There is a debate among those in the FPV world between: 2.4GHz and 900MHz For ~ ExpressLRS Radio links are ongoing, each with its own advantages. 2.4GHz Provides faster packet rates and lower latency. 900MHz Provides better penetration and range. With the launch Radiomaster NomadNo more need to choose, this dual band ExpressLRS This module provides the flexibility to use both frequencies individually or simultaneously.
Learn more about ExpressLRS in this guide: https://oscarliang.com/setup-expresslrs-2-4ghz/
Where to buy
Get the Radiomaster Nomad module here:
Buy the Radiomaster DBR4 receiver here:
What is Radiomaster Nomad?
that Radiomaster Nomad It’s dual band ExpressLRS Modules that integrate innovative features Gemini-X (Crossband) You can use technology to make it work for both. 2.4GHz and 900MHz(868/915MHz) The frequencies can be transmitted simultaneously or separately. Both frequencies can be up to 1 watt Provides a variety of RF outputs to suit different flight conditions.
2.4GHz offers faster packet rates of up to 1000Hz, providing ultra-low latency essential for racing and fast-paced flying, while 900MHz (868/915MHz) offers excellent penetration and range, making it ideal for flying over obstacles or in long-range scenarios.
that nomadThe ability to switch between these bands or use both bands simultaneously makes this one of the most versatile bands. ExpressLRS Modules available on the market. Gemini FashionData packets are transmitted in parallel across both bands, doubling the chances of maintaining a reliable connection, especially in environments with high interference.
It is important to note that you need to configure the correct frequency range. 900MHz Depending on your location: 868MHz Europe and 915MHz This is for the US. Make sure you set it up correctly, otherwise it may interfere with your local cellular network. ExpressLRS Settings are important.
Take a closer look at the Radiomaster Nomad
that Nomad module It comes with a dual band antenna designed to support both. 2.4GHz and 868/915MHz Frequency. This adjustable antenna allows horizontal or vertical positioning depending on your settings.
The antenna connector is RP-SMA.
On the bottom there is an XT30 connector for supplying external power (2S to 4S) without draining the radio’s internal battery, and a USB-C port for firmware updates.
The RadioMaster Nomad comes with JR and Lite module adapters, making it compatible with a wide range of radios, including the Radiomaster Boxer and Zorro. The Nano adapter was not included with our initial review unit, but is expected to be part of the final retail package, ensuring full compatibility with smaller radios such as the RadioMaster Zorro.
However, when installed in the Boxer, the module feels a little loose in the bay. It is securely locked in and there is no risk of it falling out during flight, but it makes a rattling noise when you shake the radio.
New packet rates
ExpressLRS It offers a variety of packet rates, allowing you to balance latency and range to meet your specific needs. For example: 50Hz It offers great range but has longer latency. 1000Hz It offers very low latency at the expense of range. Radiomaster Nomad Supports multiple packet rates so you can tune performance to your needs.
that nomad Introducing a new packet rate optimized for low latency and long-range capabilities. 2.4GHzYou can access the standard ExpressLRS Including packet rate 50Hz, 100Hz fulland 500Hz. for 868/915MHzThe module supports: 250Hz Packet rates are faster than before. 900MHz Modules reaching maximum 200Hz.
For dual band operation, X150Hz and X100Hz full It provides an ideal balance of range, stability and control precision. With these packet rates, the module can transmit at both 2.4GHz and 868/915MHz At the same time, link stability is improved.
DBR4 Receiver: Dual Band Capability
To get the most out of Nomad’s dual-band Gemini system, you’ll need a receiver that supports both 900MHz and 2.4GHz, like the Radiomaster DBR4. Without a dual-band receiver, the Nomad will function as a single-band receiver, but you won’t get all the benefits of the Gemini X.
that DIVAL 4 The receiver is slightly larger than a typical receiver. ExpressLRS The receiver is better because of the dual RF chipset and advanced features. It is designed especially for users who need a solid and stable link in environments with high RF noise or on long-distance flights.
4 antennas (2) 2.4GHz And two of them 868/915MHz—This setting ensures maximum stability when using both frequencies simultaneously.
Real Applications
that nomad Its outstanding performance in a wide range of scenarios makes it a strong choice for many types of FPV pilots.
- Racer: Most racers fly in open fields with relatively short ranges, so they may not benefit much from dual-band capabilities. Standard 2.4GHz ExpressLRS By setting 1000Hz The refresh rate is the most optimal and cost-effective choice for racing.
- long distance pilot: that 900MHz The band offers particularly good range and penetration. Gemini X modeBoth 900MHz and 2.4GHz Work together to keep your wireless signal strong even in difficult environments. Dual-band capability may not increase maximum range, but should improve the stability of your wireless control link.
- Casual Flyer: For those who don’t fly long distances, a dual-band system might be overkill. Personally, I 10km Standard flight 2.4GHz ELS Systems using a single antenna 250mW The output power was capable, though I don’t think I would use it. Gemini Crossband The system often provides additional flexibility and stability in challenging conditions. For most people, 2.4GHz ELS (Non-diversity) is sufficient, if you need wider range, just lower the packet rate. 250Hz or 150Hz.
Final Thoughts: Is the Radiomaster Nomad the Best ELRS Module?
that Radiomaster Nomad It offers incredible flexibility and allows for transitions. 2.4GHz and 900MHz Or use both at the same time for maximum stability. However, this may not be an upgrade for everyone. For most users, Gemini This feature may be overkill for the standard. LSRS The settings should meet your needs.
That means if you’re looking for greater flexibility and stability across a range of flight styles, from long-distance exploration to low-latency racing, nomad It’s worth considering. DBR4 receiverYou get a powerful and reliable system that can handle a wide range of flight conditions, from low-latency racing to long-haul adventures.
Get the Radiomaster Nomad module here:
Buy the Radiomaster DBR4 receiver here:
