Holybro SiK Telemetry Radio V3 100mW 433MHz / 915MHz Open Source SiK Firmware Plug-n-Play for Pixhawk Standard Flight Controllers Overview: This Holybro SiK Telemetry Radio is a small, lightweight, and cost-effective open-source radio platform that typically provides ranges greater than 300 meters out of the box. The range can be extended to several kilometers by using a patch antenna on the ground. The radio offers plug-and-play compatibility with all Pixhawk Standard and other flight controllers, providing an easy setup for telemetry communication between your autopilot and ground station. It runs on open-source firmware optimized for MAVLink packet handling and integrates seamlessly with Mission Planner, Ardupilot, QGroundControl, and PX4 Autopilot. Available in 915 MHz or 433 MHz variants, users should select the model appropriate for their country or region. Note: This latest batch of SiK Telemetry Radio V3 does not support firmware upload via Mission Planner version 1.3.75 or older. Use Mission Planner version 1.3.75.1 or newer if firmware update is required. Firmware upgrades via QGroundControl are not currently supported for this version. Features: 1. Open-source SiK firmware 2. Plug-and-play for Pixhawk Standard Flight Controllers 3. Simple setup for autopilot and ground station communication 4. Interchangeable air and ground radio functionality 5. Micro-USB port (Type-C adapter cable included) 6. 6-position JST-GH connector Specifications: Name: Holybro Item Name: SiK Telemetry Radio V3 Power: 100 mW maximum output power (adjustable), -117 dBm receive sensitivity Connector: RP-SMA Two-way full-duplex communication via adaptive TDM UART interface Transparent serial link MAVLink protocol framing Frequency Hopping Spread Spectrum (FHSS) Configurable duty cycle Error correction capable of correcting up to 25% bit errors Open-source SiK firmware Configurable through Mission Planner and APM Planner FT230X USB to basic UART IC Dimensions: 28 x 53 x 10.7 mm (without antenna) Electrical Data: Supply Voltage: 5V DC (via USB or JST-GH) Transmit Current: 100 mA at 20 dBm Receive Current: 25 mA Serial Interface: 3.3 V UART Package Included: 2 x Radio modules with antennas 1 x Micro-USB to USB-A cable 1 x Micro-USB to Micro-USB OTG adapter cable 1 x Micro-USB to Type-C adapter 1 x JST-GH-6P to JST-GH-6P cable (for Pixhawk Standard FC) 1 x JST-GH-6P to Molex DF13 6P cable (for Pix32, Pixhawk 2.4.6, etc.)