The Radio 3DR telemetry system is designed as an open source Xbee replacement radio set, offering lower price, longer range and superior performance than Xbee radios.
Open source firmware. The interface to the module is through the standard 5V tolerant USB TTL / FTDI serial.
The SiK firmware includes a bootloader that allows radio firmware updates on the serial interface and radio firmware with configurable parameters. Firmware updates and configuration are fully supported in the APM mission planner. Configuration is also possible via Radio 3DR configurator or AT commands.
Features:
Light weight (less than 4 grams without antenna)
Available in 900MHz or 433MHz versions
Receiver sensitivity to -121 dBm
Over the air data rates up to 250kbps
MAVLink protocol and status reports
Integrated error correction code (can correct up to 25% data bit errors)
Range of several kilometers demonstrated with a small omni antenna
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