https://devzone.nordicsemi.com/f/nordic-q-a/49979/continuous-unmodulated-tx-carrierHi, I want nRF52 Continuous Unmodulated TX carrier. Is it possible by TASK_TXEN and TASK_START or radio_tx_carrier command of radio test example, after TX configuration ?en-USTelligent Community 13Fri, 19 Jul 2019 01:05:50 GMThttps://devzone.nordicsemi.com/thread/199385?ContentTypeID=1Fri, 19 Jul 2019 01:05:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9a5e012d-03b8-4c8a-9b62-c3ac5ef95b1cmasamasa<p>Thank you very much !!</p> <p>I&#39;ll try it .</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/199382?ContentTypeID=1Fri, 19 Jul 2019 00:36:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4fa36806-f54b-40f6-aea8-6cdaf4ac735aH&#229;vard<p>The radio operates in modulations found here:</p> <p><a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html?cp=3_0_0_5_19">https://infocenter.nordicsemi.com/topic/ps_nrf52840/radio.html?cp=3_0_0_5_19</a></p> <p></p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1563495911304v1.png" alt=" " /></p> <p></p> <p>But the radio can output unmodulated constant carrier in test mode, as described by Einar here:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/16184/frequency-width-and-modulation-non-modulation">https://devzone.nordicsemi.com/f/nordic-q-a/16184/frequency-width-and-modulation-non-modulation</a></p> <p>You are correct that you can use the radio test example. Note the modes&nbsp;start_tx_carrier (as opposed to start_tx_modulated_carrier.)</p><div style="clear:both;"></div>