FrSky Archer Plus SR6L ACCESS / ACCST D16 Stabilized Receiver
The FrSky Archer Plus SR6L is a compact, full-range 6-channel receiver with built-in stabilization, telemetry, and flexible signal connections. Designed for fixed-wing aircraft, the SR6L combines reliable FrSky control with an integrated 3-axis gyroscope and 3-axis accelerometer, helping reduce the need for a separate stabilization system. Its lightweight 5.6g design makes it well suited for sport aircraft, park flyers, gliders, foam aircraft, electric models, and other builds where space and weight are limited.
The Archer Plus SR6L supports both ACCESS and ACCST D16 protocols, providing compatibility with a wide range of FrSky 2.4GHz transmitters and RF modules. The Archer Plus Series features enhanced anti-RF interference performance and smart protocol matching during binding, helping provide a stable and dependable radio connection.
The SR6L includes six standard 3-pin PWM channel outputs for direct servo and ESC connections. Additional functions are available through SBUS In, SBUS Out, S.Port, FBUS, and analog voltage-sensing connections. The included connector adapter cable allows these ports to be configured for different aircraft installations, telemetry devices, flight controllers, and compatible receiver redundancy setups.
Built-in stabilization functions include Auto-Level, Stabilization, Knife-Edge, and other supported flight modes. The SR6L also provides an additional group of five stabilized channels, allowing more aircraft functions to be mapped and stabilized across supported flight modes. An integrated high-precision telemetry sensor provides altitude and vertical-speed information without requiring a separate variometer sensor.
When used in ACCESS mode with a compatible FrSky ETHOS transmitter, the receiver supports Over-The-Air firmware updates, configurable telemetry power, and protocol switching between S.Port, F.Port, and FBUS. When configured for FBUS operation, compatible telemetry sensors, servos, and control devices can communicate through simplified wiring, and the receiver can provide up to 24 signal channels.
Compatibility Note
The Archer Plus SR6L is compatible with and can bind to all FrSky ECOS, TWIN, and Tandem Series radios that support ACCESS or ACCST D16 protocols. This includes compatible transmitters and RF modules operating in either supported protocol mode.
Some advanced functions, including OTA firmware updates, configurable telemetry settings, protocol switching, FBUS device configuration, and receiver stabilization setup, require a compatible ACCESS and ETHOS system.
The Archer Plus SR6L is not a TWIN TW receiver, Tandem TD receiver, ELRS receiver, Spektrum receiver, Futaba receiver, or FlySky receiver. Use this receiver only with compatible FrSky ACCESS or ACCST D16 radio systems.
Key Features
Compact full-range 6-channel stabilized FrSky receiver
Supports ACCESS and ACCST D16 protocols
Compatible with all FrSky ECOS, TWIN, and Tandem Series radios that support ACCESS or ACCST D16
Smart protocol matching during binding
Enhanced anti-RF interference performance
Built-in 3-axis gyroscope and 3-axis accelerometer
Auto-Level, Stabilization, Knife-Edge, and other supported flight modes
Additional stabilization group supporting five more stabilized channels
Built-in high-precision altitude and vertical-speed telemetry sensor
6 high-precision PWM channel outputs
SBUS Out with 16-channel or 24-channel support
SBUS In for compatible receiver redundancy setups
FBUS, F.Port, and S.Port telemetry support
Up to 24 signal channels in FBUS mode
External battery or device voltage monitoring
Over-The-Air firmware update support in ACCESS mode
Configurable telemetry power with compatible ACCESS systems
Included adapter cable for flexible port connections
Single 2.4GHz antenna with IPEX1 connector
Lightweight 5.6g design
Suitable for sport aircraft, gliders, park flyers, and compact fixed-wing models
Brand: FrSky
• Model: Archer Plus SR6L
• Receiver Series: Archer Plus Lite Series
• Receiver Type: Stabilized fixed-wing receiver
• RF Protocol: ACCESS / ACCST D16
• Frequency: 2.4GHz
• PWM Channels: 6
• Maximum Signal Channels: Up to 24 channels in supported FBUS configurations
• Stabilization Sensors: 3-axis gyroscope and 3-axis accelerometer
• Supported Flight Modes: Auto-Level, Stabilization, Knife-Edge, and other configurable modes
• Additional Stabilized Channels: 5
• Integrated Telemetry Sensor: Altitude and vertical speed
• Altimeter Measurement Range: -700m to 10,000m
• Altimeter Resolution: 0.1m
• Vertical Speed Measurement Range: ±10m/s
• Operating Voltage: 3.5–10V
• Operating Current: Less than 65mA at 5V
• Operating Range: Greater than 2km under ideal conditions
• Telemetry: FBUS / F.Port / S.Port
• Signal Outputs: PWM / SBUS Out / FBUS
• Redundancy Input: SBUS In
• SBUS Support: 16-channel / 24-channel modes
• External Voltage Detection: AIN2
• AIN2 Measurement Range: 0–35V
• Voltage Divider Ratio: 1:10
• Antenna: Single 2.4GHz antenna
• Antenna Connector: IPEX1
• Firmware Updates: OTA with compatible ACCESS systems or wired S.Port connection
• Dimensions: 45 × 18.5 × 9mm
• Weight: 5.6g
• Compatibility: FrSky 2.4GHz ACCESS or ACCST D16 capable transmitters and RF modules
Actual operating range may vary based on antenna installation, transmitter output, aircraft construction, local RF conditions, terrain, and environmental conditions.
Select the Correct RF Protocol
Create or open the aircraft model on your FrSky transmitter and select either ACCESS or ACCST D16 to match the receiver firmware and intended operating mode. ACCESS is recommended when supported because it enables additional receiver, telemetry, and stabilization configuration features.
Binding
Place the transmitter into registration or binding mode for the selected protocol, then power the receiver and follow the current FrSky binding procedure for your transmitter and firmware version.
Receiver Orientation
Install the receiver securely in the aircraft in the orientation required by the selected stabilization configuration. The receiver must remain firmly mounted and aligned with the aircraft. An incorrect orientation setting or loose installation can cause stabilization controls to move in the wrong direction.
Aircraft Type and Stabilization Configuration
Use the compatible FrSky stabilization setup tools to select the aircraft type, receiver orientation, channel assignments, and desired flight modes. Confirm that all stabilized control surfaces are assigned correctly before flight.
PWM Connections
Connect standard servos, the ESC throttle lead, retracts, lights, or other PWM-controlled accessories to the six 3-pin channel outputs. Verify signal, positive, and negative wire orientation before powering the receiver.
Stabilization Direction Check
After completing the stabilization setup, move the aircraft by hand and verify that each control surface moves against the unwanted motion. For example, when the aircraft rolls to the right, the stabilization system should command the ailerons to correct toward the left. Do not fly if any stabilization response is reversed.
Flight Modes
Assign the desired stabilization modes to transmitter switches. Available modes may include Stabilization, Auto-Level, Knife-Edge, and other supported modes depending on the receiver configuration and aircraft type. Confirm the active mode and control response before takeoff.
Gain Adjustment
Begin with conservative stabilization gain settings. Excessive gain may cause rapid control-surface oscillation during flight, while insufficient gain may provide little noticeable stabilization. Adjust gains gradually and test each change at a safe altitude.
SBUS Out
Use SBUS Out when connecting the receiver to a compatible flight controller, channel expander, decoder, or other SBUS device.
SBUS In and Receiver Redundancy
SBUS In may be used with a compatible secondary receiver or redundancy system. Confirm that the secondary receiver, signal format, power arrangement, and receiver settings are compatible before flight.
Telemetry and FBUS
The multifunction telemetry connection can be configured for S.Port, F.Port, or FBUS operation with a compatible FrSky system. FBUS allows compatible control and telemetry devices to share simplified wiring.
Altitude and Vertical-Speed Telemetry
The SR6L includes a built-in high-precision telemetry sensor for altitude and vertical-speed data. Keep the receiver protected from direct airflow, propeller wash, and sudden pressure changes that may affect telemetry readings.
External Voltage Monitoring
The AIN2 connection supports external battery or device voltage measurement from 0–35V when used with the correct 1:10 voltage divider. Do not connect a flight battery directly to AIN2 without the proper voltage divider or approved voltage-sensing cable.
Antenna Installation
Keep the antenna element straight and away from carbon fiber, batteries, ESCs, motors, ignition systems, high-current wiring, and other conductive materials. Do not sharply bend, pinch, cut, or modify the antenna.
Firmware Compatibility
Before binding, confirm that the transmitter RF firmware and receiver firmware support the same ACCESS or ACCST D16 version. Firmware mismatches can prevent binding or cause features to operate incorrectly.
Preflight Check
Confirm correct channel movement, servo direction, stabilization direction, flight-mode operation, failsafe behavior, telemetry operation, and control response before flying. Complete a range check after installation and whenever the receiver, antenna placement, transmitter configuration, stabilization settings, or aircraft electronics are changed.
