You are referring to this old project: nrf52-ble-image-transfer-demo? From what I can see this does not set the Tx power, so the default Tx power of 0 dBm is used. You can increase it if you like, up to the limit of what is supported by the HW ( 8 dBm for the nRF52840). That is doen using sd_ble_gap_tx_power_set().
You are referring to this old project: nrf52-ble-image-transfer-demo? From what I can see this does not set the Tx power, so the default Tx power of 0 dBm is used. You can increase it if you like, up to the limit of what is supported by the HW ( 8 dBm for the nRF52840). That is doen using sd_ble_gap_tx_power_set().
