How to assemble an ARF RC aircraft step by step
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
XR1 Nano Multi-Frequency ExpressLRS Receiver is an RC product from RadioMaster. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
XR1 Nano Multi-Frequency ExpressLRS Receiver fits customers looking for RadioMaster items in Receiver, ExpressLRS Receivers, Dual-Band ExpressLRS Receivers, with RC-MODEL support for choosing the right configuration.
XR1 Nano Multi-Frequency ExpressLRS Receiver is a RadioMaster product intended for RC aircraft, FPV, surface and telemetry receiver installations. This page presents the practical buying information in one place: compatibility, SKU, variants, radio protocol, use case and technical details.
The content is written for customer decision-making through RC-MODEL, without supplier prices or outbound purchase routes.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | RadioMaster |
| Brand | RadioMaster |
| Product Code | HP0157.XR1-DB |
| All Variant SKUs | HP0157.XR1-DB, HP0157.XR1-DB-LBT, HP0157.XR1-2400, HP0157.XR1-2400-LBT, HP0157.XR1-900, HP0157.XR1-900-LBT |
| Available Variants | Dual-Band / FCC; Dual-Band / LBT; 2.4GHz / FCC; 2.4GHz / LBT; Sub-G 900MHz / FCC; Sub-G 900MHz / LBT |
| Product Type | Receiver |
| RadioMaster Collections | Dual-Band ExpressLRS Receivers, ELRS Receivers |
| Product Family | RadioMaster receiver range |
| Application | RC aircraft, FPV, surface and telemetry receiver installations |
| Item | XR1 Nano Multi-Frequency ExpressLRS Receiver |
| Weight | 1.0g (without antenna) |
| Protocol / RF | ExpressLRS / ELRS, Gemini Xrossband, 2.4GHz, 915MHz / 868MHz |
| Type | ISM2.4 or CE868 |
| Antenna | 1x T-Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package) |
| MCU | ESP32C3 |
| Frequency Range | 2.4GHz or Sub-G 900MHz |
| FW Target | RadioMaster XR1 2.4/900 RX |
| Working voltage | 5V |
| Telemetry RF power | 100mW |
| Dimension | 20mm * 13mm * 3mm |
| Firmware Version | ExpressLRS v3.5.1 pre-installed |
| RF chip | Semtech LR1121 |
| Telemetry Power | 100mW |
| RF connector | IPEX-1 |
| Bus interface 1 | CRSF |
| Bus interface 2 | UART |
| Maximum Packet rate | DK500Hz / K1000Hz |
| Minimum Packet refresh rate | 50Hz |
Tags: RadioMaster, HP0157.XR1-DB, Dual-Band ExpressLRS Receivers, ExpressLRS Receivers, Receiver, RC radio
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