Radiomaster TX15 ELRS 868MHz/2.4GHz

The Radiomaster TX15 is a versatile radio transmitter designed for both beginners and advanced pilots. It offers a practical balance of size, comfort, and functionality. The TX15 features large hall-effect gimbals similar to the TX16 or Boxer models. For additional control, it provides 4 switches, 2 rotary dials, 2 buttons (which can be replaced with switches), and a six-position channel controlled by buttons with customizable LED backlighting. Configuration is identical to other Radiomaster transmitters using 6 buttons and a scroll wheel. A standout feature is the bright 3.5" touchscreen display with 600 nits of brightness. Powered by a STM32H7 processor, the TX15 delivers 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 case is included in the package. For future expandability, the TX15 integrates a microphone and a built-in gyroscope. The gyroscope, with TiltX/TiltY functions, unlocks advanced control options such as triggering switches, controlling camera pan/tilt, or activating telemetry by tilting the transmitter.

A major advantage is the integrated ELRS module based on the Semtech LR1121 chip, supporting both 2.4GHz and 868MHz bands. Switching between bands is simple, 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 offers long-range performance.

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

On the back of the transmitter, a standard JR module bay allows for expansion with external transmitter modules. The TX15 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 extended runtime. Charging is handled via the USB-C port, which also supports firmware updates and simulator connections.