Cobra Electronics MR HH300 EU - Manual (Page 19)

Maintenance and
Troubleshooting
Nothing comes close to a Cobra ® 35
Advanced Operation
34 English
Channel Scan
During Channel Scan, 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 ten
seconds to allow you to listen briefly on that channel. It will
then continue to scan unless you switch out of the Scan mode.
NOTE
The radio must be squelched for the channel scan
to function. See page 27 for squelch procedure.
To enter channel scan:
1. From 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.
To exit channel scan:
1. From Scan mode, press the Dual-Watch/Scan
button. This will return the radio to Standby mode
on the last scanned channel.
During channel scan (while receiving an incoming
transmission), you can choose from the following:
a. Press the Talk button to remain on that channel
and end scanning. This will return the radio to
Standby mode.
b. Press the Channel Up or Channel Down button
to resume scanning channels.
If you do not press any buttons within ten seconds,
your radio will automatically resume scanning channels.
During channel scan (while not receiving a
transmission), you can choose from the following:
a. Press the Talk button to communicate on the last
memory location scanned and return to Standby mode.
b. Press the Channel Up or Channel Down button to
change scan direction.
Operating Your Radio Operating Your Radio
Dual-Watch/Scan Button
88 30
60 75
Scanning
Scan Icon
a
Talk or Channel Up/Down
b
Maintenance
•
Very little maintenance is required to keep your CobraMarine ™
VHF radio in good operating condition.
■ Keep the radio and charger 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 build-up 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 so if you are using alkaline batteries.
No display on LCD when
radio is turned On Batteries are exhausted
Batteries not installed
properly
Recharge or replace batteries
Remove batteries and reinstall
according to polarity markings
NiMH batteries run
down quickly Batteries are at the
end of their life Replace with new batteries
Will transmit at
1 watt, but not
at 5 watts Batteries are low
Selected channel is
limited to 1 watt
Recharge or replace batteries
Switch to another channel
Will not transmit Selected channel is
limited to receive only Switch to
another channel
No sound from speaker Volume level is too low or
squelch level is too deep Re-adjust volume
and squelch
No response to
button press Key lock is On Press Backlight/
Key Lock button
No answer to calls Out of range of
other station
Signal is blocked
by terrain
Switch to 5 watts or
move closer
Move until you have a “line-of-
sight” to the other station
Problem Possible Cause(s) Solution(s)
Troubleshooting
•
300-BR-F 6/23/04 1:56 PM Page 34