare to say that this is called a computer, in accordance with the spirit of the resolution at the meeting of the Central 491 Project Leading Group, in the future, the computer will be called a "controller", and the Central People's Radio Station is naturally called a "broadcast controller", this name is very strange, at first glance people will think that it is an electric gate knife, a valve or some other mechanical gadget, which should be somewhat useful for confusing the enemy.

Referring to the standards of later generations, the 491 working group slightly reduced the difficulty, compiled the Jishu standard for wireless broadcasting transmitters, and made guiding explanations for the construction standards of computer rooms and other software and hardware indicators.

After a few days of such busyness, it is almost Chinese New Year's Eve, and the Central People's Radio has been broadcasting to the whole country in the past few days, reminding the people of the whole country to pay attention to the fact that on the night of Chinese New Year's Eve, the Central People's Radio will broadcast a Spring Festival Gala, hoping that everyone will listen to it then, I believe it will give everyone a surprise and accompany the national audience to spend an unforgettable Chinese New Year's Eve.