Recent content by ilyasse

i know what i don't understand is from where the 2.4 and 5 ghz came from , where are they produced ? i know from what i learned here that the electromagnetic waves are produced by the currant passing through the entenna the only way to have at the same time two bands is in fact that we have one...

thanks for those info , but i wasn't very precise , i was talking to wifi case only . in wifi each pc demands different informations so you can't broadcast all the pc's at once it force you to use only one antenna for each pc at a time . for example the same information like in a tv , my bad ...

thanks i was able to understand some informations , but one last question before , if you create a radio wave just by currant passing in the antenna , then how can wifi be backward compatible with 2.4 and 5 ghz , i mean how can we create two different waves at the same time from the same antenna...

hello people . i don't know if this is the right place to ask , but I'm studding for my cisco ccna and now I'm learning more about radio waves and wifi networks and i fall in love with the subject , what i don't understand is what's the difference between a radio and a antenna , because i asked...