Remote control overview
Batteries and charging
Battery and Charging Information for the GX12
The GX12 has a built-in USB-C smart balance charging function designed specifically with 3.7V lithium batteries. It supports:
- 2x 3.7V Li-ion 18650 batteries or 2x 3.7V Li-Poly batteries (2S 7.4V LiPo battery pack).
- The nominal voltage for each cell is 3.7V, with a fully charged voltage of 4.2V per cell.
Important Charging Guidelines:
- Do Not Use LiFe battery packs or 18650 Li-ion batteries with a nominal voltage of 3.6V and a fully charged voltage of 4.1V. Using incorrect batteries may damage the charger or pose a fire hazard.
- Ensure Non-Protected Li-ion Batteries: If using Li-ion batteries, ensure they are nonprotected.
- Regularly check the voltage and condition of your batteries.
- Never Charge Unattended: Always charge in a safe environment, away from flammable materials.
- Avoid Charging if the Remote is Wet or Damaged: Only charge when the device works properly.
- Polarity Matters: Do not charge with reversed polarity, which can cause severe damage.
Disclaimer: RadioMaster is not responsible for any damages or consequences resulting from the improper use or
misuse of this product.
A：L-R Mode-1 and Mode-2:
Turn clockwise to disable self-centering (Throttle) / Turn counterclockwise to enable self-centering (Elevator)
B：Up-Down tensions adjustment:
Turn clockwise to increase vertical stick tension / Turn counterclockwise to decrease tension
C：Left-Right tension adjustment:
Turn clockwise to increase horizontal stick tension / Turn counterclockwise to decrease tension
D：Throttle stick tension adjustment:
Turn clockwise to increase throttle stick tension / Turn counterclockwise to decrease tension
E：Upper and lower Angle travel (38-60 degrees) :
Adjust the screw clockwise, and the Angle becomes smaller.
Adjust the screw counterclockwise to increase the Angle.
Model and Protocol Selection
The GX12 is equipped with a built-in dual-band, dual-frequency ExpressLRS RF module, offering compatibility with a wide range of receivers:
- 2.4GHz receivers
- Sub-GHz (900MHz) receivers
- Gemini-Xross dual-band receivers
Packet Rate Selection:
To select the appropriate Packet Rate on your GX12 remote control, follow these options based on the receiver type:
- 50Hz-500Hz 2.4G: For binding with any ELRS 2.4GHz receiver.
- 50Hz-200Hz Low Band: This is for binding with any ELRS Sub-GHz (900MHz) receiver.
- X100 and X150: For use with Gemini Xross dual-band receivers.
- DK250/DK500/K1000: These are new FSK high-speed modes for LR1121-based receivers.
For a detailed receiver compatibility chart, visit the RadioMaster manuals page.
Binding Instructions for ExpressLRS
Follow these steps to bind your GX12 with an ExpressLRS receiver:
- Turn off the transmitter.
- Cycle power to the receiver three times. The receiver LED should flash twice, indicating bind mode.
- Turn on the transmitter, long-press the SYS button, and navigate to the ExpressLRS LUA under the TOOLS menu.
- Scroll down to [Bind] and press enter.
- The LED on the receiver will turn solid, indicating a successful bind.
Notes
The GX12 runs on the powerful EdgeTX platform, known for its advanced programming, customization, and mixing capabilities. Whether you’re a novice or an experienced user, EdgeTX provides a wide range of features to help you customize your remote control experience according to your specific requirements.
To fully explore the potential of EdgeTX, including step-by-step instructions for installation, programming, and advanced functions, please download the comprehensive software installation guide from the links provided below:
EdgeTX Official Site: https://edgetx.org
RadioMaster Support: https://www.radiomasterrc.com
Specifications
Item: GX12 Radio
Size: 183*148*78mm
Weight: 573g
Frequency: 2.400GHz and Sub-G 900MHz
Internal RF: ExpressLRS 2.4GHz / Sub-G 900MHz
Supported protocols: ExpressLRS
Cooling fan: YesAntenna: Dual folding 2.4GHz/ Sub-G 900MHz
Voltage Range: 6.6 – 8.4V DC
Control distance: Max 2km
Current: 390mA – 1000mA, 8.0V(Mode and Power level dependent)
Radio Firmware: EdgeTX (Transmitter) / ExpressLRS (RF module)
Channels: Max 16 channels (Receiver dependent)
Battery: 7.4V 2-cell Lithium-Polymer / Two 3.7V 18650 Lithium-Ion cells (batteries not included)
Charging: 2s Smart Balance Charging
Connectivity: USB-C
Display: 128*64 Monochrome OLED display
Gimbal: GX01 1000Hz, 3D Digital CNC Hall Effect Gimbal with folding sticks
Gimbal sticks: 3mm
External module: Nano / Crossfire compatible
Upgrade Method: USB / EdgeTX Companion PC software
Memory: 512Mb Integrated Flash
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