Frequency Bandwidth: 20MHz vs 40 MHz vs Auto

[djdelarosa25]

We have two wireless AP's in the house, one is from the ISP provided router and one is a WiFi repeater. Our area isn't congested, though there are times when two of my neighbors' AP's pop up randomly. Should I set my router's frequency bandwidth to 20MHz, 40MHz, or just leave it at auto?

[Blebekblebek]

doesn't matter as long the channel isn't the same.

but having said that

 

Wireless N 300Mbps only works with 40Mhz, but if you have devices that doesn't support it, then it might not be able to connect.

[CyberneticTitan]

In general,

 

If 2.4Ghz -> 20Mhz

If 5Ghz -> 40Mhz

 

If you're fairly wirelessly isolated and you have modern devices, go for 40Mhz.

[djdelarosa25]

30 minutes ago, CyberneticTitan said:

In general,

 

If 2.4Ghz -> 20Mhz

If 5Ghz -> 40Mhz

 

If you're fairly wirelessly isolated and you have modern devices, go for 40Mhz.

 

My WiFi modem doesn't support 5GHz, however we are wirelessly isolated (at the moment, the three SSID's that are showing are all from our house) and our devices are modern.