This message was posted on behalf of Intel Corporation
Thank you for interest in the Intel® Edison Breakout Board.
The possibility of the Monitor Mode feature is something that depends on the release of a new kernel (estimate date of release not available). That’s because, even though the driver supports BCM43340, the support is for the kernel version 4.0 (Edison board uses kernel version 3.10.17).
For more information, please check the following thread https://communities.intel.com/message/366395#366395, it presents the latest discussion on this topic.