Cobra MR F77W GPS Owner's Manual page 12

Mounting And
Powering The Radio
Installation And Start-Up
Warning Sticker
Warning Sticker
FCC regulations require that the Warning Sticker
supplied with this radio be applied to a spot where
it is easily seen by the radio operator. Be sure the
location is clean and dry before applying the sticker.
Power Connection Cables
Red Cable
– +
Positive (+)
Black Cable
Negative (-)
NOTE
This radio will draw up to 8 amps when transmitting at full power.
NOTICES
A reverse polarity connection will damage the radio.
When replacing the fuse in your transceiver, use only the size and type
originally provided.
18 English
Electrical Power Connection
Your CobraMarine VHF radio is powered
from +10.0V to +16.0V vessel direct
current electrical, negative ground
systems (12-volt nominal). A fused
power connection lead is provided at the
back of the transceiver.
To Connect To A Power Source:
1. Attach the black (-) wire to a negative
(-) ground.
2. Attach the fused red power (+) wire
to the positive (+) side of the power
system.
Mounting And
Powering The Radio
Installation And Start-Up
NOTE
All wiring is best kept as short as possible. If the power leads must be
extended, use a high-quality, marine-grade cable sized for up to 10 amps
of current. To minimize voltage drop, choose a wire gauge as follows:
Length Wire Gauge
Up to 1.5m(4.9ft) 1.6 mils(#14)
Up to 3.0m(9.8 ft) 2.0 mils(#12)
Up to 5.0m(16.4 ft) 2.6 mils(#10)
Up to 6.0m(19.7 ft) 3.3 mils(#8)
Nothing Comes Close to a Cobra 19
®