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We are seeing asymmetric power levels between LWAPP APs and dell 1490 abg cards. The difference between card and AP RSSIs @ 10-20 db. If card is seeing AP at -50 db then AP is seeing card at -65 or -70 db. Has anybody seen this issue?
I've seen this issue with Dell adapters - they report better signal strength than Cisco adapters and APs. I do not know why this occurs, but I would trust the Cisco number over the Dell number.
Sorry I can't be of more help.