Radio Telemetry Kit (433Mhz or 915Mhz)

The Drotek 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 433Mhz or 915Mhz 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.

HM-TRP features:

• Small size and light weight
• Available in 433Mhz and 915MHz 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)
• 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
• Based on the HopeRF HM-TRP radio module, with an SiLabs Si1000 RF microcontroller
• Transmit current: 100 mA at 20 dBm
• Receive current: 25 mA

Board features:

• Supply voltage: 3.3-5 VDC
• Serial interface: 3.3 V UART
• JST-GH connector
• Micro USB port
• SMA connector
• Weight: 6g
• 17 mm x 52 mm
• Designed and manufactured in France

Package content:

• Telemetry module x2
• JST-GH 6Pin cable x2

Download:

• Datasheet of HM-TRP
• Radio Configurator