SeeedStudio - Crazyradio PA - Long Range 2.4Ghz USB Radio Dongle With Antenna - DIY Maker Open Source BOOOLE Radio power amplifier giving 20dBm output power. &gt; 1km range LOS with Crazyflie 2.0 Open Source firmware upgradable via USB Based on nRF24LU1+ chip from Nordic Semiconductor Standard USB-A connector Package includes Crazyflie PA radio and Duck Antenna