Holybro SiK Telemetry Radio V3 100mW 433MHz

The Holybro SiK Telemetry Radio V3 (433 MHz / 100 mW) is a compact data link with open firmware, designed for ArduPilot and PX4 based flight controllers. It establishes a reliable MAVLink connection between your drone and a ground control station (GCS) like Mission Planner or QGroundControl, enabling real-time mission planning, flight monitoring and parameter tuning in the field.

Key features

• Interchangeable modules: the V3 design eliminates separate "air" and "ground" variants; both included modules feature identical hardware with a Micro-USB port (Type-C adapter cable included) and a 6-pin JST-GH port.
• Plug-and-play compatibility: connects directly to Pixhawk Standard flight controllers via the included JST-GH cables with no soldering required.
• Open-licensed SiK firmware: pre-loaded with standard SiK firmware, supporting MAVLink framing, duty cycle configuration and AT command configuration.
• Built-in FT230X USB-to-UART bridge for a direct USB connection to the ground station computer.

Specifications

• Frequency: 433 MHz
• Output power: 100 mW (20 dBm) maximum
• Receive sensitivity: -121 dBm at 2 kbps, -105 dBm at 64 kbps
• Range: typically more than 300 m with the stock antennas; several km with a patch antenna on the ground
• Link: FHSS with error correction of up to 25% of bit errors
• Hardware interface: UART (6-pin JST-GH), Micro-USB (USB-C adapter cable included)
• Supported firmware: ArduPilot, PX4 (MAVLink compatible)
• Supply voltage: 5V DC (via USB or JST-GH)

Note: the 433 MHz band is heavily regulated in some jurisdictions. Always verify that local radio transmission laws permit 433 MHz operation at 100 mW before deployment.