RadioMaster GX15 Gemini 2.4GHz ELRS Radio Controller

The RadioMaster GX15 combines Gemini 2.4GHz ExpressLRS with a top-mounted touchscreen and V6 Hall-effect gimbals for aircraft, glider and helicopter pilots. Choose White, Blue, Yellow, Red or Green from the color selector. This is the standard GX15, not the GX15 MAX with AG02 gimbals.

Before ordering: batteries are not included. Use a compatible 2.4GHz ExpressLRS receiver; Gemini and F1000 require matching receiver support. No fixed flight range is guaranteed.

Key Features

• ✅ Gemini 2.4GHz ELRS — Dual SX1281 transceivers and integrated antennas support a matched Gemini receiver setup.
• ✅ V6 Hall Gimbals — Hall-effect sensing provides precise stick input, with M4 stick ends and adjustable gimbal travel.
• ✅ Top-Mounted Touchscreen — The 3.5-inch IPS display keeps telemetry and timers above your hands, with up to 600-nit brightness.
• ✅ STM32 H7 Processing — Runs EdgeTX 2.12.0 or later, with 512MB onboard flash and optional microSD storage.
• ✅ Configurable Controls — Replaceable shoulder modules and a motion sensor offer additional control-layout options.
• ✅ USB-C Connectivity — Supports charging, simulator use, data transfer and UF2 firmware updates, with active cooling for the radio.

GX15 color lineup — available at SoarSky

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Official Launch Video

RadioMaster RC: GX15, A New Perspective. Official launch video, not an independent review.

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Specifications

Source: RadioMaster specifications and product graphics in the existing listing. No SoarSky range or runtime test is claimed.

GX15 dimensions — available at SoarSky

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Compatibility & Setup

• Match the internal 2.4GHz ELRS link to the receiver firmware and operating mode. Gemini and F1000 are not universal receiver features.
• Install a compatible battery and follow the manual for charging and setup. A battery tray is not a supplied battery.
• Calibrate controls, configure the model and failsafe, and perform a range check before use.
• USB-C supports simulator connection; simulator software is separate.
• mLRS is an alternative firmware path, not an extra factory-installed RF band. The mLRS project's other frequencies do not make the GX15 internal hardware a 433/868/915MHz transmitter.
• The microphone is reserved for future expansion; it is not a promise of active voice-control features.

Download the GX15 user manual

Top-mounted touchscreen — available at SoarSky

Front control layout — available at SoarSky

Processor platform — available at SoarSky

Gemini transceivers — available at SoarSky

Integrated antenna arrangement — available at SoarSky

V6 gimbal reference — available at SoarSky

Cooling system — available at SoarSky

USB-C functions — available at SoarSky

Choose your color in the selector — available at SoarSky

Motion-sensor input reference — available at SoarSky

Hardware and battery-bay reference; batteries not included — available at SoarSky

Button and connection layout — available at SoarSky

Standard internal RF protocol reference — available at SoarSky

Alternative firmware reference, not additional built-in RF bands — available at SoarSky

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Package Includes

• 1 × GX15 radio controller in the selected color
• 1 × GX15 signature carry case
• 1 × 18650 battery tray
• 2 × replacement shoulder panels
• 1 × USB Type-C cable
• 1 × screen protector
• 1 × 1.5mm hex wrench
• 4 × low-tension gimbal springs
• 2 × gimbal stick set screws
• 4 × 6mm switch-delete grommets
• 1 × lanyard
• 1 × RadioMaster sticker set
• 1 × GX15 manual
• 1 × inventory card

Batteries and microSD card are not included. The package list does not include a receiver.

Package reference — available at SoarSky

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FAQ

Which receivers can I use?

Use compatible 2.4GHz ExpressLRS receivers. Gemini and F1000 require matching receiver support.

Are batteries included?

No. The 18650 battery tray is included, but batteries are sold separately.

Which gimbals are fitted?

The standard GX15 uses V6 Hall-effect gimbals, not the GX15 MAX AG02 configuration.

Does it need a microSD card?

It has 512MB onboard flash. An optional 32GB FAT32 microSD card disables onboard flash when inserted.

Which firmware is required?

EdgeTX 2.12.0 or later.

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Build a matched GX15 flight setup. Choose your color, add a suitable battery and compatible receiver, and configure the model before flying.