Subject: Re: Power Data
Newsgroups: gmane.linux.drivers.madwifi.devel
Date: 2005-10-21 22:42:12 GMT (3 years, 11 weeks, 3 days, 11 hours and 10 minutes ago)
Michael Renzmann wrote: > Can anyone test if this issue persists in the new code (madwifi-ng)? Following up my original posting of this data... The short version is it still happens exactly as before. I've got madwifi-ng up on two of the same nodes with the same wireless cards. Spectrum analyzer is on channel 2 (802.11g) with direct connect pigtail from antenna connector to the input. All tests are done after power down, card swap, power up, log in immediately and start flood pinging the control node. This is in analyzer mode, similar results obtained in channel power mode (which is just another way of looking at it). Manufacturer A card 1: peak at 0 dBm, no variations card 2: peak at -5dBm, drops to -10dBm after 60 seconds card 3: peak at 0dBm, drops to -10dBm after 60 seconds card 4: peak at -5dBm, drops to -15dBm after 60 seconds. Manufacturer B card 1: peak at 10dBm, no variations card 2: peak at 10dBm, no variations Also interesting: The spectrum for the new drivers looks a bit different - the old ones were a gentle(r) hump with max power centered at 2.417Ghz. The new ones peg max power flat all the way from 9 Mhz above and below the centerpoint. I also saw no differences in output when trying 'iwconfig ath1 txpower <x>' or 'iwpriv ath1 doth_pwrtgt <x>'. Ron Dippold ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl