ESP32 sniffer max bit rate?

[chaotaklon]

Hi,

I am following this blog post to build a WIFI sniffer.
http://blog.podkalicki.com/esp32-wifi-sniffer/
My transmission side transmits at above 58Mbps but the sniffer losses most of the packets and can get 0.9Mbps only. The TX is using maximum power and near to the RX. In RX, the call back function takes only 20us which should be fast enough to get all 58Mbps packets because the packet size is 1400 bytes. Looks like there is some routine outside of the call back slow down the receive bit rate. How do we solve it?

Alan

[Agree007]

Are you sniffing (rx) on one specific channel as your TX? or are you sniffing with channel hopping?

[chaotaklon]

TX and RX are fixed at the same channel