Dlink 803 are 2.4 GHz and 5 GHz on Wi-Fi routers?
These are simply the frequency bands a Wi-Fi router can transmit. Now, if we go back to our school days and remember what frequency means, it's just a number obtained when we divide the velocity of the wave by its wavelength.
Thus, it impacts the two factors of the wave; velocity and wavelength. In simple words, frequency makes a major impact on a wave's speed and range. In this aspect, greater the frequency; higher the speed and lesser the range whereas lesser the frequency; lesser is the speed and higher is the range.
You must be getting some idea about this till now.
What is the difference between 2.4 GHz and 5 GHz on Wi-Fi routers?
Moving on, if we refer the above meanings, we can derive two major differences between these values of frequency available in Wi-Fi routers; SPEED and RANGE.
Here's how they differ on these aspects:
SPEED
When it comes to the speed of the Wi-Fi signal, the value of the frequency directly affects. The higher the frequency, the higher is the speed and vice versa.
Thus, it's clear that when we use 5 GHz frequency band in our Wi-Fi router, the uploading and downloading speeds of the internet will be higher compared to that of 2.4 GHz frequency band. You can stream videos, make a video call or download larger files easily with 5 GHz frequency band unlike with 2.4 GHz band which might allow you only to browse and do very light things on internet.
RANGE
Another factor that these two frequency bands differ from is obviously 'Range' or the 'Coverage' of Wi-Fi signal.
Don't get captivated by the fact about 'Speed' as there will be something you will have to miss out for higher speed and that is the 'coverage'. Here, the high speed will cost you the range. If your frequency band is high, then the range of Wi-Fi signal will be low. The reason is that the higher frequency signals cannot penetrate the walls and obstructions on its way. Thus, the 5 GHz frequency band will provide you lesser coverage than 2.4 GHz.