https://devzone.nordicsemi.com/f/nordic-q-a/17546/direct-test-mode-modulationCan&#39;t transmit a modulated carrier for FCC testing part: nRF52832 We are writing our own firmware to support FCC testing. We have been successful at controlling the chip to: continuously transmit an unmodulated carrier change channels en-USTelligent Community 13Mon, 07 Nov 2016 12:10:05 GMThttps://devzone.nordicsemi.com/thread/67464?ContentTypeID=1Mon, 07 Nov 2016 12:10:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:adcbb3d3-7147-45bd-bc1c-3c7e2103b816FormerMember<p>For regulatory testing (like FCC), the easiest is to use <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v12.0.0%2Fnrf_radio_test_example.html&amp;cp=4_0_0_4_5_23">the radio test example</a> in the SDK. With the radio test example, you can fully control the radio; transmit unmodulated carrier, modulated carrier, control the output power, etc.</p><div style="clear:both;"></div>