Comment by skew-aberration

Every wifi radio is an SDR under the hood. I'm not sure about this hack, but the ESP32 one was limited to just acting as an ADC + gain control. That leaves the guts of the radio still locked down, which limits a lot of use cases where you want wifi frames and time domain data. You either need to accept the latency and extract frames on PC, or add an FPGA, or use two cards fed from same antenna. Tx is also not possible.

The MT7996 chip is available with the banana pi R4 board, which has SFP+ (10 gigabit) so you'd have a near completely open ISM band SDR platform right there, feeding data to your server via fiber optics.