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G ENER AL O PER AT I O N
FUNCTION KEY
The four keys beneath the TX4610'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. eg. To control the
Squelch, briefly press the SQL key.
To access the secondary functions
Press the F key followed immediately by the
required key. Eg. 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 TX4610 on. Continue to
advance the control clockwise to increase the
volume. Rotate the control counterclockwise 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
one channel or the Channel
downwards one channel. A high beep will be
heard at each press.
Press and hold the
to scroll quickly upwards or downwards
through the channels at a rate of 10 channels
per second. When the key is released channel
scrolling stops.
TRANSMITTING
Prior to transmitting, always check the channel
is not being used. This can be done by either
listening or by checking the 'Busy' indicator is
not lit.
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key to step upwards
key to step
or
key for 1.5 seconds
I N ST R UC T I O N M A NUAL
To transmit, press the PTT (Push-to-Talk) 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 TX4610 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.
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 TX4610 has ten preset Squelch
sensitivity settings that can be selected using
MENU
the
function.
T X 4 6 1 0
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