10.5: See detailed AirPort connection information

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10.5: See detailed AirPort connection information
Authored by: megagram on Tue, Nov 6 2007 at 9:31PM PST

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.

So, if you have P1=P2 (no signal loss) the signal loss is 10log1 which is 0. If P1=100 and P2=10, the signal loss is 10log.1 which is -10. For P1=1000 and P2=10, the loss is 10log.01 which is -20.

Someone correct me if I'm wrong, but that's the gist of it.