The Radiomaster XR collection ExpressLRS receivers carry an thrilling improve to FPV drones, providing a spread of choices to swimsuit each pilot’s wants—from micro drones to long-range setups—and embrace superior options like dual-band functionality, Gemini Xrossband, and ultra-low latency. Paired with Radiomaster’s GX12 transmitter or Nomad module, these receivers ship unmatched reliability and adaptability for FPV pilots in 2025. On this evaluate, I’ll break down the options, performance, and variations among the many XR1, XR2, XR3, and XR4 receivers, serving to you identify which one fits your setup greatest.
Be taught extra about ExpressLRS in my newbie’s information: https://oscarliang.com/setup-expresslrs-2-4ghz/
The place to Purchase
Get the XR1 collection receivers ($11.99 for the dual-band model or $9.99 for the single-band model):
Get the XR2 receiver ($9.99):
Get the XR3 receiver ($14.99):
Get the XR4 receiver ($19.99):
Twin-band antennas can be found individually for $3.49, permitting customers to customise their setups: https://oscarliang.com/product-k59o
The Twin-band antenna is ready to obtain and transmit each 2.4GHz and 900MHz indicators (by means of one single IPEX-1 connector).
New LR1121 Chipset
Radiomaster has constructed this new receiver lineup on the LR1121 chipset, identified for its dual-band functionality and superior ExpressLRS options. This chipset permits seamless switching between 2.4GHz and 868/915MHz bands with out the necessity for separate {hardware}. It’s a big leap from older chipsets, which had been restricted to a single frequency band. The XR4’s Gemini X mode takes this a step additional, transmitting and receiving on each bands concurrently.
Specs
XR1 Specs
- Frequency: 900 MHz and a couple of.4 GHz.
- Antenna Connector: IPEX-1
- Antenna Choices:
- Single-band (2.4GHz or 900MHz).
- Twin-band antenna (helps each 900MHz and a couple of.4GHz).
- Most Packet Fee:
- DK 500 Hz (900 MHz).
- Okay 1000 Hz (2.4 GHz).
- Minimal Packet fee: 50Hz
- Telemetry Energy: 100mW.
- Weight: Barely bigger than XR2.
- Dimensions: 20mm x 13mm x 3mm.
- Energy Enter: 5V DC.
- Firmware Model: ExpressLRS v3.5.1 pre-installed
- FW Goal: RadioMaster XR1 2.4/900 RX
- Bus interface 1: CRSF
- Bus interface 2: UART
- MCU: ESP32C3
- RF chip: Semtech LR1121
- Dimension: 20mm * 13mm * 3mm
- Weight: 1.0g (with out antenna)
XR2 Specs
- Frequency: 2.4GHz solely
- Antenna: Constructed-in ceramic tower antenna.
- Most Packet Fee: DK 500Hz.
- Minimal Packet fee: 50Hz
- Telemetry Energy: 10 mW.
- Weight: 0.8g.
- Dimensions: 16mm x 12mm x 6mm.
- Energy Enter: 5V DC.
- Firmware Model: ExpressLRS v3.5.1 pre-installed
- FW Goal: RadioMaster XR2 2.4 RX
- Bus interface 1: CRSF
- Bus interface 2: UART
- MCU: ESP32C3
- RF Chip: Semtech LR1121
- Dimension: 16mm * 12mm * 6mm
- Weight: 0.8g
XR3 Specs
- Frequency: Twin-band (900 MHz and a couple of.4 GHz).
- Antenna connectors: Two IPEX-1
- Antenna Choices: Two exterior antennas for range (single-band or dual-band choices accessible).
- Most Packet Fee:
- DK 500Hz (900 MHz).
- Okay 1000Hz (2.4 GHz).
- Minimal Packet fee: 25Hz
- Telemetry Energy: 100mW.
- Weight: Barely bigger than XR1.
- Dimensions: Just like XR1 however contains range elements.
- Voltage Enter: 5V to 12.6V DC.
- Firmware Model: ExpressLRS v3.5.1 pre-installed
- FW Goal: RadioMaster XR3 2.4/900 Range RX
- Bus interface 1: CRSF
- Bus interface 2: UART
- MCU: ESP32C3
- RF Chip: LR1121
- Dimension: 22mm * 15mm * 4mm
- Weight: 1.3g (with out antenna)
XR4 Specs
- Frequency: Twin-band with simultaneous operation (900 MHz and a couple of.4 GHz).
- Antenna: Two dual-band antennas (included)
- RF connector: Two IPEX-1
- Max Packet Fee:
- DK 500Hz (900 MHz).
- Okay 1000Hz (2.4 GHz).
- Minimal receiver fee: 50Hz
- Telemetry Energy: 100mW.
- Weight: Compact design in comparison with earlier Gemini receivers.
- Dimensions: Barely bigger than XR1 however smaller than earlier Gemini-capable fashions.
- Voltage Enter: 5V to 12.6V DC.
- UART: 1 essential UART, extra UART accessible.
- Gemini Xrossband Functionality: Sure – helps simultaneous transmission on 900 MHz and a couple of.4 GHz.
- Firmware Model: ExpressLRS v3.5.1 pre-installed
- FW Goal: RadioMaster XR4 2.4/900 Gemini RX
- Bus interface 1: CRSF
- Bus interface 2: UART
- MCU: ESP32D4
- RF Chip: Two LR1121
- Dimension: 22mm * 18mm * 4mm
- Weight: 1.7g (with out antenna)
Comparability
| Receiver | Notable Options | Telemetry Energy | Dimensions (mm) | Weight (g) | Value ($) |
| XR1 | Twin-band succesful. Single-band or dual-band antenna choices accessible. Helps a single antenna solely. | 100mW | 20x13x3 | 1.0 | 11.99 |
| XR2 | Constructed-in compact tower antenna, restricted to 2.4GHz solely. Compact and light-weight design. | 10mW | 16x12x6 | 0.8 | 9.99 |
| XR3 | Twin antenna setup for range. Obtainable in single-band or dual-band antenna choices. | 100mW | 22x15x4 | 1.3 | 14.99 |
| XR4 | True dual-band functionality with Gemini-X performance. Twin LR1121 chipsets for unbiased 2.4GHz and 900MHz operation. | 100mW | 22x18x4 | 1.7 | 19.99 |
Functions
XR1 – Versatile with Exterior Antenna
- Freestyle and Racing Quads: Works nicely for typical 5-inch FPV quads, providing good vary and reliability with non-obligatory dual-band functionality.
- Mid- and Lengthy-Vary FPV: Splendid for pilots who often swap between 2.4 GHz and 900 MHz frequencies for various environments. It’s additionally appropriate for mid to long-range flights, providing dependable efficiency.
XR2 – Compact and Light-weight
- Tiny Whoops and Micro Drones: Good for ultralight builds the place each gram issues.
- Indoor FPV Flying: Properly-suited for environments the place the smaller 2.4 GHz frequency gives enough vary and penetration.
- Newbie-Pleasant Builds: Compact measurement and hassle-free antenna mounting make it very best for newcomers who wish to keep away from the complexities of dual-band setups.
- Small Fastened-Wing Fashions: Wonderful for light-weight and compact fixed-wing drones the place measurement and weight are essential.
XR3 – Twin-Band Range
- Improved Sign Stability: Twin antennas scale back the probability of sign loss throughout flight, guaranteeing one antenna at all times maintains a line of sight reference to the transmitter when the antennas are mounted correctly.
- Functions:
- Bigger fixed-wing plane and FPV drones resembling 7-inch, 8-inch and 10-inch.
- Builds prioritizing reliability and vary.
XR4 – Flagship Gemini Xrossband Receiver
The Gemini Xrossband function, unique to the XR4, is a game-changer for FPV reliability. By utilizing each 900MHz and a couple of.4GHz concurrently, you get enhanced redundancy, decreasing the chance of sign loss. To completely make the most of this function, pair the XR4 with the Radiomaster GX12 transmitter or Nomad module.
- Final Lengthy-Vary Flying: Splendid for essential missions, offering most reliability and redundancy in RF-heavy environments or difficult terrains.
- Skilled Pilots: Designed for superior customers who require uncompromised efficiency in demanding eventualities.
Compatibility
All XR collection receivers (XR1, XR2, XR3, and XR4) are appropriate with older ExpressLRS {hardware}, however some newer modes is probably not accessible when utilizing the brand new receivers with older modules.
Conclusion
Radiomaster has efficiently expanded its product lineup with the XR collection of receivers. Whether or not you’re an off-the-cuff pilot or knowledgeable, there’s an XR receiver tailor-made to your wants. The strong options, cutting-edge expertise, and inexpensive pricing make the XR collection a standout possibility within the ExpressLRS market. Whether or not you prioritize compact design, range, or full dual-band Gemini-X performance, the XR collection gives a formidable answer for each pilot.