The FrSky Archer Plus GR8 Variometer Receiver is an advanced 2.4GHz receiver designed for RC glider pilots and model aircraft enthusiasts who value accurate altitude information, responsive variometer feedback and reliable radio communication. Part of FrSky's enhanced Archer Plus series, the GR8 combines an upgraded high-precision variometer with flexible receiver connectivity and support for both ACCESS and ACCST D16 protocols.

Featuring eight high-precision PWM channel ports, dual detachable antennas and full-range telemetry, the Archer Plus GR8 provides a versatile solution for a wide range of compatible RC aircraft. Its upgraded variometer delivers more accurate and responsive altitude and vertical speed measurements, while compatible FrSky ACCESS transmitters can provide improved audible vario feedback to help pilots monitor climbs and descents during flight.

Enhanced RF interference resistance, SBUS input for receiver redundancy, SBUS output supporting 16-channel and 24-channel modes, and FBUS connectivity further increase the receiver's flexibility. External voltage monitoring and black-box flight data recording add useful functionality for pilots who want greater insight into their aircraft's performance.

Whether you're setting up a thermal-soaring glider or upgrading an existing RC aircraft, the FrSky Archer Plus GR8 delivers a compact combination of telemetry, versatile connectivity and dependable control.

Key Features

• Upgraded high-precision variometer – provides more accurate and responsive altitude and vertical speed measurements for improved flight awareness.
  
• ACCESS and ACCST D16 compatibility – supports both FrSky 2.4GHz protocols, with automatic protocol matching during binding on compatible transmitters.
  
• 8 high-precision PWM channel ports – provides direct control connections for compatible servos and aircraft equipment.
  
• 16-channel and 24-channel SBUS modes – supports expanded channel configurations through SBUS output.
  
• Dual detachable antennas – allows flexible antenna positioning to help optimise reception.
  
• Full-range control with telemetry – manufacturer-specified range exceeds 2km under suitable conditions; actual range varies with installation and local conditions.
  
• Enhanced RF interference resistance – improved resistance to radio-frequency interference for robust radio performance.
  
• Spark-ignition interference protection – includes anti-interference capability for installations using spark-ignition engines.
  
• SBUS input for redundancy – can serve as a primary receiver in a compatible redundant receiver setup.
  
• FBUS and S.Port connectivity – supports compatible telemetry devices and accessories.
  
• Black-box data recording – supports recording basic power- and signal-related flight data, subject to firmware support.
  
• External voltage monitoring – measures external battery or device voltage through the AIN2 input.
  
• Over-the-air firmware updates – supports OTA updating where compatible.
  
• Compact, lightweight design – weighs just 9.8g, making it suitable for weight-conscious aircraft installations.

Perfect For

• RC glider pilots who rely on accurate altitude and climb-rate information.
  
• Thermal-soaring enthusiasts who want responsive variometer feedback.
  
• RC aircraft pilots using compatible FrSky ACCESS or ACCST D16 transmitters.
  
• Model aircraft builders requiring eight high-precision PWM outputs.
  
• Pilots who want 16-channel or 24-channel SBUS capability.
  
• RC enthusiasts building redundant receiver systems using SBUS.
  
• Aircraft installations requiring telemetry, external voltage monitoring and flexible connectivity.
  
• Experienced FrSky users who want to integrate compatible FBUS telemetry devices.

Product Summary

The FrSky Archer Plus GR8 is a lightweight, telemetry-equipped receiver designed to deliver precise variometer data and versatile connectivity for compatible RC aircraft. Its upgraded sensor measures altitude from -700m to 10,000m with 0.1m resolution and measures vertical speed across a range of ±10m/s.

With support for ACCESS and ACCST D16, eight high-precision PWM outputs, 16-channel and 24-channel SBUS modes, and dual detachable antennas, the GR8 is particularly well suited to glider pilots who want better awareness of their aircraft's vertical movement.

Enhanced interference resistance, receiver redundancy support and external voltage monitoring make it a flexible choice for both new aircraft builds and receiver upgrades.

Specifications

• Brand: FrSky
  
• Product series: Archer Plus
  
• Model: GR8
  
• Product type: RC receiver with variometer
  
• Operating frequency: 2.4GHz
  
• Supported protocols: ACCESS / ACCST D16
  
• PWM channel ports: 8 high-precision outputs
  
• SBUS channel modes: 16CH / 24CH
  
• Total channel capability: 8 PWM channels with expanded SBUS channel modes
  
• Variometer: Upgraded high-precision sensor
  
• Altimeter measurement range: -700m to 10,000m
  
• Altimeter resolution: 0.1m
  
• Vertical speed measurement range: ±10m/s
  
• Antennas: 2 detachable antennas
  
• Antenna connector: IPEX4
  
• SBUS output: Supports 16CH / 24CH modes
  
• SBUS input: Supports signal redundancy
  
• Telemetry: S.Port / FBUS
  
• External voltage monitoring: AIN2, 0–35V
  
• Battery voltage divider ratio: 1:10
  
• Operating voltage: 3.5–10V
  
• Operating current: Less than 65mA at 5V
  
• Control range: Over 2km under suitable conditions
  
• Firmware updates: OTA, where supported
  
• Dimensions (L × W × H): 54 × 20 × 10mm
  
• Weight: 9.8g
  
• Compatibility: FrSky 2.4GHz ACCESS / ACCST D16-capable transmitters
  
• Package contents: 1 × FrSky Archer Plus GR8 receiver

Compatibility note: Some features require compatible ACCESS and ETHOS support. Check transmitter protocol, firmware and configuration compatibility before installation. Actual radio range depends on local conditions and aircraft setup.

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