At 11:57 AM 12/15/2004 -0800, Eric Sorenson wrote: >On Wed, 15 Dec 2004, Haudy Kazemi wrote: > >> Are there any other APs or significant sources for interference at one >> location that isn't present at the other? Can you force the APs into >> 802.11b mode to see if that makes any difference in retry rates? How about >> swapping in a WAP11 at the 'good' end and see if it makes any difference? > >I think there is a source of interference that's "behind" the A loc >antenna. I mostly fixed the problem by turning off all the "turbo" >extensions, running in stock 802.11G mode and moving to ch 9. The >turbo stuff only works on ch 6 (I think because it uses additional >spectrum that overlaps 5 and 7 (?)) and everybody's AP is on 6. >Thanks for the suggestions. > >-- > > - Eric Sorenson - Explosive Networking - http://eric.explosive.net -
I'd venture to say you'll get even better results if you move to channel 1 or 11, because channel 9 also overlaps with 6 and 11. The way the 802.11b/g channels are distributed, only channels 1, 6, and 11 are non-overlapping. (Channels 1,4,8, and 11 are considered by some studies to also be effectively 'non-overlapping', although as the spec is written, only 1, 6, and 11 are truely non-overlapping). The turbo mode (i.e. Super-G) on the Atheros chipsets takes channel 6 and half of 11 plus half of 1 to get its extra performance. That's not really considered 'being a nice player' in terms of wireless frequency usage. Broadcom's Afterburner/Speedbooster mode on their WRT54GS units does not use extra wireless frequencies for the performance boost. _______________________________________________ BAWUG's general wireless chat mailing list [unsubscribe] http://lists.bawug.org/mailman/listinfo/wireless
