Description:

The 3DR Radio telemetry system is designed as an open source Xbee replacement radio set, offering a lower price, longer range and superior performance to Xbee radios. It?s availabl in 433Mhz; and in the following configurations: serial board (for the air) and USB (for the ground).The radio is a 2-way half-duplex wireless communication system with a standard TTL UART interface, based on HopeRF's HM-TRP data link modules, and custom firmware that improves upon the modules' original features and performance.The SiK firmware includes a bootloader that permits radio firmware upgrades over the serial interface, and radio firmware with configurable parameters. Firmware upgrades and configuration are fully supported in the APM Mission Planner. Configuration is also possible through AT commands.

Specification:

Very small sizeLight weight (under 4 grams without antenna)433-434.79MHzReceiver sensitivity to -121 dBmTransmit power up to 20dBm (100mW)Transparent serial linkAir data rates up to 250kbpsMAVLink protocol framing and status reportingFrequency hopping spread spectrum (FHSS)Adaptive time division multiplexing (TDM)Support for LBT and AFAConfigurable duty cycleBuilt in error correcting code (can correct up to 25% data bit errors)Demonstrated range of several kilometers with a small omni antennaCan be used with a bi-directional amplifier for even more rangeOpen source firmwareAT commands for radio configurationRT commands for remote radio configurationAdaptive flow control when used with APMBased on HM-TRP radio modules, with Si1000 8051 micro-controller and Si4432 radio module

Size:Air Module: 47 × 19 × 6mm (L × W × H)USB dongle: 72 × 17 × 6mm (L × W × H)Antenna size: 106 × 9 × 9mm (L × W × H)Cable: about length 150mmPacking size: 165 * 77 * 13mm (length × width × height)

Product Weight:Air Module: 5gUSB dongle: 8gAntenna (one pair): 17g

Package Contents: Air Module 1, USB dongle 1, 2 cable 15cm long, bendable whip antenna 2