Futaba R70SR – Dedicated Sub-Receiver for Dual RX-Link Systems
The Futaba R70SR is a compact and lightweight dedicated sub-receiver designed specifically for Futaba Dual RX-Link systems.
Measuring just 15 mm in width and weighing only 3.9 g, the R70SR is ideal for installations where space and weight are critical. Its slim profile makes it particularly easy to install in narrow areas of the airframe, while the integrated diversity antenna system helps provide more stable and reliable reception of radio signals.
The R70SR operates using the FASSTest 2.4 GHz system and supports 26-channel, 18-channel and 12-channel modes. It is designed to work as a secondary receiver in compatible Futaba Dual RX-Link installations and cannot be used as a standalone receiver to control servos.
Key Features
- Dedicated sub-receiver for Futaba Dual RX-Link systems
- FASSTest 2.4 GHz communication
- Supports 26CH / 18CH / 12CH modes
- Extremely compact and lightweight design
- Only 15 mm wide, making it ideal for confined installations
- Integrated diversity antenna system for improved reception stability
- Receiver-only device – designed exclusively for use as a sub-receiver
- Standard connector for easy integration
- No telemetry functionality
- Suitable for a wide range of advanced Futaba redundant receiver installations
Compatible Futaba Systems
The R70SR must be used in combination with compatible Futaba equipment, including:
- R72xxSB series receivers
- R73xxxSB series receivers
- DLPH-2 / DLPH-3
- CGY770R
The main receiver and connection cable required for DLPH-series installations are sold separately.
Required Software Versions
The compatible equipment must have the appropriate software version installed for R70SR operation:
Equipment | Required Version
|
| R7314SB | Ver. 1.3 or later |
| R7208SB / R7308SB | Ver. 2.3 or later |
| R7206SB / R7306SB | Ver. 1.3 or later |
| R7201SB / R7301SB | Ver. 1.4 or later |
| DLPH-2 | Ver. 1.2 or later |
| DLPH-3 | Compatible as standard |
| CGY770R | Ver. 1.4 or later |
| FDLS-1 | Not compatible |
| DLPH-1 | Not compatible |
Important: Previous software versions may not recognize the R70SR. Please ensure that the compatible main receiver or system component is updated to the required firmware version before installation.
Important Notes
- The R70SR cannot operate servos on its own and must always be used as a dedicated sub-receiver within a compatible Dual RX-Link system.
- The R70SR is for receiving only and does not provide telemetry functionality.
- The main receiver and connection cable required for DLPH-series systems are sold separately.
Specifications
|
| System | FASSTest 2.4 GHz |
| Channel Modes | 26CH / 18CH / 12CH |
| System Type | Dual RX-Link |
| Function | Dedicated sub-receiver |
| Antenna | Diversity system |
| Dimensions | 15 × 43 × 5 mm |
| Weight | 3.9 g |
| Operating Voltage | 3.5–8.4 V |
| Connector | Standard connector |
| Telemetry | Not available |
At Aerobertics
At Aerobertics, we like the R70SR for its combination of minimal size, low weight and reliable diversity reception. It is an excellent solution when building a sophisticated Dual RX-Link installation and every gram and millimetre counts.
Its 15 mm slim profile makes it particularly convenient for large-scale models, tightly packed fuselages and installations where conventional receivers simply take up too much space.
For pilots looking to build a redundant Futaba receiver system with a clean and space-efficient installation, the R70SR is a smart addition to a compatible Dual RX-Link setup.
