Signal™ VHF 400 - VHF fix cu transponder AIS

The Garmin VHF 400 Signal™ is a fixed marine VHF radio designed for communication and situational awareness. Its main features include:

An integrated SOTDMA Class B AIS transponder.A 3.5-inch edge-to-edge color touchscreen.DSC Class D capabilities, automatic squelch, VHF audio replay, and advanced watch functions.A noise-canceling adaptive microphone and a 5 W RMS integrated speaker.An integrated GPS, along with NMEA 2000, Garmin BlueNet, Wi-Fi, and ActiveCaptain connectivity options.

Yes, the Garmin Signal™ VHF 400 features a 3.5-inch color touchscreen with edge-to-edge glass, optimized for helm space. This screen allows you to select options and scroll through menus.

The Garmin Signal™ VHF 400 integrates an AIS SOTDMA Class B transponder. This system enables transmission and reception of AIS data for improved situational awareness.

Yes, the Garmin Signal™ VHF 400 is equipped with an internal GPS antenna. It requires GPS position data to transmit position reports. If the mounting location does not provide good GPS reception, an external GPS antenna (not included) can be connected to the GPS port.

Yes, the Garmin Signal™ VHF 400 handheld microphone has several functions:

A 16/C button to switch between the current VHF channel and channel 16. A button to toggle between low power (1 W) and high power (25 W) (not available on some VHF channels). Buttons to change the current VHF channel. A Push-to-Talk (PTT) button to transmit on the current VHF channel. Volume buttons (+ and -) to increase or decrease the handset speaker volume. It also includes adaptive noise reduction.

Yes, the Garmin Signal™ VHF 400 offers a VHF audio playback function that allows you to replay recent VHF activity.

You can change the VHF transmit power (between 1 W and 25 W) directly from the hand microphone by pressing the dedicated button. This function is not available on all VHF channels.

The Garmin Signal™ VHF 400 offers several advanced watch modes:

Scan all channels: To monitor all available channels.Listening to multiple channels simultaneously: To listen to several channels at once.Simultaneous monitoring of channel 16 and the current channel: To avoid missing any important communications.

When choosing the mounting location for the Garmin Signal™ VHF 400, consider the following points:

The device must not be exposed to extreme temperatures or conditions.Determine whether an external GPS antenna will be connected or the internal GPS antenna will be used.Respect the compass safe distance to avoid interference.Mount the microphone within easy reach of the device.The location must not be covered by metal objects or surfaces that could interfere with the microphone’s wireless connection.Provide at least one installed station to allow radio use while operating the boat.Connect the device and microphone to the same circuit, if possible.Allow approximately 185 mm (7 1/4 in) of space behind the mounting surface for cables and connectors.If the mounting is flush, the surface must be strong enough to support the device’s weight and protect it from vibrations.If the device is installed in a water-exposed location, it must be mounted at less than 45 degrees from the horizontal plane, and a drip loop must be added to the cables.

The Garmin VHF 400 VHF radio is equipped with an internal GPS antenna. An external GPS antenna (not included) is only required if the mounting location does not provide adequate GPS reception. The radio cannot transmit position reports based on position data from a network source, such as a device connected to an NMEA 2000 network.

To transmit and receive signals, you must connect an external VHF antenna (not included) to the ANTENNA port of the Garmin Signal™ VHF 400. It is recommended to use a VHF antenna well matched at the AIS end of the band (VSWR 2:1 or less at 162 MHz).

Garmin states a maximum permissible exposure (MPE) of 2 meters (6.6 feet) for this system, determined with a 25 W output power to a 6 dBi omnidirectional antenna. The antenna must be installed to maintain a 2-meter distance between the antenna and all persons. If the antenna is mounted 2.5 meters (8.2 feet) above the deck, this distance can be reduced to 0.5 meters (1.7 feet).

Yes, the mounting location requires approximately 185 mm (7 1/4 in) of space behind the mounting surface. This minimizes strain on the cables and connectors at the rear of the unit.

Yes, the Garmin Signal™ VHF 400 uses Garmin BlueNet™ network technology and is compatible with Garmin BlueNet™ devices and Garmin Marine Network. For optimal performance and future updates, it is recommended to connect the main unit and remote stations to the Garmin BlueNet™ side of the network if your boat is equipped with a Garmin BlueNet™ chartplotter. If your boat is equipped only with Garmin Marine Network devices, a Garmin Marine Network adapter cable (part number 010-12531-01) is required.

Yes, you can install the Garmin Signal™ VHF 400 in an existing cutout for a Garmin VHF 210/215 radio using a retrofit kit (sold separately). This kit is also compatible with other cutout sizes. In some cases, such as replacing a Garmin VHF 110/115, you may need to enlarge the existing cutout using the retrofit kit’s template.

Yes, when the Garmin Signal™ VHF 400 is connected to your marine network via Garmin BlueNet™, you can control it fully from the main unit or from up to five remote Garmin Signal™ RM 100 stations connected to the same network.

The warranty for the Garmin Signal™ VHF 400 may be voided or may not cover certain damages in the following situations:

Repairs or modifications not authorized by Garmin performed on the equipment. Damage caused by extreme temperatures (exceeding the specified storage or operating temperature range). Failure to follow precautions when connecting audio equipment, which may result in permanent damage to the audio system.

Yes, it is possible to install the Garmin Signal™ VHF 400 radio in an existing mounting location, particularly one designed for a Garmin VHF 210/215, using a retrofit kit (sold separately).

If the opening is smaller than 138 mm x 62 mm, it is compatible. You will need to use the included mounting template to enlarge the opening.If the opening is between 138 mm x 62 mm and 157.20 mm x 66.50 mm, it is compatible. You will need to use the Garmin Signal VHF retrofit kit (sold separately) and its template to enlarge the opening.If the opening is between 157.20 mm x 66.50 mm and 178 mm x 82 mm, it is compatible. You will need to use the Garmin Signal VHF retrofit kit (sold separately), but you will not need to modify the existing opening.If the opening is larger than 178 mm x 82 mm, it is not compatible with the supplied equipment or the retrofit kit.The retrofit kit can be purchased from your Garmin dealer.

The Garmin Signal™ 400 VHF offers multiple connection options to integrate with your marine system:

Garmin BlueNet™ Network: You can connect the radio directly to a compatible Garmin BlueNet chartplotter or to a Garmin BlueNet 20 switch using Garmin BlueNet cables. This allows you to control the radio from the main unit or up to five Garmin Signal RM 100 remote stations connected to the same network.
Garmin Marine Network: If your boat is equipped only with Garmin Marine Network devices, you will need to use a Garmin Marine Network adapter cable (reference 010-12531-01) to connect the radio and each remote station to your network.
Hybrid Network (BlueNet and Marine Network): It is important to connect all Garmin Signal VHF devices (main unit and remote stations) on the same side of the network (either BlueNet or Garmin Marine Network) to ensure communication.
NMEA 2000® Network: The radio can be connected to your NMEA 2000 network via the NMEA port to exchange data with other marine devices. It shares your GPS position, DSC distress and position information from other vessels, as well as received AIS data. Note that the radio is not powered by the NMEA 2000 network.
Wi-Fi: The radio features Wi-Fi connectivity to connect to the ActiveCaptain® app on your mobile device, enabling programming and software updates.

Before you can program the radio, it must have a fixed GPS position. The procedure varies depending on your location:

In the United States: FCC regulations prohibit entering incorrect or inappropriate data. You must submit your MMSI number and vessel details to your Garmin dealer. The radio will be programmed automatically when you connect it to the ActiveCaptain® app.Outside the United States: You can program the radio via the ActiveCaptain app or manually:Via the ActiveCaptain app: Connect the radio to the app on your mobile device. In the app, select Settings, then VHF Radio Signal under Connected Devices. Enter your MMSI number, ATIS number (if applicable), and all required vessel details, then select Save.Manually: On the radio, select the main menu icon (>), then Settings > Vessel Details. Enter your MMSI, vessel name, call sign, vessel type, and dimensions, then select Program.Note: Once you have programmed the radio with an MMSI and vessel details, you cannot easily change them. If the radio is moved to a new vessel, it must be reprogrammed before it can be legally used on the new vessel.