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Instruction Manual
TX630
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.
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
. 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.
. Press and hold the
SQL
key for about
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.
. Press and hold the
SQL
key for about
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
( 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.
. 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 TX630 should now display the selected
channel number along with HI or LO to
indicate the transmit power you have set.
3. VoX Settings
The VOX feature lets you have handsfree
conversations. When you speak, the
microphone automatically detects your voice
(or other nearby sound) causing the radio
to transmit without the need to press the
Ptt
switch.
