RETEVIS T-388 Walkie Talkie User Manual

RETEVIS T-388 Walkie Talkie

Instructions for use
This set includes 2 walkie-talkie units: these are communication devices that 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!

Product Information

The product is a device designed for duqlqj. It has various features and functionalities that make it suitable for different applications.

SPECIFIC RECOMMENDATIONS

1. If you carry any kind of personal medical device, consult a doctor before use.
2. To avoid the risk of burns, do not use the device if the aerial is damaged in any way.
3. 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)
4. If travelling in a car or by bike, stop before using the device. Switch off the device if on an aero plane or in a hospital.
5. Never use the device in close proximity to a radio to avoid interference.
6. Remove the batteries if the device is not in use for an extended period of time. Never mix used and new batteries.
7. Position the transmitter and antenna at least 5 cm from your face. Direct the antenna up wards and speak normally.
8. Clean the device with a damp cloth. Avoid the use of cleaning agents and solvents.
9. Do not modify the device in any way. In the event of damage occurring, ensure that the device is checked by a qualified professional.
10. The device cannot be used to contact the emergency services.

ITEM DESCRIPTION

1. Antenna

2. RX Icon – Displayed when receiving
   TX Icon – Displayed when transmitting

3. Volume level indicator

4. Adjust or button Up( )

5. Continued reception(MON)

6. On/off button( )

7. Adjust or button Down(v)

8. Earphone socket

9. Loud speaker

10. Microphone

11. Menu: Enter the menu settings

12. Call button (CALL)

13. Keypad lock indicator

14. Battery level indicator

15. Push to talk(TALK) button

16. VOX indication

17. Scanning indication

18. Channel/Menu item Indication

19. CTCSS/Menu option-value

20. Lamp Button

21. Scan Button

22. Lamp

23. Belt attachment clip

24. Belt attachment

25. Batteries(not supplied)

26. Battery compartment

BEFORE USE
To insert batteries into the devices, first remove the belt attachment: lift the attachment clip (23) and press the belt attachment up wards (24). Open the battery compartment (26) and insert 3 AAA batteries (25) (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 adjust or 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 TALK 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 TALK 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 TALK-button to(15) confirm and return to stand-by Mode.

6. CTCSS(Continuous Tone Codes Squelch System)
   License free radios 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 radios 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 kinds of sub-channels:
   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 TALK-button(15) to confirm and return to stand-by mode.
     Note: To disable CTCSS, select code “OF* 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 TALK-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 TALK-button(15) to confirm and return to stand-by mode.

10. Scanning for an active radio channel

    • Press the SCAN-button(21):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 w-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 TALK 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.

12. Setting 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 TALK-button(15) to confirm and return to stand-by Mode.
2.  **Sending a call Tone**  

Press the CALL-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 TALK-button(15) to confirm your selection and return to the standby mode,

13. Roger Beep On/Off
    After the TALK-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. r o will be displayed.
  * Press to enable(ON) or disable the Roger Beep(OF),
  * Press the TALK-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 CALL-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 back light of the LCD display, press any button except the MENU-button (11) or the MON-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 TALK-button (15) on the unit When you use the TALK-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 re-activated as soon as a signal is detected.

18. BUILT-IN FLASH LIGHT
    As an added feature, your Radio’s has a built-in flashlight that can be used in sending light signals or for your lighting needs.

Technical specifications

• Channels 22
• Range Up to 3 Km (Open field)
• Battery 3xAAA
• Transmission Power = ‹ 500mWERP
• Modulation Type FM-F3E

Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) this symbol on the product or on its packaging indicates that this product shall not be treated as house hold waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. The recycling of materials will help to conserve natural resources. For more detailed information about recycling of this product, please contact your local city office or your household waste disposal service.

FCC

This device complies with Part 15 of the FCC Rules. operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including 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, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection a gainst harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. this equipment does cause harmful interference to radio or television reception which can be determined by turning 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.
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/Tv technician for help

NOTE: This device and its antenna(s) must not be co located or operation in conjunction with any other antenna or transmitter.

sAR statement
This device meets the government’s requirements for exposure to radio waves. This device is designed and manufactured not to exceed the emission limits for exposure to radio frequency (RF) energy set by the Federal Communications Commission of the U.s. Government. The sAR limit set by the FCC is 1.6W /Kg. For body worn operation, this device has been tested and meets the FCC RF exposure guidelines for use with an accessory that contains no metal and positions the device a minimum of 0mm from the body The body-worn test distance is 0mm. The Face-held test distance is 25mm). RF exposure compliance with any body worn accessory that contains metal was not tested and certified . and use of such body worn accessory should be avoided. Accessory available market and must be used to keep use distance 0mm from EUT to body worn operation.

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