wider channels, means channel overlap for anyone else using b or g connection to the router.
40 MHz channels are incorporated into 802.11n, doubling the channel space from 20 MHz in previous 802.11a/g standards. This allows for a doubling of the data rate over a single 20 MHz channel. It can be enabled in the 5 GHz mode, or within the 2.4 GHz if there is knowledge that it will not interfere with any other 802.11 or non-802.11 (such as Bluetooth) system using those same frequencies.
Of course there just isn’t much room on the 2.4 GHz band for “N”, which requires two channels. Most users will want to use 5 GHz to reduce interference from current 802b/g WiFi products, not to mention Bluetooth, wireless phones and other consumer devices.
A router with n should allow setting for g only, where needed.
I have a 9 year old Linksys router; model #WRT54G that is 9 years old and I would like to replace it with something new but something that will work with my current computer. I have a 6 year old Dell Vostro 1510 laptop which has Windows Vista. The wireless card that came installed in the computer is a Dell Wireless 1395 802.11g Mini Card.
I called Linksys sales the other day; spoke to a guy in India. I was considering purchasing a Linksys WRT54GL which is the replacement model for my Linksys WRT54G router but the guy with Linksys in India told me Linksys no longer supported the WRT54GL model; he recommended another model; a Linksys EA6500 Dual Band Smart Wi-Fi AC router; he said it was a wireless "N" router and it was much faster than my old wireless "g" router.
An employee at Walmart told me the other day I should also consider a wireless "N" router. Would a wireless "N" router work with my 6 year old Dell Vostro 1510 laptop which has a Dell Wireless 1395 802.11g Mini Card? I assume the "g" in the description of the card means it's a "g" speed card?
I don't know anything about routers which is why I came here to this forum to ask my question but my Linksys WRT54G router has given me good service for the last 9 years so should I purchase another "g" router or should I switch to a wireless "N" router? I'm also considering purchasing an LED HDTV Smart set soon; would I need to purchase a specific type of router that would also work with an LED HDTV Smart TV?