How to add Retractable Undercarriage and Voice Feedback on EdgeTX Companion

20th February 2026

Start

  • Double Click the Model you wish to change

The Model Configuration Window will appear with the Setup tab selected

Start

  • Select the Mixes Tap
  • Double click CH5 to Open the Lines configuration window

Gear Up/Down

  • Type Gear into the Name field
  • Change Source to MAX
    • TX16s – change Switch to SG↑
    • Boxer – change Switch to SD↑
  • Select OK to close the window
  • Select CH5, Right click, select Copy
  • Select CH5, Right click, select Paste (A second identical CH5 line starting with += will appear)
  • Double Click to new line
  • Change Weight Source to -100
    • TX16s – Change Switch to !SG↑
    • Boxer – Change Switch to !SD↑
  • Select OK to close the window

Add Voice Feedback

  • Select the Special Functions Tap
  • On the next blank Special Function
    • TX16s – change Switch to SG↑
    • Boxer – change Switch to SD↑
  • Change Action to Play Track (Press letter p twice for quicker access)
  • Change Parameter to geardn (Press g quicker access)
  • On the next blank Special Function
    • TX16s – change Switch to !SG↑
    • Boxer – change Switch to !SD↑
  • Change Action to Play Track (Press letter p twice for quicker access)
  • Change Parameter to gearup (Press g quicker access)

Write the Configuration back to the Transmitter

  • If the Transmitter is no longer connected to the computer, reconnect it 
    • While holding the Rudder and Aileron trims toward each other, Power On the Transmitter
    • Connect a USB cable between the Transmitter and PC
  • Select Write Models and Setting to Radio (Top of left tool bar)
  • Disconnect the Transmitter

With the Transmitter on and the Model selected

  • TX16s – Move switch SG away from you, the transmitter will say Gear Down, the gear will deploy, move the switch toward you, the transmitter will say Gear Up and the Gear will retract
  • Boxer – Move switch SD away from you, the transmitter will say Gear Down, the gear will deploy, move the switch toward you, the transmitter will say Gear Up and the Gear will retract

 

 

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