3. Operation
The battery inside the ATR200 should be fully charged prior to the first usage.
To achieve a smallest outline, this device does not incorporate a loudspeaker.
Thus a headset must always be used to hear received signals.
3.1. Power On/Off
Press and hold the 'M' key for 2 seconds to turn on the device.
The LCD initially displays the battery level from 1 to 5 for two seconds. Thereaf-
ter, the active channel and CTCSS code is displayed.
Press and hold 'M' again for 2 seconds to switch the radio off.
Note: In order to switch the unit on or off the keypad lock needs to be turned off.
3.2. Receive
The radio is continuously in the receive mode when the unit is on. The LED in-
dicator lights blue when the radio is receiving a signal which opens the squelch.
3.3. Volume Level
The volume can be adjusted from 0 to 8 with the ' or '' key. The volume step
is thereby displayed on the LCD. 8 is the maximum, at 0 the sound is muted.
3.4. Channel Selection
Press the Menu Button 'M' once . The channel memory number blinks. Select
the desired number with '' or ''. Press 'M' again or wait 3 seconds. The
channel memories are already pre-programmed with channel and CTCSS com-
binations compatible to the tour guide system. The channel memories 11 to 20
are the same as 01 to 10.
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