Re: [ath9k-devel] Noise floor calibration causes 11 dB signal level swing

2012-02-06 Thread Adrian Chadd
Hi, Just please keep in mind that the calibrated noise floor is a dB value, it's not in relation to anything. You can't relate it (easily) to an absolute dBm measurement. So saying the noise floor is -123dB is not really saying it's below thermal noise. Adrian __

Re: [ath9k-devel] Noise floor calibration causes 11 dB signal level swing

2012-02-06 Thread Felix Fietkau
On 2012-02-06 6:12 PM, Triangle Men wrote: > > Hi, > > I noticed the RSSI values in the receive status descriptor will occasionally > drop 11 dB below expected, calculated, historical values and then stay in > that range. Example: RSSI is in range {23,24} for a long time, then range > drops to

[ath9k-devel] Noise floor calibration causes 11 dB signal level swing

2012-02-06 Thread Triangle Men
Hi, I noticed the RSSI values in the receive status descriptor will occasionally drop 11 dB below expected, calculated, historical values and then stay in that range. Example: RSSI is in range {23,24} for a long time, then range drops to {12,13} for days. Last week I had a test setup doing thi