Is the receiver suitable for micro drones? What are its dimensions/weight?

With ultra-compact dimensions (20×15mm) and lightweight design (~5g including antennas), the XR3 Nano features castellated pads for easy integration. Perfect for micro FPV drones, sub-3" builds, and racing quadcopters.

Is it compatible with other ExpressLRS transmitters? What protocol version is required?

Fully compatible with all ExpressLRS ecosystem transmitters supporting version 3.x protocol (e.g., Radiomaster, TBS). Ensure matched firmware versions between transmitter and receiver for optimal performance.

How to choose between 2.4GHz/900MHz/Dual-Band configurations? Can I upgrade later?

Single-band suits dedicated use cases (racing/long-range), while dual-band offers operational flexibility. All variants feature removable antennas - additional frequency-specific antennas (including dual-band) can be purchased separately, enabling cost-effective band migration without buying a new receiver.

What frequency bands does the XR3 Nano support? Can it use 2.4GHz and 900MHz simultaneously?

The XR3 Nano operates on either 2.4GHz (ideal for high refresh rate scenarios) or Sub-G 900MHz (optimized for extended range). Users can select between single-band (2.4GHz/900MHz) or dual-band variants. The dual-band version allows software-based frequency switching without antenna replacement, but only one band operates at a time.

radiomaster xr3 nano multi frequency antenna diversity expresslrs receiver

Radiomaster XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

About The XR3 Receiver:

The XR3 Receiver is a versatile, ultra-compact ExpressLRS receiver, measuring just 20 x 15mm. Powered by the advanced third-generation Semtech LR1121 transceiver, the XR3 operates seamlessly on 2.4GHz OR Sub-G 900MHz bands. Whether you're flying on 2.4GHz or 900MHz, the XR3 delivers exceptional range and sensitivity in a small, lightweight package — perfect for any build. With the reliability of ExpressLRS, you can focus on flying without worrying about link quality.

Designed for convenience, the XR3 features built-in Wi-Fi for effortless configuration and firmware updates. Access and manage settings through an intuitive WebUI on your PC or mobile device with ease.

For more details and support, visit expresslrs.org.

Radiomaster

$ 23.99 ~~$46.99~~

-49%

5 | 100+Sold

Options (3)

2 x Dual / Band

2 x 2.4GHz

2 x SubG 900MHz

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Estimated Transit Time: 15-20 Days.

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Reviews (9)

A****m

Top tier receiver, small with great capability. reliability is like on next level.

Model：2 x Dual-Band
n*******y
Purchased 2 times
Very good receiver. Can fly long distances. I recommend it to everyone!

Model：2 x Dual-Band Replied by MEPSKING:Thank you for your great feedback and recommendation! We’re glad to hear you’re satisfied with the receiver. Wishing you smooth, safe, and enjoyable flights ahead!
n*******y
Purchased 2 times
I have several of these receivers. They are very good! Thank you MEPS!

Model：2 x Dual-Band Additional reviews after 31 days
Very good. You can take it very far.