Jeff Liebermann <jeffl@comix.santa-cruz.ca.us> wrote:
> 1. I set the speed to automatic and take a walk measuring the signal
> strength and SNR. I inform the customer that 6dB signal strength is
> good for a 2x increase in range.

I wasn't taking a walk. I was sitting at the router, adjusting the
antenna, and watching the indicated speed at the other end of the link
using VNC or RDC. The data moved by watching the far screen is sufficient
to see the perfmon indication fluctuate.

> 2. I lock the speed to 54Mbits/sec and take a walk while downloading
> some giant file and measuring either thruput or PER (packet error
> rate). I draw a curve of the thruput versus distance at 54Mbits/sec.
> The drop off should be quite abrupt. I repeat the test for other
> wireless speeds.

Is the locked-to-54 a go/no-go? I'm not following the need for a locked
speed, as opposed to watching the "current bandwidth" change as an
indicator. I agree that some data needs to be moving for the reading to be
of value.

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Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5