20
Ray49 Marine VHF Radio
Power
The red and black Power Cord provides connection to DC power. Slide the bullet
connectors on the cord into their mates (with the same colored wire) on the rear
of the radio. Connect the stripped wires on the Power Cord to the nearest primary
source of the boat's DC power. A suitable source would be a circuit breaker on the
power panel or a fuse block near the unit, rated at 10 amps. Connect the red wire
to the positive terminal of the power source and the black wire to the negative
(ground) of the power source. The red (+) wire contains an in-line fuse rated at
10A, 250V, slow-blow. If the fuse ever needs to be replaced, be sure to use the
same type and rating.
The power cord must be long enough to reach the DC power source. If additional
wire length is required, the cable can be extended by adding more cable as
necessary. However, for power cable runs longer than 15 feet, larger wire
diameter size should be used to prevent voltage line loss. To ensure adequate
current draw to the equipment, Raymarine recommends that you use lugs to
connect the power cable to the DC supply and that the lug connections be both
crimped and soldered.
The Ray49 is designed to be operated on a 12 volt (nominal) system. If battery
voltage drops below 10.5 VDC,
BATTERY LOW appears on the LCD. Discon-
tinue using the radio if a low voltage condition occurs as performance would be
unreliable. If voltage increases to 15.8 VDC,
BATTERY HIGH appears.
External Speaker
Connect the ) wire and green (–) wire to the speaker observing polarity
as it is marked on the speaker.
NMEA Data
The Ray49 accepts NMEA 0183 (V3.01) data from a position determining device
(GPS) to provide the Latitude and Longitude position information. This
information appears on the radio’s LCD display and is also transmitted during a
DSC Distress Call. When a valid NMEA signal is detected, the “GPS” indicator
appears on the LCD. When no NMEA signal is detected, the indicator shows “NO
GPS”.
Connect the NMEA OUT + and NMEA OUT – signals from the positioning device
to the NMEA IN + (gray) and NMEA IN – (purple) wires, respectively, from the
radio. An example of how to make the connections using a suitable connector
block is shown in the following drawing. For specific instructions how to connect
your particular GPS, please refer to the handbook that came with that device.
