1. Ctcss Code Selection; 2 . Transmitter Power; 3 . Vox Settings - GME GA9800 Instruction Manual

4 channel amplifier
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Scanning features
• I f a signal is received, the scan is paused,
allowing you to transmit and receive on
that channel . The radio will automatically
resume scanning a few seconds after the
last reception or transmission .
• P ress the PTT switch while the unit is
scanning to jump to the home channel
(the home channel is the channel the
Radio was on at the time scanning was
activated). You can then transmit
and receive on that channel . The radio
will automatically resume scanning a
few seconds after the last reception
or transmission .
• W hen the unit has stopped on a busy
channel, press the
'Skip' over the busy channel and
continue scanning .
TIp: The scan mode will reduce the overall
battery life because the Standby (battery
saver) feature is overridden. You should avoid
scanning if the battery is running low and
you need to conserve power .
Key-LOCK fUNCTION
The Key-Lock function disables the keys to
prevent accidental key presses from changing
the preferred settings of the radio . When the
keys are locked, the Icon is displayed and
all key presses are ignored except for the
pTT
Key-Lock
and
To activate the Key-Lock, press and hold the
dUp
button for about 2 seconds. The icon
will appear on the display . To cancel the
Key-Lock, press and hold the
TX680
or
keys to
functions .
dUp
button
INSTRUCTION MANUAL
again . The
icon will disappear from
the display .
MOde Key
MOde
The
key is used to set the various
feature settings of the TX680 . The following
chart shows the order of these selections .
Standby Mode:
1 .

2 . Transmitter Power

3 . VOX Settings

4 . Dual Watch Channel
5 . Button Beep Selection
6 . Call Alarm Selection

1. CTCSS COde SeLeCTION

The Continuous Tone Coded Squelch System
(CTCSS) is a squelch quieting system that
allows groups of users to share the same
channel without disturbing each other. It uses
1 of 38 low frequency tones to open and
close the squelch on the radio . The CTCSS
codes do not prevent others from hearing
your transmission . They simply provide you
with a quieter channel by preventing you
from hearing transmissions that are not using
the same code as you and are therefore not
directed at you .
Note: To communicate with other UHF
radios using CTCSS, all radios you wish to
communicate with must be switched to the
same channel and have the same CTCSS
code selected . If you wish to receive signals
from UHF radios that are not using CTCSS
CTCSS Code Selection
Page 9

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