On Fri, Jul 25, 2008 at 03:50:17PM +0200, Emilio Ancillotti wrote: > Hi there, > > I have a problem using my soekris 4801 with two miniPCI wireless cards > (R52H High Power Mikrotik 802.11a/b/g mPCI). > > The problem is the following. When each wireless card works alone > I have not problem, and I obtain a throughput of about 24-25Mbps. > However, when both cards work simultaneously, the per flow throughput > of each cards is reduce of about 40%, even if the two wireless cards > use different channels (1 and 11).
Are the antennas very close? Within a foot of each other? When the antennas of the two radios are very close, they may interfere with each other, even at opposite ends of the 2.4GHz ISM band. It is also possible that two radios in the same box will interfere at the intermediate frequency (IF). Jim Thompson has written about the various ways that two colocated radios can interfere, even on so-called "non-overlapping" 802.11 channels. A Google search will probably turn up his discussion of the issues. Dave -- David Young OJC Technologies [EMAIL PROTECTED] Urbana, IL * (217) 278-3933 ext 24 _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
