GME TX630 User Manual
Page 6

Page 6
Instruction Manual
TX630
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 TX630 
approximately 5 to 8 cms 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 icon will appear 
on the LCD.
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 icon will appear 
and the LED indicator will light RED for about 
5 seconds. 
Selecting Channels
In the ‘Standby’ mode, press the key to 
step up one channel or the key to step 
down one channel.
Press and hold the or keys to quickly 
scroll through the channels.
SQL Key
The SQL key is a dual function key that 
controls the both the Squelch and CTCSS
Squelch
To open the squelch, briefly press the SQL 
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 icon will appear on the 
display and you will hear static or hiss if the 
channel is clear. Do not transmit if you hear 
any conversations. Briefly press the SQL key 
again to close the squelch.
CtCSS
Press and hold the SQL key to activate or 
deactivate CTCSS. When activated, the ‘CTC’ 
icon will appear on the display, along with 
the selected CTCSS code.
Note: 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).
DUP Button
Duplex operation allows the TX630 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 TX630 actually transmits 30 
channels higher than it receives.
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.
SCan Key
The SCan key is a dual function key that 
controls both Scan and Memory Functions.
