Garmin Signal VHF 400

Overview
Specs
In the Box
Accessories
Compatible Devices
Overview YOUR ADVANCED COMMUNICATION SOLUTION
Stay connected and aware on the water with Garmin Signal VHF 400, the marine radio with advanced features and a color touchscreen display.
BUILT-IN CLASS B AIS SOTDMA TRANSPONDER
3.5-INCH COLOR 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 LOVEBUILT-IN AISStay 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 DESIGNThe compact and modern design features edge-to-edge glass and takes up minimal space at the helm.
CLEAR AND SIMPLE COMMUNICATIONEliminate 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 CONNECTEDQuickly 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 UPDATEConfigure 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 BREEZEInstallation 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 FEATURESADAPTIVE NOISE CANCELLATIONAdvanced noise cancellation uses machine learning algorithms to eliminate wind, wave and engine noise for our cleanest audio experience.
AUTOMATED SQUELCHRadio activity is constantly monitored to eliminate unnecessary noise and static. You also have the option for manual fine-tuning.
ADVANCED WATCH MODESAll VHF channels are continuously scanned for activity in the background, allowing you to maintain watch over channel 16 and all your favorite preset channels simultaneously.
VHF AUDIO PLAYBACKDidn’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 CONNECTIONCOMMUNICATEAIS TRANSPONDERMaintain situational awareness with the built-in Class B AIS SOTDMA transponder.
FIST MICThe included fist mic features a built-in speaker (5-watt RMS) and can be mounted in a different location to the head unit.
RUGGED DESIGNThe radio is built to withstand harsh marine environments with an IPX-7 rating.
EXTERNAL SPEAKER SUPPORTConnect a compatible external speaker for more playback options beyond the built-in speaker on the fist mic.
HAILER WITH LISTEN BACKConnect 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.
Specs GeneralUnit sizeHead Unit: 75 x 160 x 104 mm (3.0″ 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 voltage9.6 – 32 VDCWater ratingIPX7Display Typecolor IPS LCD, capacitive touchDisplay Size3.5″ (89 mm)Display resolution640 x 480 pixelsOperating temperature–20° to 55° C (–4° to 131° F)Inland waterways (ATIS)Backlight1,000 nitsMulti-language interfaceVHF FeaturesAdaptive noise cancellationAudio record and playbackAuto squelchDual/Tri watchPresets watchNOAA weather alertNOAA weather watchLoud hailerLoudhailer listen backIntercom supportAIS target displayAIS collision and MOB alarmsIntegrated AIS transponderVHF RadioRegionAll U.S., Canadian and International marine channels; NOAA weather channelsVHF frequency range Tx156.025–162.025 MHzVHF frequency range Rx156.025–163.275 MHzVHF transmit power (max)25 W, 1 W (high, low)Transmitter frequency tolerance+/0.3 kHzAdjacent channel powermore than 70 dBSpurious emissionsLess than –80 dBc (at 25 W)Sensitivity (12 dB SINAD)-118 dBm (-11 dBu/0.28 uV)Adjacent channel selectivity80 dBSpurious responsemore than 75 dBVHF intermodulationmore than 75 dBMax antenna gain6 dBiDSCClassClass DSensitivity (1% BER)-117 dBm (-10 dBu/0.32 uV)Adjacent channel selectivity80 dBSpurious responsemore than 75 dBIntermodulationmore than 75 dBAIS Transponder FeaturesRemote station supportRM 100 (x5)AISClassSOTDMA Class BLong range position reports (Msg 27)Frequency range156.025 – 162.025 MHzAIS power output5 WAIS Sensitivity (20% PER)-115 dBm (-8 dBu/0.4 uV)Adjacent channel selectivity80 dBSpurious responsemore than 75 dBIntermodulationmore than 65 dBGNSSIntegrated GNSS receiverIntegrated GNSS antennaConstellationsGPS, GLONASS, BeiDou, GalilleoDifferential supportSBAS, AIS Msg 17Navigation rate10 HzSensorsNMEA 2000 CompatibleBattery voltageAudioMax speaker output powerFist Mic: 5 W RMS, Max external speaker output power15 W RMS, Max hailer loudspeaker output power25 W RMS, Tactical FeaturesNight vision modeStealth modeElectrical FeaturesTypical current draw at 12 VdcHead Unit: 700 mA, 6 A max
Fist Mic: 90 mA, 0.9 A maxCompass-safe distanceHead Unit: 70 cm (27.6″)
Fist Mic: 40 cm (15.8″)