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10.5: See detailed AirPort connection information
Why is the RSSI negative?
See: http://en.wikipedia.org/wiki/RSSI I would have thought it would be between 0 and 255 - an unsigned short. Could it be that the AirPort menu is displaying it as a signed short, rather than an unsigned short?
10.5: See detailed AirPort connection information
I'm not an expert but my theory is Apple is using dBm for measurement. The greater the negative number, the worse off your signal is. The equation is something like db=10log(p2/p1) where P1 is your original signal in decibels and P2 is the received signal level in decibels.
10.5: See detailed AirPort connection information
Not sure about 802.11x but in the cell phone world (GSM, CDMA, UMTS, etc.) the RSSI is usually expressed as negative number (0 being the optimal signal with no loss at all). My base station is sitting about six feet from my laptop and I get a RSSI of -48. All the neighbors are coming in at about -90 so that seems about right. |
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