On Thu, Dec 4, 2008 at 1:57 PM, Christian Lamparter <chunkeey@xxxxxx> wrote: > On Thursday 04 December 2008 13:44:09 Stefanik Gábor wrote: > >> BTW using RTL8187B's scaling constants for RTL8187L also work well >> with this patch - I get almost identical readings from my BCM4318 and >> my RTL8187L. (I haven't yet submitted my version of the patch because >> it's pretty messy, with #if 0'd code and such.) I wonder whether b43 >> or p54usb is more correct... However, it looks like the same algorithm >> is applicable for both RTL8187 variants. >> > probably b43. p54usb uses static scaling constants to calculate > signal & noise dbm, instead of finding the correct values from the device eeprom > (Note: Link Quality doesn't substract the noise so it could be off even more). > > However, in my testing it was only a few +/- dbm(s), what's your reading? > >From an AP ~5M from my antenna, both cards report around -45dBm. I haven't tested the p54usb-based algorithm yet. -- Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
