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

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24-Month Warranty | 2 Years Full Protection
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Top highlights

Antenna Diversity for improved signal stability and range.
ExpressLRS 2.4GHz or Sub-G 900MHz.
ESP32C3 high-performance MCU.
Semtech LR1121 Transceiver.
Additional UART port.
Secondary port for advanced functionality.
Castled pads for easy soldering.

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Antenna Diversity

The XR3 receiver features a Skyworks RFX2401C providing an LNA for improved receiver performance, a PA providing up to 100mW of telemetry performance and antenna switching for antenna diversity.

radiomaster xr3 nano expresslrs receiver

Tailored to Your Needs

The XR3 Receiver is available in three configurations, ensuring you have the flexibility to meet your exact requirements: Choose between 2.4GHz, Sub-G 900MHz, or a Dual-Band antenna that allows switching between 2.4Ghz and 900Mhz without an antenna change! All antenna types are available as optional accessories so you can change frequency at a later stage without needing to purchase a new receiver.

radiomaster xr3 nano expresslrs receiver tailored

radiomaster xr3 nano expresslrs receiver lr1121

radiomaster xr3 nano expresslrs receiver uart

radiomaster xr3 nano expresslrs receiver para

radiomaster xr3 nano expresslrs receiver chart

Specification

Weight

Package

1 * XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

2 * T Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)

1 * CRSF Wire

3 * Heat-Shrinkable Tube

1 * Manual Card

radiomaster xr3 nano expresslrs receiver package

Recommendation

Reviews

A****m
Verified

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

Model：2 x Dual-Band
n*******y
Verified

Very good receiver. Can fly long distances. I recommend it to everyone!

Model：2 x Dual-Band

Purchased 2 times
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
Verified

I have several of these receivers. They are very good! Thank you MEPS!

Model：2 x Dual-Band

Purchased 2 times
Additional reviews after 31 days
Very good. You can take it very far.
L*****e
Verified

Tiny but powerful! The antenna diversity makes signal rock solid even in challenging environments. Perfect for my long-range builds.

Model：2 x Dual-Band
J******.
Verified

Dual-band switching and antenna diversity work flawlessly! Effortless Wi-Fi setup, fits micro builds. Perfect for long-range FPV.

Model：2 x Dual-Band
K****a
Verified

Fits perfectly in my 3-inch cinewhoop.

Model：2 x Dual-Band
******e
Verified

Lightning-fast EU shipping! Secure anti-static packaging. MEPSKING’s live chat solved a compatibility question instantly. 5 stars!

Model：2 x Dual-Band
O*****n
Verified

Bought the 900MHz version for outback flying - no signal issues even at 10km!

Model：2 x SubG 900MHz

FAQ Feel free to ask us any questions

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

About The XR3 Receiver: