SERIAL PORT PROTOCOL
Touch the Protocol drop down menu button. Select Inhibit, Cross Fire or Cross Fire 2.
Selecting the Cross Fire or Cross Fire 2 options will enable the CRFS data stream. Connecting
the Cross Fire system requires the Cross Fire serial port adaptor (SPMA3090, not included).
Consult the manufacturer’s manual for use of any external RF device. Horizon Hobby does not
provide support for external RF devices connected to the iX20 transmitter.