DX9 Crossfire CRSF Protocol Instructions

4105 Fieldstone Rd • Champaign, IL • 61822 • 800.535.5551 • fastserve.horizonhobby.com

Method 2 – Send in your Spektrum DX9 for Serial Port Upgrade

Horizon strongly recommends sending your Spektrum radio in for service and allowing our

professional service technicians to perform the Crossfire system installation and preserve your warranty.

Click here to start the service request process. Please include a note in the service request asking for this

modification.

Simply state that you would like to have your DX9 to have the serial port added.

Once we receive your Transmitter, an authorized Spektrum Service Technician will perform the

modification, install the latest DX9 firmware that uses the Serial Port Setup menu and confirm that the

Transmitter functions properly post upgrade. Once the modification is completed, your radio will have a

common servo connector leading out the back of the radio that offers serial port signal and ground. Use

this plug to connect and communicate with your serial input module.

The cost for this modification is $75 plus shipping and is currently only offered for the Spektrum

DX9 and DX9 Black Edition transmitters. With this service your DX9 will have a male servo lead out of

the back of the transmitter and we will include an adapter used for the EXP port on a TBS Crossfire to

this lead.

Available Spektrum Crossfire Mount

There is a STL file that can be used to 3D print your own Crossfire mount that can be attached to the

back of your DX9 via Double sided tape. Makes attaching and removing the module easy and clean. The

file can be found HERE.