FrSky TWIN TW GR8 Receiver
The FrSky TW GR8 combines FrSky’s advanced TWIN protocol with an integrated high-precision variometer in a versatile 8-channel receiver. Designed for gliders and other aircraft requiring dependable long-range control and accurate flight telemetry, the TW GR8 provides eight standard PWM outputs, flexible signal connections, and dual active 2.4GHz performance.
Unlike traditional backup receiver systems, the TWIN active-active protocol operates both 2.4GHz frequency bands simultaneously. Both links remain active throughout the flight instead of waiting for one signal path to fail before switching to another, helping provide improved signal stability, resilience, and long-range performance.
The TW GR8 provides 8 PWM output channels, SBUS Out, SBUS In for signal redundancy, and FBUS/S.Port telemetry support. When configured for FBUS in ETHOS, control signals and telemetry can be carried through a single wire with compatible FBUS devices, reducing wiring and simplifying aircraft installation.
An integrated high-precision variometer supplies accurate altitude and vertical-speed telemetry without requiring a separate external sensor. This makes the TW GR8 particularly well suited to gliders, sailplanes, and other aircraft where altitude and climb-rate information are important.
Compatibility Note
The TW GR8 is compatible with FrSky TWIN Series radios and RF modules operating in TW mode. This includes the FrSky TWIN X14, TWIN X14S, and other TWIN Series transmitters that support the TW protocol. It is not a Tandem TD receiver and should be used with TWIN/TW-compatible systems.
Key Features
Dual active 2.4GHz TW protocol for stable signal performance
Active-active dual-frequency operation, not simple standby redundancy
Integrated high-precision variometer
Accurate altitude and vertical-speed telemetry
Dual 2.4GHz antenna system for reliable signal coverage
Versatile 8-channel receiver design
8 PWM output channel ports
SBUS Out with 16CH / 24CH support
SBUS In for signal redundancy
FBUS / S.Port telemetry support
Single-wire FBUS support for compatible telemetry and control devices
Built-in Black Box function
Long control range depending on RF power settings
Over-The-Air OTA firmware update support
Compatible with FrSky TWIN Series radios and RF modules in TW mode
Specifications
Frequency: Dual 2.4GHz
Dimensions: 54 × 20 × 10 mm
Weight: 9.8g
Operating Voltage: 3.5–12V
Minimum Voltage During Operation: Above 2.8V
Operating Current: 80mA @ 5V
PWM Channels: 8
SBUS Out: 16CH / 24CH support
SBUS In: Supported for signal redundancy
Telemetry: FBUS / S.Port
Altimeter Measurement Range: −700m to 10,000m
Altimeter Resolution: 0.1m
Vertical Speed Measurement Range: ±10m/s
AIN2 Voltage Measurement Range: 0–36V with external connection
Antenna Connector: IPEX4
Compatibility: FrSky TWIN Series radios and RF modules in TW mode
Product Manual
