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.
R81 V2 Receiver
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Why choose R81 V2 Receiver through RC-MODEL?
R81 V2 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.
Fit and use
R81 V2 Receiver fits customers looking for RadioMaster items in Receiver, with RC-MODEL support for choosing the right configuration.
- Relevant category: Receiver
- Product identification for inquiry: model HP0157.RX-R81-V2 / SKU HP0157.RX-R81-V2
Key details
- Weight: 2 grams
- Channels: 8
- Size: 17x11mm
- Frequency range: 2400-2483.5Mhz
- Antenna length: Approximately 6cm
- Manufacturer: RadioMaster
Before ordering
- Confirm dimensions, power system, radio compatibility or material size before purchase.
- Ask us to match required accessories, adhesives, hardware, batteries or replacement parts.
- RC-MODEL helps with fit checks, availability, compatible accessories and a formal quote in Israel.
R81 V2 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.
Key Advantages
- Organized for RC aircraft, FPV, surface and telemetry receiver installations.
- Part of the RadioMaster receiver range.
- RF/protocol context: SBUS.
- Multiple variants are documented for easier matching to the required setup.
- Includes local product imagery and structured specifications for customer comparison.
Core Specifications
- Product Code: HP0157.RX-R81-V2
- Product Family: RadioMaster receiver range
- Protocol / RF: SBUS
- Channels: 8
- Available Variants: FCC; LBT
- Weight: 2 grams
- Type: R81 - D8 Nano Sbus Receiver
- Frequency range: 2400-2483.5Mhz
- Power input range: 4.5-6V
- Signal format: D8, D16 & SFHSS Compatible
- Output format: SBUS
- RSSI: RSSI on Ch9 of Sbus Output
- Range: more than 1km
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
How to balance an RC aircraft and find the correct CG
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.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
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.RX-R81-V2 |
| All Variant SKUs | HP0157.RX-R81-V2, HP0157.RX-R81-V2-LBT |
| Available Variants | FCC; LBT |
| Product Type | Receiver |
| Product Family | RadioMaster receiver range |
| Application | RC aircraft, FPV, surface and telemetry receiver installations |
| Weight | 2 grams |
| Protocol / RF | SBUS |
| Channels | 8 |
| Range | more than 1km |
| Size | 17x11mm |
| Type | R81 - D8 Nano Sbus Receiver |
| Frequency range | 2400-2483.5Mhz |
| Power input range | 4.5-6V |
| Signal format | D8, D16 & SFHSS Compatible |
| Output format | SBUS |
| Antenna length | Approximately 6cm |
| RSSI | RSSI on Ch9 of Sbus Output |
| PS | Please refer to the latest version updated on the official website for usage instructions. |
Tags: RadioMaster, HP0157.RX-R81-V2, Receiver, RC radio