This Dragonfly 5.8G 48CH FPV transmitter can be stacked up the flight control</br>DC 9-26V Operating Voltage ??Radiator design</br>48 channels with Raceband??Output power 25mW/200mw/ 600mW Switchable</br>Adjust channel?? band and power via two buttons FR and CH</br>Antenna connector: SMA female connector</br><br/>http://www.amazon.com/gp/product/B06WW2CC11