"Power Save Mode" setting for MBP Airport Card (Atheros AR5008)

Thanks for your response, but I need to turn off Power Save Mode when the MBP is operating. This setting is causing consistent connectivity issues with my OpenBSD access point and through both expert advice from OpenBSD developers and also my own experimentation with this setting when the MBP is booted into Windows it would seem this is the issue.

Thanks for your response. Unfortunately I think the Airport card does employ power saving measures when the Macbook Pro is awake and operating on batteries (but apparently not when running on mains) - this is evidenced by the behaviour with the "Power Save Mode" setting when booting into Windows as described previously.

I'm looking for a way to change the 802.11 Power Save Mode in Mac OS X. I'm aware the setting on Windows does not affect Mac OS X (it would be nice if it was a firmware setting rather than a driver setting as I would then be set!) but obviously it's the same hardware being used by both operating systems so if there's a way of resolving the behaviour through a driver setting in Windows then (at least theoretically) there should be a method for resolving the same behaviour when running on Mac OS X.

The discussion archived at http://thread.gmane.org/gmane.os.openbsd.misc/152435 should provide claification, in particular this comment relating to me OpenBSD wireless access point:

"There are power savings for 802.11 that OpenBSD does not support; this is
entirely independent from saving battery via cpu clocking and it is also
entirely independent from saving battery via adjusting the transmit power
of the radio. The power savings for 802.11 actually put the radio to sleep
for a given interval and wake it up sending a message to the AP which is
supposed to hold packets for a given client until the client responds,
which OpenBSD does not do, therefore packetloss ensues.

I know this very well, my BlackBerry Pearl 8120 gets 90-95% packet loss
with an OpenBSD based AP."

I'm hoping that the capability to turn off 802.11 Power Save Mode exists in an undocumented configuration file or command-line utility somewhere in Mac OS X?

Replying to my own posts multiple times is bad form, I know, but to clarify the issue further, the functionality in question is called Power Save Polling (PSP) and my issue is similar to that reported at http://discussions.apple.com/thread.jspa?threadID=639413 way back in 2006!

Given the lack of response to that post as well as mine I'm not all that hopeful of a resolution. It is frustrating that Windows offers the capability to turn off this feature on the MBP but Mac OS X driver apparently does not sigh.