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.
433MHz Frequency Range
Receiver sensitivity to -117dBm
Transmit power up to 20dBm (100mW)
Transparent serial link
Air data rates up to 250kbps
MAVLink protocol framing and status reporting
Frequency hopping spread spectrum (FHSS)
Adaptive time division multiplexing (TDM)
Support for LBT and AFA
Configurable duty cycle
Built in error correcting code (can correct up to 25% data bit errors)
Demonstrated range of several kilometers with a small omni antenna
Can be used with a bi-directional amplifier for even more range
Open source firmware
AT commands for radio configuration
RT commands for remote radio configuration
Adaptive flow control when used with APM
Based on HM-TRP radio modules, with Si1000 8051 micro-controller and Si4432 radio module
Parameters:
Product name: 3dr radio Telemetry module
Range: 433MHz
Antenna connectors: RP-SMA connector
Power: 500MW
Sensitivity: -117dbm Sensitivity
Interface: Standard TTL UART
Connection status: LED indicators
Net weight: 63g
Air module type: 51 x 30 x 10mm / 12g
Dimensional modular module: 70 x25 x12 mm / 15 g
1 x 433 telemetry radio base station (USB connection)
2 x 500MW radio telemetry
1 x wire
2 x TV antennas
