The Radiomaster GX12 is one of the most exciting additions to the growing range of compact FPV radio controllers. Built around the ultra-popular ExpressLRS (ELRS) protocol and designed for portability, the GX12 strikes a balance between functionality and form factor that many FPV pilots will appreciate.
In this review, we’ll explore what makes the Radiomaster GX12 a standout in the market and whether it’s the best ELRS transmitter for your needs.
Key Features of the Radiomaster GX12
The GX12 FPV radio is packed with smart design choices and hardware features, including:
- ExpressLRS Gemini built-in (dual-antenna diversity)
- Compact, gamepad-style design
- Hall effect gimbals for smooth and durable control
- 4 removable switches and 2 rotary dials
- A clear 1.3″ OLED display
- USB-C fast charging
- Runs on a single 18650 battery (not included)
- WebUI access via Wi-Fi
It’s ideal for FPV drone pilots who prefer a portable, minimalistic controller without sacrificing performance or reliability.
Compact Size, Full Performance： A Gamepad-Style FPV Radio
The Radiomaster GX12 breaks away from the traditional, bulky transmitter style. Its gamepad layout is familiar to gamers and extremely comfortable for thumb flyers and pinchers alike. Though small, it doesn’t feel cramped, thanks to its clever ergonomics and spacing.
This compact FPV radio is perfect for those who:
- Want to travel light
- Fly micro quads or wings
- Need a convenient backup transmitter
- Prefer minimal switches, but still want full functionality
Built-In ELRS Gemini – A Reliable RF System
What is ExpressLRS Gemini?
The GX12 integrates Radiomaster’s Gemini module, a dual-antenna ELRS system designed for maximum reliability. Unlike traditional single-antenna setups, Gemini provides antenna diversity, offering better resistance to signal dropouts and improved performance in dense or long-range environments.
ELRS Compatibility and Range
As a native ELRS radio controller, the GX12 supports:
- 2.4GHz ExpressLRS receivers
- Up to 1000Hz packet rates
- Dynamic RF power adjustment
- Failsafe and telemetry configuration via WebUI
GX12: Build Quality and Ergonomics
Hall Effect Gimbals – Smooth and Durable
One of the biggest surprises in the GX12 is its Hall effect gimbals. These provide ultra-smooth movement, accurate centering, and better durability compared to traditional potentiometer-based gimbals. They’re especially impressive in a radio at this price point and size.
Comfortable to Hold, Easy to Fly
With its textured grips, lightweight design (~300g without battery), and balanced weight distribution, the GX12 feels natural in your hands, even during long sessions.
It also comes with two spare switches in the box, and the modular design allows you to replace or customize switches easily—a rare feature among compact radios.
Display and User Interface
The 1.3-inch OLED screen sits at the top of the radio, offering clear visibility indoors and outdoors. The interface is operated by a scroll wheel and confirmation button, making navigation fast and easy.
Whether you’re binding a receiver, adjusting ELRS settings, or calibrating gimbals, the process is simple—even for newcomers.
Battery and Charging of Radiomaster GX12
- Powered by 18650
The GX12 uses a single 18650 Li-ion cell—a common, cost-effective power solution that’s also easy to replace. Many users already have spares from goggles or other FPV gear.
- Convenient USB-C Charging
Thanks to USB-C charging, you can power up with the same cable used for your phone or charger. Charging is quick, and the power consumption is low, giving you hours of use on a full battery.
Radiomaster GX12 Firmware, Updates, and WebUI Support
The GX12 supports the latest ExpressLRS firmware (v3.x and above) and features:
- Full Wi-Fi WebUI access for receiver settings
- Over-the-air (OTA) firmware updates
- Easy model binding via QR codes or binding phrases
This means you don’t need additional software or drivers to keep your radio updated—just connect via browser and tweak your settings on the fly.
Use Cases – Who is the GX12 Best For?
Great for Beginners
New pilots will love how easy it is to set up and use the GX12. With simple menus, ELRS compatibility, and USB-C charging, it removes many of the common pain points beginners face.
Perfect for Travel
If you attend races or fly in the field, a full-size transmitter may feel like overkill. The GX12 fits neatly in a backpack, and its size makes it ideal as a travel radio or a field backup.
Excellent for Wing Pilots and Whoop Flyers
Those flying wings, micro quads, or indoor drones will appreciate the minimal yet functional switch layout. It’s enough for arming, flight modes, and camera tilt, without excess.
Radiomaster GX12 vs Boxer vs TX16S
| Feature | GX12 | Boxer | TX16S |
| Form Factor | Ultra-compact (gamepad) | Mid-sized | Full-size |
| Protocol | Built-in ELRS Gemini | Built-in ELRS | Module-based |
| Gimbals | Hall effect | Hall effect | Hall effect |
| Switches | 4 switches + 2 dials | 8 switches + sliders | 10+ switches + touchscreen |
| Battery | 1x 18650 (not included) | 2x 18650 | 2x 18650 |
| Charging | USB-C | USB-C | USB-C |
While the GX12 doesn’t replace high-end radios like the TX16S, it fills an essential niche—a high-performance compact radio at a mid-range price point.
Radiomaster GX12: Pros and Cons
Pros:
- Built-in dual-antenna ExpressLRS Gemini
- Lightweight and compact design
- Hall effect gimbals included
- Affordable price point
- Wi-Fi WebUI for fast setup
- USB-C fast charging
- Two spare switches included
Cons:
- Fewer switches than full-sized radios
- The screen is small and monochrome (not touchscreen)
- No battery included
- Not suited for planes or complex models
A popular radio controller with an appealing mix of features, performance, and affordability is the Radiomaster GX12. Despite a few little issues, most people agree that the GX12 is a good option for novice and seasoned pilots searching for a dependable and adaptable radio.
Final Verdict – Is the GX12 Worth It?
If you’re looking for a compact FPV radio controller that performs well without breaking the bank, the Radiomaster GX12 should be at the top of your list.
It’s easy to carry, fully ELRS-compatible, and provides high-end features like hall gimbals and antenna diversity at a fraction of the cost of premium radios.
Whether you’re a beginner getting into FPV, a traveler in need of a backup, or a whoop pilot who values portability, the GX12 is one of the best ELRS transmitters in 2025.
Available now at MEPSKING： Radiomaster GX12 Radio Controller