People in their twenties today have the happiest time when they are young people watching TV at home.
But with the development of the times, watching TV has become a thing of the past, and now technology is more advanced, you can watch whatever you want, and it is no longer what programs were broadcast on TV at the beginning, you can only watch what programs.
So why did the "satellite pot" gradually disappear from the lives of the Chinese people, while European and American countries continue to use it?
AnnualApril 24thcalled"China Space Day".In 1970, China's first satellite, Dongfanghong 1, was successfully launched, the country has stepped into keeping up with the pace of the worldWe have entered the era of global communication
Year 2002Satellite TV receiver is Star Media GroupIt was developed because the main body is made of metal and forms a parabola, which is very similar to a cauldron, so it is also called by people"Satellite pot"., and the folk name is more"Antenna" and "cauldron".
A satellite pot is made ofIt consists of a parabolic antenna, a feed, a high-frequency head, and a satellite receiver
The principle of the satellite pot is that the parabolic antenna gathers the signal energy sent by the satellite, and then passes it into the feed, and the signal energy is collected by the feed, and then it is transmitted to the high-frequency head for physical frequency reduction and amplification of the signal, which makes people's TV clearer.
Finally, the relatively stable signal energy is transmitted into the satellite receiver, and the satellite signal after mediation can call up the image and sound of satellite TV on the TV.
At that time, the Star Media Group was in Guangdong Province, and after a series of publicity, it was gradually popularized in Guangdong Province, but it was not popularized because it was expensive.
Later, with the progress of the times, the price of satellite pots has also become very low, more popular, andIn 2003, the country has sent nearly 100 satellites, and the satellite signal is relatively stable
In 2005, the satellite pot has begun to have the function of digital signal reception, and the market price is onlyAbout 500 yuanIt can be said that every household can afford to buy a product.
At that time, the satellite pot was also upgraded, not only the equipment was more durable, but also the signal was more stable, and it also began to be popularized in China.
But why does the state ban the use of satellite pots, and what are the reasons for this?
Since the satellite pot is generally placed diagonally on the roof, it is more conducive to receiving satellite signals, there is no protection, and there will be no signal in windy days and rainy days.
And at that time, the larger the satellite pot, the more stable the signal, so the satellite pot installed by people was often large, but the larger the satellite pot also brought a greater threat to people's lives.
Since there is no way to fix the satellite pot, people are fixed with stones or ropes, and this method of fixing the satellite pot is not reliableIn case of windy weather, it will cause deviation, resulting in the inability to receive signals, and it will be blown away by strong winds, forming high-altitude falling objects.
When the angle of the satellite pot is offset, people need to adjust the angle of the satellite pot by themselves, because the satellite pot is generally on the roof, it is inevitable that there will be accidents, so that people's lives are harmed.
If the satellite pot is not fixed and blown away by the strong wind, and the satellite pot is connected with wires, the blown satellite pot will not only form a high-altitude falling object, which will pose a threat to people's lives, but also cause a short circuit and trip of the line at home.
Moreover, the broken wires may also cause disasters and bring great losses to the family
Even when it rains and thunders, if the location of the satellite pot is relatively high, there will be a situation of lightning channeling, which will bring great threats to people's lives.
Later, with the development of science and technology, the satellite pot has also been improved, from the larger the signal the better, it has become smaller, and the material is more durable, but it alsoIt has changed from being placed on the roof to being installed on the edge of the house
Although the satellite signal received by the satellite pot is more stable when it becomes smaller, it is also more likely to be blown away by strong winds, posing a threat to people's lives.
As we all know, electronic products will produce radiation, which has a great harm to people's health.
There are many products in life that will produce radiation, just like mobile phones that people do not leave will produce trace amounts of radiation, as well as computers, televisions, etc., will produce a certain amount of radiation, but these radiation are controlled within a safe range.
The satellite pot is different, because the satellite pot directly collects satellite signals, and the radiation generated is also very large.
At that time, when the satellite pot was improved and made smaller, people installed the satellite pot near the window in order to make it easier to adjust the angle.
Doing so will cause the radiation emitted by the satellite pot to continue to endanger people's health.
Radiation is extremely harmful to people's bodies, not only will the body's resistance decrease, more likely to get sick, but also long-term exposure to radiation will also increase the probability of cancer.
If you are pregnantLong-term exposure to radiation can cause damage to the fetus in the womb, not only is there a probability of miscarriage, but there is also a possibilityCauses fetal malformations
Not only that, there are many people in life who will have the habit of being greedy for small and cheap, and when choosing a satellite pot, they often choose cheaper equipment.
In this way, it is possible to buy bad products, and it is also possible to buy products that are not produced by regular manufacturers, and the quality of these products is not well guaranteed, and the harm to the body will also increase.
At the same time of causing harm to the human body, the satellite pot will also receive foreign signals, domestic programs are generally screened layer by layer, there is no bad content in the program, and foreign control in this regard is much less, and some unhealthy programs are often broadcast, affecting the psychological growth of children.
In the process of growing up, children are easily misled by unhealthy programs, which affects their growth.
Whether it is the threat of satellite pots to people's personal safety, or the possibility of broadcasting some programs that affect the healthy growth of children, it is not the main reason why the state bans satellite pots.
Since the satellite pot will not screen the received signal, the state will not be able to supervise the signal, and some foreign lawbreakers will take advantage of this to invade, and after using it, it is more likely that a series of criminal activities will occur in the country.
Therefore, the state's ban on the use of satellite pots is not only for the sake of the personal safety of the general public, but also to prevent foreign lawbreakers from taking advantage of the opportunity to cause losses to the country.
Nowadays, there is a better alternative to satellite pots in people's lives, and there is no need to worry about poor signal due to weather when it comes to TV.
At the same time, people can watch whatever they want, and they can watch TV whenever they want, and there will be no pinching to watch TV.
Compared with China's ban on the use of satellite pots, countries in Europe and the United States will be relatively open, and even spread throughout Africa.
As the country that launches the most satellites in the world, the United States is also more cautious about satellite pots, but it does not prohibit the use of them like China.
The United States, which has the most comprehensive popularization of television, is also extremely strict in its monitoring and management of satellite pots.
Not only the monitoring of satellite pots, alsoRelevant laws and policies have been put in placeAt the same time, it requires that the satellite pot must enter the U.S. market through legal channels to ensure that there will be no violations of regulations in China.
European and American countries are relatively open to satellite pots, but they have also carried out certain controls, but each of these countries has different practices.
LikeGermany, the satellite pot is required to meet the EU standards for use before it can be soldUnited KingdomIt is to make a series of regulations on the transmission of satellite TV signals, to achieve the monitoring role.
And some countries in Africa are not so tightly controlled, likeAlgeriaPeople in the city live in commercial housingAs far as the eye can see, a satellite pot will appear near almost every window, and the popularity is breathtaking.
In the case of more harm than good, the state prohibits the use of satellite pots, but the development of science and technology has also brought people more practical products than satellite pots, so it is hoped that people can actively respond to the policy ...... promoted by the state