HOLYBRO Microhard Telemetry Radio V2
HOLYBRO Microhard Telemetry Radio – Professional Data Radio System for UAVs and Unmanned Systems The HOLYBRO Microhard Telemetry Radio is a high-performance telemetry and data radio system for UAVs, UGVs, robotic platforms and other unmanned systems. It integrates a professional Microhard Pico Series RF module and enables robust wireless transmission of serial data between the vehicle, flight controller and ground station. Depending on the Microhard variant used, the radio system supports different network topologies including Point-to-Point, Point-to-Multipoint and, with the P900 version, a self-organizing mesh network with automatic routing. This makes the system suitable for both conventional telemetry links and more complex communication architectures involving multiple network participants. For robust wireless transmission, the system uses Frequency Hopping Spread Spectrum (FHSS). This technology enables reliable wireless transmission of asynchronous serial data and is particularly suitable for professional applications with demanding communication requirements. Microhard Pico Series RF Technology The HOLYBRO Microhard Telemetry Radio integrates an RF module from the Microhard Pico Series. Different frequency ranges and data rates are available depending on the selected version. The P900 version operates in the 902 to 928 MHz frequency range and additionally supports mesh communication. The P400 version operates in the 410 to 480 MHz range. Permitted frequencies and transmission power depend on the applicable regulations of the respective country or operating location. P900: 902–928 MHz P400: 410–480 MHz P900 Data Rate: up to 276 kbps P860 / P400 Data Rate: up to 345 kbps Point-to-Point and Point-to-Multipoint The Microhard Telemetry Radio supports robust communication structures for different system architectures. In addition to a conventional direct connection between two radio modules, Point-to-Multipoint configurations can also be implemented. Point-to-Point communication Point-to-Multipoint communication Serial data transmission Suitable for more complex radio networks Mesh Network with Automatic Routing The P900 version additionally supports true mesh operation with automatic routing. Multiple compatible radio modules can communicate with each other and forward data within the network. This functionality enables flexible communication networks to be created for applications where multiple unmanned systems, ground stations or other network participants need to be interconnected. Note: Mesh functionality is available exclusively with the P900 version. Frequency Hopping Spread Spectrum The Microhard system uses Frequency Hopping Spread Spectrum (FHSS) for wireless data transmission. The radio communication switches between different frequencies within the available frequency band according to a defined hopping sequence. This technology supports robust data transmission and reduces the impact of individual interference signals within the operating frequency range. Direct Connection to Flight Controllers The HOLYBRO Microhard Telemetry Radio features a 6-pin JST-GH connector. This allows the radio module to be connected directly to the TELEM port of many compatible flight controllers. This enables compact integration of the telemetry system into UAVs, VTOL platforms, UGVs and other autonomous systems. USB-C with Integrated USB-to-UART The current V2 version features a USB-C connector with an integrated USB-to-UART converter. A separate UART-to-USB adapter is therefore no longer required for configuration. A dedicated switch allows the operating mode to be changed for firmware parameter configuration. Settings can be configured either via AT commands through the data port or using Microhard PicoConfig software. Flexible Power Supply The radio module features an XT30 power connector and an integrated high-voltage BEC. This provides a wide input voltage range of 7 to 35 V DC and simplifies integration into different power supply architectures. Input Voltage: 7–35 V DC Power Connector: XT30 Integrated high-voltage BEC Status Indicators Multiple integrated LED indicators provide quick visual monitoring of the operating status and radio connection. UART transmission LED Three-level RSSI indicator Diagnostic port LED Data Integrity and Error Correction For reliable data transmission, the Microhard system supports several mechanisms for detecting and correcting transmission errors. These include 32-bit CRC, configurable retransmissions and Forward Error Correction (FEC). 32-bit CRC Configurable retransmission Forward Error Correction Low-latency transparent data transmission Diagnostics and Network Control A separate diagnostic port provides additional functions for monitoring and managing the radio connection. Transparent remote diagnostics and online network control are supported. Features Professional telemetry and data radio system Microhard Pico Series RF technology Frequency Hopping Spread Spectrum (FHSS) Point-to-Point communication Point-to-Multipoint communication Mesh communication with automatic routing on P900 Data rate up to 276 kbps with P900 Data rate up to 345 kbps with P860 and P400 Low-latency transparent data transmission 6-pin JST-GH connector for compatible flight controllers USB-C connector Integrated USB-to-UART converter Configuration via AT commands or PicoConfig XT30 power connector Integrated high-voltage BEC 7 to 35 V DC input voltage UART transmission LED Three-level RSSI indicator Diagnostic port LED 32-bit CRC Configurable retransmission Forward Error Correction (FEC) Remote diagnostics and network control Technical Specifications Product HOLYBRO Microhard Telemetry Radio RF Module Microhard Pico Series P900 Frequency Range 902–928 MHz P400 Frequency Range 410–480 MHz P900 Data Rate up to 276 kbps P860 / P400 Data Rate up to 345 kbps Radio Technology Frequency Hopping Spread Spectrum (FHSS) Network Topologies Point-to-Point, Point-to-Multipoint Mesh P900 version Flight Controller Connector 6-pin JST-GH USB USB Type-C USB-to-UART Integrated Power Supply 7–35 V DC Power Connector XT30 Configuration AT Commands / PicoConfig Error Detection 32-bit CRC Error Correction Forward Error Correction (FEC) For Professional Unmanned Systems The HOLYBRO Microhard Telemetry Radio is suitable for professional UAV, VTOL, UGV and robotics applications requiring a powerful and flexible radio connection between unmanned systems and ground stations. With support for multiple network topologies, FHSS, error correction and – with the P900 version – mesh communication, the system can also be integrated into more extensive communication architectures. Direct JST-GH connectivity, USB-C configuration and the wide input voltage range simplify integration into custom-developed unmanned systems. Note: Frequency range, transmission power and operating mode must be selected and configured in accordance with the applicable radio regulations of the respective country and operating location.
HOLYBRO SiK Telemetry Radio - Long Range
HOLYBRO SiK Long Range Telemetry Radio 1W – Long-Range Telemetry Radio System for UAVs The HOLYBRO SiK Long Range Telemetry Radio is a compact and powerful telemetry radio system for UAVs and other unmanned systems. Compared with the standard version, the Long Range version provides higher transmission power and is designed for applications requiring greater communication distances between the vehicle and ground station. The system is based on the open-source SiK firmware and is specifically designed for reliable MAVLink data transmission. It can be used with Pixhawk Standard flight controllers and other compatible autopilot systems and supports PX4, ArduPilot, Mission Planner, and QGroundControl. The radio modules are available in 433 MHz or 915 MHz versions and provide a maximum RF output power of up to 1 W. When selecting and configuring the frequency version and transmission power, the applicable regulations of the country or region of operation must be observed. Long-Range Telemetry The SiK Long Range Telemetry Radio establishes a bidirectional data link between the flight controller of an unmanned system and the ground station. With a maximum transmission power of up to 1 W, the Long Range version is particularly suitable for applications requiring communication over greater distances. The actual achievable range depends on several factors, including the frequency band, permitted transmission power, antenna configuration, installation position, terrain, line of sight, radio interference, and selected data rate. Up to 1 W Transmission Power The Long Range version supports a maximum RF output power of 1 W or 30 dBm. This distinguishes it from the lower-power versions of the standard SiK Telemetry Radio. Maximum RF Output Power: 1 W Maximum Transmission Power: 30 dBm Designed for long-range telemetry applications High-gain omnidirectional antennas included 433 MHz or 915 MHz The HOLYBRO SiK Long Range Telemetry Radio is available in different frequency versions. Depending on the selected version, the system operates in the 433 MHz or 915 MHz frequency band. Available frequencies and permitted transmission power vary depending on the country and region. Before operation, users must verify which frequency bands, transmission power levels, and operating modes are permitted at the intended location. Plug-and-Play for Pixhawk The telemetry system is designed for straightforward integration with Pixhawk Standard flight controllers. The air module can be connected to a compatible telemetry port on the flight controller using the 6-pin JST-GH connector. The air and ground modules are interchangeable, allowing both radio modules to be used flexibly according to the specific system configuration. Open-Source SiK Firmware The radio modules use the proven open-source SiK firmware. It was specifically developed for MAVLink telemetry applications and provides a transparent serial data link between the flight controller and ground station. Open-source SiK firmware Optimized for MAVLink data transmission Transparent Serial Link MAVLink Protocol Framing Suitable for PX4 and ArduPilot Compatible with PX4 and ArduPilot The HOLYBRO SiK Long Range Telemetry Radio can be used with compatible flight controllers running PX4 or ArduPilot. On the ground station side, the system can be used with software including Mission Planner and QGroundControl. Pixhawk Standard flight controllers PX4 ArduPilot Mission Planner QGroundControl MAVLink Bidirectional Communication The system provides bidirectional data communication through an adaptive TDM-UART interface. This allows telemetry data to be transmitted from the vehicle to the ground station while data from the ground station can simultaneously be sent back to the flight controller. Depending on the autopilot and ground station software used, information such as flight status, position data, system information, mission data, and parameters can be exchanged through the telemetry connection. Bidirectional data communication Adaptive TDM-UART interface Transparent serial connection MAVLink Protocol Framing 3.3 V UART Interface Communication with the flight controller is provided through a 3.3 V UART interface. A 6-pin JST-GH connector is provided for connection to Pixhawk Standard flight controllers. Serial Interface: 3.3 V UART Flight Controller Connector: 6-pin JST-GH Power Connector: XT30 USB Interface An integrated FT230X/FT231 USB-to-UART IC provides USB communication, allowing the radio module to be connected to a ground station or compatible computer system. The 1 W radio pair includes a USB-C to USB-C cable for connection to compatible devices. Power Supply The 1 W version supports a wide input voltage range of 7 to 28 V DC. Power is supplied through an XT30 connector. Input Voltage: 7–28 V DC Power Connector: XT30 Transmit Current: approx. 400 mA at 12 V and 30 dBm Receive Current: approx. 30 mA at 12 V High-Gain Antennas The 1 W radio pair is supplied with two high-gain omnidirectional antennas. Antenna configuration is an important factor affecting both connection quality and achievable communication range. For a reliable telemetry connection, the antennas should be installed according to their intended polarization and positioned as far as practical from shielding materials or components such as carbon fiber, metal, or large electronic assemblies. Features Long-range telemetry radio system Maximum RF output power up to 1 W / 30 dBm Open-source SiK firmware Optimized for MAVLink communication Plug-and-play for Pixhawk Standard flight controllers Compatible with PX4 Compatible with ArduPilot Supports Mission Planner Supports QGroundControl Available in 433 MHz or 915 MHz versions Bidirectional communication Adaptive TDM-UART interface Transparent serial data link MAVLink Protocol Framing Interchangeable air and ground modules 6-pin JST-GH connector 3.3 V UART interface Integrated FT230X/FT231 USB-to-UART IC 7–28 V DC power supply High-gain omnidirectional antennas included Technical Specifications Product: HOLYBRO SiK Long Range Telemetry Radio Firmware: Open-source SiK firmware Frequency Versions: 433 MHz / 915 MHz Maximum RF Output Power: 1 W / 30 dBm Communication: Bidirectional Data Link: Transparent Serial Link Protocol Support: MAVLink Protocol Framing Serial Interface: 3.3 V UART Flight Controller Connector: 6-pin JST-GH USB-to-UART: FT230X/FT231 Input Voltage: 7–28 V DC Power Connector: XT30 Transmit Current: approx. 400 mA at 12 V / 30 dBm Receive Current: approx. 30 mA at 12 V Compatibility: PX4 and ArduPilot Ground Station Software: Mission Planner and QGroundControl 915 MHz Version FCC ID: 2BNF8-HT051WRF915 FCC Version: 100 mW Frequency Range: 915.06–927.04 MHz Package Contents 2 × HOLYBRO SiK Long Range 1W Radio Modules 2 × High-Gain Omnidirectional Antennas 1 × USB-C to USB-C Cable 1 × XT30 Male to XT30 Female Adapter Cable 1 × XT30 Male to XT60 Female Adapter Cable 1 × JST-GH 6-Pin to JST-GH 6-Pin Cable for Pixhawk Standard flight controllers 3 × Rubber Vibration Dampers Long-Range Telemetry for Unmanned Systems The HOLYBRO SiK Long Range Telemetry Radio provides a powerful telemetry solution for UAVs, VTOL platforms, and other unmanned systems. With a maximum RF output power of up to 1 W, the Long Range version is designed for applications requiring greater communication range compared with conventional SiK telemetry systems. The combination of open-source SiK firmware, MAVLink support, bidirectional data transmission, and direct integration with Pixhawk-based systems makes the radio set suitable for both development platforms and individually configured professional unmanned systems.
HOLYBRO SiK Telemetry Radio V3
HOLYBRO SiK Telemetry Radio – Telemetry Radio Link for Pixhawk, PX4 and ArduPilot The HOLYBRO SiK Telemetry Radio is a compact telemetry radio system for wireless data transmission between a flight controller and a ground station. It has been developed specifically for UAVs and other unmanned systems and enables telemetry data to be transmitted via a transparent serial radio link. The system is based on open-source SiK firmware and is optimized for MAVLink data transmission. This makes it particularly suitable for systems based on ArduPilot and PX4 as well as ground station software such as Mission Planner and QGroundControl. When used with Pixhawk Standard flight controllers, the telemetry system can be integrated easily via the existing JST-GH connector. Depending on the version, the radio system operates in the 433 MHz or 915 MHz frequency range. The applicable national radio regulations must be observed when selecting and operating the appropriate frequency version. Telemetry Between UAV and Ground Station The HOLYBRO SiK Telemetry Radio establishes a bidirectional data link between the flight controller and a ground station. During operation, telemetry data can be transmitted and, depending on the autopilot and ground station software being used, parameters, mission data and additional information can be exchanged. The system operates as a transparent serial radio connection. MAVLink protocol framing is also available for MAVLink-based applications. For Pixhawk, PX4 and ArduPilot The HOLYBRO SiK Telemetry Radio is designed for straightforward integration with Pixhawk Standard flight controllers. The 6-pin JST-GH connector allows the radio module to be connected directly to a compatible telemetry port on the flight controller. Compatible with Pixhawk Standard flight controllers Suitable for ArduPilot Suitable for PX4 Integration with Mission Planner Integration with QGroundControl Optimized for MAVLink communication 433 MHz or 915 MHz The telemetry system is available in different frequency versions. The 915 MHz version operates in the 902 to 928 MHz range, while the 433 MHz version supports a frequency range of 414 to 460 MHz. Permitted frequencies and transmission power depend on the legal regulations of the respective country or region. 915 MHz Version: 902–928 MHz 433 MHz Version: 414–460 MHz Range Under suitable conditions, the HOLYBRO SiK Telemetry Radio can achieve a radio range of more than 300 meters using the standard configuration. With an appropriate antenna setup, such as a directional patch antenna at the ground station, the achievable range can be increased significantly. Actual range depends on factors including transmission power, antennas, frequency band, data rate, installation position, surrounding environment and existing radio interference. Frequency Hopping Spread Spectrum The system supports Frequency Hopping Spread Spectrum (FHSS) for radio transmission. Communication can therefore be distributed across multiple frequency channels within the available frequency range. Frequency Hopping Spread Spectrum (FHSS) Up to 50 frequency-hopping channels Configurable duty cycle Network ID from 0 to 255 Point-to-point network topology Bidirectional Data Transmission The HOLYBRO SiK Telemetry Radio enables bidirectional communication via an adaptive TDM-UART interface. Data can therefore be transmitted both from the UAV to the ground station and from the ground station to the flight controller. Bidirectional radio communication Adaptive TDM-UART interface Transparent serial data connection MAVLink protocol framing Configurable RF Data Rate The radio data rate can be configured according to the specific application. Multiple data rates from 2 to 250 kbps are supported. The default RF data rate is 64 kbps. 2 kbps 4 kbps 8 kbps 16 kbps 32 kbps 64 kbps default 96 kbps 128 kbps 192 kbps 250 kbps Serial Interface The connection to the flight controller uses a 3.3 V UART interface. The serial data rate can be configured between 1.2 and 115.2 kbps. The default interface data rate is 57.6 kbps. Interface: 3.3 V TTL UART Default Data Rate: 57.6 kbps Configurable: 1.2 to 115.2 kbps Connector: 6-pin JST-GH High Receiver Sensitivity The HOLYBRO SiK Telemetry Radio provides high receiver sensitivity depending on the selected RF data rate. Lower data rates can therefore support particularly robust radio communication. Receiver Sensitivity at 2 kbps: -121 dBm Receiver Sensitivity at 64 kbps: -105 dBm Error Correction The open-source SiK firmware includes integrated error correction. According to the manufacturer, up to 25% bit errors can be corrected, supporting reliable data transmission under challenging radio conditions. Configuration The radio modules can be configured using Mission Planner or corresponding AT commands. This allows data rate, network parameters and additional radio settings to be adapted to the specific application. Features Open-source SiK firmware Telemetry radio link for UAVs and unmanned systems Plug-and-play for Pixhawk Standard flight controllers Compatible with PX4 and ArduPilot Optimized for MAVLink Supports Mission Planner and QGroundControl Bidirectional communication Transparent serial connection Adaptive TDM-UART communication Available in 433 MHz or 915 MHz versions Frequency Hopping Spread Spectrum (FHSS) Up to 50 frequency-hopping channels Configurable RF data rate up to 250 kbps Configurable serial data rate Integrated error correction Interchangeable air and ground radio modules RP-SMA antenna connector Technical Specifications Product: HOLYBRO SiK Telemetry Radio Firmware: Open-source SiK Communication: Bidirectional Protocol: Transparent serial connection / MAVLink framing Frequency Range: 902–928 MHz or 414–460 MHz RF Data Rate: 2 / 4 / 8 / 16 / 32 / 64 / 96 / 128 / 192 / 250 kbps Default RF Data Rate: 64 kbps Serial Data Rate: 1.2–115.2 kbps Default UART Data Rate: 57.6 kbps Serial Interface: 3.3 V TTL UART Connector: 6-pin JST-GH Antenna Connector: RP-SMA Female Network ID: 0–255 Frequency-Hopping Channels: up to 50 Network Topology: Point-to-point Configuration: Mission Planner or AT commands Operating Temperature: -40 °C to +85 °C Electrical Specifications 100 mW and 500 mW Versions: 5 V DC via USB or JST-GH 1 W Version: 7–28 V DC via XT30 Transmit Current: 100 mA at 20 dBm Receive Current: 25 mA UART Logic Level: 3.3 V Dimensions and Weight Air Radio: 28 × 53 × 10.7 mm without antenna Ground Radio: 66.5 × 32 × 16.5 mm without antenna Air Radio Weight: 23.5 g including antenna Ground Radio Weight: 67 g including antenna Package Contents – 100 mW Version 2 × HOLYBRO SiK Telemetry Radio Modules 2 × Antennas 1 × Micro-USB to USB-A Cable 1 × Micro-USB OTG Adapter Cable 1 × Micro-USB to USB-C Adapter 1 × JST-GH 6-Pin to JST-GH 6-Pin Cable for Pixhawk Standard flight controllers 1 × JST-GH 6-Pin to Molex DF13 6-Pin Cable for compatible older flight controllers Telemetry for Professional Unmanned Systems The HOLYBRO SiK Telemetry Radio provides a straightforward way to establish a bidirectional telemetry connection between a UAV and a ground station. Especially when used with Pixhawk flight controllers, PX4 or ArduPilot, the system enables important flight and system data to be transmitted over a dedicated radio link. With its open SiK firmware, MAVLink support, configurable data rates and FHSS capability, the telemetry system is suitable for both development platforms and custom-built UAV, VTOL and other unmanned systems.