GME TX2720 - Manual (Page 5)

TX2720 INSTRUCTION MANUAL PAGE 5
OPERATION – GENERAL FUNCTIONS
VOLUME ON/OFF
Rotate the volume control clockwise past the
‘click’ to turn the TX2720 ON. Continue to
advance the control clockwise to increase the
volume. Rotate the control counter-clockwise to
turn the radio OFF.
SQUELCH CONTROL
The Squelch control is used to eliminate the
background noise when there are no signals
present. To adjust the Squelch, first rotate it fully
counter-clockwise until the background noise is
heard, then slowly rotate it clockwise until the
noise just disappears. If there are signals on the
channel, you should wait until the channel is
clear before adjusting the Squelch (or select a
quiet channel).
Once adjusted, the receiver will remain quiet
as long as there are no signals present, but an
incoming signal will override the Squelch and be
heard in the speaker. As the control is advanced
further clockwise the Squelch threshold is
progressively increased and stronger incoming
signals are needed to override it. To receive very
weak signals or to disable the Squelch, simply
turn the control fully counter-clockwise.
CHANNEL SELECTION
Select the required channel using the rotary the
channel switch or by briefly pressing the or
keys on the microphone. The selected channel is
displayed on the LCD.
DISPLAY BRIGHTNESS
The LCD has two brightness levels to provide
suitable lighting for day or night use. The default
setting is bright.
The desired brightness level can be selected via
the ‘Dim’ switch located on the front panel.
TRANSMITTING
To transmit, press the PTT button on the
microphone. Hold the microphone 2-6 cm from
your mouth and slightly to one side so your voice
does not project directly into the microphone.
Speak at a normal voice level. Your TX2720 has
a built-in speech processor which automatically
controls the level of your transmitted voice. It is
not necessary to raise your voice or shout into
the microphone.
NOISE LIMITER
The NL key activates an extremely effective noise
limiter circuit which helps to eliminate most
electrical impulse interference caused by engine
ignition systems etc. This allows clearer reception
of weak signals even under noisy electrical
conditions.
When the NL key is selected, ‘N/L’ is displayed
on the LCD.
SCANNING
The TX2720 is fitted with a Scan function that
allows a group of user selected channels to be
scanned for activity. Your TX2720 has a Scan
memory which remembers which channels you
would like to Scan. By default your TX2720 is
supplied with all channels in the Scan memory.
To See Which Channels are Presently in the
Scan Memory
Select each channel one by one using the rotary
channel switch or by pressing the or keys
on the microphone and check to see if
is displayed to the lower right of the channel
number.
If is displayed, the channel is in the Scan
memory, otherwise the channel is not in the
Scan memory.
To Add or Remove a Channel from the
Scan Memory
Select the required channel, then press and
hold the SCAN key until a beep is heard. If
appears to the lower right of the channel
number, the channel has been added to the
Scan memory, otherwise it has been removed.
DISPLAY FUNCTION
Channel Number
Transmit Indicator
Busy Indicator
RX Signal Strength
Scan
D/W
Dual Watch
PRI
Priority Channel
Scan Memory
N/L
Noise Limiter