Using DWall on Open wifi networks passively, without routing

[AmbientTech]

I'm looking to run the DWall module (or something like it) against an Open wifi network with no password (no WEP/WPA).  

All WiFi packet contents should be in the clear and visible to any participant on that channel, but the DWall module doesn't seem to operate promiscuously.  It shows information for requests routed through the Pineapple, of course.  I'm looking to report on all the visible air packets instead, without being involved in their routing.. passive Rx only.

Is this possible with some wlan radio configuration?

Thanks!

[Cap_Sig]

Have you tried using a passive tool like airodump-ng or kismet?