https://devzone.nordicsemi.com/f/nordic-q-a/21300/nrf51-w-rfaxis-2401c-conducted-power-problemWe&#39;re using the nrf51 with the RFAxis (now Skyworks) 2401C amplifier, which is a fixed gain 20dBm amplifier. The goal is to have a longer range &#39;beacon&#39; type product and the results so far are great. We have really good range and the signal quality looksen-USTelligent Community 13Tue, 18 Apr 2017 13:00:32 GMThttps://devzone.nordicsemi.com/thread/83451?ContentTypeID=1Tue, 18 Apr 2017 13:00:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b85e2bcb-802b-4cf5-9fdd-49a4611dadfdFormerMember<p>Under which FCC rule does your device fail? Is it when testing for a &quot;frequency hopping device&quot;? If you plan to use BLE, your device should not be qualified as a frequency hopping device: While it does hop in frequency in connected mode, it doesn&#39;t in advertising mode. So it will fail the hopping requirements. Instead, the device should be qualified as a &quot;Digital Transmission System&quot; under FCC 15.247.</p><div style="clear:both;"></div>