GME TX680 - Manual (Page 13)

TX680 INSTRUCTION MANUAL Page 13
Scanning Features
• If 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.
• Press 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.
• When the unit has stopped on a busy
channel, press the or keys to
‘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 and Key-Lock
functions.
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 DUP button again. The icon will
disappear from the display.
MODE KEY
The MODE key is used to set the various
feature settings of the TX680. The
following chart shows the order of these
selections.
Standby Mode:
1. CTCSS Code Selection
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.