Will a wireless n and a wireless g router interfere with each other?

"Can you find just a wireless-N router, without backward support for A/B/G? I haven't looked, but I would guess it would be hard to find...

Either way, yes, I have seen N & G routers conflict so much that they acted as jammers to each other. But, they can be configured to work properly.... But it's a try it and experiment time... Try to go with a namebrand.... LinkSys, D/Link, and Apple are used here without any issues..."

If you buy a router with dual-band, dual-antennas e.g. NetGear WNDR3700, you can place b/g on the 2.4GHz spectrum and a/n on the 5GHz. This way g and n will not run over each other at all. I have it set up this way and it works great.

"As many others have said, you don't need to have 2 routers since almost all routers have backwards compatibly with older versions of the WiFi 802.11 Specs unless you explicitly disable them.

However, that may or may not impede performance. Having a multi-radio (multi-band) Wifi-N router may avoid this.

If you do wish to have 2 WiFi routers/Access Points (you're going to have problems if their both ""routers"" and you want to be on the same network), you can just set them to use different channels.

In the US, channels 1,7,11 do not overlap with each other (the ones in between are not recommended). For example, you can set your B/G WiFi router to use channel 1 and your N router to use channel 7."

"I had to use two routers because my webcam on the top floor would not reach the bottom floor where my DSL wireless router was located. I set up the second router as a slave to the first. Everything worked great until I went to cable. The cable modem just has a single ethernet port, so I replaced the lower floor DSL modem with a cheap single band D-Link N wireless router.
Suddenly the slave router's WiFi cuts in an out. I suspect it is interference from the new N D-Link router.
The D-Link is set at 20 / 40 MHz. It was on channel 2 while the old router was on 7. I have now set the D-Link on channel 1 and the old router on 11 (there is a weak signal from a neighbor on 11, but it is so weak that I hope it is not a problem).

Channel 1 is at 2.412 GHz. If we assume that 40 MHz is +/- 20 MHz, then that means it could reach up to 2.432 GHz. If G is +/- 10 MHz, then that means I need a channel at least at 2.442 GHz. That is channel 7. Since I used to have them set to 2 and 7, that could be the cause of my interference.

I have a stronger signal from a neighbor at channel 9. That is 2.452 GHz. Assuming +/-10MHz, that would cover up to 2.462 GHz. 2.462 GHz is channel 11, where I currently have my signal. So I might have a problem. But if I set my signal to a lower channel, it will mix with my much stronger N signal on Channel 1.

But the bottom line is that I set the N WiFi to channel 1 and my G WiFi to channel 11 and the interference stopped on my second router. The weaker signals from the neighbors do not seem to be a problem.

If I had to do this all over again, I would get a dual band N router and make it strong enough to cover the entire house so I would not need two wireless routers. Those N routers are a huge spectrum hog, especially if set to 40 MHz."