TX667 Instruction Manual
28
To select a CTCSS or DCS code:
1. Hold the Menu key for 2 seconds. The channel number will ash.
2. Press the Menu key repeatedly until ‘ct’ (for CTCSS) or ‘dt’ (for DCS)
is displayed.
3. Press the or keys to select the required tone/code.
4. To select CTCSS tones 01 to 50, press the or keys while ‘ct’ is
displayed. When a CTCSS code is selected, the
TX677 Instrucon Manual
12 June 2018
© 2018 Standard Communicaons Pty Ltd trading as GME. All rights reserved.
22
50157
Content
Scanning Features
• If a signal is received, the scan is paused allowing you to transmit and receive on that
channel. During this me the icon will connue to ash to show that the scan is sll
acve. Once the channel has been inacve for 5 seconds the scan will automacally
resume.
• Pressing the PTT switch while the radio is scanning will jump to the working channel
allowing you to transmit and receive on that channel (the working channel is the channel
the radio was on at the me the scan was acvated). During this me the icon will
connue to ash to show that the scan is sll acve. Once the working channel has been
inacve for 5 seconds the scan will automacally resume.
• If the scan is paused on a busy channel that you don’t wish to listen to, press the or
keys to skip over the channel and connue scanning.
The Scan mode will reduce the overall baery life because the ‘Standby’ (baery saver) feature
is overridden. If the baery is running low you should avoid scanning to conserve power.
CTCSS, DCS and Silent Mode
CTCSS (Connuous Tone Coded Squelch System) and DCS (Digital Coded Squelch) are similar squelch
quieng systems that allow groups of users to share the same channel without disturbing each
other. The CTCSS system uses 1 of 50 low frequency tones to open and close the squelch on the
radio. The DCS system is similar to CTCSS but uses 1 of 104 digital codes to control the squelch.
When CTCSS or DCS is enabled on your radio, only signals that are using the same tone or code as
your radio will be heard in the speaker and the squelch will remain closed to all other signals.
CTCSS and DCS codes do not prevent others from hearing your transmission.
CTCSS/DCS tones are switched o by default.
To use CTCSS/DCS you must rst enable a suitable CTCSS/DCS code using the menu (see Menu
opons for more details). Your choice of CTCSS or DCS will largely depend on which is currently being
used by other radios in your group. If neither system is currently in use, you can make your own
choice. There is no dierence in performance between the two systems. Once a CTCSS or DCS code
has been enabled, the display will show
(for CTCSS) or (for DCS). You can now make selected
channels ‘quiet’ by enabling Silent mode on those channels.
To acvate or deacvate silent mode on a channel:
1. Select the required channel.
2. Press and hold the SQL key. The selected CTCSS or DCS code will be displayed on that
channel.
Channels that have Silent mode enabled will now remain quiet unless a signal containing your
chosen code is received.
icon is displayed.
5. To select DCS codes, hold the key to scroll past CTCSS tone
50 until ‘dt’ is displayed. Now use the or keys to select the
required DCS code 001 to 104. When a DCS code is selected the
TX677 Instrucon Manual
12 June 2018
© 2018 Standard Communicaons Pty Ltd trading as GME. All rights reserved.
22
50157
Content
Scanning Features
• If a signal is received, the scan is paused allowing you to transmit and receive on that
channel. During this me the icon will connue to ash to show that the scan is sll
acve. Once the channel has been inacve for 5 seconds the scan will automacally
resume.
• Pressing the PTT switch while the radio is scanning will jump to the working channel
allowing you to transmit and receive on that channel (the working channel is the channel
the radio was on at the me the scan was acvated). During this me the icon will
connue to ash to show that the scan is sll acve. Once the working channel has been
inacve for 5 seconds the scan will automacally resume.
• If the scan is paused on a busy channel that you don’t wish to listen to, press the or
keys to skip over the channel and connue scanning.
The Scan mode will reduce the overall baery life because the ‘Standby’ (baery saver) feature
is overridden. If the baery is running low you should avoid scanning to conserve power.
CTCSS, DCS and Silent Mode
CTCSS (Connuous Tone Coded Squelch System) and DCS (Digital Coded Squelch) are similar squelch
quieng systems that allow groups of users to share the same channel without disturbing each
other. The CTCSS system uses 1 of 50 low frequency tones to open and close the squelch on the
radio. The DCS system is similar to CTCSS but uses 1 of 104 digital codes to control the squelch.
When CTCSS or DCS is enabled on your radio, only signals that are using the same tone or code as
your radio will be heard in the speaker and the squelch will remain closed to all other signals.
CTCSS and DCS codes do not prevent others from hearing your transmission.
CTCSS/DCS tones are switched o by default.
To use CTCSS/DCS you must rst enable a suitable CTCSS/DCS code using the menu (see Menu
opons for more details). Your choice of CTCSS or DCS will largely depend on which is currently being
used by other radios in your group. If neither system is currently in use, you can make your own
choice. There is no dierence in performance between the two systems. Once a CTCSS or DCS code
has been enabled, the display will show (for CTCSS) or (for DCS). You can now make selected
channels ‘quiet’ by enabling Silent mode on those channels.
To acvate or deacvate silent mode on a channel:
1. Select the required channel.
2. Press and hold the SQL key. The selected CTCSS or DCS code will be displayed on that
channel.
Channels that have Silent mode enabled will now remain quiet unless a signal containing your
chosen code is received.
icon is displayed.
6. To return to CTCSS tones hold the or keys until ‘ct’ is
displayed again.
7. To turn CTCSS/DCS tones o, hold the or keys to step to the
end of the code list until ‘oF’ is displayed.
8. Press the PTT switch to conrm and store your selection. The
TX677 Instrucon Manual
12 June 2018
© 2018 Standard Communicaons Pty Ltd trading as GME. All rights reserved.
22
50157
Content
Scanning Features
• If a signal is received, the scan is paused allowing you to transmit and receive on that
channel. During this me the icon will connue to ash to show that the scan is sll
acve. Once the channel has been inacve for 5 seconds the scan will automacally
resume.
• Pressing the PTT switch while the radio is scanning will jump to the working channel
allowing you to transmit and receive on that channel (the working channel is the channel
the radio was on at the me the scan was acvated). During this me the icon will
connue to ash to show that the scan is sll acve. Once the working channel has been
inacve for 5 seconds the scan will automacally resume.
• If the scan is paused on a busy channel that you don’t wish to listen to, press the or
keys to skip over the channel and connue scanning.
The Scan mode will reduce the overall baery life because the ‘Standby’ (baery saver) feature
is overridden. If the baery is running low you should avoid scanning to conserve power.
CTCSS, DCS and Silent Mode
CTCSS (Connuous Tone Coded Squelch System) and DCS (Digital Coded Squelch) are similar squelch
quieng systems that allow groups of users to share the same channel without disturbing each
other. The CTCSS system uses 1 of 50 low frequency tones to open and close the squelch on the
radio. The DCS system is similar to CTCSS but uses 1 of 104 digital codes to control the squelch.
When CTCSS or DCS is enabled on your radio, only signals that are using the same tone or code as
your radio will be heard in the speaker and the squelch will remain closed to all other signals.
CTCSS and DCS codes do not prevent others from hearing your transmission.
CTCSS/DCS tones are switched o by default.
To use CTCSS/DCS you must rst enable a suitable CTCSS/DCS code using the menu (see Menu
opons for more details). Your choice of CTCSS or DCS will largely depend on which is currently being
used by other radios in your group. If neither system is currently in use, you can make your own
choice. There is no dierence in performance between the two systems. Once a CTCSS or DCS code
has been enabled, the display will show
(for CTCSS) or (for DCS). You can now make selected
channels ‘quiet’ by enabling Silent mode on those channels.
To acvate or deacvate silent mode on a channel:
1. Select the required channel.
2. Press and hold the SQL key. The selected CTCSS or DCS code will be displayed on that
channel.
Channels that have Silent mode enabled will now remain quiet unless a signal containing your
chosen code is received.
(CTCSS) or
TX677 Instrucon Manual
12 June 2018
© 2018 Standard Communicaons Pty Ltd trading as GME. All rights reserved.
22
50157
Content
Scanning Features
• If a signal is received, the scan is paused allowing you to transmit and receive on that
channel. During this me the icon will connue to ash to show that the scan is sll
acve. Once the channel has been inacve for 5 seconds the scan will automacally
resume.
• Pressing the PTT switch while the radio is scanning will jump to the working channel
allowing you to transmit and receive on that channel (the working channel is the channel
the radio was on at the me the scan was acvated). During this me the icon will
connue to ash to show that the scan is sll acve. Once the working channel has been
inacve for 5 seconds the scan will automacally resume.
• If the scan is paused on a busy channel that you don’t wish to listen to, press the or
keys to skip over the channel and connue scanning.
The Scan mode will reduce the overall baery life because the ‘Standby’ (baery saver) feature
is overridden. If the baery is running low you should avoid scanning to conserve power.
CTCSS, DCS and Silent Mode
CTCSS (Connuous Tone Coded Squelch System) and DCS (Digital Coded Squelch) are similar squelch
quieng systems that allow groups of users to share the same channel without disturbing each
other. The CTCSS system uses 1 of 50 low frequency tones to open and close the squelch on the
radio. The DCS system is similar to CTCSS but uses 1 of 104 digital codes to control the squelch.
When CTCSS or DCS is enabled on your radio, only signals that are using the same tone or code as
your radio will be heard in the speaker and the squelch will remain closed to all other signals.
CTCSS and DCS codes do not prevent others from hearing your transmission.
CTCSS/DCS tones are switched o by default.
To use CTCSS/DCS you must rst enable a suitable CTCSS/DCS code using the menu (see Menu
opons for more details). Your choice of CTCSS or DCS will largely depend on which is currently being
used by other radios in your group. If neither system is currently in use, you can make your own
choice. There is no dierence in performance between the two systems. Once a CTCSS or DCS code
has been enabled, the display will show (for CTCSS) or (for DCS). You can now make selected
channels ‘quiet’ by enabling Silent mode on those channels.
To acvate or deacvate silent mode on a channel:
1. Select the required channel.
2. Press and hold the SQL key. The selected CTCSS or DCS code will be displayed on that
channel.
Channels that have Silent mode enabled will now remain quiet unless a signal containing your
chosen code is received.
icon remains on the display to conrm the code
system you have selected.
To enable silent mode on a channel:
1. Select the required channel.
2. Press and hold the SQL key for about 2 seconds. The selected code
number will be displayed on that channel.
3. The selected channel will now remain silent unless a signal is
received containing the chosen code.
Note: Silent mode will only be enabled on channels you select. Other channels will
remain open to all incoming signals.
To disable silent mode on a channel:
1. Select the required channel. The CTCSS/DCS code will be
displayed.
2. Press and hold the SQL key for about 2 seconds. The selected
code number will disappear from the display on that channel. The
selected channel will now be open to all incoming signals.
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