https://devzone.nordicsemi.com/f/nordic-q-a/125652/antenna-switching-without-cte-info-from-transmitterMy project is based on tracking using BLE signal. I have nrf52833DK and CHW1010-ANT2-1.1 and Iam able to get the IQ data. Now in my case transmitter will not sent any CTE packet, but I have to antenna switching to happen at the receiver irrespective ofen-USTelligent Community 13Wed, 19 Nov 2025 12:03:47 GMThttps://devzone.nordicsemi.com/thread/554780?ContentTypeID=1Wed, 19 Nov 2025 12:03:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e1633aa5-7225-45c6-89af-fe95cd8afacfSwRa<p>Hi Sumathi,</p> <p><span>&nbsp;Antenna switching for AoA on the nRF52833 is designed to be triggered by the reception of a Bluetooth packet containing a Constant Tone Extension (CTE) as per the Bluetooth specification. The antenna switching and IQ sampling are tightly coupled to the CTE structure. The receiver uses the CTEInfo field in the PDU’s extended advertising header to determine when and how to perform antenna switching and IQ sampling. This is the standard and supported operation mode for direction finding on Nordic devices like the nRF52833. See here:&nbsp;<a href="https://docs.nordicsemi.com/bundle/ps_nrf52833/page/radio.html#ariaid-title13">https://docs.nordicsemi.com/bundle/ps_nrf52833/page/radio.html#ariaid-title13</a>&nbsp;</span></p> <p><span>Regards,</span></p> <p><span>Swathy</span></p><div style="clear:both;"></div>