Holybro Telemetry Radio is a small, compact, is a lightweight and inexpensive open source radio platform (range can be extended to several kilometers using a patch antenna on the ground). The radio uses open source firmware specifically designed to work well with MAVLink packages and integrate with Mission Planner, Helicopter, Rover and Aircraft.
Radios can be 915Mhz or 433Mhz and you should purchase the appropriate model for your country/region.
Processing:
100 mW maximum output power (adjustable) -117 dBm receiving sensitivity
Open source SIK product software
RP-SMA connector
2-way full-duplex communication via adaptive TDM UART interface
Transparent serial connection
MAVLink protocol framework
Frequency Hopping Spread Spectrum (FHSS) Configurable duty cycle
Error correction fixes up to 25% of bit errors Open source SIK firmware
Task Scheduler and Configurable via APM Planner
FT230X is a USB to BASIC UART IC
Features
Switchable air and ground modules 915 or 433 mHz
Micro USB port
6-position JST-GH connector
• Dimensions
28 x 53 x 10.7 mm (without antenna)
•Power
Supply voltage: 5VDC (from USB or JST-GH)
Transmit current: 100 mA at 20dBm
Receive current: 25 mA
Serial interface: 3.3 V UART
• Status LEDs
The radios have 2 status LEDs, one red and one green. Meaning of the different LED states:
Green LED flashing - searching for another radio
Green LED steady - connection to another radio established
Red LED flashing - data transferring
Stable red LED - in firmware update mode
• Connecting to Pixhawk4
Comes with the radio to connect the radio to "Telem 1" of your Pixhawk4 use the required 6-pin JST-GH connector (“Telem 2” is also available, but the default recommendation is “Telem1”).
• Connecting to a PC
Connecting the radio to your Windows PC It's as simple as connecting the micro USB cable (which should be included with the radio) to your PC. The necessary drivers should automatically install and the radio will appear as a new "USB Serial Port" under Ports (COM and LPT) in the Windows Device Manager. The Planner's COM Port selection drop-down menu must also contain the same new COM port.
Package includes:
radio modules with antenna * 2
Micro USB cable *1
Android OTG adapter cable *1
GH 6P-GH 6P cable *1
MLX 6P-GH 6P cable * 1
SMA Adapter * 2
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