AirLinK-T 3.0-3.9GHz 10W High Power FPV VTX, 80CH Long Range Video Transmitter for RC Drone Key Features - None standard frequency from 3.7G to 4.3GHz for less congestion. - Designed for long-range flights, up to 10W transmitting power, and provide multi-level adjustment. - Efficient PA and power calibration to ensure power consistency across all channels. - Customized digital PLL circuit, chip level integration, no frequency drift. - Aluminum alloy three-layer shell