Retevis RT649B User manual

RT649B
EN DE FR IT ES RU

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CONTENTS
CONTROL BUTTONS·····························································
DISPLAY SCREEN GUIDE·······················································
GETTING STARTED·······························································
TALKING AND LISTENING······················································
MENU OPTIONS····································································
SPECIAL FEATURES······························································
CHANNEL AND FREQUENCIES···············································
SPECIFICATIONS···································································
WARNING·············································································
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CONTROL BUTTONS
Screen
Push-to-Talk
Power On / O󰀨
Call Tone
Lamp On / O󰀨
Speaker
Accessary Port
Lamp
Micro-USB
Charging Port
Lock Menu
Monitor Scan
Microphone
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Installing the Three AA NiMH Rechargeable Battery
1. Take the belt clip o󰀨.
2. With the back of the radio facing you, lift the battery cover latch up and remove the cover.
3. Insert the three AA NiMH battery with + and – polarity as shown inside.
4. Close the battery cover rmly.
Radio Battery Meter
The number of bars ( ) on the radio battery icon shown indicates the charge remaining in the battery. When the
radio battery meter shows one segments, the radio chirps periodically (Low Battery Alert). In battery low status, the
radio will sound the alert every 10 minutes or after releasing the PTT button.
Note: Remove the battery from radio for storage purposes.
GETTING STARTED
DISPLAY SCREEN GUIDE
Number s of Channe l
Call Tone
Number s for
Codes
VOX
Dual Watch
Volume Mute
Battery Meter
Status
(transmit/receive)
Lock
Scan

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Removing the Three AA NiMH Rechargeable Battery
1. Turn the radio o󰀨.
2. With the back of the radio facing you, lift the battery cover latch up and remove the cover.
3. Close the battery cover rmly.
Note:
• Be careful when removing NiMH batteries. Do not use sharp or conductive tools to remove either of these batteries.
• Remove the batteries before storing your radio for extended periods of time. Batteries corrode over time and may
cause permanent damage to your radio.
• Do not mix old and new batteries and Do not mix alkaline, standard (carbon-zinc) or rechargeable (ni-cad, ni-mh,
etc.) batteries.
Battery Capacity Maintenance
1. Charge the NiMH batteries once every 3 months when not in use.
2. Before placing the radio in storage, remove the battery.
3. Store the NiMH batteries in temperature between -20 °C to 35 °C and in low humidity. Avoid damp
conditions and corrosive materials.
Using the Micro-USB Charger
The micro-USB charger is a handy port that allows you to conveniently charge your NiMH battery. Use
certied adaptor(5V, ≥1A). Do not attempt to charge alkaline batteries.
1. Make sure your radio is turned OFF.
2. Plug the micro-USB cable into the micro-USB charging port on your radio. Connect the other end of the
micro-USB charger to wall power outlet.
3. The battery meter on LCD will move to indicate the battery is charging.
Note:
It is recommended to power OFF your radio while charging.
When moving between hot and cold temperatures, do not charge the NiMH batteries until the battery
temperature acclimates (usually about 20 minutes).
For optimal battery life, remove the radio from the charger within 16 hours. Do not store the radio while
connected to the charger.
Turning your Radio On and O󰀨
1. Press and hold on the button to turn your radio ON/OFF. In the ON position, the radio chirps and briey
shows all feature icons available on the radio.

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To communicate, all radios in your group must be set to the same channel and Interference Eliminator Code.
1. To talk, press and hold the PTT button. When transmitting, the icon is shown.
2. When you are nished talking, release the PTT button.
3. When receiving, the icon is shown.
For maximum clarity, hold the radio 2 to 3 centimeters away from your mouth and speak directly into the
microphone. Do not cover the microphone while talking.
Talk Range
Your radio is designed to maximize performance and improve transmission range. Do not use the radios closer
than ve feet apart.
Monitor Button
Press and hold button for 3 seconds to enter monitor mode and listen for weak signals on the current channel. You
can also listen to the volume level of the radio when you are not receiving. This allows you to adjust the volume, if
necessary. You can also press button to check for activity on the current channel before you talk.
Push-to-Talk Timeout Timer
To prevent accidental transmissions and save battery life, radio will stop transmitting if you press PTT button for
60 seconds continuously.
2. The display screen then shows the current channel, code and all features that are enabled. The radio is in
Two-Way mode.
Setting the Volume
Press and hold button for three seconds to listen to volume level.
1. First press either or to trigger volume change. You will see current volume level on screen.
2. Press to increase the volume. Press to decrease the volume.
3. When the volume reached level 0 the mute icon appears permanently on screen.
Do not hold the radio close to your ear. If the volume is set to an uncomfortable level, it could hurt your ear.
TALKING AND LISTENING

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Selecting the Channel
The channel is the frequency of the radio uses to transmit.
1. Press the button until the channel number starts to ash.
2. Press or button to change the channel number.
3. Press the PTT button to exit menu or button to continue setup.
Selecting the Interference Eliminator Code
Sub-Codes help minimize interference by blocking transmission from unknown sources. Your radio has 121 Sub-
Codes.
To set the code for a channel:
1. Press the button until the code number starts to ash.
2. Press or button to select code number.
3. Press the PTT button to exit menu or button to continue setup.
Setting and Transmitting Call Tones
Your radio can transmit di󰀨erent call tones to other radios in your group when you pressed button. The radio
has 10 call tones.
To set a call tone:
1. Press button until call tone 'CA' appears. The current call tone setting ash.
2. Press or button to change and listen to the call tone.
3. Press the PTT button to exit menu or button to continue setup.
Voice Operated Transmission (VOX)
Transmission is initiated by speaking into the microphone of the radio instead of pushing the PTT button.
1. To activate VOX, press button until 'VOX' appears on the display. The current setting (0, 1-3) will ash.
2. Press or button to select the sensitivity level.
3. Press the PTT button to exit menu.
MENU OPTIONS
L3=High Sensitivity for quiet environments
L2=Medium Sensitivity for most environments
L1=Low Sensitivity for noisy environments
L0=Turn O󰀨 VOX function

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Dual Channel Monitor
Enable you to scan current channel and another channel alternately.
To set another channel and start Dual Watch.
1. Press button until '2CH' appears on the display. The current setting (OF, 1-16) will ash.
2. Press or to select channels.
3. Press the PTT button to exit menu or button to continue setup.
4. Press the PTT button or wait until the time out menu to activate Dual Watch. The screen will alternate
between Home Channel and Dual Watch Channel.To end Dual Watch mode, re-enter Dual Watch menu to
select the OFF setting.
Note: If you set the same channel and code as current channel, Dual Watch does not work.
Keypad Tones
Your radio emits a beep each time one of the buttons is pressed (except the PTT and button).
Press and hold the button while turning the radio ON to switch the keypad tone ON/OFF.
Roger Tone
You can set your radio to transmit a unique tone when you nish transmitting.
Press and hold the button while turning the radio ON to turn the Roger Beep ON. Repeat the step to turn
Roger Beep OFF.
Keypad Lock
To avoid accidentally changing your radio settings:
1. To lock the radio, press and hold button until the key lock indicator icon on display appear.
2. To unlock the radio, press and hold button until key lock indicator icon on display disappear.
Scanning Channels
Use scan to search all channels for transmissions from unknown parties, to nd someone in your group who has
accidentally changed channels or to quickly nd unused channels for your own use.
To Start Scanning:
1. Briey press the button, the icon will appear in the display and the radio will begin to scroll through
the channel and code combinations.
2. When the radio detects channel activity matching the channel and code combination, it stops scrolling and you can
SPECIAL FEATURES

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hear the transmission.
3. To respond and talk to the person transmitting, press the PTT button within 5 seconds after the end of the
transmission.
4. The radio will resume scrolling through the channels ve seconds after the end of any received activity.
5. To stop scanning, briey press the button.
Scanning Notes:
1. If you press the PTT button while the radio is scrolling through inactive channels, the transmission will be on
the” home channel”. Scanning will resume 5 seconds after the end of your transmission. You may press the
button to stop scanning at any time.
2. If the radio stops on an undesired transmission, you may immediately resume the scan by briey pressing
or button.
3. If the radio repeatedly stops on an undesired transmission, you may temporarily remove that channel from the
scan list by pressing and holding or for 3 seconds. You may remove more than one channel in this
way.
4. To restore the removed channel(s) to the scan list, turn the radio o󰀨 and then turn back on, or exit and re-enter
the scanning mode by pressing button.
5. You cannot remove the home channel from the scan list.
LED Lamp
Your radio has a built-in-LED Lamp.
Briey press the button once to ON the lamp, press again to OFF the lamp.
Automatic Power Save
For better battery life, your radio is designed to switch to Power Save mode when it has been no transmissions
after 5 seconds. The radio can receive transmissions in this mode.

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CHANNEL AND FREQUENCIES
SPECIFICATIONS
Channe Frequency
(MHz) Max Power Output Channe Frequency
(MHz) Max Power Output
1 446.00625 0.5w 9 446.10625 0.5w
2 446.01875 0.5w 10 446.11875 0.5w
3 446.03125 0.5w 11 446.13125 0.5w
4 446.04375 0.5w 12 446.14375 0.5w
5 446.05625 0.5w 13 446.15625 0.5w
6 446.06875 0.5w 14 446.16875 0.5w
7 446.08125 0.5w 15 446.18125 0.5w
8 446.09375 0.5w 16 446.19375 0.5w
Note:
*Channels 9 to 16 should only be used in countries where these frequencies are allowed by government
authorities. Channels 9 to 16 are not allowed in Russia.
Frequency Range
Memory Channel
Operation Voltage
Battery Capacity
Operating Temperature
Antenna Impedance
General
Receive Sensitivity
Adjacent Channel Selectivity
Inter Modulation and Rejection
Rated Audio Power Output
Rated Audio Distortion
Receive Current
Receiver
RF Output Power
Spurious Emission
Transmission current
Transmitter

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RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE FOR PORTABLE TWO-WAY
RADIOS
This two-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide communications
between two or more users over a distance. RF energy, which when used improperly, can cause biological damage.
All Retevis two-way radios are designed, manufactured, and tested to ensure they meet government-established RF
exposure levels. In addition, manufacturers also recommend specific operating instructions to users of two-way radios.
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 two-way radios are used as a consequence of employment, 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
two-way radio 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, business two-way radios operate on radio frequencies that are
regulated by the local radio management departments (FCC, ISED, OFCOM, ANFR, BFTK, Bundesnetzagentur...).
To transmit on these frequencies, you are required to have a license issued by them. The detailed classification and
the use of your two radios, please contact the local government radio management departments.
Use of this radio outside the country where it was intended to be distributed is subject to government regulations and
may be prohibited.
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 standards and regulations.

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Unauthorized modification and adjustment
Changes or modifications not expressly approved by the party responsible for compliance may void the user’s authority
granted by the local government radio management departments to operate this radio and should not be made. To
comply with the corresponding requirements, transmitter adjustments should be made only by or under the supervision
of a person certified as technically qualified to perform transmitter maintenance and repairs in the private land mobile
and fixed services as certified by an organization representative of the user of those services.
Replacement of any transmitter component (crystal, semiconductor, etc.) not authorized by the local government radio
management departments equipment authorization for this radio could violate the rules.
FCC Requirements:
This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not
cause harmful interference. (Licensed radios are applicable);
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (Other
devices are applicable)
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE:
• This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
• 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 against 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. If 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.

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CE Requirements:
• (Simple EU declaration of conformity) Shenzhen Retevis Technology Co., Ltd. declares that the radio equipment type
is in compliance with the essential requirements and other relevant provisions of RED Directive 2014/53/EU and the
ROHS Directive 2011/65/EU and the WEEE Directive 2012/19/EU; the full text of the EU declaration of conformity is
available at the following internet address: www.retevis.com.
• Restriction Information
This product can be used in EU countries and regions, including: Belgium (BE), Bulgaria (BG), Czech Republic (CZ),
Denmark (DK), Germany (DE), Estonia (EE), Ireland (IE), Greece (EL), Spain (ES), France (FR), Croatia (HR), Italy
(IT), Cyprus (CY), Latvia (LV), Lithuania (LT), Luxembourg (LU), Hungary (HU), Malta (MT), Netherlands (NL), Austria
(AT), Poland (PL), Portugal (PT), Romania (RO), Slovenia (SI), Slovakia (SK), Finland (FI), Sweden (SE) and United
Kingdom (UK).
For the warning information of the frequency restriction, please refer to the package or manual section.
• Disposal
The crossed-out wheeled-bin symbol on your product, literature, or packaging reminds you that in the
European Union, all electrical and electronic products, batteries, and accumulators (rechargeable
batteries) must be taken to designated collection locations at the end of their working life. Do not
dispose of these products as unsorted municipal waste. Dispose of them according to the laws in your
area.
IC Requirements:
Licence-exempt radio apparatus
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage;
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d’en compromettre le fonctionnement.
RF Exposure Information
• DO NOT operate the radio without a proper antenna attached, as this may damage the radio and may also cause

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you to exceed RF exposure limits. A proper antenna is the antenna supplied with this radio by the manufacturer or an
antenna specifically authorized by the manufacturer for use with this radio, and the antenna gain shall not exceed the
specified gain by the manufacturer declared.
• DO NOT transmit for more than 50% of total radio use time, more than 50% of the time can cause RF exposure
compliance requirements to be exceeded.
• During transmissions, your radio generates RF energy that can possibly cause interference with other devices or
systems. To avoid such interference, turn off the radio in areas where signs are posted to do so.
• DO NOT operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospitals, aircraft,
and blasting sites.
• Portable Device, this transmitter may operate with the antenna(s) documented in this filing in Push-to-Talk and
body-worn configurations. RF exposure compliance is limited to the specific belt-clip and accessory configurations as
documented in this filing and the separation distance between user and the device or its antenna shall be at least
2.5 cm.
• Mobile Device, during operation, the separation distance between user and the antenna subjects to actual regulations,
this separation distance will ensure that there is sufficient distance from a properly installed externally-mounted
antenna to satisfy the RF exposure requirements.
• Occupational/Controlled Radio, this radio is designed for and classified as “Occupational/Controlled Use Only”,
meaning it must be used only during the course of employment by individuals aware of the hazards, and the ways to
minimize such hazards; NOT intended for use in a General population/uncontrolled environment.
• General population/uncontrolled Radio, this radio is designed for and classified as “General population/uncontrolled
Use”.
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

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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 RF
exposure limits.
Hand-held Mode
• Hold the radio in a vertical position with the microphone (and other parts of the radio including the
antenna) at least 2.5 cm (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.
Avoid Choking Hazard
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

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powders, grain powders, etc.).
• Turn off your radio while taking on fuel or while parked at gasoline service stations.
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 equipment 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.
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.
• Use careful with the earphone maybe possible excessive sound pressure from
earphones and headphones can cause hearing loss.
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 undetectable at
first and can have a cumulative effect.
Avoid Burns
Antennas
• Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into
contact with the skin when the radio is in use, a minor burn can result.
Batteries (If appropriate)
• When the conductive material such as jewelry, keys or chains touch exposed terminals of the
batteries, may complete an electrical circuit (short circuit the battery) and become hot to cause
bodily injury such as burns. Exercise care in handling any battery, particularly when placing it inside
a pocket, purse or other container with metal objects.

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Long transmission
• When the transceiver is used for long transmissions, the radiator and chassis will become hot.
Safety Operation
Forbid
• Do not use charger outdoors or in moist environments, 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.
• The adapter shall be installed near the equipment and shall be easily accessible
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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INHALT
SCHLÜSSELFUNKTIONEN·······················································
ANLEITUNG FÜR DISPLAY-BILDSCHIRM···································
LOSLEGEN············································································
SPRECHEN UND HÖREN·························································
MENÜPUNKTE·······································································
BESONDERE MERKMALE·······················································
KANAL UND FREQUENZEN·····················································
Technische Daten···································································
WARNUNG·············································································
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