GME GA9800 Instruction Manual page 374

If the incoming signal is encoded with a CTCSS tone that matches the
one set in your radio, the LED indicator will light orange and you will be
able to hear the signal in the speaker.
If the LED indicator lights green and the
cannot hear the signal, it is likely that your radio has CTCSS enabled and
the incoming signal is not using your selected CTCSS tone (see 'Mode
Settings' for more details on CTCSS settings).
If no further signals are received, the unit will return to Standby mode.
TRANSmITTINg
To transmit, press and hold the Push-To-Talk (PTT) switch. The other
radio you are talking to must be set to the same channel (and CTCSS
code if applicable). Hold the TX670 approximately 5 to 8 cm from your
face with the antenna vertical and speak into the built-in microphone.
While the PTT switch is pressed, the LED indicator on the upper edge of
the radio will light red and the
When you have finished speaking, release the PTT switch to receive
incoming signals (it is not possible to transmit and receive at the same
time). If no further signals are received, the unit will to revert to
Standby mode.
TIP:
The PTT switch can also be used to transmit a Call Alarm melody.
When the Call Alarm melody is enabled (see Mode settings for more
details on the Call Alarm settings), pressing the PTT switch twice quickly
will call another party on the same channel and play the Call Alarm
melody in their radio's speaker. When this happens, the
appear and the LED indicator will light red for about 5 seconds.
DUPLEX/mONITOR KEy
The Duplex/Monitor key is a dual function key that controls both the
Duplex and Monitor functions.
DUP Key
Duplex operation allows the TX670 to transmit on a different frequency
to that which it receives. This allows operation through repeater stations
in your area. Repeaters automatically re-transmit your signal over a
much wider area, providing greatly increased range. The Duplex mode
only works on channels 1 - 8. With Duplex selected, your TX670 actually
transmits 30 channels higher than it receives.
T X6 7 0 TP
icon appears but you
icon will appear on the LCD.
icon will
INSTRUCT IO N MA NUAL
Channel
1 2 3
Selected
Receive
1 2 3
Channel
Transmit
31 32 33
Channel
To switch between Simplex and Duplex modes, select a duplex channel
(1-8) then briefly press the DUP button. When Duplex mode is selected,
'DUP' appears on the display on that channel.
MOn Key
To open the Squelch, press and hold the MOn key. This will allow you to
check the current channel for activity before transmitting, particularly if
you have CTCSS enabled. When the Squelch is open, the LED indicator
on the upper edge of the radio will light green, the
on the display and you will hear static or hiss if the channel is clear. Do
not transmit if you hear any conversations. Press and hold the MOn key
again to close the Squelch.
CTCSS
To activate or deactivate CTCSS, the current channel must have a CTCSS
code selected via the MODE key, (see MODE key settings for
more details).
SCAN/mEmORy KEy
The SCAN key is a dual function key that controls both Scan and
Memory Functions.
Scanning Function
Channel Scanning allows you to monitor channels that have been
included in the active scan list. The active scan list includes all channels
which display the icon 'M' on the LCD.
To enable channel scanning, briefly press the SCAn key. 'SCAN' will be
displayed and the radio will show rapidly changing channel numbers as
it scans through the channels. While scanning, briefly press the
keys to select the scan direction.
To exit the Scan mode, briefly press the SCAn key again. The TX670 will
return to normal operation and 'SCAN' will disappear from the display.
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4 5 6 7 8
34 35 36 37 38
icon will appear
or
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