https://devzone.nordicsemi.com/f/nordic-q-a/122443/how-to-test-pa-with-dtmhi support team, if customer want to certificate device with 21540, which tool can customer use for dtm testing? our tool can only set it to 8, can&#39;t be 10, as below: and in DTM readme,it is said: * DTM with front-end module support: en-USTelligent Community 13Tue, 24 Jun 2025 06:38:03 GMThttps://devzone.nordicsemi.com/thread/540261?ContentTypeID=1Tue, 24 Jun 2025 06:38:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d44c5ad9-6955-4ecf-b558-80d367089985mathiaso<p>Hi, William.</p> <p>I&#39;m afraid the&nbsp;DTM application in nRF Connect for Desktop doesn&#39;t support using the nRF21540. See the answer in <a href="https://devzone.nordicsemi.com/f/nordic-q-a/115912/nrf-connect-direct-test-mode-app-v2-4-1-support-for-nrf21540-fem-gain-settings">this ticket</a>.</p> <p>It is, however, possible to use the&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-3.0.2/page/nrf/samples/bluetooth/direct_test_mode/README.html">Bluetooth: Direct Test Mode</a> sample without the nRF Connect for Desktop application.</p> <p>On the other hand, if they want to certify a custom board, the <a href="https://docs.nordicsemi.com/bundle/ncs-3.0.2/page/nrf/samples/peripheral/radio_test/README.html">Radio test (short-range)</a> sample might be a better option.</p> <p>Best regards,<br />Mathias</p><div style="clear:both;"></div>