On Fri, Apr 24, 2009 at 8:12 AM, Daniel Owen <danielowe...@gmail.com> wrote:
> As another person suggested 5 Ghz is much less crowded. You said you had > tried an N router. Are you certain that the N router was using 5 Ghz > exclusively? There are a fair number of N routers that use both 2.4 Ghz and > 5 Ghz for N. There are even a few that are 2.4 Ghz exclusively. The tipoff > (outside of reading the specs) on the exclusively 2.4 Ghz models is that > they don't have 802.11a backward compatibility since they have no 5 Ghz > radio. I would make sure that the N router you are using is only using 5 > Ghz. Also have you tries both 20-MHz and 40-MHz? All 40-MHz really is is two > adjacent channels bonded together.In theory the router is supposed to shift > traffic to the less interfered band if one band is getting heavy > interference. > > The reason that 5 Ghz is superior to 2.4 Ghz outside of the limited use is > that there are more channels available. With 2.4 Ghz (802.11 b and g) you > have 11 channels but only 3 are non-overlapping. Throw on top of that that > at least one or two of your neighbors have probably decided to use one of > the in between channels because it is "clear" and you have a few neighbors > who are interfering with two of the non-overlapping channels. Each channel > overlaps 2 channels above and 2 channels below so for example channel 1 uses > channel 1-3, Channel 4 overlaps with 2-6, channel 6 overlaps 4-8 etc. As you > can see a user using channel 4 overlaps with channel 1 and channel 6 making > them a very annoying neighbor. Channels 1,6 and 11 are the only > non-overlapping channels. With 5 Ghz wireless (a and sometimes n) you have > 22 non-overlapping channels to choose from. If you are using 40-MHz all 5 > Ghz you will use 2 adjacent channels but you are still talking about a much > larger number of available channels. Unless you are in an extremely densely > populated area you should be able to find some available 5 Ghz space that is > either open or has limited interference. > > Another option you might look at is setting our network card to 802.11b > only. 802.11b can deal with a lot more noise than 802.11g. > > Good luck Daniel, Thanks for the suggestions. Yes, I am sure that the router has 5Ghz and it was using 5 Ghz. Several reasons I know this is that the interface shows it and I have tried several laptops with the ability to restrict to which band to connect to. No significant difference. I have tried 20 and 40 Mhz settings and, if anything, 20 Mhz is more stable. I do still need to run a net stumbler (or equivalent) scan of the neighborhood, but I have been too busy recently to do so. Maybe this weekend will see some free time come my way. Thanks again and MAIH... Andy --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to nlug-talk@googlegroups.com To unsubscribe from this group, send email to nlug-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en -~----------~----~----~----~------~----~------~--~---
