GME TX3520 User Manual
Page 9
t X 3 5 1 0 / t X 3 5 2 0 / t X 3 5 4 0
I n s t r u c t I o n m A n uA l
PA G E 9
NOTE:
When using the F key to access other functions, F is
displayed to indicate that ‘Function’ mode is activated. If the
required function is not selected within 5 seconds the F key
selection will time out with a low beep and F will disappear
from the display.
A more detailed description of these key functions is included
in this ‘General operation’ section. these instructions describe
the radio functions using the tX3510/tX3520 controls (with the
tX3540 controls shown in brackets).
VOLUME
rotate the Volume control clockwise past the click (or
press the
PWR
key) to turn the radio on. rotate the Volume
control left or right (or press the + or – keys) to adjust the
volume.
If no sound is heard, briefly press the SQL key to temporarily
un-mute the radio then adjust the Volume while listening to
the background noise. When finished, briefly press the SQL
key again to re-mute the radio.
NOTE:
At the minimum volume setting there is still sufficient
Volume to be heard in a quiet cabin environment.
SELECTING CHaNNELS
to select the required channel, rotate the Channel knob (or
press the
or keys
). rotate the knob clockwise (or press
) to select a higher channel or counter clockwise (or press
) to select lower channels. the selected channel is displayed
on the lcD.
SqUELCH
the squelch is used to eliminate any annoying background
noise when there are no signals present. the squelch can
be opened or closed using the SQL key. When the squelch
is open the receiver’s background noise can be heard and
the symbol is displayed. When the squelch is closed the
receiver remains quiet while there are no signals present but
any incoming signals will override the squelch and be heard in
the speaker.
Adjusting the Squelch level
the squelch sensitivity level has been factory set to provide
optimum performance under most operating conditions. If
required, the sensitivity level can be adjusted to suit
changing conditions.
to adjust the squelch sensitivity, briefly press the Channel
knob (or
LVL
PRI
key). the channel display will show the
current squelch level setting in values from SQL-1 to SQL-9.
rotate the Channel knob (or press the or
keys on
the controller microphone) to change the squelch setting.
A squelch setting of SQL-1 allows the squelch to open on
very weak signals whereas a setting of SQL-9 requires much
stronger signals to overcome the squelch. After adjusting the
squelch sensitivity, briefly press the Channel knob (or
LVL
PRI
key) to return to normal operation.
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. signal strengths are
displayed on the lower left of the channel Display in values
from 0 to 9. signals above strength 9 are displayed as 9+.
NOTE:
refer to the Configuration Menu for other options
that can be displayed in this location.
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 switch on the microphone. the
icon
will appear. Hold the microphone about 5-8 cm from