Is the 802.11n backwards compatable?
Answers:
Yes, Wifi-N uses matching 2.4Ghz frequency bands that Wifi-b/g do...
Wifi-a uses 5Ghz so it's not compatible beside b/g/n, some PCI/PCMCIA cards will be wifi-a/b/g compatible meaning they are vitally 2 cards in 1 housing...
The idea wifi-N is different, is because it has the potential to use what's called "wideband" - instead of using a 22Mhz wide open signal (for example ch 1 uses 2401Mhz-2423, ch2 2 uses 2406-2428Mhz, and so on...) Wifi-N starts at ch 3 and is 40 Mhz wide instead of 22...
This allows more facts to be transmitted across more "paths" simutaniously :))
It's kind of not easy to understand the concept at first, I'm contained by school for RF Engineering so I could turn on and on about it, but don't want to verbs anyone too bad. If you've get any questions touch free to add - I'll check spinal column!
BTW, to sum up what you asked, YES Wifi-N is backward compatible next to B/G, however A is on a different frequency.
Hope this helps!
Update:
Yes, I'm 100% positive! Wifi-N is no gimmick if you win the right one in Draft 2.0 you'll know how to stream multiple HD signals throughout your house if you want!! You can get up to 400Mbps vs 54(a/g), not to mention I can filch my laptop all the mode down the street about a block away immediately with a standard g card!! Before I have a G router and I could only jump downstairs before I'd lose signal...
When purchasing a router though, bring in sure you get any a Netgear or Linksys - Belkin, D-Link, Buffalo, etc are a little shady and don't contribute quite as upright of range or speed... Linksys be recently bought by Cisco and their products enjoy really stood out!! I personally own the WRT330N and LOVE IT!! I've installed nearly 35-40 of them now and not a single complaint nonetheless!!
See, the FCC has regulated how lots watts/mw a device can transmit, and using DSSS (direct sequence spread spectrum) they can only transmit a small amount of power (100mw-125mw), so they use DSSS which broadcasts on 22 band each carrying different parts of the facts - Wifi-N uses 40 channels and like output power!
You have to own an N router and an N card to utilize the speeds though...
no but 802.11n normally comes beside 802.11b & g in the wifi card.
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