GME TX680 - Manual (Page 14)

Page 14 INSTRUCTION MANUAL TX680
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 you will need to either
disable CTCSS on that channel or set the
CTCSS code to ‘oF’ as described below.
To Select a CTCSS Code
From the Standby mode:
1. Select the required channel using the
or keys.
2. Press the MODE key ONCE to select
the CTCSS setting mode. ‘CTC’ will
flash on the display.
3. Press the or keys to select the
required CTCSS code. (A list of available
codes is shown in the chart at the end
of this manual).
NOTE: To turn CTCSS off on this
channel,set the CTCSS code to ‘oF’.
4. Press and hold the MODE key (or press
the PTT key momentarily) to confirm
and store your selection.
To Activate CTCSS on the Radio
1. Select a channel that has a CTCSS
code selected.
2. Press and hold the SQL key for about
2 seconds. The ‘CTC’ icon and CTCSS
code will appear on the display. CTCSS
is now enabled on ALL channels that
have CTCSS codes selected.
To Deactivate CTCSS on the Radio
1. Select a CTCSS enabled channel using
the or keys. The ‘CTC’ icon and
CTCSS code will be displayed on
that channel.
2. Press and hold the SQL key for about
2 seconds. The ‘CTC’ icon and CTCSS
code will disappear from the display
indicating CTCSS is no longer activated.
NOTE: CTCSS is only enabled on those
channels with CTCSS codes selected.
All other channels will
continue to
operate normally.
2. trAnsmitter Power
The transmitter power can be set to High
(3 watts) or Low (1 watt). The power
setting applies to all channels
To Set the Transmit Power
From the Standby mode:
1. Press the
MODE key TWICE to select
the power setting mode. ‘Po’ will be
displayed and HI or LO will be flashing
on the display.
2. Press the or keys to select the
required power setting. Select HI for
high power or LO for low power.
3. Press and hold the MODE key (or press
the PTT key momentarily) to confirm
and store your selection.
The TX680 should now display the
selected channel number along with HI
or LO to indicate the transmit power you
have set.