Signal VHF 400 Marine VHF Radio with Built-In AIS TransponderBUILT-IN AISStay aware of 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.ADAPTIVE 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.GENERAL SPECIFICATIONSUnit size: Head 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"); Operating voltage: 9.6 - 32 VDC; Water rating: IPX7; Display Type: 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) ; Backlight: 1,000 nits; VHF RADIO SPECIFICATIONS Region: All U.S., Canadian, and International marine channels; NOAA weather channels; VHF frequency range Tx: 156.025162.025 MHz; VHF frequency range Rx: 156.025163.275 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; Remote Station Support: RM 100 (x5); DSCClass: 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; AISClass: SOTDMA Class B; Long-range position reports (Msg 27) ; 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; IN THE BOXGarmin Signal VHF 400 head unit; Fist mic; Sun cover; Head unit power and external audio cable with fuse (2 m); Fist mic power cable with fuse (2 m); Drop cable for NMEA 2000 network (2 m); Mounting hardware; Mounting template; Documentation; - cis2:mm5mnJlm -Specifications: AIS: Yes; Built-In GPS: Yes; Hailer: Yes; Intercom Capability: Yes; NMEA 2000: Yes;