GME GA9800 Instruction Manual page 389

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 TX680 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 TX680 actually transmits 30
channels higher than it receives .
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 .
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INSTRUCTION MANUAL
SCAN Key
The SCAN key is a dual function key that
controls both Scan and Memory Functions.
Scanning function
Channel Scanning allows you to monitor
selected channels automatically for incoming
signals. While the radio is scanning, the
MOde setting key is disabled.
To Select Channels for Scanning
1 . Press the or
required channel .
2 . Press and hold the SCAN key until the
radio beeps. 'M' will appear on the
display indicating the selected channel is
now stored in the Scan Memory .
3 . Repeat to store further channels into the
Scan Memory .
4 . To remove a channel from the Scan
Group, press and hold the SCAN key
again . 'M' will disappear from the display .
To Scan the Selected Channels
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 or keys to select the
scan direction .
To exit the scan mode, briefly press the SCAN
key again . The TX680 will return to normal
operation and 'SCAN' will disappear from
the display .
Note: Must be at least 2 channels in Scan
Memory otherwise the radio will not scan .
keys to select the
TX680