Radiomaster TX15 Max ELRS 868MHz/2.4GHz

The Radiomaster TX15 Max is a versatile radio transmitter designed for both beginners and advanced pilots. It offers an excellent balance of size, comfort, and functionality. The TX15 Max is equipped with large hall-effect gimbals similar to the TX16 or Boxer models. For extended control options, it features 4 switches, 2 rotary dials, 2 buttons (replaceable with switches), and a six-position channel controlled by buttons with customizable LED backlighting. Configuration is the same as other Radiomaster transmitters, using 6 buttons and a scroll wheel. A highlight is the bright 3.5" touchscreen with 600 nits of brightness. Powered by a STM32H7 processor, the TX15 Max ensures fast response. It comes with 4GB internal memory, expandable via MicroSD. The radio runs on the fully customizable EdgeTX firmware (the successor to OpenTX). A protective carrying case is included. For expandability, the transmitter integrates a microphone and a built-in gyroscope. The gyroscope with TiltX/TiltY functions enables advanced control options, such as triggering switches, controlling camera pan/tilt, or activating telemetry simply by tilting the transmitter.

A key feature is the integrated ELRS module based on the Semtech LR1121 chip, supporting both 2.4GHz and 868MHz bands. Switching between bands is easy, allowing pilots to adapt to their needs. The 2.4GHz band is ideal for freestyle and racing with ultra-low latency, while the 868MHz band delivers long-range performance.

ExpressLRS is an open-source project, with transmitter and receiver modules produced by multiple manufacturers. It is one of the most advanced RC link systems, offering reliable long-range performance, high refresh rates, adjustable output power, Wi-Fi updates, Bluetooth connectivity, and more. Bluetooth is especially useful for simulator pilots, enabling wireless PC connections. The internal module is actively cooled with a built-in fan, while the foldable dual-band antenna ensures portability.

On the back, a standard JR module bay allows for expansion with external modules. The TX15 Max is powered by a 2S battery. The package includes a tray for two 18650 Li-Ion cells, but larger 2S batteries can also be used for longer runtime. Charging is handled via the USB-C port, which also supports firmware updates and simulator connectivity.

Compared to the standard version, the TX15 Max stands out with AG02 CNC aluminum gimbals available in anodized red, black, or gold, upgraded aluminum buttons, an aluminum scroll wheel, and a carbon-style protective case for a premium look. Integrated RGB LEDs around the gimbals provide customizable lighting effects, adjustable via LUA scripts.