This Holybro SiK Telemetry Radio is a small, light and inexpensive open source radio platform that typically allows ranges of better than 300m "out of the box" (the range can be extended to several kilometres with the use of a patch antenna on the ground).

This radio is plug-n-play all Pixhawk Standard and other Flight Controller, providing the easiest ways to setup a telemetry connection between your Autopilot and a ground station. It uses open source firmware which has been specially designed to work well with MAVLink packets and to be integrated with the Mission Planner, Ardupilot, QGroundControl, PX4 Autopilot.

The radios can be either 915Mhz or 433Mhz and you should purchase the model which is appropriate for your country/region.

1. Open-source SIK firmware

2. Plug-n-play for Pixhawk Standard Flight Controllers

3. Easiest way to connect your Autopilot and Ground Station

4. Interchangeable air and ground radio

5. Micro-USB port (Type-C Adapter Cable Included)

6. 6-position JST-GH connector

Brand Name: Holybro

Item Name: SiK Telemetry Radio V3

Power: 100 mW maximum output power (adjustable) -117 dBm receive sensitivity

Connector: RP-SMA

2-way full-duplex communication through adaptive TDM UART interface

Transparent serial link

MAVLink protocol framing

Frequency Hopping Spread Spectrum (FHSS) Configurable duty cycle

Error correction corrects up to 25% of bit errors Open-source SIK firmware

Configurable through Mission Planner & APM Planner

FT230X is a USB to BASIC UART IC

28 x 53 x 10.7mm (without antenna)

Supply Voltage: 5V DC (from USB or JST-GH)

Transmit Current: 100 mA at 20dBm

Receive Current: 25 mA

Serial Interface: 3.3 V UART

2x Radio modules with antennas 

1x Micro-USB to USB-A cable 

1x Micro-USB to Micro-USB OTG adapter cable 

1x Micro USB to Type C Adapter

1x JST-GH-6P to JST-GH-6P cable (for Pixhawk Standard FC)

JST-GH-6P to Molex DF13 6P (for Pix32, Pixhawk 2.4.6, etc.)