Velleman ALN006 User Manual Page 12

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9
English
5 Basic features
5.1 Switching the device on and off
Turn the On/Volume knob clockwise until it clicks: the LCD displays
switchesonandthedeviceissuesaconrmationbeep.
2The backlighting of the LCD display switches off automatically
after ve seconds for energy saving purposes, while the display
remains on.
To switch the transceiver off, turn the On/Volume counterclockwise.
5.2 Backlighting
When you switch the device on or press one of the HI/LO, SCAN/
LOCK, MENU or MON keys, the device automatically enables the
backlighting for approximately ve seconds to allow you to read
the displayed messages if the lighting is not adequate. To keep the
backlighting on for 5 seconds more, press another key.
2The backlighting of the display consumes battery energy and
should therefore be used sparingly.
5.3 Checking the level of the batteries charge
When the transceiver is in standby mode, the battery charge indicator
continuously displays the residual charge of the battery.
2Icon
indicates that the charge is insufcient and that the
device will soon switch off.
2The consumption of the battery charge is affected by the volume
level set.
5.4 Adjusting the squelch (suppressing background noise)
The radio is tted with a device called squelch that attenuates
the background noise when no signals are present. The enabling
thresholdcanbeadjustedaccordingtoyourspecicneeds.
1) Briey press MON twice. Sq displays, while the right section
displays a number from 1 to 8, depending on the squelch level
you have set.
2) Press q several times to set the enabling threshold on 1 (minimum
value). You will hear a slight background noise.
3) If the radio is not receving signals, press p several times to
gradually increase the squelch value and stop as soon as
you detect the minimum value that guarantees a stable noise
suppression.
4) Press PTT (or wait ve seconds). The device returns to the
standby mode and stores the settings you have selected.
2Make sure you do not set an excessively high squelch level
because in this case you may not be able to receive weaker
signals. On the other hand an excessively low squelch value
could enable the squelch even when no signals are present.
2This adjustment must be carried out within ve seconds, otherwise
the device returns to standby mode and stores the currently set
value.
I Squelch must always be adjusted when no signals are
present.
5.5 Selecting the operating channel
1) Press MENUonce.Thedisplayashes.
2) Press p or q to select the desired channel. To quickly scroll the
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