It is definitely possible to send and receive on a custom frequency (don't know about bandwidth). But not in a clean, fully supported way as far as I am aware.

There is a low-level function available in the WiFi stack that let's you configure the PHY frequency for TX/RX directly. You can link to it ...

Hi there,

I am trying to find a predictable-latency indicator for the RX time of a WiFi packet on the ESP32-S3 as part of my bachelor thesis.

I have stumbled upon the `BB_DIAG0_IDX` through `BB_DIAG18_IDX` signals in `components/soc/esp32s3/include/soc/gpio_sig_map.h` and some experiments did ...