GME GA9800 Instruction Manual page 358

speaker. When this happens, the
the LED indicator will light red for about 3 seconds. The call
alarm can only be sent once per minute.
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.
Channel
Selected
Receive
Channel
Transmit
31
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
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.
TX670
1 2
1 2
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Instruction Manual
icon will appear and
3 4 5
3 4 5
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icon will appear on the display
6 7
6 7
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