POLMAR DB-50M, User Manual

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Shortcut operations
◊ Squelch level Setup
This function is used to setup the strength of receiving signal,
when the strength reach a certain
level, the calling can be heard,
otherwise, the transceiver will keep
mute. In standby, press and hold
[SQL]
key, meanwhile switch
the selector knob to adjust the squelch level of Main band.
1-20: Total 20 squelch levels available.
OFF: turn off squelch. The background noise always on.
The squelch level shall setup separately for right band and left
band.
NOTE
◊ Transmit DTMF signaling
If the current channel is with DTMF signaling, hold PTT and [UP]
key will transmit selected Pre-programmed signaling.
◊ High/Mid/Low Power Switch
In standby, repeat press key to choose power levels as
following.
• When LCD displays HIGH, the power for current channel is high.
• When LCD displays MID1, the power for current channel is middle 1.
• When LCD displays MID2, the power for current channel is middle 2.
• When LCD displays LOW, the power for current channel is low.
Output power for each level.
HIGH MID1 MID2 LOW
VHF (50W) VHF (25W) VHF (10W) VHF (5W)
UHF (40W) UHF (25W) UHF (10W) UHF (5W)
In channel mode, this operation is for temporary use only.
NOTE
◊ Frequency Reverse
In standby, hold key for over 0.5 second to turn On/Off
frequency reverse function. When reverse function is on, the TX
frequency will change to RX frequency and RX frequency change
to TX frequency.
The signaling will also be reversed if CTCSS/DCS signaling
existed in this channel.
◊ Band-width Selection
This transceiver has 3 band widths, select suitable band width in
accordance with different local conditions.
In standby, hold key for over 0.5 second to choose the 3 band
widths. When LCD displays WIDE, current channel is working on
wide band 25 KHz. When LCD displays MIDDLE, current channel is
working on middle band 20 KHz*(not in Italy). When LCD displays
NARROW, current channel is working on narrow band 12.5 KHz.
◊ HOME Channel
In standby, press key to switch to
HOME channel, and communicate on
HOME channel. Repeat pressing it to
return to last channel.
◊ Hyper memory channel
In standby, press the left or right volume knob will switch the
radio work on hyper channel 1 or hyper channel 2.
16
This function is valid only when current channel setup with offset
frequency and offset direction.
NOTE