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To connect the VHF 300 series radio to your existing NMEA 2000 network: 1. Determine where you would like to connect the radio to your existing NMEA 2000 backbone. 2. Disconnect one side of a NMEA 2000 T-connector from the backbone at an appropriate location. If you need to extend the NMEA 2000 backbone, connect an appropriate NMEA 2000 backbone extension cable to the side of the T.connector you disconnected. 3. Add a T.connector (not included) for the radio to the NMEA 2000 backbone by connecting it to the side of the T.connector you disconnected. 4. Route a NMEA 2000 drop cable (not included) to the bottom of the T.connector added in step 3 to your NMEA 2000 network. Use a drop cable with a length up to 20 ft. (6 m). 5. Connect the drop cable to the T.connector and the NMEA 2000 port on the VHF 300 Series transceiver box. Notice: If you have an existing NMEA 2000 network on your boat, it should already be connected to power. Do not connect an additional NMEA 2000 power cable to an existing NMEA 2000 network, because only one power source should be connected to a NMEA 2000 network. . VHF 300 series transceiver box . NMEA 2000 device (not included) . Drop cable (not included) . T-connector (not included) . Existing NMEA 2000 network . Ignition or in-line switch . Fuse . 12 Vdc battery . NMEA 2000 power cable (not included) . Terminator (not included) Creating a Basic NMEA 2000 Network + - . . . . . . . . . . . . . . . . Connecting the VHF 300 Series Radio to an Existing NMEA 2000 Network VHF 300 Series Installation Instructions To create a basic NMEA 2000 network: 1. Connect two T-connectors (not included) together by their sides. 2. Connect a NMEA 2000 power cable (not included) to one of the T-connectors. notice: A NMEA 2000 power cable must be connected to a 12 Vdc power source through a switch. The NMEA 2000 network may drain your battery if it is connected directly. Connect the cable to the ignition switch of the boat if possible, or through an appropriate additional switch. 3. Connect a NMEA 2000 drop cable (not included) to the other T-connector and to the NMEA 2000 port on the VHF 300 Series transceiver box. 4. Add additional T-connectors for each device you add to the NMEA 2000 network, and connect each device to a T-connector with a drop cable. 5. Connect terminators (not included) to each end of the combined T-connectors. Connecting the VHF 300 Series to a NMEA 0183 Device The following diagram illustrates the NMEA 0183 wiring used to connect your VHF 300 series radio to a GPS chartplotter. Connect NMEA 0183 bare wires as indicated in the following illustration. Use 22 AWG wire for extended runs of wire, if needed. + - > > > > > > > > NMEA 0183- compatible chartplotter VHF 300 transceiver box Battery 12 Vdc White—Rx A (+) Orange/White—Rx B (-) Gray—Tx A (+) Pink—Tx B (-) Red—power (+) Black—ground (-) Tx A (+) Tx B (-) Rx A (+) Rx B (-) Power + Ground - Wire Color and Function Wire Function Fuse 10A Connecting a VHF 300 Series Radio to a NMEA 0183 Device Notice: Cover the connections with a waterproof, adhesive tape, such as rubber vulcanizing tape, to prevent water from seeping into the radio. Connecting the VHF 300 Series Radio to a Hailer Horn (Optional) 1. Follow the mounting instructions provided by the manufacturer of your hailer horn if it is not already mounted. 2. Consult the manufacturer of your hailer horn to identify the positive and negative wires or terminals. 3. Use the VHF 300 Series Hailer-Horn Wiring Assignment Table to identify the positive and negative wires. 4. Wire the correct positive and negative wires from the VHF 300 power/data cable to the passive speaker. 5. Use 22 AWG wire for extended runs of wire, if needed. Notice: Cover the connections with a waterproof, adhesive tape, such as rubber vulcanizing tape, to prevent water from seeping into the radio. Cable Wire Color Function VHF 300 power/ data cable Yellow Hailer-horn positive (+) Green Hailer-horn negative (-) VHF 300 Series Hailer-Horn Wiring-Assignment Table Appendix Specifications Transceiver Box Dimensions: W . H . D: 9 3/4 . 7 3/32 . 2 1/2 in. (248 . 180 . 64 mm) Weight: 4.177 lb. (1.895 kg) temperature Range: from 14.F to 122.F (from -10.C to 50.C) Compass-safe Distance: 20 in. (.5 m) Waterproof Rating: IEC 60529 IPX7 (Immersion in 1 meter of standing water for 30 minutes) operating Voltage: 10.8–15.6 Vdc (12 Vdc boat battery) Current Drain: 2 A max–6 A max (low power–high power transmit) Antenna Connector: S0-239 (50 .) Max Antenna Gain: 9 dBi Antenna Port Impedance: 50 . GHS 10 Dimensions: W . H . D: 6 11/32 . 2 13/16 . 1 11/16 in. (161 . 71.6 . 42.8 mm) Weight: 12.98 oz. (368 g) temperature Range: from 14.F to 122.F (from -10.C to 50.C) Compass-safe Distance: 20 in. (.5 m) Waterproof Rating: IEC 60529 IPX7 (Immersion in 1 meter of standing water for 30 minutes) Active Speaker Dimensions: W . H . D: 4 5/16 . 4 3/8 . 2 1/2 in. (109.7 . 111.4 . 63.5 mm) Weight: 16.37 oz. (464 g) temperature Range: from 14.F t...

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