Does anyone knows? Is there a RF Monitoring driver for Intel AC 7260? I want to be able to run packet sniffer on my LAN through WiFi in promiscuous mode.

Doesn't wireshark or tcpdump provide the tools you need? Or do you need to see what is "in the air"?

For the RAW RF, a simple $10 dongle and some opensource software get's you a RTL-SDR setup to monitor a wide range of frequencies up to 6-8 gig depending on your antennae.

If you only want to capture data traffic on a Wifi network, then do what rubberman said.

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