https://devzone.nordicsemi.com/f/nordic-q-a/44440/nrf52840-ble-and-802-15-4-concurrent-transmit-powerWe are using nRF52840 with BLE and 802.15.4 concurrent with S140 SoftDevice. There are two functions to set the transmit power for each radio protocol: sd_ble_gap_tx_power_set(uint8_t role, uint16_t handle, int8_t tx_power) void nrf_802154_pib_tx_power_seten-USTelligent Community 13Wed, 06 Mar 2019 21:52:05 GMThttps://devzone.nordicsemi.com/thread/174670?ContentTypeID=1Wed, 06 Mar 2019 21:52:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c1414072-789d-4f7e-b6ce-1f8d158a5303Pratyush Dave<p>Steve,</p> <p>These two are independent. The sd_ble_gap_tx_power_set() function only controls the Tx power of the radio in BLE operation. When the SD gives a &quot;timeslot&quot; for the radio to be used in the 802.15.4 mode, the nrf_802154_pib_tx_power_set() API controls the Tx power of the radio only in this mode of operation.</p><div style="clear:both;"></div>