🎮 RadioMaster GX12 Gemini-X ELRS Radio Controller – Dual-Band FPV Transmitter

Experience the next generation of FPV radio control with the RadioMaster GX12 Dual-Band Gemini-X.

Built for demanding FPV, fixed-wing and RC pilots, the GX12 combines ExpressLRS Gemini-X technology, premium CNC Hall-effect gimbals and simultaneous dual-band transmission across 2.4GHz and Sub-G 900MHz.

Unlike conventional single-band transmitters, Gemini-X can transmit across both supported frequency bands, helping provide stronger interference resistance, enhanced signal reliability and dependable control in challenging RF environments.

The GX12 features dual folding antennas, 1000Hz GX01 digital Hall gimbals, EdgeTX firmware, integrated storage and a compact folding design that is ideal for transport. RadioMaster specifies dual 1W transmission capability, up to 16 channels and compatibility with standard ExpressLRS receivers as well as Gemini Xrossband receivers.

✨ Key Features

✅ Gemini-X dual-band ExpressLRS technology

✅ Simultaneous 2.4GHz and Sub-G 900MHz transmission

✅ Dual 1000mW RF transmitters

✅ GX01 CNC aluminium 3D Hall-effect gimbals

✅ 1000Hz digital gimbal response with EdgeTX synchronisation

✅ Folding gimbal sticks for easier transport

✅ Integrated folding dual-band antennas

✅ EdgeTX operating system

✅ 512MB integrated flash storage

✅ High-contrast monochrome OLED display

✅ Programmable six-position controls

✅ Customisable RGB switch indicators

✅ Removable and interchangeable switch panels

✅ Nano and Crossfire-compatible external module bay

✅ Integrated cooling fan

✅ USB-C charging, simulator connection, firmware updates and data access

📡 Gemini-X Dual-Band Performance

The GX12 is designed around RadioMaster’s Gemini-XROSSBAND ExpressLRS platform.

It supports simultaneous operation across:

• 2.4GHz

• Sub-G 900MHz

This dual-band system is designed to improve interference rejection and maintain a dependable control link across demanding flying environments.

The GX12 remains compatible with standard 2.4GHz and 900MHz ExpressLRS receivers, while also supporting newer Gemini Xrossband receiver systems.

🕹️ Premium GX01 Gimbals

The GX12 features GX01 1000Hz CNC aluminium digital Hall-effect gimbals with folding sticks.

These precision gimbals provide:

• Smooth and accurate control

• Fast 1000Hz response

• Durable CNC aluminium construction

• Digital Hall sensing

• Convenient folding sticks for storage

• Adjustable spring tension

The transmitter ships with low-tension gimbal springs installed, with higher-tension springs included for custom adjustment.

📦 What’s Included

• 🎮 1 × RadioMaster GX12 Radio Controller

• 👜 1 × Signature Carry Case

• 🔋 1 × 18650 Battery Tray

• 🎛️ 2 × Replacement Switch Panels

• ⚫ 6 × Switch Delete Plugs

• 🔌 1 × USB-C Cable

• 🛡️ 1 × Screen Protector

• 🔧 1 × 1.5mm Hex Wrench

• ⚙️ 4 × High-Tension Gimbal Springs

• 🎚️ 1 × Two-Position Switch

• 🎚️ 1 × Momentary Switch

• 🏷️ 1 × RadioMaster Sticker Set

• 📖 1 × GX12 User Manual

🔋 Battery Information

Batteries are not included.

The GX12 supports the following compatible battery options:

• 2 × 3.7V 18650 Li-ion cells using the included battery tray

• 7.4V 2-cell LiPo battery

• Compatible 21700 5000mAh battery pack

The transmitter supports integrated 2S smart balance charging through USB-C.

🚚 Estimated Delivery

Delivery dates will be confirmed once the supplier provides the final shipping quotation.

Tracking information will be supplied after dispatch.

📋 Specifications

• Brand: RadioMaster

• Model: GX12

• Radio Mode: Mode 2

• Protocol: ExpressLRS

• Internal RF: ELRS 2.4GHz / Sub-G 900MHz

• Frequency: 2.400GHz and Sub-G 900MHz

• RF Output: Dual 1000mW

• Channels: Up to 16, receiver dependent

• Operating System: EdgeTX

• RF Firmware: ExpressLRS

• Gimbals: GX01 1000Hz CNC aluminium 3D digital Hall-effect

• Display: 128 × 64 monochrome OLED

• Internal Storage: 512MB

• Connectivity: USB-C

• External Module Support: Nano / Crossfire compatible

• Operating Voltage: 6.6V–8.4V DC

• Dimensions: 183 × 148 × 78mm

• Weight: Approximately 573g without batteries

• Colour: Black

⭐ Why Buy From SkyFleet Drones?

✔ Carefully selected premium FPV equipment

✔ Trusted brands for serious pilots

✔ Competitive UK pricing

✔ Secure checkout

✔ Friendly customer support

✔ Tracking provided after dispatch

The RadioMaster GX12 is an excellent choice for pilots seeking premium control, advanced ExpressLRS technology and dependable dual-band performance in a compact professional transmitter.