Retevis RT-628 User manual

US
RT628
Kids Walkie Talkie
User’s Guide
RT-628 RT-628

Read this operating instruction carefully
before using your Retevis RT628 two way
radio, including the part on Product Safety
and RF Energy Exposure Compliance
CAUTION
1
RT-628
High/Low Power
Headphone Plug/
Microphone jack
Antenna
Key Lock
Scanning
Roger Beep Icon
CTCSS
TX/RX Icon
VOX
Up/Monitor Button
Menu/Lock Button
Up Button
Battery Level
PTT Button
Channel/Menu
Item
Power/Scan
Button
Down Button
MIC
Speaker
Product Features
Product number
Frequency range
Channel number
Channel spacing
Working voltage
Frequency stability
Operating temperature range
The antenna impedance
Overall dimensions
Weight
TECHNICAL PARAMETERS
Rf power
Modulation method
Noise and harmonic
Residual Radiation
Modulation distortion
Maximum deviation
RT628
FRS
22
12.5KHz
3.6V
±2.5ppm
-20℃~50℃
50Ω
160*55*28mm
90g
0.5W
11kΦF3E
<-40dB
≤-35dB
≤7%
≤±5KHz
TRANSMITER
The sensitivity
Modulation receiver bandwidth
Adjacent selective
Intermodulation interference resistance
Spurious response inhibition
Audio output power
Audio distortion
≤0.2uV
±5KHz
≥40dB
≥35dB
≥70dB
≥300mW
≤8%
RECEIVER

2
Note: Remove the batteries before storing your radio
for extended periods of time. Batteries corrode
over time and may cause permanent damage to
your radio.
Turning Your Radio On and Off
After you installed batteries turn the radio on, the radio
chirps and the display briefly shows all feature icons
available on your radio. The display then scrolls through
the available channels and Interference Eliminator
Codes. Press and hold button turn the radio off.
Setting the Volume
- Press the up button to increase the speaker volume.
- Press the down button to decrease the speaker
volume.
- The speaker volume level is indicated by the number
1-8 displayed.
Setting a Channel
1. With the radio on, press , the current channel
flashes.
2. Press up or down button to set the channel.
3. Press PTT to confirm and save the channel setting.
Control Buttons
Use / to:
• Turn radio on/off
• Scan
Use UP/DOWN to:
• Adjust volume
• Scroll through menus
Installing the AA Batteries
Your radio uses 3 AA Alkaline batteries.
1. With the back of the radio facing you, there are a
secret button to release the battery cover and remove.
2. Install 3 AA Alkaline batteries as shown on the inside
of the battery compartment.
3. Re-cover the battery cover and press down to secure.
The walkie talkie can use a NiMH rechargeable battery
instead of 3 AA Alkaline batteries.
Battery Meter
The battery icon shows the battery charge level,
from full to empty . When the battery is empty, the
radio chirps periodically after releasing . The radio
powers off when the voltage drops below a predeterm-
ined level to protect the rechargeable battery life.
Getting Started
MENU
Product Features
Channel
1
2
3
4
5
6
7
8
9
10
11
Frequency
462.5625
462.5875
462.6125
462.6375
462.6625
462.6875
462.7125
467.5625
467.5875
467.6125
467.6375
Channel
12
13
14
15
16
17
18
19
20
21
22
Frequency
467.6625
467.6875
467.7125
462.5500
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250

3
by providing you a choice of code combinations. To set
the code for a channel:
1. Press twice, then the code starts to flash.
2. Press UP or DOWN to select the code 0-121 or 121-0.
3. Press PTT to save the code setting.
You can set a different code for each channel using
this procedure.
Note: You must set the Interference Eliminator Code to
0 if you want to communicate with another radio
which didn’t set up the Interference Eliminator
Code.
Push to Talk Timeout Timer
To prevent accidental transmissions and save battery
life, the radio emits a continuous warning tone and
stops transmitting if you press PTT for 180 continuous
seconds.
Locking the Keypad
To avoid accidentally changing your radio settings,
press and hold for 3 seconds or until displays.
You can turn the radio on and off, adjust the volume,
receive, transmit, send a call tone, and monitor
channels. All other functions are locked.
To unlock the radio, press and hold for 3 seconds
or until is no longer displayed.
Scanning Channels
Use scanning to monitor channels for transmissions or
to find someone in your group who has accidentally
changed channels. To start scanning, briefly press and
release . The scan indicator displays. When
the radio detects channel activity, it stops scanning
Special Features
MENU
Use ♪/MON to:
• Transmit call tone
Use to:
• Select menu options
• Exit the menu (when pressed while in a menu)
• Lock and unlock the keypad (when held down and
not in a menu)
Use to:
• Talk
• Save a setting
Talking and Listening
To communicate, all radios in your group must be set
to the same channel and Interference Eliminator Code.
To talk, press and hold PTT. Hold the radio 2 to 3
inches away from your mouth when speaking.
When you finished speaking, release PTT (press to
talk, release to listen)
Checking the Channel Before Transmitting
Your radio has 22 channels shared on a “take turn”
basis. For uninterrupted communication, do not talk on
a channel if someone else is currently talking on it.
To check for activity on a channel before you talk,
press and hold ♪/MON. If you hear static, the channel
is clear to use.
Interference Eliminator Code
Interference Eliminator Codes help minimize interference
MENU
MENU
MENU

4
and you can hear the transmission. To respond to the
transmission, press PTT within 5 seconds,the channel
will be confirmed
Scan Advance
If the radio stops scanning on a channel you do not
want to listen to, briefly press and release or to resume
scanning for the next active channel.
Removing Channels from the Scan List (Nuisance
Delete Feature)
To remove a channel so the radio does not stop on it
while scanning, press and hold UP or DOWN for at
least 3 seconds, then release. This channel temporarily
removes the channel from the scan list.
To restore the channel, turn the radio off and then back
on.
Note: You cannot remove the channel of your radio
setting when you started the scan (called your
home channel)
Setting and Transmitting Call Tones
Your radio can transmit different call tones to other
radios in your group so you can alert them that you
want to talk.
To set a call tone:
1. With the radio on, press 3 times. The current call
tone setting flashes displays.
2. Press UP or DOWN to change and hear the call tone.
3. Press or to set the new call tone.
To transmit your call tone to other radio , you need to
set to the same channel and Interference Eliminator
Code as your radio, then press ♪ .
Note: Setting the call tone to 0 disables the call tone
feature.
Voice Activation (VOX)
Voice activation (VOX) allows you to talk hands-free.
1.Press PTT and , then turn on the radio
2. When Turn the radio on. displays.
3. To transmit, speak into microphone. There is a short
delay between the time you start talking and when
the radio transmits.
4. To receive, stop talking.
To turn VOX off, press PTT.
Setting the Sensitivity Level
Adjusting your radio’s sensitivity level helps minimize
the possibility of unintended noises triggering a
transmission and helps the radio pick up soft voice.
1. Press until displays.
2. Press UP or DOWN to select the sensitivity level:
3 = High Sensitivity
for quiet environments
2 = Medium Sensitivity
for most environments
3 = Low Sensitivity
for noisy environments
Setting the double channel monitor
1. Press five times until CH displays, the current
channel flashes.
2. Press UP or DOWN to set the monitor channel.
3. Press PTT to save the double channel monitor
setting.
4. Then the double channel will flash.
MENU
MENU
MENU
MENU

Setting the SQUELCH Level 1-6
1. Press six times or until SL displays.
2. Press UP or DOWN to select the receive sensitivity
level.
01 = High receive Sensitivity
02~05 = Medium receive Sensitivity
06 = Low receive Sensitivity
Setting the TX POWER LO/HI
1. Press seven times until pr displays.
2. Press UP or DOWN to select the LO or HI level.
3. Press PTT to save the TX POWER LO/HI setting.
Important Information on Safe and Efficient
Operation Read. This Information Before Using
Your Radio
The information provided in this document supersedes
the general safety information contained in user guides
published prior to July 2000.
Transmit and Receive Procedure
Your two-way radio contains a transmitter and a
receiver. To control your exposure and ensure
compliance with the general population/uncontrolled
environment exposure limits, always adhere to the
following procedure:
• Transmit no more than 50% of the time.
• To transmit (talk), press the Push to Talk (PTT) button.
• To receive calls, release the PTT button.
Transmit no more than 50% of the time, or less, is
important because the radio generates measurable RF
energy exposure only when transmitting (in terms of
measuring standards compliance).
Exposure to Radio Frequency Energy
Your radio is designed to comply with the following
national and international standards and guidelines
regarding exposure of human being to radio frequency
electromagnetic energy:
Two-Way Radio Operation
When using your radio as a traditional two-way radio,
hold the radio in a vertical position with the microphone
one to two inches (2.5 to 5cm) away from the lips.
Facilities
To avoid electromagnetic interference and/or
compatibility conflicts, turn off your radio in any facility
where posted notices instruct you to do so.
Hospitals or health care facilities may be using
equipment that is sensitive to external RF energy.
Aircraft
When instructed to do so, turn off your radio when on
board an aircraft. Any use of a radio must be in
accordance with applicable regulations per airline crew
instructions.
Potentially Explosive Atmospheres
Turn off your radio prior to entering any area with a
potentially explosive atmosphere. Do not remove,
install, or charge batteries in such areas. Sparks in a
potentially explosive atmosphere can cause an
explosion or fire resulting in bodily injury or even death.
Note: The areas with potentially explosive atmosphere
5
Safety and General Information
MENU
MENU

referred to above include fueling areas such as
below decks on boats, fuel or chemical transfer
or storage facilities, areas where the air contains
chemicals or praticles, such as grain, dust or
metal powders, and any other area where you
would normally be advised to turn off your
vehicle engine. Areas with potentially explosive
atmospheres are often but not always posted.
Antennas
Do not use any portable radio that has a damaged
antenna.
If a damaged antenna comes into contact with your
skin, a minor burn can result.
Batteries
All batteries can cause property damage and/or bodily
injury such as burns if a conductive material such as
jewelry, keys, or beaded chain touch exposed terminals.
The conductive material may complete an electrical
circuit (short circuit) and become quite hot. Exercise
care in handling any charged battery, particularly when
placing it inside a pocket, purse, or other container with
metal objects.
- Battery Charger Safety Instructions
1. Do not expose the charger to rain or snow.
2. Do not operate or disassemble the charger if it has
received a sharp blow, or has been dropped or
damaged in any way.
3. Never alter the AC cord or plug provided with the
6
Operational Cautions
unit. If the plug will not fit the connector, have the
proper connector installed by a qualified electrician.
An improper condition can result in a risk of electric
shock.
4. To reduce the risk of damage to the cord or plug,
pull the plug rather than the cord when disconnecting
the charger from the AC receptacle.
5. To reduce the risk of electric shock, unplug the
charger from the connector before attempting any
maintenance or cleaning.
6. Use of an attachment which not recommended, may
result in a risk of fire, electric shock, or personal injury.
7. Make sure the cord is located where it will not be
stepped on, tripped over, or subjected to damage or
stress.
8. An extension cord should not be used unless
absolutely necessary. Use of an improper extension
cord could result in a risk of fire and/or electric shock.
If an extension cord must be used, make sure that:
• The pins on the plug of the extension cord are the
same number, size, and shape as those on the
plug of the charger.
• The extension cord is properly wired and in good
electrical condition.
• The cord size is 18 AWG for lengths up to 100 feet,
and 16 AWG for lengths up to 150 feet.
Remarks:
1. This guarantee card should be kept by the user, no
replacement if lost.
2. Most new products carry a two-year manufacturer’s
Annex I

7
warranty from the date of purchase. Further details,
pls read http://www.retevis.com/after-sale/
3. The user can get warranty and after-sales service
as below:
• Contact the seller where you buy.
• Products Repaired by Our Local Repair Center
4. For warranty service, you will need to provide a
receipt proof of purchase from the actual seller for
verification
Exclusions from Warranty Coverage:
1. To any product damaged by accident.
2. In the event of misuse or abuse of the product or as
a result of unauthorized alterations or repairs.
3. If the serial number has been altered, defaced, or
removed.
Model Number:
Serial Number:
Purchasing Date:
Dealer:
Telephone:
User’s Name:
Telephone:
Country:
Address:
Post Code:
Email:
Guarantee
RF ENERGY EXPOSURE AND PRODUCT SAFETY
GUIDE FOR PORTABLE WALKIE TALKIE
This walkie talkie uses electromagnetic energy in the
radio frequency (RF) spectrum to provide communicati-
ons between two or more users over a distance. It uses
radio frequency (RF) energy or radio waves to send
and receive calls. RF energy is one form of electroma-
gnetic energy. Other forms include, but are not limited
to, sunlight and x-rays. RF energy, however, should not
be confused with these other forms of electromagnetic
energy, which when used improperly, can cause
biological damage. Very high levels of x-rays, for
example, can damage tissues and genetic material.
Experts in science, engineering, medicine, health, and
industry work with organizations to develop standards
for safe exposure to RF energy. These standards
provide recommended levels of RF exposure for both
workers and the general public. These recommended
RF exposure levels include substantial margins of
protection.
All Retevis walkie talkie are designed, manufactured,
and tested to ensure they meet government-established
Warnings
ATTENTION!
Before using this radio, read this guide which
contains important operating instructions for
safe usage and RF energy awareness and
control for compliance with applicable stan-
dards and regulations.

8
RF exposure levels. In addition, manufacturers also
recommend specific operating instructions to users of
walkie talkie. These instructions are important because
they inform users about RF energy exposure and
provide simple procedures on how to control it.
Please refer to the following websites for more
information on what RF energy exposure is and how
to control your exposure to assure compliance with
established RF exposure limits: http://www.who.int/en
Local Government Regulations
When walkie talkie are used as a consequence of em-
ployment, the Local Government Regulations requires
users to be fully aware of and able to control their
exposure to meet occupational requirements. Exposure
awareness can be facilitated by the use of a product
label directing users to specific user awareness
information. Your Retevis walkie talkie has a RF
Exposure Product Label. Also, your Retevis user
manual, or separate safety booklet includes information
and operating instructions required to control your RF
exposure and to satisfy compliance requirements.
Radio License
Governments keep the radios in classification, most
of the classified walkie-talkie need to get local
government License, and operation is allowed. The
detailed classification and the use of your two radios,
please contact the local government radio management
departments. For the following specified classification:
the USA FRS, Australian CB, the individual license is
not required.
Compliance with RF Exposure Standards (If
appropriate, Reference to the actual product’s
Safety Marking)
Your Retevis walkie talkie is designed and tested to
comply with a number of national and International
standards and guidelines (listed below) for human
exposure to radio frequency electro-magnetic energy.
FCC ID
The FCCID means: This radio complies with the IEEE
(FCC) and ICNIRP exposure limits for occupational
/controlled RF exposure environments at operating
duty factors of up to 50% talk-50% listen and is
approved for occupational use only.
IC ID
This device complies with Industry Canada
license-exempt RSS standard(s). Operation is subject
to the following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including
interference that may cause undesired operation of
the device.
In terms of measuring RF energy for compliance with
these exposure guidelines, your radio generates
measurable RF energy only while it is transmitting
(during talking), not when it is receiving (listening) or
in standby mode.
Note: The approved batteries, supplied with this radio,
are rated for a 5-5-90 duty factor (5% talk-5%
listen-90% standby) even though this radio
complies with FCC occupational exposure limits
and may operate at duty factors of up to 50% talk.

9
RF energy exposure standards and guidelines (if
appropriate)
Your Retevis walkie talkie complies with the following
RF energy exposure standards and guidelines:
• United States Federal Communications Commission
(FCC), Code of Federal Regulations; 47 CFR part 2
sub-part J.
• American National Standards Institute (ANSI) /
Institute of Electrical & Electronic Engineers (IEEE)
C95. 1-2005
• IEEE Std. 1528:2013 and KDB447498, Evaluating
Compliance with FCC Guidelines for Human Exposure
to Radio Frequency Electromagnetic Fields.
• Institute of Electrical and Electronic Engineers
(IEEE) C95.3-2002
• International Commission on Non-Ionizing Radiation
Protection (ICNIRP)
• Ministry of Health (Canada) Safety Code 6 & Industry
Canada RSS-102.
• International Electrotechnical Com-mission
IEC62209-2:2010]
RF Exposure Compliance and Control Guidelines
and Operating Instructions
To control your exposure and ensure compliance with
the occupational/controlled environment exposure limits,
always adhere to the following procedures.
Guidelines:
• User awareness instructions should accompany the
device when transferred to other users.
• Do not use this device if the operational requirements
described herein are not met.
Operating Instructions:
• Transmit no more than the rated duty factor of 50%
of the time. To Transmit (Talk), push the Push To Talk
(PTT) button. To receive calls (listen), release the
PTT button. Transmitting 50% of the time, or less, is
important because the radio generates measurable
RF energy exposure only when transmitting in terms
of measuring for standards compliance.
• Transmit only when people outside the vehicle are at
least the recommended minimum lateral distance
away from a properly installed according to installation
instructions, externally mounted antenna.
• When operating in front of the face, worn on the body,
always place the radio in a Retevis approved clip,
holder, holster, case, or body harness for this product.
Using approved body-worn accessories is important
because the use of Non-Retevis approved accessories
may result in exposure levels, which exceed the IEEE
/ICNIRP occupational/controlled environment RF
exposure limits.
• If you are not using a body worn accessory and are
not using the radio in the intended use position, in
front of the face or at the body in the PTT mode or
alongside of the head in the phone mode, then ensure
the antenna and the radio are kept 2.5 cm (one inch)
from the body when transmitting. Keeping the radio at
a proper distance is important because RF exposures
decrease with increasing distance from the antenna.
Hand-held Mode
• Hold the radio in a vertical position with
the microphone (and other parts of the
radio including the antenna) atleast 2.5cm

10
To avoid electromagnetic interference and/
or compatibility conflicts
• Turn off your radio in any facility where posted
notices instruct you to do so, hospitals or health
care facilities (Pacemakers, Hearing Aids and
Other Medical Devices) may be using equip-
ment that is sensitive to external RF energy.
• Turn off your radio when on board an aircraft.
Any use of a radio must be in accordance
with applicable regulations per airline crew
instructions.
Note:
- Pacemakers
Defibrillators or other Implanted Medical
Devices Persons with pacemakers, Implantable
Cardioverter-Defibrillators (ICDs) or other active
implantable medical devices (AIMD) should:
• ALWAYS keep the radio more than 15cm from
their pacemaker when the radio is turned on.
• Consult with their physicians regarding the
potential risk of interference from radio
frequency transmitters, such as portable
radios (poorly shielded medical devices may
be more susceptible to interference).
• Turn the radio OFF immediately if they have
any reason to suspect that interference is
taking place.
• Do not carry the radio in a chest pocket or
near the implantation site, and carry or use
the radio on the opposite side of their body
from the implantable device to minimize the
potential for interference.
(one inch) away from the nose or lips.
The antenna should be kept away from the eyes.
Keeping the radio at a proper distance is important
as RF exposure decreases with increasing distance
from the antenna.
Phone Mode
• When placing or receiving a phone call, hold your
radio product as you would a wireless telephone.
Speak directly into the microphone.
Electromagnetic Interference/Compatibility
Note: Nearly every electronic device is susceptible to
electromagnetic interference (EMI) if inadequately
shielded, designed, or otherwise configured for
electromagnetic compatibility.
WARNING
Avoid Burns
Small Parts. Not for children under 3 years.
Turn off your radio power in the following
conditions:
• Turn off your radio before removing (installing)
a battery or accessory or when charging
battery.
• Turn off your radio when you are in a
potentially hazardous environments: Near
electrical blasting caps, in a blasting area,
in explosive atmospheres (inflammable gas,
dust particles, metallic powders, grain powders,
etc.).
• Turn off your radio while taking on fuel or
while parked at gasoline service stations.

11
WARNING
Avoid Burns
- Forbid
• Do not use charger outdoors or in moist envi-
ronments, use only in dry locations/conditions.
• Do not disassemble the charger, that may
result in risk of electrical shock or fire.
• Do not operate the charger if it has been
broken or damaged in any way.
• Do not place a portable radio in the area over
an air bag or in the air bag deployment area.
The radio may be propelled with great force
and cause serious injury to occupants of the
vehicle when the air bag inflates.
- To reduce risk
• Pull by the plug rather than the cord when
disconnecting the charger.
• Unplug the charger from the AC outlet before
attempting any maintenance or cleaning.
• Contact Retevis for assistance regarding
repairs and service.
- Use of Communication Devices While
Driving
• Always check the laws and regulations on the
use of radios in the countries and areas where
you drive.
• Give your full attention to driving and to the
road.
• If available, use the hands-free facility.
• If driving conditions or regulations require it,
pull off the road and park before making or
answering a call.
WARNING
- Hearing Aids
Some digital wireless radios may interfere with
some hearing aids. In the event of such interf-
erence, you may want to consult your hearing
aid manufacturer to discuss alternatives.
- Other Medical Devices
If you use any other personal medical device,
consult the manufacturer of your device to
determine if it is adequately shielded from RF
energy. Your physician may be able to assist
you in obtaining this information.
Protect your hearing:
• Use the lowest volume necessary to do your
job.
• Turn up the volume only if you are in noisy
surroundings.
• Turn down the volume before adding headset
or earpiece.
• Limit the amount of time you use headsets or
earpieces at high volume.
• When using the radio without a headset or
earpiece, do not place the radio's speaker
directly against your ear.
Note: Exposure to loud noises from any source
for extended periods of time may temporarily
or permanently affect your hearing. The louder
the radio's volume, the less time is required
before your hearing could be affected. Hearing
damage from loud noise is sometimes undete-
ctable at first and can have a cumulative effect.

12
WARNING
Approved Accessories
• This radio meets the RF exposure guidelines
when used with the Retevis accessories
supplied or designated for the product.
Use of other accessories may not ensure
compliance with the RF exposure guidelines
and may violate regulations.
• For a list of Retevis-approved accessories for
your radio model, visit the following website:
http://www.Retevis.com

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