The Drotek telemetry system base on 3DR Radio system and 100% compatible. Designed as an open source Xbee replacement radio set, offering a lower price, longer range (approx one mile) and superior performance to Xbee radios. The Drotek Radio Telemetry Kit provides a full-duplex link using HopeRF's HM-TRP modules running custom, open source firmware.
The Drotek Radio Telemetry Kit is available in 433Mhz or 915Mhz and in the following configurations: serial board (for the air) and USB (for the ground). 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.
Warning : Frequency/power level regulations vary by country, so consult your local airspace authority to find out which frequency and power level are legal in your area. In Europe you should use the 433 MHz
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
This package includes :
2x Telemetry module
2x JST-GH 6 Pins cable
Attention : Frequency/power level regulations vary by country, so consult your local airspace authority to find out which frequency and power level are legal in your area. In Europe you should use the 433 MHz