Maintenance; Troubleshooting - Cobra Marine MR HH125 Owner's Manual

Advanced Operation
VHF Marine Radio Protocols Operating Your Radio
Channel Scan Mode
Scanning
During Channel Scan mode, the radio will rapidly switch
from channel to channel through ALL the channels.
Whenever any activity is detected, the radio will stop the
scan for 10 seconds to allow you to listen briefly on that
channel. The radio will then continue to scan unless you
switch out of the Channel Scan mode.
To Enter Channel Scan:
SCAN Button
1. From Marine Standby mode, press and hold the
DUAL WATCH/SCAN button. The radio will immediately
begin to scan the entire channel map selected in
the active channel map. The SCAN icon will show
on the LCD.
2. A signal on any channel will stop the scan for
10 seconds to allow you to listen to the traffic
on that location.
SCAN Icon
3. Press the Channel Up or Channel Down button
to resume scanning the Channel Scan channels
or to change the scan direction.
4. To EXIT Channel Scan mode, press and hold the
DUAL WATCH/SCAN button again. The SCAN icon
will disappear from the LCD and the radio will
return to Marine Standby mode.
Channel Up/Down Buttons
26 English
Maintenance and

Troubleshooting

Operating Your Radio VHF Marine Radio Protocols

Maintenance

Very little maintenance is required to keep your CobraMarine VHF radio
in good operating condition:
■ Keep the radio clean by wiping with a soft cloth and mild detergent. Do not use
solvents or harsh or abrasive cleaners, which could damage the case or scratch
the LCD screen.
■ If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a day to
prevent buildup of salt deposits, which could interfere with button operation.
■
If the radio will be stored for a long period, such as over the winter,
remove the batteries from the battery tray and store them in a separate
package. This is especially important if you are using alkaline batteries.
Troubleshooting
Problem Possible Cause(s)
No display on LCD when Batteries are exhausted
radio is turned On
Batteries not installed
properly
NiMH batteries run Batteries are at the
down quickly end of their life
Will transmit at Batteries are low
one (1) watt, but not
at three (3) watts
Selected channel is
limited to one (1) watt
Will not transmit Selected channel is
limited to receive only
No sound from speaker Volume level is too low
No response to Button lock is On
button press
No answer to calls Out of range of
other station
Signal is blocked
by terrain
•
•
Solution(s)
Recharge or
replace batteries
Remove batteries and
reinstall according to
polarity markings
Replace with new
batteries
Recharge or
replace batteries
Switch to
another channel
Switch to
another channel
Re-adjust volume
Press Backlight/
Key Lock button
Switch to three (3) watts
or move closer
Move until you have a "line-
of-sight" to the other station
Nothing Comes Close to a Cobra ® 27