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em-trak B923 Class B AIS Transceiver w/VHF Splitter - 2W CSTDMA [430-0005]

Regular price $820.71 USD
Sale price $820.71 USD Regular price $911.90 USD
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B923 Class B AIS Transceiver with VHF Splitter - 2W CSTDMA

**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.

Get the most from your on-the-water experience with the B923, a 2W CSTDMA AIS Class B transceiver. Small and lightweight, it delivers em-trak's advanced AIS performance to ensure you see all information and targets, even at maximum range, and with the lowest power consumption in its class.

The B923 is equipped with an integrated VHF antenna splitter, which enables your transceiver to share your existing VHF antenna without any loss of performance. It offers quick and simple installation, with built-in intelligent connectivity, including an integrated next-generation GPS receiver and antenna and em-trak's unique FLEXI-FIT® bracket system to get you up and running in no time at all. The dual NMEA2000 & 0183, coupled with serial ports, USB, optional Wi-Fi, and Bluetooth also make connecting to all your tablets, PCs, display, and navigation devices easy and simple.

Features:

  • Certified AIS Class B – 2W CSTDMA
  • Integrated VHF antenna splitter
  • Global certification - USCG / FCC / Canada / Europe
  • SRT-AIS™ Transceiver Engine for superlative proven performance
  • FLEXI-FIT™ bracket system for easy, convenient, and secure installation
  • Internal high-performance GPS receiver and antenna (external antenna optional)
  • Water, pressure spray, and damp proof (IPx6, IPx7 certified)
  • Protected from vibration, shock, and extreme temperatures
  • Small and lightweight
  • Ultra-low power consumption – best in class
  • Guaranteed connectivity and interoperability with any chart plotter or PC
  • NMEA 0183 & NMEA 2000
  • Automated health and performance monitoring
  • Silent mode (transmit-off) function
  • Enhanced RF screening to protect against electromagnetic interference
  • Built-in power surge protection
  • Fail-safe VHF radio operation

Physical & Environmental Specifications:

  • Size (H x W x D): 150 x 115 x 45mm
  • Weight: 415kg
  • Operating temperature: -25°C to +55°C
  • Storage temperature: -25°C to +70°C
  • Ingress protection: IPx6 and IPx7

Electrical Specifications:

  • Supply voltage: 12V or 24V DC
  • Supply voltage range: 9.6V - 31.2V DC
  • Average current (at 12V): 245mA
  • Peak current: 2A
  • Average power consumption (at 12V): 2.9 W
  • Galvanic isolation: NMEA 0183 inputs only, NMEA 2000, VHF antenna port

Connectors:

  • VHF antenna: SO-239
  • VHF radio: SO-239
  • GNSS: TNC
  • Power: 12-way circular multipole
  • NMEA 2000: 5-way Micro-C connector
  • USB: USB Micro-B

Data Interfaces:

  • NMEA 0183: 2 x bi-directional ports
  • NMEA 2000: NMEA 2000 Ed 3.101, LEN=1
  • USB: PC virtual com port for NMEA 0183 data

Standards Compliance:

  • AIS standards: IEC 62287-1 Ed. 3, ITU-R M.1371.5
  • Product safety standards: EN60950-1 2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013 EN62311:2008
  • Environmental standards: IEC 60945 Ed. 4
  • Serial data interface standards: IEC 61162-1 Ed 5.0, IEC 61162-2 Ed 1.0
  • NMEA 2000: NMEA 2000 Ed 3.101
  • GNSS performance standards: IEC 61108-1 Ed 2.0, IEC 61108-02 Ed 1.0

GNSS:

  • Systems supported: GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo)
  • Channels: 72
  • Internal/external antenna: Internal or optional external antenna
  • Time to first fix from the cold start: 26s

VHF Transceiver:

  • VDL access scheme: CSTDMA
  • Operating frequency: 156.025MHz - 162.025MHz
  • Channel bandwidth: 25kHz
  • Receivers/transmitters: 2 x receivers, 1 x transmitter
  • AIS receiver sensitivity (20% PER): -111dBm
  • AIS transmitter power: 2W (+33dBm)

User Interface:

  • Indicators: Power, transmit timeout, error, silent mode

In the Box:

  • 1 x AIS transceiver
  • 1 x Power and data cable (2M)
  • 1 x FLEXI-FIT™ mounting bracket
  • Complete with screws & optional fixing tape
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Specifications:

  • AIS Class: B
  • Antenna Included: Yes
  • Display Included: No
  • Function: Receive/Transmit
  • GPS Included: Yes
  • Box Dimensions: 6"H x 7"W x 8"L WT: 2.25 lbs
  • UPC: 672975210526

Quick Guide (pdf)
Brochure (pdf)

Shipping Policy

Shipping Policy

Effective Date: July 14, 2026

At Roam & Harbor LLC ("Roam & Harbor," "we," "our," or "us"), we are committed to getting your order to you as quickly and efficiently as possible so you can spend more time enjoying your next adventure. Whether you're shopping for marine, RV, camping, or outdoor gear, we're here to make your experience as smooth as possible.

Order Processing

Orders are processed the same business day when placed before our daily order cutoff time. Orders placed after the cutoff, on weekends, or on recognized holidays will be processed on the next business day.

Once your order has been processed, you will receive a shipping confirmation email with tracking information.

Please note that processing times may be extended during holidays, promotional events, or periods of unusually high order volume.

Shipping Methods

We offer the following shipping options:

  • Standard Shipping

  • Expedited Shipping (additional fee)

  • Overnight Shipping (additional fee)

Available shipping methods and estimated delivery times will be displayed during checkout based on your shipping destination.

Shipping Rates

Shipping rates are calculated at checkout based on your order, destination, package dimensions, and the selected shipping method.

From time to time, Roam & Harbor may offer promotional shipping offers, including free shipping on qualifying orders. Any applicable promotions will be clearly communicated on our website and during checkout.

Shipping Carriers

To provide the best delivery experience, we ship through a variety of trusted carriers, including national and regional delivery partners. Carrier selection is determined based on your location, package size, and the shipping service selected at checkout.

International Shipping

Roam & Harbor proudly ships to customers around the world.

Please note that international customers are responsible for all applicable customs duties, import taxes, VAT, brokerage fees, and other charges imposed by their destination country. These fees are not included in your purchase price or shipping charges and must be paid by the recipient upon delivery, where applicable.

International delivery times may vary due to customs processing and local postal services.

Order Tracking

Once your order has shipped, you will receive an email containing your tracking number. Tracking information may take up to 24 hours to become active after your shipment has been processed by the carrier.

Shipping Delays

While we work hard to meet all estimated delivery times, shipping delays may occasionally occur due to weather conditions, carrier disruptions, customs inspections, or other circumstances beyond our control.

Roam & Harbor is not responsible for delays caused by shipping carriers or events outside of our reasonable control. We appreciate your patience and understanding should these situations arise.

Lost, Damaged, or Missing Packages

If your package appears to be lost, damaged during transit, or has not arrived within the expected delivery timeframe, please contact our Customer Support team as soon as possible.

Email: admin@roamandharbor.com

We will work with the shipping carrier to investigate the issue and assist you in resolving it as quickly as possible.

Please note that shipping damage and manufacturer defects are handled differently. If you receive a product that is defective due to a manufacturing issue rather than shipping damage, please contact our Customer Support team immediately. We will review the issue and work with you to determine the appropriate resolution in accordance with our Returns Policy and any applicable manufacturer warranty.

Incorrect Shipping Address

Customers are responsible for providing an accurate shipping address at checkout.

If you notice an error after placing your order, please contact us immediately. While we will do our best to update your order before it ships, we cannot guarantee changes once an order has entered processing or has been handed over to the carrier.

Roam & Harbor is not responsible for orders delivered to an incorrect address provided by the customer.

Questions?

If you have any questions regarding shipping, delivery, or your order status, we're happy to help.

Roam & Harbor LLC

Email: admin@roamandharbor.com

Return & Refund Policy

Returns & Refund Policy

Effective Date: July 14, 2026

At Roam & Harbor LLC ("Roam & Harbor," "we," "our," or "us"), we want you to shop with confidence. If you're not completely satisfied with your purchase, we're here to help. Please review the following policy to understand our return, refund, and exchange process.

Return Eligibility

Most items may be returned within 30 days of the delivery date.

To qualify for a return, items must:

  • Be unused, uninstalled, and in their original condition.

  • Include all original packaging, manuals, accessories, tags, and components.

  • Be free from signs of wear, misuse, modification, or damage after delivery.

Roam & Harbor reserves the right to refuse returns that do not meet these eligibility requirements.

Non-Returnable Items

The following items are not eligible for return:

  • Clearance or final sale items.

  • Gift cards.

  • Hazardous materials or products classified as hazardous for shipping.

  • Opened consumable products.

  • Any item identified as non-returnable at the time of purchase.

Return Authorization

Because Roam & Harbor works with multiple fulfillment partners and manufacturers, all returns require prior authorization.

Return instructions and the appropriate return location vary depending on the product purchased. Please contact our Customer Support team before sending any item back.

Returns sent without prior authorization or to an unauthorized address may be refused, returned to the sender, or experience delays in processing.

Return Shipping

For standard returns, customers are responsible for return shipping costs.

We recommend using a trackable shipping service and purchasing shipping insurance, as Roam & Harbor is not responsible for items lost or damaged while being returned.

Damaged, Defective, or Incorrect Items

If your order arrives:

  • Damaged during transit,

  • Defective due to a manufacturing issue, or

  • Different from the item you ordered,

please contact our Customer Support team as soon as possible.

To help us resolve your claim quickly, we may request photographs of the product, packaging, shipping label, or other relevant information.

Once your claim has been reviewed and approved, Roam & Harbor will provide a prepaid return shipping label when a return is required.

Depending on inventory availability and the nature of the issue, we may provide one of the following resolutions:

  • A replacement product (subject to availability).

  • A full refund to your original payment method.

  • Another mutually agreed-upon resolution when appropriate.

Exchanges

Exchanges are available only for products confirmed to be defective.

If a replacement product is unavailable, a full refund will be issued to your original payment method.

Inspection & Refunds

Returned merchandise may be inspected by Roam & Harbor or one of our authorized fulfillment or manufacturer partners before a refund or replacement is approved.

Once your return has been received and approved, refunds will be issued to your original payment method within 14 business days.

Please note that your financial institution may require additional time to post the refund to your account.

Original shipping charges are non-refundable unless the return results from our error or an approved defective, damaged, or incorrectly shipped item.

Refused Deliveries & Incorrect Addresses

Customers are responsible for providing an accurate shipping address at checkout.

Orders returned because of an incorrect address, refused delivery, or failure to accept delivery may be subject to the original shipping charges and any return shipping fees incurred by Roam & Harbor or our fulfillment partners.

Manufacturer Warranties

Many products sold by Roam & Harbor are covered by manufacturer warranties.

Manufacturer warranties are separate from this Returns & Refund Policy and remain subject to the individual manufacturer's terms and conditions.

If your issue occurs outside our 30-day return period but falls within a manufacturer's warranty, our Customer Support team will gladly assist you in identifying the appropriate warranty process whenever possible.

How to Start a Return

To begin a return request, please contact our Customer Support team and provide:

  • Your order number.

  • The reason for the return.

  • Photos of the product, if applicable.

Our team will review your request and provide return authorization along with the appropriate return instructions.

Email: admin@roamandharbor.com

Questions?

If you have any questions regarding returns, refunds, exchanges, or warranty assistance, we're here to help.

Roam & Harbor LLC

Email: admin@roamandharbor.com

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