Modifying ESP-NOW (esp32) Bandwidth (under 20Mhz) to Reduce Wi-Fi Interference

[zorro1011]

Hi everyone,

Currently, ESP-NOW uses a bandwidth of 20 MHz or 40 MHz. However, I am experiencing interference with adjacent home Wi-Fi bands.

I would like to know if anyone has experience or knowledge on how to modify the ESP-NOW bandwidth to less than 20 MHz in order to reduce this interference. I understand that the default hardware configuration primarily supports 20 MHz and 40 MHz, but I was wondering if there are any solutions or workarounds that could be implemented at the firmware or software level.

Any suggestions or experiences would be greatly appreciated. Thanks in advance!

P.S. I am already using the maxpower and LongRange configuration with the following commands:

esp_wifi_set_max_tx_power(80);
esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_LR);