ChangTaiWei Electronic T-228 Two Way Radio User Manual T228 CTCSS MANUAL

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Document ID	3401279
Application ID	XoD8DLqsmmQFmx3It4ApMw==
Document Description	User manual
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Permanent Confidential	No
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Document Type	User Manual
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Date Submitted	2017-05-11 00:00:00
Date Available	2017-05-24 00:00:00
Creation Date	2012-05-07 20:17:12
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Document Lastmod	2017-05-22 09:25:52
Document Title	T228 CTCSS MANUAL
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T wintalker
EN
USER INSTRUCTIONS
PIC 01
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PIC 02
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EN~ Instructions for use
This set includes 2 walkie-talkie units: these are
communication devices which operate on mobile radio
frequencies. They come with 8/20/22(option) channels as well
as a back-lit LCD screen, enabling you to communicate over
several kilometres free-of-charge (up to 3 km in open areas)
NOTE: Please read these user instructions carefully before
using the equipment and retain for future consultation!
SPECIFIC RECOMMENDATIONS
· If you carry any kind of personal medical device, consult a
doctor before use.
· To avoid the risk of burns, do not use the device if the aerial
is damaged in any way.
· Do not use the device in a potentially explosive setting
(e.g. around petrol pumps, on the lower deck of a boat or
around a fuel storage installation or chemical products)
· If travelling in a car or by bike, stop before using the device.
Switch off the device if on an aeroplane or in a hospital.
· Never use the device in close proximity to a radio to avoid
interference.
· Remove the batteries if the device is not in use for an
extended period of time. Never mix used and new batteries.
· Position the transmitter and antenna at least 5 cm from your
face. Direct the antenna upwards and speak normally.
· Clean the device with a damp cloth. Avoid the use of cleaning
agents and solvents.
· Do not modify the device in any way. In the event of damage
occurring, ensure that the device is checked by a qualified
professional.
· The device cannot be used to contact the emergency services.
ITEM DESCRIPTION (Pic 01,02)
1. Antenna
2. RX icon -Displayed when receiving
TX icon -Displayed when transmitting
3. Volume level indicator
4. Adjustor button Up ( )
5. Continued reception(
6. On /off button( )
7. Adjustor button Down ( )
8. Earphone socket
9. Loud speaker
10.Microphone
11. Menu,Enter the menu settings
12. Call button( )
13. Keypad lock indicator
14. Battery level indicator
15. Push to talk (PTT)button
16. VOX indication
17. Scanning indication,Displayed during scan mode
18. Channel/Menu item indication
19. CTCSS / Menu option -value
20. Belt attachment clip
21. Belt attachment
22. Batteries (not supplied)
23. Battery compartment
BEFORE USE (Pic 02)
To insert batteries into the devices, first remove the belt attachment:
lift the attachment clip (20) and press the belt attachment upwards
(21).
Open the battery compartment (23) and insert 3 AAA batteries (22)
(not supplied), ensuring that the poles are correctly aligned. Then
close the lid.
USING THE TWINTALKER
1. Turning the device on/off: To turn the devices on or off, hold
down the on/off button (6) for 3 seconds a BEEP sound will be
played to confirm.
2. Adjusting the volume: To increase the volume, press the Up
adjustor button (4) and press the Down (7) button to decrease
volume.
Note: The volume level (3) is displayed on the screen.
3. Battery Charge Level/Low Battery Indication
The battery charge level is indicated by the number of squares
present inside the battery icon on the LCD Screen.
Battery Full
Battery 2/3 charged
Battery 1/3 charged
Battery empty
When the battery charge level is low, the battery icon will flash and a
beep will be heard to indicate that the batteries need to be replaced or
recharged.
4. Receiving/transmitting communications:
The devices are in 'Reception' mode when lit up, i.e. they are ready to
receive a call or sound transmitted on the activated frequency.
· When you press the Call tone button (12), the device switches to
'Transmission' mode. You are then transmitting a sound signal to the
other device.
·
To send a voice message, press the PTT button (15) and speak
into the microphone (10). Continue to press the button until you
have finished transmitting your message.
Hold the microphone a minimum of 5 cm from your face.
Note:
- The other device must be set to the same channel and have set the
same CTCSS code(see point 7)
- When the transmission is complete and the PTT button (15) is no
longer held down, the other device will emit a sound (BEEP) to
indicate that this device is ready to transmit.
5. Changing Channels
• Press the MENU button (11)once, the current channel number
flashes on the display.
• Press the button (4) or the - button (7) to change the channel.
• Press the PTT - button to (15) confirm and return to stand-by Mode.
Note:If no button is pressed within 15 seconds during setting, the
unit will return to standby.
6.CTCSS (Continious Tone Coded Squelch System)
License free radio's operating on the 400~470 MHz frequency band,
like the Twintalker , have 8/20/22 available radio channels. If there
are many radio's users in your neighborhood, there is a chance that
some of these users are operating on the same radio channel.
To prevent that you receive signals from other users, sub-channels
have been integrated.
Two radio's will only be able to communicate with each other when
they are operating on the same radio channel and when they have
selected exactly the same sub-channel.There are two kind of subchannels :
• Continuous Tone Coded Squelch System (CTCSS)
When using CTCSS, a low frequency tone (between 67 and 250 Hz)
will be transmitted along with the voice signal. There are 38 available
tones to choose from. You are free to choose one of these 38 available
tones. Due to filtering, these tones will generally not be audible so
they will not disturb the communication.
7.CTCSS
• Press the MENU-button(11) twice : The current CTCSS code flashes
on the display.
• Press the -button(4) or the -button(7) to change to another code.
• Press the PTT-button(15) to confirm and return to stand-by mode.
Note:To disable CTCSS, select code "0F” for CTCSS in the
menu.When the entry is confirmed, "OF" will be displayed.
8.Monitor
You can use the monitor feature to check for weaker signals in the
current channel.
• Press the MON-button to activate channel monitoring.
• Press the MON-button to stop channel monitoring.
Note:During channel monitoring the receiver circuit in the Radio’s
will not listen to CTCSS codes.
9. VOX Selection
The Radio’s is capable of voice activated (VOX) transmission. In
VOX mode, the radio will transmit a signal when it is activated by
your voice or other sound around you. VOX operation is not
recommended if you plan to use your radio in a noisy or windy
environment.
Note:VOX mode will be overrided when you press the PTT - button
“ 15” .
• Press the MENU- button(11) three times, the current VOX setting
flashes on the display and the VOX icon is displayed.
• Press -button(4) to set the VOX sensitivity level between 1 and 3
(level 3 is the most sensitive level).
• Press -button(7) until “OF” appears on the display,to turn VOX
OFF.
• Press the PTT-button(15) to confirm and return to stand-by mode.
10. Scanning for an active radio channel
• Press and hold the -button(12) : The 'Scan' function indicator (17)
will appear on the screen and the channel (18) will scan continuously
from 1 to 8/20/22.
• Press the -button(7) to start the channel scan from 8/20/22 to 1.
Once an active channel is found, the scanning will stop and you can
listen to the transmission.
When the transmission on the found channel stops, the scanning will
resume automatically.
NOTE:If you press the PTT button(15) while listening to a found
channel, the Radio’s will go back in stand-by mode on the found
channel.
11. Call Tones
A call tone alerts others that you want to start talking.
11.1Setting the Call Tone
The Twintalker has 10 call tones.
• Press the MENU- button(11) four times, “CA” is displayed and the
current call tone is flashing.
• Press the -button(4) or the -button(7) to change to another Call
Tone.
• Press the PTT - button(15) to confirm and return to stand-by Mode.
11.2 Sending a call Tone
Press the -button(12) briefly. The call tone will be transmitted on
the set channel.
12. Key-Tone On/Off
When a button is pressed, the unit will beep briefly.
To set the key-tone.
• Press the MENU- button(11) five times. “tO” will be displayed.
• Press to enable (ON) or
disable the Key Tones (OF).
• Press the PTT - button(15) to confirm your selection and return to
the standby mode.
13. Roger Beep On/Off
After the PTT-button is released, the unit will send out a roger beep
to confirm that you have stopped talking.
To set the Roger Beep.
• Press the MENU- button(11) six times. “rO” will be displayed.
• Press to enable (ON) or
disable the Roger Beep (OF).
• Press the PTT - button(15) to confirm your selection and return to
the standby mode.
14.Button Lock
• Press and hold the MENU- button(11) for two seconds to
activate the Button lock mode. The button lock icon is
displayed on the LCD Screen.
• Press and hold the MENU- button(11) again for two seconds
deactivate button lock
Note:The PTT - button(15) , the -button(12), MON-button(5) and
the on/off button (6) will still be functional when the Button Lock
is activated.
15. Display back light
To activate the backlight of the LCD display, press any button
except the MENU- button(11) or theMON-button(5) .
The LCD backlight will light up for 5 seconds.
16. Earpiece connection
The Twintalker can be used with the included earpiece.
The connector is located on the upper side of the unit(8) .
Insert the earpiece plug into the connector (2,5mm jack).
The small button on the earpiece has the same function as the PTT button(15) on the unit
When you use the PTT - button (15)from the Earpiece, you must
also use the microphone from the earpiece to talk into.
Note:Do not connect other earpieces. This may damage your device.
17. Battery saving function:
When the device has not been used for 6 seconds, the economy
mode is automatically activated. This does not affect the reception
of transmissions and the standard mode is automatically reactivated as soon as a signal is detected.
FCC Statement
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) thi
s device may not cause harmful interference, and (2) this device must accept any interference received, incl
uding interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’
s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursua
nt to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful inte
rference in a residential installation. This equipment generates uses and can radiate radio frequency energy a
nd, if not installed and used in accordance with the instructions, may cause harmful interference to radio com
munications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by turn
ing the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
‐ Reorient or relocate the receiving antenna.
‐ Reorient or relocate the receiving antenna.
‐ Reorient or relocate the receiving antenna.
‐Consult the dealer or an experienced radio/TV technician for help important announcement
Safety Information
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. Your
wireless handheld portable transceiver contains a low power transmitter. When the talk bottom is pushed, it
sends out radio frequency (RF) signals. The devices is authorized to operate at a duty not to exceed 50%.
For body-worn operation, this radio has been tested and meets the FCC RF exposure guidelines when used with
manufacturer accessories supplied or designated for this product. Use of other accessories may not ensure
compliance with FCC RF exposure guidelines. Use only the supplied antenna. Unauthorized antennas,
modifications, or attachments could damage the transmitter and may violate FCC regulations.
Hold the transmitter approximately 2 inches (25mm) from your face and speak in a normal voice, with the
antenna pointed up and away.
FRS/GMRS Frequency Allocation and Compatibility
Important: Please note that Cobra GMRS models with 15 Channels may designate different channel numbers
for the same frequency. For example, a Cobra 15 Channel GMRS model would need to be tuned to Channel 11
in order to communicate with a 22 Channel GMRS tuned to Channel 15. Please refer to the chart below for
channel/ frequency number compatibility.
A = Channel No. for 22 Channel FRS/GMRS Models
B = Channel No. for 15 Channel GMRS Models
C = Type of Radio Service
D = Frequency in MHz
FRS/GMRS
462.5625
FRS/GMRS
462.5875
FRS/GMRS
462.6125
FRS/GMRS
462.6375
FRS/GMRS
462.6625
FRS/GMRS
462.6875
FRS/GMRS
462.7125
8
10
11
12
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15
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20
21
22
11
12
13
10
14
15
FRS
FRS
FRS
FRS
FRS
FRS
FRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
467.5625
467.5875
467.6125
467.6375
467.6625
467.6875
467.7125
462.5500
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250
LICENSING
For Products Used in the U.S.A.
FCC Licensing Required This two-way radio operates on GMRS (General Mobile Radio Service) frequencies
which require an FCC (Federal Communications Commission) license. A user must be licensed prior to operating
on Channels 1 through 7 or 15 through 22, which comprise the GMRS channels of this radio. Serious penalties
could result for unlicensed use of GMRS channels, in violation of FCC rules. Operation of this radio is subject to
additional rules specified in 47 C.F.R. Part 95.
Licensed users will be issued a call sign by the FCC, which should be used for station identification when
operating this radio. GMRS users should also cooperate by engaging in permissible transmissions only, avoiding
channel interference with other GMRS users, and being prudent with the length of their transmission time.
For licensing information and application forms, please call the FCC Hotline at 800-418-FORM. Request form
#159 and form #605. Questions regarding the license application should be directed to the FCC at 888-CALLFCC. Additional information is available on the FCC’s website at www.fcc.gov.
Channel 1 through 7 and channels 8 through 14 comprise the FRS (Family Radio Service). No license is required
to operate on the FRS.

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