RadioLink R8SM 8-channel receiver
The RadioLink R8SM is a very small and light 2.4 GHz receiver for racing drones and multicopter builds. Weighing just 2 g and measuring 18 x 13 mm, it fits even in very compact models where low weight and minimal space requirements matter.
With FHSS spread spectrum technology, 67-channel pseudorandom frequency hopping and up to 2000 metres of range in the air under optimal conditions, the R8SM is a neat choice for small drone builds with an SBUS or PPM signal.
- 8-channel receiver for racing drones and multicopters
- Up to 2000 metres of range in the air under optimal conditions
- FHSS spread spectrum with 67-channel pseudorandom frequency hopping
- Support for SBUS or PPM signal output
- Very compact format – only 18 x 13 mm
- Extremely low weight – only 2 g
- Compatible with several types of flight controllers
- Compatible with several RadioLink transmitters
Stable control with up to 2000 metres of range
The R8SM uses FHSS spread spectrum technology and 67-channel pseudorandom frequency hopping to reduce signal interference and provide stable control. The technology contributes to good interference resistance and reliable signal transmission in the air.
The range is specified at up to 2000 metres in the air. The maximum range is tested in open areas without interference and can vary depending on the model, installation, antenna placement, surroundings and local regulations.
Small enough for mini racing drones
Weighing just 2 g and measuring 18 x 13 mm, the R8SM is easy to fit even in very small drone builds. The low weight makes it especially suitable for mini racing drones, multicopters and other models where every gram counts.
SBUS or PPM signal output
The RadioLink R8SM has 8 channels via SBUS or PPM signal output. This makes it suitable for use together with compatible flight controllers such as PIXHAWK, Mini Pix, TURBO PiX, APM, F4, F7 and similar systems.
The receiver is designed for installations where the control signal runs via a flight controller, for example in racing drones and multicopter builds.
Low jitter and high resolution
The R8SM has 4096-step channel resolution with 0.25 µs per section. The maximum PWM jitter is given as 1.84 µs, with a standard value of 0.5 µs.
Compatible RadioLink transmitters
The RadioLink R8SM is compatible with several RadioLink transmitters. It must be used together with a compatible flight controller.
- T8FB(BT)
- T8S(BT)
- T8FB(OTG)
- T8S(OTG)
- RC8X
- RC6GS V3
- RC6GS V2
- RC6GS
- RC4GS V3
- RC4GS V2
- RC4GS
Suitable for many model types
- Racing drones
- Mini racing drones
- Multicopters
- Compact FPV builds
Technical specifications
- Model: RadioLink R8SM
- Product type: 8-channel receiver
- Size: 18 x 13 mm
- Antenna length: 90 mm
- Weight: 2 g
- Channels: 8
- Operating voltage: 3.6 V
- Operating current: 38–45 mA at 5 V
- Signal output: SBUS / PPM
- Frequency band: 2.4 GHz ISM band, 2400–2483.5 MHz
- Spread spectrum mode: FHSS, 67-channel pseudorandom frequency hopping
- Channel resolution: 4096 with 0.25 µs per section
- PWM jitter: Max 1.84 µs, standard 0.5 µs
- Applicable model types: Racing drones and multicopters
- Control range: Up to 2 km in the air under open, interference-free conditions
- Operating temperature: -30 °C to 85 °C
- Compatible transmitters: T8FB(BT), T8S(BT), T8FB(OTG), T8S(OTG), RC8X, RC6GS V3, RC6GS V2, RC6GS, RC4GS V3, RC4GS V2 and RC4GS
Good to know
The maximum range is tested in open areas without interference. The actual range can vary depending on the model, installation, antenna placement, surroundings and local regulations.
The R8SM is intended to be used together with a compatible flight controller. Always check that the signal type, transmitter and flight controller are compatible before installation.
Summary
The RadioLink R8SM is an ultralight and compact 8-channel receiver with SBUS/PPM signal output, FHSS frequency hopping and up to 2000 metres of range under optimal conditions. It is especially well suited to racing drones, mini racing drones and multicopter builds where low weight and a compact format are decisive.
