Overview:
The RadioMaster GX15 MAX is a premium full-size radio transmitter designed for pilots of fixed-wing aircraft, gliders, helicopters and other traditional RC models. It combines a powerful STM32 H7 processor with EdgeTX, dual 2.4GHz ExpressLRS technology and high-quality AG02 CNC Hall-effect gimbals.
The GX15 MAX uses dual SX1281 transceivers to provide Gemini 2.4GHz ExpressLRS operation, with each RF path capable of up to 250mW output. Its integrated horizontal and vertical antennas provide polarisation diversity while keeping the exterior of the transmitter clean and free from external aerials. Compatible receivers can also take advantage of ultra-fast ExpressLRS update rates, including F1000 operation.
The GX15 MAX is equipped with precision CNC-machined AG02 Hall-sensor gimbals that deliver exceptional control, feel, and long-term durability. To complete the look and feel, Aluminum buttons, a CNC aluminium scroll wheel and a carbon-look case add to the distinctive style of the MAX edition.
A 3.5-inch IPS screen provides a bright, colourful touchscreen interface for model setup, telemetry and flight information. The STM32 H7 processor provides fast EdgeTX operation and rapid model switching, while 512MB of built-in flash storage and external microSD support provide flexible storage options.
A smart battery management circuit improves efficiency and extends operating time. The built-in gyroscope enables additional control inputs. Tilt-based functions can be used to trigger logical switches, control gimbal movement, or activate telemetry voice prompts- adding flexibility without additional hardware.
A built-in cooling system with a low-noise fan and aluminium heat sinks ensures stable operation during extended use and demanding environmental conditions. The USB-C interface supports charging, simulator connectivity, firmware updates, and high-speed data transfer.
The MAX version also features premium CNC aluminium controls, a low-noise cooling fan with aluminium heatsinks and interchangeable shoulder switch modules. The latter allow the physical control layout to be customised, including the option of fitting momentary buttons. Available in five colours, the GX15 MAX offers a high level of control, configuration and personalisation for demanding RC pilots.
Features:
- USB-C interface supports both charging and use on flight simulators
- Dual 2.4GHz ExpressLRS Gemini system with dual RF paths.
- Dual integrated antennas arranged horizontally and vertically for polarisation diversity.
- Supports ultra-fast ExpressLRS update rates, including F1000 with compatible receivers.
- Powerful STM32 H7 processor for fast EdgeTX operation.
- Premium AG02 CNC aluminium Hall-effect gimbals.
- 3.5-inch IPS touchscreen with 262K colours and up to 600 nits of brightness.
- Interchangeable shoulder switch modules allow the control layout to be customised.
- Shoulder switches can be replaced with optional momentary button modules.
- CNC aluminium buttons and precision scroll wheel.
- Built-in gyroscope enables tilt-based control functions.
- Built-in microphone reserved for future feature expansion.
- Low-noise cooling fan and aluminium heatsinks for efficient thermal management.
- Intelligent battery management system helps optimise power consumption.
- Built-in flash storage with external microSD card support.
- Carbon-look case provides a premium finish.
- Available in Black, Transparent Charcoal, Red, Gold and Blue.
Specification:
- Model: Radiomaster GX15 MAX
- Internal RF: ExpressLRS 2.4GHz Gemini
- RF transceivers: 2× Semtech SX1281
- RF output: 2×250mW
- Frequency: 2.400GHz
- Voltage Range: 6.6 - 8.4V DC
- Current: 850mA (at max output power)
- Frequency: 2.400GHz
- Internal RF: ExpressLRS 2.4GHz
- Channels: Max 16 channels (Receiver dependent)
- Radio Firmware: EdgeTX (version 2.12.0 or higher)
- Built-in Flash Storage: 512MB
- Cooling Fan: Built-in
- Microphone: Yes
- Built-in Motion Sensor: Yes
- MicroSD card (Not included): 32GB/FAT32 (Inserting a MicroSD card will disable the onboard flash)
- Display: 3.5-inch IPS touchscreen (480 x 320 resolution)
- Battery options (not included, see bottom of page for batteries): 7.4V 2-cell Lithium-Polymer / Two 3.7V 18650 Lithium-Ion cells / 21700 5000mAh Battery
- Connectivity: USB-C
- Gimbals: AG02 CNC Hall sensor gimbals
- Gimbal Sticks: M4
- Firmware upgrade method: USB-C UF2
- External module bay: JR-compatible
- Dimensions: 178×168×81mm
- Weight: 725g without battery
- Available colours: Black, Transparent Charcoal, Red, Gold, Blue
Included:
- 1x RadioMaster GX15 MAX Transmitter
- 1x GX15 MAX Signature Carry Case
- 1x 18650 Battery tray (batteries not included)
- 2x Replacement shoulder panels
- 1x USB-C cable
- 1x Screen protector
- 1x 1.5mm hex wrench
- 4x Low-tension gimbal springs
- 2x Gimbal stick set screws
- 4x 6mm switch delete grommets
- 1x Lanyard
- 1x GX15 manual
- 1x Sticker sheet
