Single TTL 3DRobotics 3DR Radio Telemetry Kit 915Mhz Module for APM APM2.5 Flight Control
  • Single TTL 3DRobotics 3DR Radio Telemetry Kit 915Mhz Module for APM APM2.5 Flight Control
  • Single TTL 3DRobotics 3DR Radio Telemetry Kit 915Mhz Module for APM APM2.5 Flight Control

  • SKU:26275
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  • Price:$36.90
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Single TTL 3DRobotics 3DR Radio Telemetry Kit 915Mhz Module for APM APM2.5 Flight Control

Description:
- 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.

Features
- Small size and light weight
- Available in 915MHz or 433MHz variants(this listing for 915Mhz)
- 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://vps.oborne.me/3drradioconfig.zip
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 included:
- 1 x Single TTL 3DRobotics 3DR Radio Telemetry Kit 915Mhz

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