Speaking of China's largest satellite receiver, the radio telescope located in Guizhou - "China Sky Eye" should be the first reaction of the Chinese people.
As the world's largest single-antenna radio telescope, its function is not only to observe the universe and understand extraterrestrial information, but also to receive extraterrestrial information, which is why it is also called "extraterrestrial signal receiver".
As an important weapon of the country, "China's Sky Eye" may be too far away from our lives, but one of its "siblings" has been closely related to our lives in the past ten yearsIts scientific name is satellite TV receiver, which is commonly known as satellite pot
With the rapid development of the country's economy, it will not be long before the Chinese people are no longer limited to the material life of eating and drinking, and it is also for this reason that the "heartthrob" of the rapid development of China's spiritual market is television.
It's just because TV is just getting started, soAt the beginning, the TV signal was not very good, and there would be no signal at every turn, so at that time, each TV would be paired with a receiver called an "antenna" to stabilize the signal
At the same time, in order to quickly solve the problem that people can't see the clear station and can't see the clear station for a long time, the state has also stepped up efforts to start developing the technology of cable data transmission (which is often referred to as cable television).
However, due to the vast amount of land and resources in China, even if the construction workers work overtime, the laying speed of wired data transmission optical cables is still slower than the needs of the Chinese people.
WhileAt this juncture, a device called a satellite TV receiver sprung up,Instantly with cheap **,Powerful functions and easy installation seized the Chinese TV market,In a period of time, it is no exaggeration to say that it is almost one person in some rural areas。
Satellite TV receivers are generally composed of a polished concave metal plate and a high-frequency head, and it is also because of this polished concave metal plate that it has also been given a people-friendly name "satellite pot" by the Chinese people
Then some people wonder, what kind of ability does this gadget rely on to replace the wired transmission vigorously laid by the state to become a necessary "furniture" for every home? This brings us to how it works and what it has to offer.
If you want to talk about the working reason of the "satellite pot", you can't avoid the word "pot" in its name, think about why "China Sky Eye" has a equivalent to 275 football fields big "pot" too,In fact, the purpose of this "pot" is to collect information transmitted from the outside world, and through the concave surface of the metal plate, these scattered signals are gathered and strengthened, so that they can be analyzed.
To put it in layman's terms, the "pot" is just like the human ear, which can gather information and make people hear it more clearly.
Once the information is clustered together, the next step is the high-frequency headThe information gathered is decoded and translated through high-frequency heads, and finally transmitted to TV and formed various channels that ordinary people can watch
So what are the advantages of this gadget?
For the people, the first thing must be cost-effectiveAt that time, because the "satellite pot" was all over the major markets, the "satellite pot" was relatively cheapDozens to two or three hundredNo, just imagine that as long as you spend this money, you can watch a lot of TV and it is a buyout system, this kind of cost-effective people naturally flock to it.
In addition to the advantages, its functionality and convenience are also very powerful, and it only takes a few minutes to install after buying.
And at the beginning, the volume of the satellite pot is very large, which means that its ability to receive signals is very strong, so there are a lot of stations that can be seenEven some cable TV can't watch it, you can go through the satellite pot ** - it is some foreign variety shows
But after such a piece of equipment was popular for a period of time, it suddenly disappeared under the rectification of the state, and why is this?
The first reason for this is that its ability is too strong, yes, as mentioned earlier, it can receive a lot of satellite TV programs, and even foreign variety shows can be received to a certain extent.
But the question that arises is, can these foreign programs pass the review?
You must know that because of the different political conditions in each country, the review of TV programs naturally varies, and these programs that cannot be watched under the control of the state cannot flow into the domestic market.
However, with the emergence of the loophole of the satellite pot, the illegal columns that were originally blocked by the relevant departments have the opportunity to take advantage of the situation, which will not only affect the spirit of the ** program, but also invisibly increase the pressure on law enforcement agencies, and the ban on satellite pots has become the best measure.
The second reason is actually related to its ability to be too strongYou must know that every satellite pot is like a small information receiving station, and this gives some criminals new space to commit crimes-- The use of satellite pots to transmit information to each other, and this way of transmission is not only convenient and fast, but also not easy to be detected, so in order to eliminate this loophole, the state has made great efforts to rectify this problem.
The third reason is the security problem, although the propagation of the signal is invisible and invisible, but this does not prove that these "nothing" signals can be received by the "satellite pot" through any masking, in order to solve this problemSo in that popular era, in addition to having a solar energy on the roof, there would also be a huge satellite pot
However, relative to the manufacturer, the merchant has traces of solar water heaters, and in case of problems, you can find the merchant after-sales serviceAlmost all of the "satellite pots" are "three-no products".
In this way, the quality of the satellite pot will be uneven, and some poor quality satellite pots will have problems once they are exposed to wind and rain, and then customers will face the situation that they have no way to protect their rights.
Moreover, some satellite pots are fixed and loose because they have been installed for too long, and these fixed and unstable satellite pots may fall from the roof when blown by the wind, which is tantamount to increasing the danger to the people passing by.
In addition to that,Because it is a metal object and placed in a high place, the satellite pot is like a "lightning receiver", which is easy to be struck by lightning during thunderstorms
So in the case of more harm than good, satellite pots were banned by law enforcement and became a thing of the past.
Nowadays, with the development of the times, information technology is no longer as single as it was back then, digital, network TV emerges in an endless stream, and it can be interconnected with TV through various mobile phone apps, so for things like satellite pots, it has long become a situation where there are only disadvantages and no benefits.