RadioMaster

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RadioMaster - XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver (2 x 2.4GHz)

The XR3 Receiver is a versatile, ultra-compact ExpressLRS receiver measuring just 20 × 15 mm. Powered by the third-generation Semtech LR1121 transceiver, the XR3 operates on either the 2.4 GHz or Sub-G 900 MHz bands. Whether using 2.4 GHz or 900 MHz, the XR3 delivers strong range and sensitivity in a small, lightweight package—well suited for a wide range of builds. With the reliability of ExpressLRS, you can focus on operation 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.

Features

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

Specifications

Item: XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
Type: ISM2.4 or CE868
MCU: ESP32C3
RF Chip: LR1121
RF connector: IPEX-1 X 2
Antenna: 2x T-Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)
Frequency Range: 2.4GHz / Sub-G 900MHz
Telemetry Power: 100mw
Maximum receive refresh rate: DK500Hz / K1000Hz
Minimum receiver refresh rate: 25Hz
Working voltage: DC 4.5 - 8.4V
Weight: 1.3g (without antenna)
Dimension: 22mm * 15mm * 4mm
Firmware Version: ExpressLRS v3.5.1 pre-installed
FW Target: RadioMaster XR3 2.4/900 Diversity RX
Bus interface 1: CRSF
Bus interface 2: UAR

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.

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!

Weight

Dimensions

Download

XR3 Receiver User Manual

Package Includes

1 * XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver
2 * 2.4GHz T Antenna
1 * CRSF Wire
3 * Heat-Shrinkable Tube
1 * Manual Card

XR3 Receiver is installed with ExpressLRS as standard.

ExpressLRS is an open-source, high-performance radio control link that delivers exceptional range and low-latency communication using advanced LoRa technology. It's highly customizable and perfect for RC enthusiasts looking for reliability and efficiency.

Pair your ExpressLRS with Radiomaster's top-tier transmitters and receivers. Radiomaster products are designed to maximize the benefits of ExpressLRS, offering state-of-the-art performance for your RC adventures. Upgrade your RC experience with the unbeatable combination of ExpressLRS and Radiomaster—engineered for excellence and tailored for you.

Find out more about ExpressLRS here

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Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.