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2.4 GHz vs 5 GHz WiFi: What is the difference?

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Nov 28, 2018

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2.4 GHz vs 5 GHz WiFi: What is the difference?
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Transcription

  • Hello everyone
  • Have you ever purchased a new Wi-Fi router and you notice that the router has both?
  • 2.4 gigahertz and 5 gigahertz frequency bands or maybe your existing router has both of them
  • And did you ever wonder why some routers have these dual bands?
  • So that's what we're going to talk about in this video
  • Now a frequency band is how wireless data is transmitted between devices
  • These bands are radio waves that carry the data and these bands are either
  • 2.4 gigahertz or 5 gigahertz
  • now a lot of Wi-Fi routers will only transmit one of these bands which would be the
  • 2.4 band and that's because it's the most common frequency and these are called single band routers
  • But a lot of newer Wi-Fi routers will transmit both the 2.4 and 5 gigahertz bands
  • And these are called dual band Wi-Fi routers now
  • The 2.4 band works pretty well
  • It's the standard band
  • But the problem is that it's not just a standard band that's used in Wi-Fi routers
  • It's also the standard band that's used in a lot of other devices things like microwave ovens cordless phones
  • Bluetooth devices and wireless cameras all used a 2.4 gigahertz band and
  • This became a problem because the fact that so many other devices use the 2.4 band the signal became
  • overcrowded and was causing a lot of interference with
  • Wi-Fi signals and when this happens it slows down the Wi-Fi network speed and
  • Sometimes could cause you to lose connection to the Wi-Fi router
  • So that is why the 5 gigahertz band was added the 5 gigahertz band is a newer band
  • And so it's not as commonly used as the 2.4 So it's used by fewer devices
  • And because it's used by fewer devices the 5 gigahertz is not as crowded
  • So there is no interference or minimal interference
  • So using the 5 gigahertz would relieve the problem related to slow Network speeds and connection drops that will be caused by
  • interference from other devices
  • another reason why the 2.4 is more vulnerable to
  • Interference is because of the difference in wireless channels
  • now if you're not familiar with what a wireless channel is a
  • Wireless channel is just a way to fine-tune and alter a frequency
  • Sometimes you might need to change to a different channel
  • If you are experiencing interference from different wireless devices and changing to a different channel will give you that ability
  • The 2.4 gigahertz band has 11 channels to choose from but of these 11 channels
  • Only 3 are non-overlapping
  • So basically you have three solid channels to choose from but the 5 gigahertz has more channels it has
  • 25 non-overlapping channels
  • And some other differences between a
  • 2.4 and 5 gigahertz band is the speed and the range that they cover the 2.4 gigahertz band
  • Transmits data at a slower speed than the 5 gigahertz
  • But it does have a longer range than the 5 gigahertz the 5 gigahertz band transmits data at a faster speed
  • Than a 2.4 but it has a shorter range the 5 gigahertz has a shorter range
  • Because it has a higher frequency and higher frequencies. Have a harder time
  • penetrating solid objects such as floors and walls in a building
  • So as you can see on this illustration this dual band Wi-Fi router is broadcasting a 2.4 gigahertz band
  • Which is the green color and it's also broadcasting a 5 gigahertz band, which is the red color
  • so as you can see the 2.4 band has a longer range and the signal can cover most of this building and
  • It can also penetrate the second floor and the walls
  • But the 5 gigahertz band has a shorter range
  • The signal doesn't penetrate the second floor or the walls which limits its range inside a building
  • So the question is which band do you want to actually use and that really depends on your situation?
  • they both have their advantages and
  • Disadvantages the advantage of a 2.4 gigahertz is that it has a farther range and it can penetrate solid
  • objects better
  • however
  • the disadvantage that it has is that it's more vulnerable to
  • interference because so many other devices use the same band and it's also slower than the 5 gigahertz and
  • the advantage of the 5 gigahertz is that it has a higher transfer speed and it's less vulnerable to
  • interference
  • But at the same time it does have a shorter range and it has a harder time
  • penetrating through solid objects and if you're interested in getting a dual band Wi-Fi router
  • I'll put a link in the description of this video below of a dual band Wi-Fi router that I personally recommend
  • And thank you for watching
  • You

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Description

Here is the dual band wifi router that I recommend (affiliate) https://amzn.to/2Jv577C

This is an animated video explaining the difference between a 2.4 GHz vs 5 GHz wifi band. It also explains what a dual band router is.