The Simrad RS40-B VHF Marine Radio redefines onboard communication by marrying traditional VHF clarity with modern safety tech. Designed for coastal cruisers, offshore anglers, and busy harbour traffic alike, this compact unit is built to keep you connected, seen, and in control when it matters most.

See and be seen with integrated AIS

The RS40-B features a Class B AIS transceiver that not only receives AIS targets but also transmits your vessel’s position to nearby AIS-equipped boats. That means you’ll be visible to other mariners day or night, even in low-visibility conditions. View AIS data directly on the radio’s display or have it overlaid on compatible chart or radar systems for a holistic situational picture. This is a practical edge for collision avoidance in crowded harbours and tight waterways.

DSC calls and built‑in GPS for precise, fast responses

With Class D DSC approved operation, you can initiate distress calls, make selective calls to specific vessels, or broadcast to groups with the push of a button. The built‑in GPS receiver automatically attaches your position to DSC messages, speeding rescue and coordination. When paired with NMEA 0183/2000 networks, your navigation gear can share coordinates, waypoints, and vessel data for a streamlined workflow across your electronics suite.

Flexible installation and everyday practicality

The RS40-B includes a removable fist microphone that can mount at the front or rear of the radio, with optional extension cables letting you position the mic away from the head unit to reduce clutter. For clean, versatile layouts, you can even mount the mic overhead while keeping the control head within easy reach on the dash.

Expand with wireless handsets for on‑board reach

Extend your reach with up to two HS40 wireless handsets. These remotes replicate the display and controls, letting you operate the radio from anywhere on board. It’s ideal for crew to stay connected while you move around the vessel, turning the RS40-B into a true onboard intercom system when multiple handsets are in use.

Connectivity that grows with your system

NMEA 0183 and NMEA 2000 connectivity enable seamless data sharing with other navigation gear, charts, and sensors. Add an optional loudhailer or external speaker for clear, audible announcements around the boat. To keep everything running smoothly, remember that DSC features require an MMSI number issued by local authorities, and some services may incur charges. A second VHF antenna or an AIS antenna splitter is recommended for AIS functionality alongside conventional VHF use.

Why choose the RS40-B?

• Integrated Class B AIS transceiver for active visibility on the water and safer passage in busy zones.
• Built‑in GPS adds precise location data to DSC calls and coordinates with other marine electronics.
• Removable fist mic with flexible mounting options to minimize cable clutter.
• Two optional HS40 wireless handsets turn the radio into a floating onboard intercom with full control from anywhere aboard.
• NMEA 0183/2000 compatibility for enhanced data sharing with charts, displays, and sensors.
• DSC safety features for rapid distress, calls, and vessel-to-vessel communications when conditions demand quick action.

Ideal use scenarios

• Harbour entry and departure in crowded waterways where AIS visibility reduces collision risk.
• Coastal cruising where you want to share your position with nearby vessels and receive theirs.
• Live-aboard or day boats that need flexible mic placement and remote communication for crew coordination.

Specs at a glance

• Transmit 156.025–157.425 MHz; Receive 156.050–163.275 MHz
• Channel support INT / US / CAN / EU
• Modulation FM (16KOG3E); DSC (16K0G2B)
• Channel spacing 25 kHz
• Temperature range -15 to +55 °C
• Power +13.6 V DC (nominal); low-battery detect at ~10.5 V
• Connectivity NMEA 0183/2000; optional loudhailer or external speaker

With the Simrad RS40-B, you’re not just buying a radio—you’re investing in safer, smarter communication that integrates with your entire onboard navigation system. Built on Simrad’s trusted heritage in marine electronics, this radio is ready to keep you connected, informed, and in command wherever your next voyage takes you.