One thing to bear in mind is the channel numbers were set with the original 802.11 from 1997 and were all non overlapping. With 802.11b, each channel now takes 5 of the original channels. This is why only channels 1, 6 & 11 are used.
In electromagnetic physics, waves with shorter wavelength and higher frequency (eg. Gamma Rays) tends to have higher penetrating power than waves with longer wavelength and lower frequency (eg. Radiowaves). In between 2.4GHz band and 5GHz band (13:38), why is 2.4GHz (lower frequency) being more penetrative than 5GHz(higher frequency)? Given that both 2.4GHz and 5GHz are Radiowaves.
One reason why 2.4GHz waves may be more penetrative than 5GHz waves is that 2.4GHz waves are less affected by obstacles in their path. This is because they have longer wavelengths and are better able to diffract around objects. 5GHz waves, on the other hand, have shorter wavelengths and are more likely to be absorbed or reflected by obstacles, which can limit their penetrating power.
I agree. Professor Messer just gives straight knowledge but doesn't introduce the information conceptually. Although, I greatly appreciate what Professor Messer has done. I connect much better with teachers introducing the material conceptually.
@@user-bt3nb7xd2l Yeah you put it perfectly. He tells you what you need to know but doesn't help you understand it, which definitely works for some people but not for me personally.
Since channel 1,6 and 11 are not overlapping with each other and If I have 2 APs (operate in 2.4 band) both set to channel 11 is there going be interfering with each other ? OR I should set one AP to channel 1 (or channel 3) the other AP should be set channel 11 ?
If two access points using same channel are nearby then this may create interference, as per my understanding, it is recommended to use channel 1(2) and 11
One thing to bear in mind is the channel numbers were set with the original 802.11 from 1997 and were all non overlapping. With 802.11b, each channel now takes 5 of the original channels. This is why only channels 1, 6 & 11 are used.
Thank you for your comment with more information.
its kinda difficult topic but its actually good video pretty easy to understand, thanks
Glad it helped!
Good explanation, thanks
great video with easy explanation. I have an interview in an hour and this info is crucial. thank you
Glad it was helpful!
Great explanation, thank you very much.
Glad it was helpful!
In electromagnetic physics, waves with shorter wavelength and higher frequency (eg. Gamma Rays) tends to have higher penetrating power than waves with longer wavelength and lower frequency (eg. Radiowaves). In between 2.4GHz band and 5GHz band (13:38), why is 2.4GHz (lower frequency) being more penetrative than 5GHz(higher frequency)? Given that both 2.4GHz and 5GHz are Radiowaves.
One reason why 2.4GHz waves may be more penetrative than 5GHz waves is that 2.4GHz waves are less affected by obstacles in their path. This is because they have longer wavelengths and are better able to diffract around objects. 5GHz waves, on the other hand, have shorter wavelengths and are more likely to be absorbed or reflected by obstacles, which can limit their penetrating power.
this explanation is better than Professor Messer
so nice of you, bro
I agree. Professor Messer just gives straight knowledge but doesn't introduce the information conceptually. Although, I greatly appreciate what Professor Messer has done. I connect much better with teachers introducing the material conceptually.
@@user-bt3nb7xd2l Yeah you put it perfectly. He tells you what you need to know but doesn't help you understand it, which definitely works for some people but not for me personally.
If I want to operate on Channel # 2 / 7 / 12, How far away should I be located away from the boundary of operating area of Channel # 1 / 6 / 11 ?
Since channel 1,6 and 11 are not overlapping with each other and If I have 2 APs (operate in 2.4 band) both set to channel 11 is there going be interfering with each other ? OR I should set one AP to channel 1 (or channel 3) the other AP should be set channel 11 ?
If two access points using same channel are nearby then this may create interference, as per my understanding, it is recommended to use channel 1(2) and 11
Why is 20 MHz used in 2.4 GHz and not lower bandwidths?
may be, because there are several overlapping channels in this band
in my experience, channels 1 and 2 are the best
Thank you very much for sharing your experience
Exe.
Thanks!