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The RadioMaster GX12 Gemini-X is a high-performance radio built for pilots who fly long distances and demand a reliable link. It carries the Gemini Xrossband version of ExpressLRS, which uses dual 1,000 mW RF sections to talk on 2.4 GHz and 900 MHz at the same time. This is the black Mode 2 version.
The idea is redundancy and reach. The lower band is good at range and passing through obstacles; the higher band gives faster updates. Running both means a glitch on one does not end the flight, and it is why this radio is popular for long-range and mountain flying.
The GX01 gimbals use 3D Hall sensors in a CNC aluminium construction with folding 3 mm sticks. Storage is a 512 MB integrated flash, the display is a 128x64 monochrome OLED, and the radio supports up to 16 channels depending on the receiver. Connectivity is USB-C, and current draw ranges from 390 to 1000 mA. It can be powered from a 7.4 V two-cell LiPo, two 3.7 V 18650 cells or a 21700 5000 mAh cell.
There are also practical touches: customisable RGB indicators, modular switch panels with extra panels and delete plugs, a signature carry case, and a hydrophobic coating on the circuit board for harsh conditions.
It is an ExpressLRS radio, so plan for ExpressLRS receivers, and pick Gemini-capable ones if you want dual-band. For pilots on a budget, a single-band ELRS radio will do the same job on short flights; the Gemini-X earns its price on long-range flights where the link is the limiting factor.
2.4 GHz and Sub-G 900 MHz, transmitted together.
It has dual 1,000 mW RF.
A 7.4 V two-cell LiPo, two 3.7 V 18650 cells, or a 21700 5000 mAh cell.
Yes. It has modular switch panels, and replacement panels, delete plugs and extra switches are included.
Yes, this is the Mode 2 version.
| Brand | Radiomaster |
|---|---|
| Frequency | 2.4GHz and 900MHz Sub-G |
| Protocol | ExpressLRS |
| Selling unit | PCS |
