POLMAR DB-50M, User Manual

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◊ Dual Watch
In standby, hold key for over 0.5 second to enter Dual Watch
mode. The radio will scan the channel in every 5 seconds. When the
radio receives matching signal, it pause scanning until the signaling
disappear. Repeat above operation to exit Dual watch.
◊ Emergency Alarm
To start emergency alarm, hold the right volume knob until the
transceiver displays ALARM and emit alarm. Re-power on the
transceiver to exit alarm. This transceiver has 4 kind of alarm which
can be setup by programming software.
◊ Channel/Frequency Scan
Frequency Scan
In VFO mode, this function is designed to monitor signal of every
communicative frequency point of “step size” you have set.
1. In VFO mode, press the Main Band key to enter channel
scan.
2. During the scanning adjust the Main band selector knob or
press microphone [ UP/DOWN ] key will change the scan
direction.
3. Press key to exit scan.
Channel Scan
1. In channel mode, press the Main Band key to enter channel
scan.
2. During the scanning, adjust the Main band selector knob
or press microphone [UP/DOWN] key will change the scan
direction.
3. Press key to exit scan.
◊ Channel Scan Skip
In channel mode, switch selector
knob to choose the channel, then hold
for over 0.5 second, the radio prompts “DU DU”, and LCD
displays “SKIP”, and now the current channel is Scan Skip.
◊ Channel Edit
1. In VFO mode, turn selector knob to select the desired
frequency or input frequency by
MIC’s numeric keys.
2. Hold key until the transceiver
prompt DU and the display of
channel number flashes.
3. Turn selector knob to select the channel number to store. (If
the storage has data , the LCD will
display the frequency, otherwise
will display”----------”)
4. Press key, the LCD display
MEN- IN, the channel edit completed.
◊ Scan range Limit
You can set the VFO scan frequency range by this function:
1. Choose upper limit and lower limit frequency, there are L1/U1-
L5/U5, five couple of limit frequency for selection. L stands
for lower limit and U stands for the upper limit. The upper
limit must over the lower limit frequency. Please refer to the
Channel Edit to setup the limit
frequency.
2. In VFO mode, set the VFO
frequency in the range between
upper and lower limit.
3. Press key to start scan in limited
range.
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