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GMartinFlag for United States of America

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why does a WiFi extender need to simultaneously broadcast on both 2.4 GHz and 5 GHz frequencies?

Hello and Good Morning Everyone,

         Recently, I ordered and set up a WiFi extender provided by AT&T.  I did notice that both, the 2.4 GHz and 5 GHz lights are a steady green which is the way it is supposed to be.  Just out of technical curiosity, I am wondering why the WiFi extender needs to simultaneously broadcast on both frequencies as opposed to just one.  

          Any shared views or thoughts regarding this question will be appreciated.

          Thank you

          George
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Ugo Mena
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Dr. Klahn

Go into setup on the extender.  It is usually possible to disable one or both bands.
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Hello and Good Morning Everyone,

           Thank you everyone for breaking this down to a level that makes sense to me.  According to the setup instructions which came with the WiFi extender, both, the 2.4 GHz and 5 GHz frequencies need to be broadcasted at the same time.  From what I gathered from an AT&T representative, the WiFi extender will not have its own or independent IP address.  That said, I am not sure if it is possible to login to its setup seeing that it is merely taking all of the information being broadcasted from the AP and sending it to the client iPhone on the other side of the wall.  

            With respect to performance, which is most important, my friend on the other side of the wall is able to surf the internet, do online chatting, and check emails.  However, there is a buffering issue noticed whenever he tries to watch a video on YouTube or watch a movie online.  This is an issue that will need to be followed upon more.   Other than that, everything seems to be working okay.

             George