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ATH5k - Signal measurement reports wrong values

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Dears,

Look at the attached chart.

After upgrading from compat-wireless-2010-06-13 to compat-wireless-2010-06-18 
the reported signal drops from -65dB to -77dB.

The ATH5k simply lies, because green line in reverse direction did not 
change. The second point has bullet.

Only purple line dropped.

But from my point of view the purple line should be comparable with green
line (measured by bullet). If somebody is interested in experiment, I could
fiddle with Tx power on a bullet and chart a response.

regards
   Jara

Attachment: X_rodga-week_big.png
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