BeiDou-3 Civilian Short Message Module – Global RDSS Communication with Emergency Features
HTQ206S
The HTQ206S is a high-performance BeiDou-3 short message communication module from WalliSemi, designed for global text messaging and emergency positioning via China’s RDSS satellite system. This compact SMD module combines S-band (2491.75MHz) messaging with microsecond-level time synchronization, making it ideal for critical communication scenarios beyond cellular coverage.
Specifications
Key Features:
✔ Dual-System Compatibility – Supports BeiDou-3 regional messaging while maintaining BeiDou-1 backward compatibility
✔ Military-Grade Sensitivity – -130dBm (S2C 8kbps) ensures reliable messaging in weak signal conditions
✔ Precision Timing – ≤2μs time synchronization accuracy for navigation systems
✔ Low-Power Design – ≤650mW static power with 3.5A peak transmit current
✔ Rugged SMD Package – 30×35×3.5mm footprint for embedded applications
Target Applications:
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Emergency Rescue Beacons (aviation/maritime)
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Remote Asset Tracking (oil/gas, logistics)
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Disaster Recovery Communications
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Military Field Operations
This module embodies WalliSemi’s vision of “Intelligent Technology, Core to the Future”, delivering ultra-reliable satellite messaging for commercial and government users who operate beyond traditional networks.
| Model | HTQ206S |
| Supported Frequencies | RDSS S-band (S1/S2C signals) Frequency range: 2491.75MHz ±18.16MHz |
| Core Functions | BeiDou-3 regional short message communication Position reporting & emergency rescue Backward compatible with BeiDou-1 system Global short message capability (1 message per signal) |
| Performance Metrics | Receiver sensitivity: S1: ≤-127.6dBm S2C 24kbps: -123.8dBm S2C 14kbps: -127.5dBm S2C 8kbps: -130dBm Bit error rate: 1×10⁻⁶ Time sync accuracy: ≤2μs Dynamic performance: ≤300m/s velocity, ≤10g acceleration |
| Power Consumption | Static: ≤650mW (3.0-5.5V) Transmit current: ≤3.5A |
| Interface | SMD mounting holes for terminal integration |
| Dimensions | 30mm x 35mm x 3.5mm |
| Operating Temperature | -40℃ to +75℃ |