Holybro SiK Telemetry Radio V3 100mW 915MHz 2 pcs
by RFDesign

The Holybro SiK Telemetry Radio V3 100mW 915MHz (2 Pcs Pack) is a highly reliable, compact, and open-source wireless data link platform engineered to establish real-time telemetry communication between an autonomous vehicle and a ground control station. Operating on the 915MHz frequency band, this kit features two fully interchangeable radio modules that can serve as either the air or ground station transceiver. This flexibility completely simplifies system setup. The platform comes pre-flashed with open-source SiK firmware, specifically optimized to frame MAVLink protocol packets seamlessly and integrate out-of-the-box with leading ground control software like Mission Planner, Ardupilot, QGroundControl, and PX4 Autopilot.

Designed for plug-and-play operation with Pixhawk standard flight controllers and modern enterprise autopilots, each module utilizes a 2-way full-duplex communication stream managed by an adaptive Time Division Multiplexing (TDM) UART interface. Delivering an adjustable maximum output power of 100mW (20 dBm) and an exceptional -117 dBm receive sensitivity, this radio system reliably achieves a line-of-sight range of 300 meters or more out-of-the-box, which can be extended to several kilometers using high-gain directional ground antennas. Built-in FT230X/FT231 USB-to-UART conversion ICs permit direct desktop connection via the integrated Micro-USB port, while a 6-position JST-GH port manages the hardware serial connection. To protect the link in electronically crowded environments, the V3 employs Frequency Hopping Spread Spectrum (FHSS) technology and an advanced error correction algorithm capable of reconstructing up to 25% of corrupted bit errors on the fly.

Technical Specifications

• Product Name: Holybro SiK Telemetry Radio V3 100mW 915MHz

• Firmware Baseline: Open-source SiK Firmware (Configurable via Mission Planner or AT commands)

• Operating Frequency Band: 915 MHz (902MHz - 928MHz)

• Maximum RF Output Power: 100 mW (20 dBm, software adjustable)

• Receiver Sensitivity: -117 dBm

• Antenna Connection Core: RP-SMA Female

• Antenna Gain Specification: 2 dBi Omnidirectional

• Communication Interface Layout: 2-way full-duplex adaptive TDM UART

• Data Framing & Protocol: Transparent Serial Link / MAVLink Protocol Framing

• Interference Mitigation: Frequency Hopping Spread Spectrum (FHSS) with configurable duty cycle

• Error Correction Capability: Advanced ECC corrects up to 25% of bit errors

• Onboard USB Bridge IC: FT230X / FT231 USB to Basic UART conversion chip

• Hardware Interface Ports: 1 x Micro-USB Port, 1 x 6-position JST-GH Connector (3.3V-TTL)

• Supply Voltage Input: 5V DC (sourced via USB or JST-GH connection)

• Transmit Operating Current: 100 mA at maximum 20 dBm output

• Receive Operating Current: 25 mA

• Diagnostic Monitoring Array: Onboard Status LEDs (Green Link Status, Red Data Transmission)

• Physical Module Dimensions: 28 mm x 53 mm x 10.7 mm (excluding antenna)

• Net Hardware Weight: 22.7 grams per module (including standard antenna)

What's Included

• 2 x Holybro SiK Telemetry Radio V3 100mW 915MHz Modules with Antennas

• 1 x JST-GH-6P to JST-GH-6P Connection Cable (for Pixhawk Standard Flight Controllers)

• 1 x JST-GH-6P to Molex DF13-6P Connection Cable (for legacy Pix32, Pixhawk 2.4.6, etc.)

• 1 x Micro-USB to USB-A Ground Station Interface Cable

• 1 x Micro-USB to Micro-USB OTG Android Mobile Device Adapter Cable

• 1 x Micro-USB to USB Type-C Adapter