Friends who often play with Merlin or ASUS routers know that wireless routers have country and region options. It is said on the Chinese Internet that the wireless signal in Australia is the best. In addition to global brand router manufacturers such as ASUS, there are also brands such as Netgear and Linksys that also have the function of adjusting the router region. It is true that the signal in Australia is much stronger than the domestic wifi signal.
But how much stronger is it actually? Besides Australia, which other countries and regions have a stronger signal?
Here I share a chart, which can be used to visually compare the global wifi signal national standards:
here only the wireless wifi channel standards of China, the United States and Australia are extracted.
It can be seen from the comparison:
1. Australia has more frequency bands of 100, 104, 108, 112, 116, 132, 136, and 140 than China in the 20M bandwidth of the 5G channel . The United States has added frequency bands 120, 124, and 128 compared to Australia . 2. Australia has 100, 108, and 132 more frequency bands than China in the 5G channel 40M+ bandwidth . The United States has added frequency bands 116 and 124 more than Australia . 3. In the 40M- bandwidth of the 5G channel, Australia has more frequency bands 104, 112, and 136 than China . The United States has added frequency bands 120 and 128 more than Australia . 4. In 5G channel 80M
In terms of bandwidth, Australia has 100 more frequency bands than China. The United States has added 116 frequency bands more than Australia.
5. In the 160M bandwidth of the 5G channel, Australia, like China, only has 36 frequency bands. In the United States, there are 100 more frequency bands.
6. In the 2.4Ghz channel, China and Australia have 13 channels, while the United States has only 11 channels.
Note :
1. If the wireless router selects the Australian region, when the 5G frequency is automatically selected by AUTO, mobile terminals in China may not be able to search for signals (if the wireless router automatically selects these frequencies 100, 104, 108, 112, 116, 132, 136, 140), so if it is adjusted to the Australian region, the 5G frequency needs to be manually specified. Select the frequency band that overlaps with China, such as: 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165.
2. In addition, it should be noted that if you choose a higher bandwidth frequency such as 80M or 160M frequency band, the selected channel range will become less: in the 80M bandwidth frequency band, only the 36, 52, and 149 frequency bands overlap between China, Australia and the United States. If you choose 160M bandwidth, you can only choose 36 frequency bands.
3. The bandwidth must be perfectly combined with the frequency band. A wrong combination will result in no wireless signal. Some enterprise-level high-end wireless APs or wireless routers will automatically combine channels when selecting certain bandwidths. Of course, most civilian wireless routers will not filter out channels that cannot work.
The above mentioned the 2.4G and 5G wireless channel standards of China, Australia and the United States, and of course the 6Ghz wireless standard. The 6Ghz mentioned here refers to the working frequency and not the 6th generation WIFI6. China has not yet opened 6Ghz channels, but the United States has opened more channels. Here is a picture for reference:
the above picture also includes the national standard of WIFI wireless, here you can see which country has the stronger wireless signal in the national standard! Here I have a general table of wireless standards in various countries around the world. This only shows the wireless standards of 3 countries.
It can be seen from the chart:
1. China's WIFI wireless transmission power is relatively conservative. The strongest WIFI wireless signal in the world is the United States , and it is even stronger than Australia in the 5G 52 frequency band. The United States also has the most frequency bands open at the same time.
2. In the 2.4Ghz frequency band (the most commonly used frequency band), the equivalent transmit power in China is 20~27dBm, and 30-36dBm in the United States. The transmit power in the United States is nearly 10 dBm higher than the Chinese standard. This is a very high transmit power. Some high-gain antennas are only about 5dBm at most. Although the wireless routers sold in China look like trees with many antennas, they all need to abide by domestic regulations, and the transmission power is limited to between 20-27dBm.
3. In the 5Ghz frequency band, China’s transmit power is 23dBm, and Australia’s is 23dBm, which is the same. The United States is 24 to 30dBm, which is equivalent to 1 to 7 dBm higher than China’s.
4. In addition, the radar frequency band (usually affected near the airport) overlaps with 5Ghz. There are 4 radar frequency bands in China (52, 56, 60, 64). If you are close to the airport, you need to avoid using these frequency bands. There are more radar frequency bands in the United States and Australia. If you choose these radar frequency bands as the designated frequency bands for WIFI, there may be interference and even the transmit power is forcibly limited by the router.
Summary:
1. In combination, the wireless wifi transmission power of the United States is stronger than that of Australia, and the whole table compares the transmission power of American WIFI with the strongest transmission power in the world.
2. If you have purchased a wireless router that supports the adjustment of countries and regions, you need to choose the country and region reasonably. If you choose a non-mainland China region, you need to manually specify the bandwidth (20/40/80/160M), and manually specify the frequency band (such as 2.4Ghz 1, 6, 11 non-overlapping channels, 5Ghz non-radar and select channels that overlap with China, such as channel 36). The specific settings need to be reasonably set according to the surrounding wireless environment.
3. If there is a need for a global wireless master table, it can be provided.