WiFi channel selection when using multiple network extenders

[davidastronomy]

I am using the Quantum Gateway router and just added a third network extender to my home network.  I have all four devices set to the same WiFi channel on 2.4 and 5 Ghz.  Is this the optimum setting, or should I change the channel settings to automatic so they're all on different channels?

[Edg1 · Accepted solution]

They should all be on different channels. If they are all the same them they will interfere with each other. On 2.4 GHz there are only 3 non-overlapping channels 1,6,11. On 5 GHz there are many more non-overlapping channel. 
It’s best if they are set to auto. You can also download a wifi analyzer tool from the Play Store if you have an Android phone/tablet. That will tell you the best channel to use at each location. 

[davidastronomy]

Thanks.  I will change the channel selection on each device to auto.  Yes, I have the app you mentioned.  There are really no clear channels in my area since it's so congested.

[Edg1]

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@davidastronomy wrote:

Thanks.  I will change the channel selection on each device to auto.  Yes, I have the app you mentioned.  There are really no clear channels in my area since it's so congested.

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The best thing to do would be to connect any devices you can to the 5GHz network. The 5 GHz radio waves don't travel as far and have less interference.