動画検索
関連広告
検索結果
2.4GHz and 5GHz: what's the difference and why should you care?
Now, to understand the fundamental difference between 2.4GHz and 5GHz we're going to need a bit of physics. Hertz is a measure of frequency so 2.4GHz means that there are 2,400,000,000 wavelengths per second. 5GHz means that there are 5,000,000,000 wavelengths in a second. So you can imagine, there's going to be 3,600,000,000 more wavelengths per second in the 5GHz range than 2.4GHz range.
So what's the point of 5GHz?
Now, there is actually one benefit of the 2.4GHz network which is inherent. And that is: it has a wider range. As we discussed, 2.4GHz has a longer wavelength which means that when it goes through a gap, for example a door, it undergoes greater diffraction. The closer the wavelength to the size of the gap, the more diffraction that takes place so the wave is going to spread out more. Because 5GHz has a shorter wavelength and higher frequency when it goes through a wider gap it's going to diffract less. This means that less of its signal is going to carry out.