AMEC B620S Class B CSTDMA AIS Transponder with Integrated Splitter
The AMEC B620S combines reliable 2W Class B CSTDMA AIS performance with an integrated VHF antenna splitter in one compact, rugged, and highly efficient package.
Designed for cruisers, sailors, and power-conscious vessels, the B620S simplifies installation by allowing the AIS transponder and VHF radio to share a single VHF antenna—eliminating the need for a second antenna or external splitter while maintaining a clean, reliable wired installation.
- 2W Class B CSTDMA AIS transponder
- Integrated VHF antenna splitter
- Single antenna solution for AIS and VHF
- Low power consumption for continuous operation
Powered by AMEC's latest AIS platform, the B620S combines excellent AIS reception sensitivity, low power consumption, and modern connectivity options including NMEA 2000, NMEA 0183, and USB.
With integrated NMEA 2000, dual NMEA 0183 ports, USB connectivity, and a rugged IP68 waterproof housing, the B620S is designed to integrate easily into both modern and legacy navigation systems.
Technology Overview
The B620S utilizes CSTDMA (Carrier Sense Time Division Multiple Access) technology, the internationally recognized Class B AIS standard trusted by recreational boaters worldwide. Combined with AMEC's latest AIS platform, it delivers reliable transmission, excellent reception performance, and low power consumption for everyday cruising and coastal navigation.
Key Features
- 2W Class B CSTDMA AIS transponder
- Integrated VHF antenna splitter for sharing one antenna between AIS and VHF radio
- No Wi-Fi — ideal for wired-only installations
- Software Defined Radio (SDR) architecture
- Dual-channel AIS receiver with outstanding sensitivity
- 72-channel multi-GNSS receiver
- GPS, Galileo, BeiDou, and GLONASS support
- Optional external GPS antenna available here
- NMEA 2000 and dual NMEA 0183 connectivity
- USB-C interface for programming and diagnostics
- IP68 waterproof and dust-resistant housing
- Compact, low-power design for continuous operation
Applications
- Recreational cruising vessels
- Sailing vessels and power-conscious cruisers
- Coastal navigation
- Fishing vessels
- Single-antenna AIS/VHF installations
- Workboats and utility craft
- Fleet tracking and AIS monitoring
Top Specifications – B620S
- 2W Class B CSTDMA AIS transponder (33 dBm nominal output)
- Integrated VHF antenna splitter (single antenna for AIS and VHF)
- Low power consumption: 95 mA average / 1.5 A peak @ 12V DC
- Wide input voltage range: 9.6 – 31.2 V DC (12V / 24V systems)
- Dual AIS receivers with high sensitivity (< -111 dBm)
- Multi-constellation GNSS support: GPS, Galileo, BeiDou, GLONASS
- 72-channel GNSS receiver with approx. 2.5 m horizontal positioning accuracy
- NMEA 2000 Version 3.0, LEN=1
- Dual NMEA 0183 bi-directional ports
- USB-C interface for configuration and data output
- IP68 waterproof and dust-resistant housing
- Compact form factor: 151.22 x 128.57 x 49.87 mm
- Weight: 400 g
