https://devzone.nordicsemi.com/f/nordic-q-a/71580/nrf52833-reflected-power-limitHi all, I have a question concerning the nRF52833. I&#39;d like to know if there is a safety limit on the amount of reflected power that is reflected by the antenna inside the RF port. In other words, if the antenna is not well matched, might thereen-USTelligent Community 13Mon, 15 Feb 2021 13:50:51 GMThttps://devzone.nordicsemi.com/thread/294407?ContentTypeID=1Mon, 15 Feb 2021 13:50:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a8e956c-df54-4562-b139-252d1737f78eKenneth[quote user=""]In other words, if the antenna is not well matched, might there be a danger for the nRF (other than a limited Bluetooth communication range) ?[/quote] <p>No damage, it will only&nbsp;cause reduced communication range yes, you can for instance find that this is indirectly tested as part of the receiver operation where it says:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/7268.pastedimage1613397005683v1.png" alt=" " /></p> <p>In general 0dBm on the input will guarantee that there is no degradation on sensitivity, once you exceed this you will start saturate the input (packet loss), and at some point you may damage the input. We have not simulated or characterized any absolute max value, without investigation it is difficult to give an exact limit, but likely in the range of &gt;6 to &lt;10dBm on the input before damage.</p><div style="clear:both;"></div>