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$69.99
Availability: Out Of Stock

Specification:

  • Radio Telemetry Kit (915Mhz) 
  • The Drotek telemetry system base on the 3DR Radio system and 100% compatible. 
  • It's designed as anopen source Xbee replacement radio set, offering a lower price, longer range (approx one mile) and superior performance to Xbee radios.
  • 915Mhz and in the following configuration:  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.

 Telemetry kit

 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

Air Module:

  • Supply voltage: 3.5-6 VDC 
  • Serial interface: 3.3 V UART
  • 30 mm x 46 mm x 10 mm (without antenna)

 Ground Module:

  • Micro USB port
  • 25 mm x 52 mm x 12 mm (without antenna) 

Package content:

  • Air Module x 1
  • Ground Module x 1
  • UART 6Pin cable for Air module 300mm x1
  • 2.5dbi Antenna for two module x2
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