Antenna Connections; Antenna Mouting Suggestions - Raymarine Ray 53 User Manual

10 amp.in-line fuse located in the RED(+) wire will open. Check the input
power leads for correct polarity with a VOM(volt/ohm meter),reconnect the
leads observing correct polarity,and replace the fuse. Use the same rate and
type fuse.
-The RAY53 accepts NMEA 0183 data from a GPS or Loran navigator to provide
Lat/Lon position information that is transmit during DSC Distress Call mode. The
NMEA sentences that could provide positional data,by order of priority are:
GGA.RMC,RMA,and GLL.
5.2

Antenna Connections

The coaxial cable to your VHF antenna is intended to be connected to the antenna jack
on the rear panel using a PL259 VHF type connector. The antenna cable may be cut to
the required length at installation. If a longer cable length is required, RG-58 50 ohm
coaxial cable or equivalent cable may be used for runs up to a maximum of 50 feet. If the
distance required is even greater,then we recommend using low loss RG-213 or
equivalent cable for the entire run in order to avoid excessive losses in power output.
If the antenna RF connector is likely to be exposed to the marine environment, a
protective coating of grease(similar to Dow Corning DC-4) can be applied to the
connetor before connecting it to the radio. Any other extensions or adapters in the cable
run should also be protected by silicon grease and then wrapped with a waterproofing
tape.
5.3

Antenna Mouting Suggestions

The best radio in the world is useless without a good antenna location. Mounting the VHF
antenna properly is very important because it will directly affect the performance of your
VHF radio. A standard VHF antenna which is designed to use aboard boats should be
used.
-. Since VHF transmission are essentially Line-of-Sight,mount the antenna at the
highest possible location on the vessel and free of obstruction in order to