AR2700 operating manual
26
to external supply. However, always switch the receiver Off when
changing batteries or connecting / disconnecting external power. The
receiver may switch On by itself when fitting batteries, this is quite
normal.
(6) Basic manual operation of the receiver
Operating manual conventions
Where text appears in [SQUARE BRACKETS] the keys are to be pressed
exactly as shown.
For example: [1] [4] [5] [ENT]
Means press the 1 key followed by the 4 key followed by the 5 key followed by
the ENTER key.
Words contained in speech marks “BANK” refer to indications displayed on the
Liquid Crystal Display.
6-1 Before starting
Before operating, charge the internal NiCad batteries using the supplied
charger for approximately 16 hours. Connect the supplied telescopic
whip aerial to the BNC connector.
Note: When the receiver is switched OFF, all VFO data will be automatically
stored into EEPROM memory storage. No battery or capacitor is required for
memory backup.
6-2 Switching On
Set the squelch control to the 12 o’clock position and rotate the volume control
to the 12 o’clock position. Press and hold the [PWR] key for more than 1.5
seconds, this will switch the receiver On. It is never a good idea to switch On
the receiver with an earphone connected, there may be an audible click when
the unit is switched On or the volume may be accidentally set uncomfortably
high.
In normal use, the squelch control should be rotated clockwise until the
background noise is just cancelled. This is known as “threshold” and is the
most sensitive setting for the squelch control. Do not rotate the control too far
clockwise or only the stronger local signals will be heard. If you find setting the
squelch control difficult, try removing the aerial from the receiver.
Should you encounter problems in setting the volume level, press the [MONI]
key on the left hand panel to momentarily defeat (open) the squelch so that a
comfortable volume level may be set.
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