Description

YOUR ADVANCED COMMUNICATION SOLUTION

Stay connected and aware on the water with Garmin Signal VHF 400, the marine radio with advanced features and a colour touchscreen display.


BUILT-IN CLASS B AIS SOTDMA TRANSPONDER	3.5″ COLOUR TOUCHSCREEN DISPLAY	CRYSTAL-CLEAR COMMUNICATION WITH ADAPTIVE NOISE CANCELLATION	INTUITIVE CLASS D DIGITAL SELECTIVE CALLING (DSC)	INCLUDES FIST MIC WITH BUILT-IN SPEAKER	COMPACT DESIGN TAKES UP MINIMAL SPACE AT THE HELM

WHAT YOU’LL LOVE


BUILT‑IN AIS Stay aware on the water with built-in AIS transmit and receive capabilities. This feature shows you range, course, speed and the crossing situation of other AIS-equipped vessels around you to help you navigate.	SLEEK DESIGN The compact and modern design features edge-to-edge glass and takes up minimal space at the helm.	CLEAR AND SIMPLE COMMUNICATION Eliminate unnecessary radio noise with automated squelch. If you miss a radio message, you can replay it with VHF audio playback. When you need to maintain watch on multiple channels, advanced watch modes make it easy.

STAY CONNECTED Quickly transmit a distress signal to nearby vessels with the distress button, which uses Class D DSC to automatically send crucial information that can help emergency responders. You can also use the intuitive DSC features to quickly initiate contact with other AIS-equipped vessels – simply select the vessel on the AIS plotter view, and call them with a tap of a button.	EASY TO UPDATE Configure the radio, program the MMSI number, and get over-the-air software updates with the ActiveCaptain^® smartphone app via built-in Wi‑Fi^® connectivity.	INSTALLATION IS A BREEZE Installation is simple since VHF/DSC/AIS features only require a single VHF antenna and the GPS antenna/receiver is built into the unit. Chartplotter integration is seamless via the NMEA 2000^® network and Garmin BlueNet™ Network.

ADVANCED SOFTWARE FEATURES

ADAPTIVE NOISE CANCELLATION

Advanced noise cancellation uses machine learning algorithms to eliminate wind, wave and engine noise for our cleanest audio experience.

AUTOMATED SQUELCH

Radio activity is constantly monitored to eliminate unnecessary noise and static. You also have the option for manual fine-tuning.

ADVANCED WATCH MODES

All VHF channels are continuously scanned for activity in the background, allowing you to maintain watch over channel 16 and all your favourite preset channels simultaneously.

VHF AUDIO PLAYBACK

Didn’t catch that message? Replay it with VHF audio playback, and listen to audio messages for up to 3 minutes on any channel.

YOUR OFFSHORE CONNECTION

COMMUNICATE

AIS TRANSPONDER

Maintain situational awareness with the built-in Class B AIS SOTDMA transponder.

FIST MIC

The included fist mic features a built-in speaker (5-watt RMS) and can be mounted in a different location to the head unit.

RUGGED DESIGN

The radio is built to withstand harsh marine environments with an IPX7 rating.

EXTERNAL SPEAKER SUPPORT

Connect a compatible external speaker for more playback options beyond the built-in speaker on the fist mic.

HAILER WITH LISTEN BACK

Connect the radio to a compatible loudhailer for broadcasting announcements. The listen back feature gathers background sounds that can be heard through the fist mic or external speaker.

Specifications

General
Unit size	Head Unit: 75 x 160 x 104 mm (3″ x 6.3″ x 4.1″) Fist Mic: 100 x 60 x 31 mm (3.9″ x 2.4″ x 1.2″)
Weight	Head Unit: 655 g (1.45 lbs) Fist Mic: 245 g (0.54 lbs)
Operating voltage	9.6 – 32 VDC
Water rating	IPX7
Display Type	Colour IPS LCD, capacitive touch
Display Size	3.5″ (89 mm)
Display Resolution	640 x 480 pixels
Operating temperature	–20° to 55° C (–4° to 131° F)
Inland waterways (ATIS)	Yes
Backlight	1,000 nits
Multi-language interface	yes

VHF Features
Adaptive noise cancellation	Yes
Audio record and playback	Yes
Auto squelch	Yes
Dual/Tri watch	Yes
Presets watch	Yes
NOAA weather alert	Yes
NOAA weather watch	Yes
Loud hailer	Yes
Loud Hailer listen-back	Yes
Intercom support	Yes
AIS target display	Yes
AIS collision and MOB alarms	Yes
Integrated AIS transponder	Yes

VHF Radio
Region	All U.S., Canadian and International marine channels; NOAA weather channels
VHF frequency range Tx	156.025–162.025 MHz
VHF frequency range Rx	156.025–163.275 MHz
VHF transmit power (max)	25 W, 1 W (high, low)
Transmitter frequency tolerance	+/0.3 kHz
Adjacent channel power	More than 70 dB
Spurious emissions	Less than –80 dBc (at 25 W)
Sensitivity (12 dB SINAD)	-118 dBm (-11 dBu/0.28 uV)
Adjacent channel selectivity	80 dB
Spurious response	More than 75 dB
VHF intermodulation	More than 75 dB
Max antenna gain	6 dBi

Class D DSC
Class	Class D
Sensitivity (1% BER)	-117 dBm (-10 dBu/0.32 uV)
Adjacent channel selectivity	80 dB
Spurious response	More than 75 dB
Intermodulation	More than 75 dB

AIS Transponder Features
Remote station support	RM 100 (x5)

AIS
Class	SOTDMA Class B
Long range position reports (Msg 27)	Yes
Frequency range	156.025–162.025 MHz
AIS power output	5 W
AIS Sensitivity (20% PER)	-115 dBm (-8 dBu/0.4 uV)
Adjacent channel selectivity	80 dB
Spurious response	More than 75 dB
Intermodulation	More than 65 dB

GNSS
Integrated GNSS receiver	Yes
Integrated GNSS antenna	Yes
Constellations	GPS, GLONASS, BeiDou, Galilleo
Differential support	SBAS, AIS Msg 17
Navigation rate	10 Hz

Sensors
NMEA 2000® compatible	Yes
Battery voltage	Yes

Audio
Max speaker output power{}	Fist Mic: 5 W RMS, < 1% THD
Max external speaker output power	15 W RMS, < 1% THD, 4 Ω
Max hailer loudspeaker output power	25 W RMS, < 1% THD, 4 Ω

Tactical features
Night vision mode	Yes
Stealth mode	Yes

Electrical features
Typical current draw at 12 Vdc	Head Unit: 700 mA, 6 A max Fist Mic: 90 mA, 0.9 A max
Compass safe distance	Head Unit: 70 cm (27.6″) Fist Mic: 15.8 cm (40″)

Networking & Connections
Garmin BlueNet™ Network	GMN 1.0/2.0
Wireless Connectivity	Access point for mobile phones, 802.11b/g/n, integrated antenna
Wireless security	WPA2 Personal
External GNSS antenna connector	SMA
ANT connector	SO-239 (50 Ω)