Details about 3DR Radio Telemetry Kit 915Mhz Module For APM


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The Radio telemetry system base on 3DR Radio system and 100% compatible. It's designed as an open source Xbee replacement radio set, offering a lower price, longer range (approx one mile) and superior performance to Xbee radios. It’s available in 915Mhz and 433Mhz; and in the following configurations: serial board (for the air) and USB (for the ground). The system provides a full-duplex link using HopeRF's HM-TRP modules running custom, open source firmware. Interface to the module is via standard 5V-tolerant TTL serial / FTDI USB serial. Firmware upgrades and configuration are fully supported in the APM Mission Planner. Configuration is also possible through the 3DR Radio configurator and AT commands.
•Small size and light weight
•Available in 915MHz or 433MHz variants
•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 the HopeRF HM-TRP radio module, featuring an SiLabs Si1000 RF microcontroller.

Datasheets of HM-TRP module: Documentation: Radio Configurator(Air module need a USB-UART tool like FTDI to configure): Board schmatic:
Product Details
•Dimension: Air / Ground module (no include SMA connector) : 17m x 35mm / 17mm x 59mm
•Weight: Air / Ground module: 4.6g/16.8g (include cable and antenna) / 7.2g/17g (include antenna)
Item Packing
•Air Module(915Mhz) x 1
•Ground Module(433Mhz or 915Mhz) x 1
•UART 4Pin cable for Air module 300mm x1
•2.5dbi Antenna for two module x2

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Safety Tip

This product was added to our catalog on Thursday 14 August, 2014.



Rc-toys Multi Rotor safty Tip Keep your PROPS OFF not installed until you are fully conversant/understand in full the functions of your Tx in full including TRAV (end Points), the arm and disarm procedures - realise that for a noob skiping or out-of-order set-up steps or moving sticks, or even static - PROPS may start at anytime without warning. Never install props prior to calibration of the ESC and testing the gyro orientation, and arm/disarm testing of the board - YOU are responsible - make sure your actions and your Copter is safe. Never ASSUME the props will not start - removing the props removes the risk.

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