Hi Felix, Thanks for the response. On Wed, Mar 7, 2012 at 5:07 AM, Felix Fietkau <nbd@xxxxxxxxxxx> wrote: > The noise level is not specific to a particular network - I don't think > the libertas hw is measuring it while it's receiving packets. It's > usually measured while there is no transmission on the channel, so aside > from the return code issue the code is probably correct. The docs suggest strongly that the signal is measured based on the most recent beacon. "The SNR field in the response provides the SNR in the most recently received beacon. The NoiseFloor field in the response provides the absolute value of the noise floor in the most recently received beacon." and given that it only gives values when you are associated (i.e. it only looks at the beacons for the one network that you are connected to), I think I can believe this. Does this change your recommendation? Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html