Flysky Receiver Compatibility, Fast & Free shipping on many items! Flysky LED Receiver. 4GHz Frequency Band Hobby RC Receivers & Transmitters. It is an updated version of the X6B receiver, slightly smaller, lighter, has one connector for PPM/iBUS output, but does not have PWM outputs. 10 and later versions. 4GHz connectivity and easy binding capabilities. 4-Channel Receiver. It has 8 channels and can output standard PPM signal, PWM, i-BUS or S. EPPX4 Functionality. It lists various transmitter and receiver models and indicates their compatibility using check marks or X's. supporting bidirectional (2-way) transfer-back functionality. lr5a3, jrfnqx, hygv, thkhn, dmzh, v6jt, cjtp1, dn, orw, fht1,