Unleashing the Power of the RadioMaster Nomad Dual 1 Watt Gemini Xrossband ExpressLRS Module

Launch Video

RadioMaster Nomad Features

• Compatible with all existing 2.4ghz and 900mhz ExpressLRS receivers. (See mode compatibility chart below)
• Compatible with 2.4ghz+900mhz Dual band (Gem-X) ExpressLRS receivers
• Twin Dual-band 1W transceivers
• Experience unmatched reliability with dual-band ELRS Gemini Xrossband
• ExpressLRS Gemini 2.4GHz
• ExpressLRS Gemini 900MHz
• Powerful Cooling System with dual 1-watt transceivers, the Nomad boasts serious power, complemented by an advanced cooling system to keep your module cool even on the hottest days

RadioMaster Nomad Specification

• Item: Nomad Dual Band Module with Micro Adapter
• Regulatory Domain: ISM_2.4, FCC_915
• MCU: ESP32(main), ESP32c3(aux, as ESP backpack)
• RF chip: Semtech LR1121 x 2
• Frequency Range: 2400 MHz – 2479 MHz / 903MHz – 927MHz
• Maximum packet rate: 500Hz (1000Hz coming soon in ExpressLRS V3.5)
• Minimum receiver refresh rate: 50Hz
• Module bay adapters: Micro standard 5pin socket & Nano standard 8pin socket
• Wifi Support: Yes
• Bluetooth support: Yes
• Built-in RGB light strip
• XT30 Power supply voltage: DC 6V – 16.8V
• Weight: 87.20g (with antenna) /  71.10g (without antenna)
• Dimension: 80*45*40mm (without antenna)

Dual-Band Domination for RC Enthusiasts

We are proud to introduce what is arguably the most advanced transmitter module available today for long-range and high-performance remote-control aircraft: the RadioMaster Nomad Dual 1 Watt Gemini Xrossband ExpressLRS Module. Engineered with cutting-edge RF hardware and a flexible protocol infrastructure, this module represents a leap forward in range, resilience and versatility. In this article we’ll dive deeply into its specifications, features, compatibility, setup and practical usage, giving you everything you need to decide and get maximum benefit.

Why Choose the Nomad Module?

Dual-Band Performance (2.4 GHz + 868/915 MHz)

This module uses dual transceivers that support both conventional 2.4 GHz and sub-GHz (868 / 915 MHz) bands. According to manufacturer documentation, it features frequency ranges of 2400 MHz–2479 MHz and 903 / 927 MHz depending on region. Rotorama+1
This dual-band capability means you can operate in challenging RF environments or long-range scenarios by selecting the appropriate band or even use both bands simultaneously in Xrossband mode — essentially giving you the best of both worlds.

Gemini Xrossband Protocol: Simultaneous Transmission

The “Gemini Xrossband” terminology refers to the ability of the Nomad to transmit on both bands at once, i.e., one transceiver on 2.4 GHz and the other on 868/915 MHz simultaneously. This dramatically improves link reliability and resilience to interference. Rotorama+1
For pilots flying in RF-dense environments (e.g., competitions, near other transmitters) or long-range flights where signal drop-out is critical, that simultaneous dual-band operation can be a game-changer.

RadioMaster Nomad High-Power Output: 1 W per Band

With a specified output of up to 1 W (1000 mW) per band, this module provides exceptional transmit power that can help push your link further than standard modules. amainhobbies.com+1
Such power must be used responsibly, observing local regulations and ensuring proper antenna setups, but for long-range applications this is a strong advantage.

Advanced Hardware: Semtech LR1121 ×2, ESP32 MCUs

Under the hood the Nomad uses dual Semtech LR1121 RF chips, one for each band. amainhobbies.com+1
Additionally the module uses an ESP32 microcontroller (main) and an ESP32-C3 (as a backpack auxiliary) for management of WiFi, Bluetooth and firmware updates. Rotorama
This hardware pedigree means the module is not just raw power — it’s smart, upgradable and ready for future protocol refinements.

RadioMaster Nomad Build Quality & Cooling

The module sports an aluminium housing with active cooling design — a necessary feature given the 1 W per band output. amainhobbies.com+1
Also included are dual-band antennas (one for each band), and both Nano and JR-bay adapters for broad radio integration. Rotorama+1
Weight is approximately 87.20g with antenna (71.10g without antenna) and dimensions 80×45×40 mm (without antenna). RadioMaster RC+1

Detailed Specification Breakdown

Let’s examine the key specs in depth:

Compatibility & Integration

What Radios Does It Fit?

Because the Nomad module includes both Nano and JR bay adapters, it is compatible with many popular transmitter systems such as those using JR or Nano style module bays. Users should verify that their radio supports the size and pin-out (micro 5-pin or nano 8-pin) required. readymaderc.com

What Receivers & Protocols?

The core protocol is ExpressLRS (ELRS). The module supports ELRS receivers in both 2.4 GHz and 868/915 MHz bands. For true dual-band advantage you’ll want a “Gemini” dual-band receiver or at least a matching sub-GHz or 2.4GHz receiver that fits your use case. amainhobbies.com+1
Examples: The module works seamlessly with things like the RadioMaster DBR4 Dual‑Band Gemini Xross Receiver in dual-band mode.

Setup & Firmware

Ensure your transmitter radio’s firmware supports ELRS and that the module’s firmware is up to date. Use WiFi/Bluetooth capabilities of the Nomad module to flash firmware updates, configure output power, select band modes (pure 2.4GHz, pure sub-GHz, or Gemini Xrossband) and adjust packet rates.
Also ensure correct regulatory domain settings — e.g., ISM_2.4 for 2.4GHz, FCC_915 for 915 MHz. amainhobbies.com

Real-World Performance & Use-Case Scenarios

Long Range & Interference Immunity

The dual-band simultaneous mode gives you two independent pathways — if one band sees interference or multipath issues, the other band still carries the link. Many users on FPV forums highlight this benefit:

“At that point go with gemini, it can switch between 2.4 GHz and 915 MHz…” Reddit
This is especially beneficial for long-range flights, cross-country FPV, or flying near other RF noise sources (e.g., drone racing, populous areas).

High Packet Rate for Fast Response

With support for up to 500 Hz packet rate (and 1000 Hz incoming) the module offers very low latency and high responsiveness. This benefits dynamic flying (e.g., wing, airplane, drone) or applications requiring telemetry updates at high frequency. getfpv.com+1

Power & Thermal Considerations

Given the 1 W output power per band and the aluminium housing with active cooling, the Nomad is built for demanding use. However, when deploying on a radio transmitter, ensure your power supply (6–16.8 V) is stable and that the module has enough airflow for cooling. Overheating or insufficient power can reduce performance or cause module instability.

Antenna Setup & Mounting

Since you’ll be operating dual-band, ensure your antennas are correctly matched to each band: one optimized for 2.4 GHz, another for 868/915 MHz. The module comes with dual-band antennas but placement and orientation still matter. Make sure your transmitter radio bay can accommodate the module size (80×45×40 mm) and consider weight / balance impact (≈87 g).

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1S = 1 cell  = 3.7V
2S = 2 cells = 7.4V
3S = 3 cells = 11.1V
4S = 4 cells = 14.8V
5S = 5 cells = 18.5V
6S = 6 cells = 22.2V

For example, we call a 14.8V battery a “4-cell” or “4S” battery.

LiPo battery is designed to operate within a safe voltage range, from 3V to 4.2V. Discharging below 3V could cause irreversible performance loss and even damage to the battery. Overcharging above 4.2V could be dangerous and eventually cause a fire.

However, it’s advisable to stop discharging when it reaches 3.5V for battery health reasons. For example for a 3S Lipo, the max voltage is 12.6V, and you should land when the voltage reaches 10.5V (at 3.5V per cell).