GME TX670 - Manual (Page 16)

PA G E 1 6 i n s t r u c t i o n m A n uA l t X 6 7 0
To switch between Simplex and Duplex modes, select
a duplex channel (1 – 8, 41 – 48) 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 allows 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 appears on the display 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.
CTCSS
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).
sCAn/memorY KeY
the SCAN key is a dual function key that controls
both scan and memory Functions.
Scanning Function
channel scanning allows you to monitor channels that
have been included in the active scan list. the active
scan list includes all channels which display the icon
‘m’ on the lcD.
To enable channel scanning, briefly press the SCAN
key. ‘scAn’ will be displayed and the radio will show
rapidly changing channel numbers as it scans through