General Operation - GME GA9800 Instruction Manual

GENERAl OPERATION

FUNCTION KEY
The four keys beneath the TX4600's display have both
primary and secondary functions. Their primary functions are
printed in Black while their secondary functions are printed
in Red.
To access the primary functions
Simply press the required key.
e.g. To control the Squelch, briefly press the SQL key.
To access the secondary functions
Press the F key followed immediately by the required key.
e.g. To Dim the display, briefly press the F key ('f' is
displayed), then press the DIM key. The display will dim.
Note: If the secondary key is not pressed within 10 seconds
the F key selection will be cancelled.
VOlUME ON/OFF
Rotate the volume control clockwise past the 'click' to turn
the TX4600 on. Continue to advance the control clockwise
to increase the volume. Rotate the control counter clockwise
to turn the radio off.
Note: At minimum volume setting there is still sufficient
volume to be heard in a quiet cabin environment.
SElECTING CHANNElS
Briefly press the Channel
channel or the Channel
channel. A high beep will be heard at each press.
Press and hold the or
quickly upwards or downwards through the channels at a
rate of 10 channels per second. When the key is released
channel scrolling stops.
TRANSMITTING
To transmit, press the Push to Talk (PTT) button on the
microphone. hold the microphone about 5 – 8 cm from your
face and speak at a normal voice level. The microphone is
quite sensitive so it is not necessary to raise your voice or
shout. Release the PTT when you have finished talking.
SqUElCH CONTROl.
The Squelch control is used to eliminate the background
noise when there are no signals present. The TX4600
features a preset Squelch system. The Squelch sensitivity has
been factory set to provide optimum performance in most
environments, however the sensitivity can be altered by the
user if required, to suit varying environmental situations.
PAG E 4
key to step upwards one
key to step downwards one
key for 1.5 seconds to scroll
IN ST RU C TIO N MAN UAL
The Squelch can be opened or closed with the SQL key.
When the Squelch is open, the receiver's background noise
can be heard and 'BUSy' is displayed. When the Squelch is
closed, the receiver remains quiet when there are no signals
present but an incoming signal will override the squelch and
be heard in the speaker.
To open the squelch
Briefly press the SQL key. A low beep will be heard. If
there are no signals present you will hear the receiver's
background noise.
To close the Squelch,
Briefly press the SQL key again. A high beep will be heard
and the receiver will become quiet.
Note: If an incoming signal is very weak and is close to the
minimum squelch level, it may become broken or 'chopped'
by the squelch action. To prevent this, simply open the
Squelch to allow the signal to be heard clearly. Alternatively
you can reduce the Squelch sensitivity as described below.
SqUElCH SENSITIVITY
The sensitivity of the Squelch to incoming signals can be set
to suit your operating environment. for example, excessively
noisy environments may cause the squelch to open on local
noise. The TX4600 has ten preset Squelch sensitivity settings
that can be selected using the MENU function.
To adjust the pre-set Squelch sensitivity
Please refer to the MENU settings on page 16.
PRIORITY CHANNEl
The Priority Channel feature allows you to store one of
the channels as a Priority Channel that can be instantly
recalled at the press of a key. This can be used to provide
instant access to your working channel or your local
repeater channel.
To store a Priority Channel:
1. Select the required channel.
2. Press and hold the PRI key until a high beep is heard.
The selected channel will be stored.
To Recall a Priority Channel:
Briefly press the PRI key. The radio will switch straight to
the selected Priority Channel. Any active functions (such
as scanning or quiet) will be cancelled.
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