Radiomaster Nomad Dual Band Gemini Xrossband ExpressLRS Module Instruction Manual

1. Introduction

The Radiomaster Nomad is a high-performance Dual Band Gemini Xrossband ExpressLRS Module designed for advanced radio control applications. It features dual 3rd-generation Semtech LR1121 transceivers, enabling simultaneous operation on both 2.4GHz and 868/900MHz frequencies using the innovative Gemini Xrossband protocol. This technology significantly reduces the risk of packet loss due to interference, ensuring robust and reliable communication. Equipped with dual 1-watt transceivers, the Nomad offers exceptional range and superior interference rejection, making it suitable for demanding environments and extended flight distances. The module also includes both micro and nano module adapters, ensuring broad compatibility with most radio transmitters available today.

Image 1.1: Radiomaster Nomad ExpressLRS Module highlighting its dual-band capability, twin 1-watt power, dual LR1121 transceivers, and dual-band antennas.

2. Package Contents

Verify that all items listed below are present in your package:

• 1 x Nomad Dual Band Module with Micro Adapter
• 1 x Nano Adapter
• 2 x Dual Band 2.4GHz / 900MHz Antennas

Image 2.1: Visual representation of the items included in the Radiomaster Nomad package: the module, micro adapter, nano adapter, and two dual-band antennas.

3. Product Overview

The Nomad module features a rugged aluminum housing for durability and is equipped with an efficient cooling system to maintain optimal performance during operation. It also supports WiFi and Bluetooth connectivity, and is Mavlink ready, optimized for 1000Hz sub-GHz for rapid data communication.

Image 3.1: Overview of the Radiomaster Nomad module's construction and features, including its robust aluminum housing, cooling system, wireless connectivity, Mavlink readiness, and the included micro and nano adapters.

4. Setup and Installation

4.1 Attaching Antennas

Carefully screw the two dual-band antennas onto the SMA connectors located on the top of the Nomad module. Ensure they are finger-tight to prevent signal loss but do not overtighten.

4.2 Module Adapter Installation

The Nomad module comes with both Micro and Nano adapters to ensure compatibility with a wide range of Radiomaster transmitters. Select the appropriate adapter for your specific radio.

• Micro Adapter: Compatible with radios such as TX16S MKII, Boxer, and TX12 MKII.
• Nano Adapter: Compatible with radios such as Pocket and MT12.

Slide the Nomad module into the chosen adapter, ensuring the pins align correctly. Then, insert the assembled module and adapter into the external module bay of your compatible Radiomaster transmitter.

Image 4.1: Chart illustrating the compatibility of the Micro and Nano adapters with various Radiomaster radio transmitters.

5. Operation

5.1 Gemini Xrossband Protocol

The Nomad module utilizes the advanced Gemini Xrossband protocol, which allows the transmitter to send packets on both 2.4GHz and 868/900MHz bands simultaneously. This dual-band transmission strategy enhances signal reliability and reduces the likelihood of packet loss, especially in environments with high interference.

Image 5.1: Diagram detailing the use of third-generation Semtech LR1121 RF transceivers and the Gemini Xrossband (Gem-X) protocol for 2.4GHz, 900MHz, and dual-band operation.

5.2 Frequency Ranges

The module operates within the following frequency ranges:

• 2.4GHz Band: 2400 MHz - 2479 MHz
• 868/900MHz Band: 903 MHz - 927 MHz

Ensure your receiver is configured to operate on the same frequency band as the Nomad module for proper communication.

6. Maintenance

To ensure the longevity and optimal performance of your Radiomaster Nomad module, follow these general maintenance guidelines:

• Keep the module clean and free from dust and debris. Use a soft, dry cloth for cleaning.
• Avoid exposing the module to extreme temperatures, direct sunlight, or high humidity.
• Do not attempt to disassemble the module, as this may void the warranty and cause damage.
• Ensure antennas are securely attached before each use.

7. Troubleshooting

If you encounter issues with your Radiomaster Nomad module, consider the following:

• No Signal/Poor Range:
  • Verify that antennas are correctly and securely attached.
  • Ensure the module is properly seated in the radio's module bay.
  • Check that the radio and module firmware are up to date and compatible.
  • Confirm that the receiver is bound to the module and operating on the correct frequency band.
• Module Not Powering On:
  • Ensure the radio's module bay is providing power.
  • Check for any physical damage to the module or its connectors.
• Intermittent Connection:
  • Check for potential sources of interference in your operating environment.
  • Ensure the module's cooling system is not obstructed.

For persistent issues, refer to the official Radiomaster support resources or contact customer service.

8. Technical Specifications

Image 8.1: Diagram showing the physical dimensions of the Radiomaster Nomad module.

9. Warranty Information

The product is covered by a warranty for the receiver component. For specific details regarding warranty terms, duration, and claim procedures, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your proof of purchase for warranty validation.

10. Support

For further assistance, technical support, or inquiries regarding the Radiomaster Nomad Dual Band Gemini Xrossband ExpressLRS Module, please visit the official Radiomaster website or contact Xiangtat customer service. Ensure you have your product model number and purchase details ready when seeking support.