Radiomaster Boxer 2.4G 16ch ELRS Transmitter Instruction Manual

1. Introduction

The Radiomaster Boxer is a compact, ergonomic, and powerful radio control transmitter designed for precision control in various RC applications. It features full-size Hall effect gimbals and an intuitive button layout, making it an ideal choice for pilots seeking comfort and functionality without compromising on size.

This transmitter comes preinstalled with the EdgeTX operating system, leveraging cutting-edge software with class-leading hardware. It is available with an internal 2.4GHz ExpressLRS (ELRS) module, offering high-power, fan-cooled operation for reliable long-distance control, minimal latency, and high refresh rates. Alternatively, a 4-in-1 Multi-module (CC2500, NRF24L01, A7105, CYRF6936) or CC2500-only version is also available.

The Boxer is powered by a robust STM32F407VGT6 processor with 1MB Flash and 192KB RAM, ensuring smooth performance. Its oversized battery compartment accommodates a 2S 6200mAh pack, providing up to 20 hours of operation (batteries not included).

2. Safety Information

Please refer to this instruction manual before using the Radiomaster Boxer transmitter. Adhere to all safety guidelines to ensure safe operation and prevent damage to the device or injury to yourself and others.

• Always ensure the antenna is properly installed before powering on the radio.
• Use only compatible batteries and charging devices.
• Do not disassemble or modify the transmitter.
• Keep the device away from water and extreme temperatures. This device is not water-resistant.
• Always check for throttle and switch warnings before flight.

3. What's in the Box

Image: Radiomaster Boxer Transmitter with its included carry case and accessories.

Your Radiomaster Boxer package includes the following items:

• 1 x Radiomaster BOXER Radio Transmitter
• 1 x Signature Carry Case
• 1 x T Antenna
• 1 x USB-C Cable
• 1 x Gimbal Protector

4. Setup

4.1. Antenna Installation

Before powering on your Radiomaster Boxer, ensure the T-shaped antenna is securely installed. The antenna screws into the connector located at the top rear of the transmitter.

Image: Proper installation of the T-shaped antenna.

4.2. Battery Installation

The Radiomaster Boxer features an oversized battery compartment designed to accommodate a 2S 6200mAh Li-Po battery pack for extended use. Batteries are not included and must be purchased separately. The transmitter also supports a battery pack for AA batteries as an alternative.

Image: Rear view of the transmitter with the battery compartment.

To install the battery:

1. Open the battery compartment cover on the back of the transmitter.
2. Connect the battery's power connector to the corresponding port inside the compartment.
3. Carefully place the battery into the compartment.
4. Close the battery compartment cover, ensuring it clicks securely into place.

4.3. SD Card Slot

The transmitter includes a redesigned SD card slot with a pre-loaded SD card. This is essential for the EdgeTX operating system and for storing model configurations and other data.

Image: Location of the SD card slot.

5. Operating Instructions

5.1. Powering On/Off

To power on the transmitter, press and hold the power button located centrally above the screen until the boot sequence begins and the screen displays 'EdgeTX'. To power off, press and hold the power button again until the shutdown sequence completes.

5.2. Controls Overview

The Radiomaster Boxer features a comprehensive set of controls for precise operation:

Image: Detailed diagram of the Radiomaster Boxer's controls.

• Gimbals: Full-size Hall effect gimbals provide smooth and precise control for pitch, roll, yaw, and throttle.
• Switches: Multiple switches (SA, SB, SC, SD, SE, SF) are available for various functions, including momentary and latching types.
• Buttons: Dedicated buttons for SYS (System), RTN (Return), PAGE+/- (Page Navigation), and TELE (Telemetry) allow for easy menu navigation and function access.
• Scroll Wheel: A scroll wheel on the right side facilitates quick navigation through menus and settings.
• Trim Buttons: Fine-tune control inputs using the trim buttons located around the gimbals.

5.3. EdgeTX Operating System

The EdgeTX operating system offers extensive customization and functionality. Use the SYS button to access system settings, and the PAGE buttons and scroll wheel to navigate through menus and adjust parameters. Refer to the official EdgeTX documentation for detailed instructions on advanced features and model setup.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the transmitter's exterior. Avoid using harsh chemicals or solvents.
• Storage: Store the transmitter in its included carry case in a cool, dry place when not in use. Remove the battery if storing for extended periods.
• Firmware Updates: Regularly check the Radiomaster website for firmware updates for the EdgeTX operating system to ensure optimal performance and access to new features.
• Gimbal Care: The Hall effect gimbals are designed for durability, but avoid exposing them to excessive dust or debris. The included gimbal protector should be used during transport.

7. Troubleshooting

• Transmitter not powering on: Ensure the battery is correctly installed and fully charged. Check the battery connections.
• No signal to receiver: Verify that the internal module (ELRS, 4-in-1, or CC2500) is correctly configured and bound to your receiver. Check antenna connection.
• Switch/Throttle Warning: If a warning appears on the screen, ensure all switches are in their default positions and the throttle stick is at its lowest point before powering on.
• Screen issues: If the screen is unresponsive or displaying incorrectly, try restarting the transmitter. If the issue persists, consult the EdgeTX documentation or Radiomaster support.

8. Specifications

Image: Radiomaster Boxer dimensions: 235mm height, 178mm width, 76.7mm depth.

9. Warranty and Support

For warranty information and technical support, please refer to the official Radiomaster website or contact your authorized dealer. Keep your purchase receipt as proof of purchase for any warranty claims.

Online resources, including firmware updates and detailed manuals, are often available on the manufacturer's website.