Technical Specifications
MastNode is built with professional-grade components to ensure reliable AIS data collection, secure communication, and stable operation in real-world maritime environments. The following specifications outline the core technologies and hardware capabilities behind MastNode’s performance.
AIS Receiver
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True dual-channel AIS reception
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Frequency bands: 161.975 MHz & 162.025 MHz (simultaneous)
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Modulation: GMSK, 9,600 bps
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Channel bandwidth: 25 kHz
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Receiver sensitivity: ≤ –117 dBm
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Maximum input level: 0 dBm
GNSS & Timing
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Integrated GNSS module (GPS)
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PPS (Pulse Per Second) support for precise time synchronizatio
Connectivity & Interfaces
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Wi-Fi: 2.4 GHz IEEE 802.11 b/g/n
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Ethernet: 10/100 Mbps RJ45
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USB interface
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Network protocols: TCP/IP & UDP/IP for device and MastChain network communication
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External AIS data output: not supported by default — third-party AIS/NMEA/AIVDM streaming is not a standard MastNode feature
Security
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Hardware-based cryptographic security
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Integrated secure element for device identity and data integrity
System
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Operating system: Linux-based
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Local data storage via Micro SD card
Power & Environmental
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Power input: USB-C, 5V / min. 2.5A
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Operating temperature: –20°C to +65°C
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Built-in ESD protection
Physical
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Dimensions: 121.5 × 89.5 × 44 mm
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Weight: ~150 g
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Industrial-grade enclosure with protective corner guards
Important – AIS Data Usage & Third-Party Streaming
MastNode is a purpose-built AIS + GNSS DePIN device designed primarily for operation within the MastChain network. It is not marketed as a general-purpose standalone AIS network receiver.
References to TCP/IP and UDP/IP in the specifications describe the device’s network communication capabilities and do not indicate user-configurable AIS data output or streaming.
MastNode does not provide, as a standard feature, AIS/NMEA/AIVDM output over TCP/UDP, a user-accessible AIS TCP/UDP server, or unrestricted forwarding of received AIS data to third-party servers or applications.
Any future external AIS data output or third-party streaming functionality is subject to MastChain firmware capabilities, network policies, and authorization.
Important – Returns After Onboarding
Once a MastNode is onboarded to the MastChain network, its integrated secure element is permanently and irreversibly paired to your operator account. The cryptographic chip cannot be re-provisioned or reset for another user, so an onboarded (activated) device cannot be restocked, resold or returned.
Pre-orders can be cancelled for a full refund at any time before the device ships. After delivery, the statutory 14-day right of withdrawal applies only to devices that have not been onboarded to the network. Your statutory warranty rights for defective products are not affected. See our Refund and Returns Policy.



