What’s the difference between a chartplotter and a fishfinder?

A chartplotter shows your GPS position on electronic charts for navigation. A fishfinder uses sonar to show what’s below the boat — depth, bottom structure, and fish. Many modern units combine both, and networked systems can share data across displays.

Do I really need a VHF radio?

For safety, yes. A VHF radio is the primary way to reach other vessels and the Coast Guard, and a DSC-equipped VHF connected to GPS can transmit your position in an emergency. It’s more reliable than a cell phone offshore and is the recognized standard for marine distress calls.

What is NMEA 2000 and do I need it?

NMEA 2000 is a standard network that lets marine electronics — chartplotter, sonar, autopilot, sensors, engine data — share information over a single backbone. It’s not required for a simple setup, but it makes multi-device systems far easier to expand and integrate.

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AMEC

AMEC B620 Class B AIS Transceiver - 2W CSTDMA, NMEA2000, NMEA 0183, USB

Name: AMEC B620 Class B AIS Transceiver - 2W CSTDMA, NMEA2000, NMEA 0183, USB
Brand: AMEC
SKU: 114122
Price: 724.50 USD
Availability: InStock

Manufacturer: AMECPart #: AMEC-B620-010SKU: 114122

$724.50● In stock

Item #: 114122

Category: AIS Systems

● In stock — ships fast from US warehouses

Ships from US warehouses
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Description

B620 Class B AIS Transceiver - 2W CSTDMA, NMEA2000, NMEA 0183, USB **As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at the time of purchase.

A copy of the MMSI Registration or FCC Ship Station License is required, along with the vessel master or owner's signature on the completed programming form. ** Click here to download form.

The B620 is the basic model of AMEC’s latest 2W AIS class B transponder. It is compact, durable, easy to install and operate, with superior performance of sending and receiving AIS messages to keep you alerted and in control on the water.

Features: Fully approved for global deployment (CE, FCC, ISED) AMEC's 3rd-gen AIS engine unleashes unparalleled performance, power efficiency, and reliability Constant self-health test with intuitive LED indicators Cutting-Edge Software Defined Radio technology and a high-performance dual-channel receiver ensure maximum AIS message processing and reception Certified EMI protection to prevent interference from onboard electronics Advanced 72-channel high-speed GNSS receiver supporting GPS, Galileo, Beidou, or GLONASS Compact and lightweight for easy installation with versatile NMEA 2000, NMEA 0183, and USB connection interface IP68 waterproof standards Powered by AMEC's 3rd-gen AIS engine, the B620 series unleashes superlative AIS performance, best-in-class receiving sensitivity of -111dBm and world’s lowest power consumption. B620 incorporates NMEA 2000 to enable quick installation and interoperability with other bridge systems.

Its dual NMEA 0183 ensures easy integration with legacy board devices. PC/Mac based navigation program can be connected to B620 through its USB port.

Robust from electrical to mechanical design, built to endure for years to come.

Specifications

Brand	AMEC
Part Number	AMEC-B620-010
EverTide SKU	114122
UPC	4713095730566

Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.

Complete your setup

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Returns & warranty

Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.

AMEC productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.

Marine Navigation & Instruments — frequently asked

What’s the difference between a chartplotter and a fishfinder?: A chartplotter shows your GPS position on electronic charts for navigation. A fishfinder uses sonar to show what’s below the boat — depth, bottom structure, and fish. Many modern units combine both, and networked systems can share data across displays.
Do I really need a VHF radio?: For safety, yes. A VHF radio is the primary way to reach other vessels and the Coast Guard, and a DSC-equipped VHF connected to GPS can transmit your position in an emergency. It’s more reliable than a cell phone offshore and is the recognized standard for marine distress calls.
What is NMEA 2000 and do I need it?: NMEA 2000 is a standard network that lets marine electronics — chartplotter, sonar, autopilot, sensors, engine data — share information over a single backbone. It’s not required for a simple setup, but it makes multi-device systems far easier to expand and integrate.

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