[HOLYBRO] Microhard P900 Radio



BENEFITS 

–USB Type-C port, integrated USB to UART converter

–6-position JST-GH connector, can be directly connected to the TELEM port on various flight controller such 

as the pixhawk 4

–High voltage BEC onboard, Support DC7~35V voltage supply

–UART transmission LED indicator

–Three-stage RSSI LED indicator 

–Transmission within a public, license-exempt band of the radio spectrum 

–Transparent, low latency link rates up to 276 kbps 

–Supports a robust true Mesh operation with auto-routing 

–32 bits of CRC, selectable retransmission and forward error correction

–Separate diagnostics port, transparent remote diagnostics and online network control

SPECIFICATIONS

Status LEDs 

P900 Radio have 6 status LEDs, there are three blue, two orange and one green LEDs. The meaning of the different LEDs are:

Power LED(green) 

This LED will illuminate when the P900 Radio is connected to a power source (7-35VDC). 

TX LED (orange) 

When illuminated, this LED indicates that the Radio is transmitting data over the air. 

RX LED (orange) 

This LED indicates that the Radio is synchronized and has received valid packets. 

RSSI LEDs (3x Blue)

As the received signal strength increases, starting with the furthest left, the number of active RSSI LEDs increases. Signal strength is calculated based on the last four valid received packets with correct CRC. The value of RSSI is reported in S123

RSSI LEDs(blue) - indicate the receive signal strength. 

Power Port 

4-position JST-GH. The input Voltage range is 7-35 Vdc. The Radio is powered by the Power Port only. Please connect the power supply when in use and configuration.

Power Consumption 

Supply voltage: DC7~35V from 4-position JST-GH 

Transmit current: 200 mA/7V at 20dBm 

350mA/7V at 27dBm 

800 mA/7V at 30dBm
 Receive current: 100 mA 

Weight: 42g (without antenna)

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[HOLYBRO] Microhard P900 Radio



BENEFITS 

–USB Type-C port, integrated USB to UART converter

–6-position JST-GH connector, can be directly connected to the TELEM port on various flight controller such 

as the pixhawk 4

–High voltage BEC onboard, Support DC7~35V voltage supply

–UART transmission LED indicator

–Three-stage RSSI LED indicator 

–Transmission within a public, license-exempt band of the radio spectrum 

–Transparent, low latency link rates up to 276 kbps 

–Supports a robust true Mesh operation with auto-routing 

–32 bits of CRC, selectable retransmission and forward error correction

–Separate diagnostics port, transparent remote diagnostics and online network control

SPECIFICATIONS

Status LEDs 

P900 Radio have 6 status LEDs, there are three blue, two orange and one green LEDs. The meaning of the different LEDs are:

Power LED(green) 

This LED will illuminate when the P900 Radio is connected to a power source (7-35VDC). 

TX LED (orange) 

When illuminated, this LED indicates that the Radio is transmitting data over the air. 

RX LED (orange) 

This LED indicates that the Radio is synchronized and has received valid packets. 

RSSI LEDs (3x Blue)

As the received signal strength increases, starting with the furthest left, the number of active RSSI LEDs increases. Signal strength is calculated based on the last four valid received packets with correct CRC. The value of RSSI is reported in S123

RSSI LEDs(blue) - indicate the receive signal strength. 

Power Port 

4-position JST-GH. The input Voltage range is 7-35 Vdc. The Radio is powered by the Power Port only. Please connect the power supply when in use and configuration.

Power Consumption 

Supply voltage: DC7~35V from 4-position JST-GH 

Transmit current: 200 mA/7V at 20dBm 

350mA/7V at 27dBm 

800 mA/7V at 30dBm
 Receive current: 100 mA 

Weight: 42g (without antenna)

자세한 설명은 첨부 파일을 다운로드하여 사용하십시오