NGA-602 DRM Monitoring Receiver
The Newglee NGA-602 DRM Monitoring Receiver is professional-grade DRM digital broadcasting monitoring equipment dedicated to the reception, decoding and analysis of DRM (Digital Radio Mondiale) signals. It features a full web-based interface supporting real-time spectrum monitoring, service selection, signal-quality analysis, logging and record/playback.
- Concurrent Multi-Service Processing: simultaneously decodes and displays up to 4 DRM services, including audio, text messages, SlideShow and structured text-and-image services
- Advanced Signal Analysis: real-time monitoring of MER (Modulation Error Ratio), SNR (Signal-to-Noise Ratio), RF level and synchronization status
- Recording and Playback: up to 2 hours of raw IQ signal recording for offline analysis
- Alarm Management: configurable threshold alarms for MER and RF level, with historical logging
- Web Interface: a modern, responsive interface accessible from any standard browser
- Highlights
- Specifications
- Documentation
- Frequency range: 500 kHz – 30 MHz (mediumwave/shortwave)
- Supported modes: MF/HF band robustness modes A/B/C/D
- Decoding: USAC/HE-AACv2 audio decoding; MOT SlideShow / structured text-and-image services / text message parsing
- Interfaces: dual gigabit Ethernet ports, USB, front-panel LCD and button control
- Recording: IQ-format recording, up to 2 hours continuous, with 512 GB built-in storage
- Alarms: configurable alarms for MER, RF level and audio status
| Category | Parameter / Description |
|---|---|
| DRM Features | |
| Robustness modes | A/B/C/D (DRM30 standard) |
| Technical standards | ETSI ES 201 980 DRM specification and GY/T 423-2025 |
| Frequency range | 500 kHz – 30 MHz |
| Supported bandwidths | 4.5/5/9/10/18/20 kHz |
| Modulation | 4QAM/16QAM/64QAM |
| Audio codec | USAC/HE-AACv2 |
| Data services | MOT SlideShow / structured text-and-image services / text messages |
| Max. concurrent services | 4 simultaneous |
| Signal Monitoring | |
| Linearity | +10 dBm IIP3 |
| Dynamic range | 100 dB BDR |
| MER range | 0–70 dB, ±0.5 dB accuracy |
| SNR range | 0–70 dB, ±0.5 dB accuracy |
| Synchronization | Automatic detection and tracking |
| Input / Output Interfaces | |
| RF input | 1 × BNC signal input |
| Network interfaces | 2 × 10/100/1000BASE-T (RJ-45) for system management and data output (with remote data backup) |
| USB interface | 1 × Type-A, for device configuration and future feature expansion |
| GPS interface | Optional external time-synchronization input |
| RS232 interface | 1 × UART configuration interface |
| Monitoring and Recording | |
| Spectrum display | Real-time FFT spectrum and waterfall |
| Data logging | CSV export (automatic/manual modes) |
| Recording format | 16-bit IQ sample data |
| Max. single recording | 2 hours |
| Storage capacity | 512 GB built-in |