a question I'm asking (perhaps its stupid) is that, on BLE (Bluetooth Low Energy) why do we need 40 channels?.
37 of these channels are used for connection data and the last three channels (37, 38, and 39) are used as advertising channels to set up connections and send broadcast data.
nrf51 device of Nordic for example has only one receiver available in the chip, so it can listen only to one frequency at a time? so why 37??.
what's the purpose of multiple frequencies while we can do communication with one channel (frequency)