Bedienungsanleitung Midland Alan HP450 2A Rugged (Seite 12 von 26) (Englisch)

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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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