Description



Holybro Microhard Telemetry Radio integrates a Microhard Pico Series RF module, which is capable of delivering high-performance wireless serial communications in robust topologies, such as Point to Point, Point to Multipoint, and secure Mesh (Mesh only available on P900).
It uses frequency hopping spread spectrum (FHSS) technology, providing reliable wireless asynchronous data transfer between most equipment types that employ a serial interface. The radio can be configured using AT commands through the Data port or using the PicoConfig application through the USB. V2 design now does not require a UART to USB adapter for configuration; a dedicated switch enables easy mode change to change firmware parameters.
P900 Radio operates within the 902-928 MHz ISM frequency band, and P400 operates within 410-480MHz. You can select your radio based on your region’s legal frequency band.
Feature
USB Type-C port, integrated USB to UART converter
6-pin JST-GH connector, which can be directly connected to the TELEM port on various flight controllers
XT30 power port with high voltage BEC onboard, supports DC7~35V voltage supply
UART transmission LED indicator
Three-stage RSSI LED indicator
Diagnostic Port LED indicator
Transmission within a public, license-exempt band of the radio spectrum
Transparent, low-latency link rates up to 276 kbps (P900) and 345 kbps (P860 & P400)
Supports a robust true Mesh operation with auto-routing (P900 Only)
32 bits of CRC, selectable retransmission, and forward error correction
Separate diagnostics port, transparent remote diagnostics, and online network control
P900 V2 Specification
Frequency Range:902 to 928 MHz
Transmit Power(software adjustable):100mW to 1W (20-30dBm)
Link Rate:Up to 276 kbps
Serial Baud Rate:Up to 230.4 kbps asynchronous
Spreading Method:Frequency Hopping Spread Spectrum (FHSS)
Operating Modes:Mesh, Point-to-Point, Point-to-Multipoint, Store and Forward,
Auto Routing, Self-Healing, Packet Routing Modes
Input Voltage:DC7~35V(4-position JST-GH)
Power Consumption:Sleep < 1mA Idle 3.5mA Rx: 45mA to 98mA Tx: 1000mA to 1400mA
Error Detection:32 bits of CRC, ARQ
Antenna Gain:5dBi
Weight:51g (w/o antenna) 81g (/w antenna)
P400-C1S V2 Specification
Frequency Range:410 to 480 MHz
Transmit Power(software adjustable):100mW to 1W (20-30dBm)
Link Rate:Up to 345 kbps
Serial Baud Rate:300 bps to 230 kbps
Spreading Method:Frequency Hopping,GMSK, 2GFSK, 4GFSK, QPSK
Operating Modes:Point-to-Point, Point-to-Multipoint,Store & Forward Repeater, Peer-to-Peer
Input Voltage:DC7~35V (4-position JST-GH)
Power Consumption:Sleep < 1mA Idle 20mA Rx: 45mA to 98mA Tx Peak: 2A
Error Detection:32 bits of CRC, ARQ
Antenna Gain:5dBi
Weight:51g (w/o antenna)76g (/w antenna)
Single Includes:
1x Microhard P900/P400 V2 Radio
1x Antenna
1x XT30 Power cable
1x XT60 Power cable
1x GH 6P to 6P cable
1x Type-C cable
Pair Includes:
2x Microhard P900/P400 V2 Radio
2x Antennas
1x XT30 Power cable
1x XT60 Power cable
1x GH 6P to 6P cable
1x Type-C cable





































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