At 10 december 2024, RadioMaster released the new RadioMaster GX12 radio controller with built-in Dual Band transmitter that works with ExpressLRS Gemini.
This new transmitter features a Dual-Band Dual 1W (max output, FCC region only) Gemini Xrossband module for unmatched range and reliability. Integrated folding dual-band antenna’s work on both 2.4GHz and sub-G 900MHz frequencies. New GX01 Gimbals are fully CNC aluminum and feature a frequency of 1000Hz that works with EdgeTX sync. The Gimbal sticks are foldable making transportation convenient. A removable switch panel and two DIY SMA ports give the option the customize the antenna’s and allow for easy switch changes to suit your preferences. The OLED display gives a crisp and clear image and a high contrast, easy to read in sunny environments.

Currently, the RadioMaster GX12 transmitter does not yet have CE certification. As a result, import and use of the GX12 within the EU are presently prohibited.
Once CE certification is obtained, we will promptly begin stocking the RadioMaster GX12.
Built-in 512MB high speed flash storage means that there’s no need anymore for SD cards. Now there’s only once USB-C port that features both charging and data features. The 6 position switch on the front of the transmitter is individually programmable and integraded RGB leds are added to the 6 position and SA/SD switch. To protect the mainboard as best as possible, the PCB did got a hydrophobic nano coating.
RadioMaster GX12 Specifications
- Size: 183*148*78mm
- Weight: 573g
- Frequency: 2.400GHz and Sub-G 900MHz
- Internal RF: ELRS 2.4GHz / Sub-G 900MHz
- Supported Protocols: Express-LRS
- Cooling Fan: Yes
- Antenna: Dual folding 2.4GHz/ Sub-G 900MHz Omni directional
RF: (Dual 1,000mW | Dual band XROSSBAND ELRS) - Voltage Range: 6.6 – 8.4V DC
- Current: 390mA – 1000mA (Depending on Rf output)
- Radio Firmware: EdgeTX (Transmitter) / ELRS (RF module)
- Channels: Max 16 channels (Receiver dependent)
- Battery: 7.4V 2-cell Lithium-Polymer / Two 3.7V 18650 Lithium-Ion cells / 21700 5000mAh Battery (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