TBS Crossfire Manual

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Which transmitter is affected by this?

The older QX7 radio from FrSky with the S-Port pin at the bottom of the radio.

Newer ACCESS radios and older radios than the QX7 (with bottom S-Port pin) don’t need this hardware

mod.

How to install the inverter mod

There is a detailed how-to available at phillip seidels blog

Software mod

Instead of installing the hardware mod, you can simply lower the speed on which the radio communicates

with your radio.

Navigate in your radio settings to the 

Hardware 

tab and set the 

Max Baud

setting from 400000 to 115000.

If your radio is know to not need this soft/ hardware mod, the BaudRate setting is not available

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