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900Mhz Telemetry for ArduFlyer

900Mhz Telemetry for ArduFlyer
Price: $49.00

The RCTimer 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 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.

Features

  • Small size and light weight
  • Available in 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)
  • 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: http://www.hoperf.com/upload/rf_app/HM-TRP.pdf
Documentation: http://code.google.com/p/ardupilot-mega/wiki/3DRadio
Radio Configurator(Air module need a USB-UART tool like FTDI to configure): http://www.rctimer.com/download/RCTIMER_Radio.rar
Board schmatic:

Other
         ·Dimension: Air / Ground module(no include SMA connector) : 17mx35mm / 17mmx59mm
         ·Weight: Air / Ground module: 4.6g/16.8g(include cable and antenna) / 7.2g/17g(include antenna)

Package content

  • Air Module( 915Mhz) x 1
  • Ground Module(915Mhz) x 1
  • UART 4Pin cable for Air module 300mm x1
  • 2.5dbi Antenna for two module x2

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