Descriptions:
We are dedicated to providing you with high quality products for years. Our products are offered with excellent quality, beautiful facade, delicate design artwork, safe package, competitive price and delivery on time. The 3DR Radio telemetry system is designed as an open source Xbee replacement radio set.
 
Feature:
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:
Light weight and small in size, portable and convenient
Receiver sensitivity to -121 dBm
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

Package Includes:
1X Air Module (433Mhz)
1XGround Module (433Mhz)
1X Cable for APM
1X Cable for Pixhawk
2X Antenna