GME TX3120S - Manual (Page 12)

PA G E 1 2 I N S T R U C T I O N M A N UA L T X 3 1 2 0 S
NOTE: The Squelch level can be actively adjusted
while the radio is scanning. This allows you to
tighten the Squelch in cases where an undesired
weak or noisy signal is interrupting the scan.
SIGNAL METER
The signal meter indicates the relative strength of
the incoming signal in numerical format. A digital
signal strength level is displayed on the lower
left of the Channel Display in values from 0 to 9.
Signals above strength 9 are displayed as 9+.
The signal strength is also displayed on a bar graph
in the upper left of the display with a longer bar
indicating a stronger signal.
By default the digital signal strength meter displays
signal strengths in the standard logarithmic format
however it can be set to display signal strengths in
linear format or the location can be used to display
the battery voltage instead.
To change the digital signal strength options;
1. Press and hold the Channel control to enter
the menu. The display will show the current
Squelch level setting.
2. Rotate the Channel control until ‘S-MET’,
‘S-LIN’ or ‘BATT’ is displayed then press the
Channel control to select it. The selected
option will be flashing.
3. Rotate the Channel control to make the
desired selection.
• Select ‘S-MET’ to display the logarithmic signal
meter.
• Select ‘S-LIN’ to display the linear signal meter.
• Select ‘BATT’ to display the battery voltage
instead of signal strength.
When finished briefly press the Channel control to
return to the menu or press and hold the Channel
control to exit the menu.
TRANSMITTING
Prior to transmitting, always check the channel
is not being used. This can be done by listening
to the channel or by visually checking that the
icon is not visible or the signal meter is not
indicating a signal.
To transmit, press the PTT on the microphone. The
icon will appear. 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. The
icon
will disappear.
IMPORTANT: Always listen to ensure the channel
is free before transmitting.
TIME-OUT TIMER
The radio has a built-in time-out timer that
automatically limits transmissions to a maximum
of 3 minutes of continuous operation. This feature
is required by the ACMA to prevent accidental
blocking of the frequency should your PTT become
jammed or be otherwise pressed accidentally.
Ten seconds before time-out occurs, ‘TOT’ will
flash on the display. Once time-out has occurred an
alert beep will be heard and the radio will return
to receive mode. If the PTT remains pressed, ‘TOT’
will continue flashing on the display until the PTT
is released. Normal operation will then be restored.
BACKLIGHTING
The Liquid Crystal Display and keys are backlit for
easier viewing at night. The backlight remains on
whenever the radio is switched on.