Futaba Corporation Launches Slim Sub-Receiver "R70SR" for RC Airplanes
Futaba Corporation has launched the "R70SR," a slim sub-receiver for RC airplanes. Despite its slim 15mm width and lightweight 3.9g design, it features a diversity antenna system, providing stable and redundant reception even in aircraft with limited installation space.
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- 📰 Published: June 10, 2026 at 01:50
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Futaba Corporation (Headquarters: Mobara City, Chiba Prefecture), a long-time provider of high-performance transmitters and aircraft in the radio control field, released the slim sub-receiver "R70SR" for RC airplanes at the end of May 2026. The R70SR achieves a slim 15mm width and a lightweight design of 3.9g while incorporating a diversity antenna system (※1). This sub-receiver offers users stable and redundant reception even in aircraft with limited installation space.
(※1) Diversity System: A system that receives the same radio waves using "multiple antennas."
■Product Overview R70SR | Futaba Corporation Radio Control
In recent years, RC airplanes and helicopters have become larger and more powerful, leading to increased aircraft structure density and increasingly strict limitations on the freedom of electronic component installation. Consequently, demands for reliability to protect expensive aircraft and payloads, as well as for competitions and events, have also risen. The R70SR was developed to meet these user demands. It is a sub-receiver that allows for the addition of reception redundancy without difficulty, even in limited spaces.
FASSTest(※2) 2.4GHz System (26ch/18ch/12ch modes)
Dedicated sub-receiver for the Dual RX Link System(※3)
Dedicated sub-receiver, for reception only
Antenna: Diversity system
Dimensions: 15.0 x 43.0 x 5.0mm Weight: 3.9g
Usable Voltage Range: 3.5-8.4V
Connector Shape: Standard connector
Price: ¥8,800 <041693>
(※2) Air Radio Control System
For details, refer to the link: Futaba RC Technology - Air Radio Control System
(※3) Reception system compatible with sub-receivers
For details, refer to the link: Futaba RC Technology - Dual Rx Link System
■Features of R70SR
1. Improved Installation Flexibility with Slim Shape
- Width 15.0mm x Length 43.0mm x Thickness 5.0mm
- Elongated body that easily fits into narrow fuselages or frame gaps
This makes it easier to install in aircraft where installing a sub-receiver was previously difficult.
2. Stable Reception with Diversity Antenna System
Adopts a diversity system using two antenna lines. This reduces variations in reception conditions due to aircraft attitude or environmental changes, and by combining it with the main receiver, a more stable link is achieved.
3. Dedicated Design for Dual RX Link System
The R70SR is designed exclusively as a sub-receiver.
- Compatible with FASSTest 2.4GHz system (26ch / 18ch / 12ch modes)
- Used in combination with main receivers, DLPH series, or CGY770R
- As it is designed for reception only, it does not include servo direct drive or telemetry functions
By focusing on essential functions, it achieves a balance of small size, light weight, and high reliability.
Futaba Corporation will continue to strive for improvements in quality and performance for the RC aircraft market.
■Company Overview
Company Name: Futaba Corporation
Location: Mobara City, Chiba Prefecture
Established: 1948
Business Activities: Design, development, manufacturing, and sales of various electronic components, radio equipment, and production equipment (including composite modules, industrial and hobby radio control equipment, robotics products, organic EL displays, plate products, die equipment, and molding/production rationalization equipment).
URL: https://www.futaba.co.jp/
■Contact Information
【Product Inquiries】
Futaba Corporation Robotics Solution Business Center
Customer Service Phone Number: 0475-32-4395
Various inquiries about products and the company | Futaba Corporation
【Inquiries Regarding This Matter】
629 Oshiba, Mobara City, Chiba Prefecture 297-8588
Futaba Corporation
Public Relations Department, Business Strategy Division Manager: Yusuke Nakano
TEL: 0475-24-1111 (Main)
Inquiries: Support TOP | Futaba Corporation Radio Control
(※1) Diversity System: A system that receives the same radio waves using "multiple antennas."
■Product Overview R70SR | Futaba Corporation Radio Control
In recent years, RC airplanes and helicopters have become larger and more powerful, leading to increased aircraft structure density and increasingly strict limitations on the freedom of electronic component installation. Consequently, demands for reliability to protect expensive aircraft and payloads, as well as for competitions and events, have also risen. The R70SR was developed to meet these user demands. It is a sub-receiver that allows for the addition of reception redundancy without difficulty, even in limited spaces.
FASSTest(※2) 2.4GHz System (26ch/18ch/12ch modes)
Dedicated sub-receiver for the Dual RX Link System(※3)
Dedicated sub-receiver, for reception only
Antenna: Diversity system
Dimensions: 15.0 x 43.0 x 5.0mm Weight: 3.9g
Usable Voltage Range: 3.5-8.4V
Connector Shape: Standard connector
Price: ¥8,800 <041693>
(※2) Air Radio Control System
For details, refer to the link: Futaba RC Technology - Air Radio Control System
(※3) Reception system compatible with sub-receivers
For details, refer to the link: Futaba RC Technology - Dual Rx Link System
■Features of R70SR
1. Improved Installation Flexibility with Slim Shape
- Width 15.0mm x Length 43.0mm x Thickness 5.0mm
- Elongated body that easily fits into narrow fuselages or frame gaps
This makes it easier to install in aircraft where installing a sub-receiver was previously difficult.
2. Stable Reception with Diversity Antenna System
Adopts a diversity system using two antenna lines. This reduces variations in reception conditions due to aircraft attitude or environmental changes, and by combining it with the main receiver, a more stable link is achieved.
3. Dedicated Design for Dual RX Link System
The R70SR is designed exclusively as a sub-receiver.
- Compatible with FASSTest 2.4GHz system (26ch / 18ch / 12ch modes)
- Used in combination with main receivers, DLPH series, or CGY770R
- As it is designed for reception only, it does not include servo direct drive or telemetry functions
By focusing on essential functions, it achieves a balance of small size, light weight, and high reliability.
Futaba Corporation will continue to strive for improvements in quality and performance for the RC aircraft market.
■Company Overview
Company Name: Futaba Corporation
Location: Mobara City, Chiba Prefecture
Established: 1948
Business Activities: Design, development, manufacturing, and sales of various electronic components, radio equipment, and production equipment (including composite modules, industrial and hobby radio control equipment, robotics products, organic EL displays, plate products, die equipment, and molding/production rationalization equipment).
URL: https://www.futaba.co.jp/
■Contact Information
【Product Inquiries】
Futaba Corporation Robotics Solution Business Center
Customer Service Phone Number: 0475-32-4395
Various inquiries about products and the company | Futaba Corporation
【Inquiries Regarding This Matter】
629 Oshiba, Mobara City, Chiba Prefecture 297-8588
Futaba Corporation
Public Relations Department, Business Strategy Division Manager: Yusuke Nakano
TEL: 0475-24-1111 (Main)
Inquiries: Support TOP | Futaba Corporation Radio Control
FAQ
What are the benefits of the R70SR?
Its slim and lightweight design (15mm width, 3.9g) allows easy installation in RC airplanes with limited space. The diversity antenna ensures stable reception, enhancing flight reliability.
What systems is it compatible with?
It supports the FASSTest 2.4GHz system and is designed as a dedicated sub-receiver for the Dual RX Link System, used in conjunction with main receivers, DLPH series, CGY770R, etc.
Does the R70SR support telemetry functions?
No, the R70SR is designed exclusively for reception and does not include servo direct drive or telemetry functions. It prioritizes small size, light weight, and high reliability.
Where can I purchase it?
The product is scheduled for release at the end of May 2026. For purchasing information, please inquire at the official Futaba Corporation website or your local RC hobby shop.
What kind of company is Futaba Corporation?
Futaba Corporation, established in 1948 and headquartered in Mobara City, Chiba Prefecture, is a manufacturer of electronic components and radio equipment, providing high-performance RC transmitters and aircraft for many years.