Opus T2 User manual

OPUS™T2
Portable Two Way Radio
User Manual
www.opusradio.eu

2
Introduction
Thank you for purchasing this Opus two-way radio.
Opus products offer excellent value for money by
combining simple operation with advanced
technology, great design and manufacturing quality.
To ensure trouble-free operation, please take a few
moments to read this user manual and familiarise
yourself with the unit and the operating and charging
procedure.
Typical users can include retail stores, restaurants,
campuses and schools, construction sites, exhibitions
and trade fairs, property and hotel management,
training establishments and more.
Your Opus radios are the perfect communication
solution for many of today’s fast-paced industries.
If you have any questions please contact your
supplier or visit our website at www.opusradio.eu.

3
Contents
Safety Information............................................................................................ 4
Batteries & Chargers.................................................................................. 4
Radio Antenna .............................................................................................. 4
Use In Vehicles ............................................................................................. 5
Potentially Explosive Atmospheres ..................................................... 5
Blasting Caps and Hazardous Areas .................................................... 5
Radio Operation and EME Exposure ................................................... 5
Electromagnetic Interference ................................................................ 6
Use In Aircraft............................................................................................... 6
Pacemakers.................................................................................................... 6
Hearing Aids.................................................................................................. 6
Other Medical Devices.............................................................................. 7
User Safety..................................................................................................... 7
Declaration of Conformity....................................................................... 7
Using Your Radio............................................................................................... 8
Unpacking....................................................................................................... 8
Parts of the radio ......................................................................................... 8
Fitting the belt clip ...................................................................................... 9
Fitting the battery pack............................................................................. 9
Charging the battery pack......................................................................10
Operating time ...........................................................................................10
Charging procedure..................................................................................11
Communicating................................................................................................12
Switching the radio ON/OFF & adjusting the volume.................12
Selecting a channel....................................................................................12
Talking ...........................................................................................................12
LED status indicator.................................................................................13
Talk range.....................................................................................................13
Other Radio Functions..................................................................................14
Monitor .........................................................................................................14
Channel scan (446 version only)..........................................................14
Hands-free use/VOX................................................................................15
Channel annunciation..............................................................................15
Function button lock ................................................................................15
Radio reset ...................................................................................................15
Troubleshooting ..............................................................................................16
Specifications....................................................................................................18
Cleaning and General Care..........................................................................19
Warranty Information...................................................................................20

4
Safety Information
IMPORTANT –READ ALL INSTRUCTIONS carefully
and completely before operating your radio and
retain this manual for future reference. Failure to
observe the instructions could result in personal
injury, death, and/or damage to your radio,
accessories and/or other property.
Batteries & Chargers
This equipment contains a lithium-ion battery pack.
NEVER dispose of the lithium-ion battery in fire. An explosion may
result.
DO NOT short-circuit the battery pack.
DO NOT charge the lithium-ion battery in any other charger.
DO NOT operate the charger if it has been broken or damaged in
any way.
DO NOT disassemble the charger. It is not a user serviceable item.
ALWAYS dispose of lithium-ion batteries according to local
regulations.
ALWAYS switch the radio OFF when charging battery.
ONLY use approved accessories.
ONLY use the charger in dry locations. The charger is not suitable
for outdoor use.
Radio Antenna
DO NOT use any portable radio that has a damaged antenna. If a
damaged antenna comes into contact with the skin, a minor burn
may result.
DO NOT change or modify the antenna. Unauthorized antennas,
modifications, or attachments could damage the radio and violate
its compliance status.
DO NOT hold the antenna when the radio is in use. Holding the
antenna reduces talk range and may cause bodily harm.

5
Use In Vehicles
You must comply with local, regional and national laws and
regulations regarding the use of two way radio in vehicles at all
times.
DO NOT place your radio in the area adjacent to or in front of an
air bag or in the air bag deployment area.
Air bags inflate with great force. If a radio is placed in the air bag
deployment area and the air bag inflates, the radio may be
propelled with great force and cause serious injury to the
occupants of the vehicle.
Potentially Explosive Atmospheres
This radio is NOT Intrinsically Safe. Turn your radio OFF prior to
entering any area with a potentially explosive atmosphere.
Sparks in such areas could cause an explosion or fire resulting in
injury or even death.
Note: The areas with potentially explosive atmospheres are often,
but not always, marked. They will include fuelling areas such as
below decks on shops, fuel or chemical transfer or storage facilities,
areas where the air contains chemicals or particles, such as grain,
dust or metal powders, and any other area where you would
normally be advised to turn off your vehicle engine.
Blasting Caps and Hazardous Areas
To avoid possible interference with blasting operations, switch off
your radio when you are near electrical blasting caps or in a
“blasting area” or other area signposted: “Switch off two-way
radios”or similar. Obey all signs and instructions.
Radio Operation and EME Exposure
NEVER operate your radio with the antenna less than 5 cm from
your body and keep transmitting time minimal.
ALWAYS use the supplied belt clip if you wear a radio on your
body when transmitting.

6
Electromagnetic Interference
Nearly every electronic device is susceptible to electromagnetic
interference (EMI). To avoid the possibility of electromagnetic
interference and/or compatibility conflicts, switch off your radio in
any location where posted notices instruct you to do so, such as
health care facilities.
Use In Aircraft
When instructed to do so, switch OFFyour radio on board an
aircraft.
Any use of a radio must be in accordance with applicable
regulations and aircrew instructions.
Pacemakers
The Advanced Medical Technology Association recommends that
a minimum separation of 15 cm be maintained between a
handheld wireless radio and a pacemaker. These
recommendations are consistent with the independent research
by, and recommendations of, the U.S. Food and Drug
Administration.
Persons with pacemakers should:
Always keep the radio more than 15 cm from their pacemaker
when the radio is switched ON.
Do not carry the radio in the breast pocket.
Use the ear opposite the pacemaker to minimize the potential
for interference.
Turn the radio OFF immediately if there is any reason to
suspect that interference is taking place.
Hearing Aids
Some radios may interfere with hearing aids. In the event of such
interference, please consult your hearing aid manufacturer or
supplier to discuss alternatives.

7
Other Medical Devices
If you use any personal medical device, consult the manufacturer
of your device to determine that it is adequately shielded from RF
energy.
Your physician may be able to assist you in obtaining this
information.
User Safety
NEVER hold the radio so that the antenna is very close to, or
touching exposed parts of the body, especially the face or eyes,
while transmitting. The radio will perform best if the microphone is
held 5–10 cm from the lips and the radio is vertical.
NEVER operate the radio with a headset or other audio accessory
at a high volume level.
NEVER short the terminals of the battery pack.
NEVER use your radio outdoors during a thunderstorm.
DO NOT push the PTT button if you do not intend to transmit.
DO NOT modify the radio for any reason.
DO NOT use any non-approved battery packs or chargers.
AVOID storing or charging your radio in direct sunlight.
AVOID storing, using or charging your radio where temperatures
are below -20° C or above +60° C.
AVOID exposing the radio to heavy rain, and NEVER immerse it in
water. The radio construction is water resistant and NOT
waterproof (submersible).
DO keep the radio out of reach of babies and small children.
Changes or modifications to your radio that are not expressly
approved or authorised may void your authority to operate the
radio under relevant laws and regulations.
Declaration of Conformity
We hereby declare that the Opus T2 radio is compliant with the
essential requirements and other relevant provisions of Directive
1999/5/EC.

8
Using Your Radio
Unpacking
The following items are supplied with your radio. Please check
them carefully and notify your supplier immediately if any are
missing or damaged.
Opus T2 Radio & Antenna
Lithium-ion Battery Pack
AC Adaptor
Desktop Charger
Belt Clip & Screws
User Manual
Parts of the radio
2
1
3
4
6
5
89
10
11
7
1
Antenna (fixed)
6
Microphone
2
Channel Selector
7
Accessory Jack
3
Power On/Off & Volume
control
8
Battery Pack
9
Push-To-Talk (PTT) Button
4
LED Status Indicator
10
P1 Function Button [–]
5
Speaker
11
P2 Function Button [=]

9
Fitting the belt clip
Use the supplied screws to secure the belt clip to the battery pack.
Fitting the battery pack
1. Ensure that the radio is switched OFF.
2. Align the tabs at the bottom of the battery with the slots at
the bottom of the radio body.
3. Push the top of the battery firmly towards the body of the
radio until it ‘clicks’ into position.
To remove the battery pack:
1. Ensure that the radio is switched OFF.
2. Push down the battery retaining latch and lift the battery
away from the radio body.
Latch
Push until ‘click’
Slots
Tabs

10
Charging the battery pack
Your Opus T2 radio is supplied with a rechargeable lithium-ion
(Li-ion) battery pack.
This battery should be fully charged before first use to ensure
optimum capacity and performance.
The battery is designed specifically for use with the Opus T2 and
related charger. Do not use a battery or charger from a different
product.
For maximum flexibility, you can charge the battery separately or
whilst attached to the radio.
The supplied lithium-ion (Li-ion) battery can be safely re-charged
after only partial use. It is not necessary to fully discharge the
battery between charges.
Operating time
To extend the operating time (endurance) of your radio between
charges, your radio is equipped with a Battery Save feature which
is enabled by default.
The operating time you experience will vary based on your own
usage pattern.
The standard Opus T2 battery is designed to deliver at least 18
hours operation with a usage pattern of 5% transmit, 5% receive
and 90% standby.

11
Charging procedure
1. Place the Desktop Charger on a flat surface.
2. Connect the AC Adaptor lead to the Desktop Charger unit.
3. Plug the AC Adaptor into the mains supply (wall socket) and
switch on. The LED indicator on the Desktop Charger will
glow Red for 2 seconds.
4. If the battery is attached to the radio, ensure that the radio is
switched OFF.
5. Align the slots on the battery pack with the ridges in the
Desktop Charger and insert the radio/battery into the
Desktop Charger. The LED indicator on the Desktop Charger
will blink Red for a few seconds and then glow Red to show
that charging is in progress.
6. The approximate charging time for a flat battery is 4 hours.
7. When the LED indicator on the Desktop Charger glows
Green the battery is fully charged. Remove the battery/radio
from the Desktop Charger.
To conserve energy and reduce your environmental footprint
please disconnect the AC Adaptor from the mains supply when not
in use.
Desktop ChargerAC Adaptor
or

12
Communicating
Switching the radio ON/OFF & adjusting the volume
To switch the radio ON, rotate the On/Off/Volume control
clockwise. The radio will ‘click’ ON, emit a confirmation tone
sequence and announce the channel number.
The volume will increase as you rotate the On/Off/Volume control
clockwise. Rotating the control anti-clockwise will decrease the
volume.
To switch the radio OFF, rotate the On/Off/Volume control
anti-clockwise until the radio ‘clicks’ off.
Note: Exercise caution when adjusting the volume to avoid
damage to your hearing.
Selecting a channel
To select a channel, rotate the Channel Selector Knob until you
reach the required channel. A voice announces the selected
channel (if channel annunciation is enabled). All radios wishing to
communicate must use the same channel.
Talking
1. Switch on your radio. Adjust the volume and select the
required channel.
2. Monitor the channel for activity.
3. To send a message, hold the radio upright, approximately
5-10cm from your mouth. Press and hold the PTT button and
speak slowly and clearly into the microphone. Release the
PTT when you have finished your message.
4. Await a response to your message and then proceed on a
‘take-turns’ basis (only one user can talk at a time).
5. It is good radio etiquette to end each message with ‘over’ and
to end the entire communication with ‘out’.

13
LED status indicator
The status of your radio is shown via the LED Status Indicator.
LED Indicator
Radio Status
Red Heartbeat
Low Battery
Solid Red
Transmit (TX) (PRO version)
Solid Yellow
Transmit (TX) (446 version)
Solid Green
Receive (RX)
Green Heartbeat
Scanning activated
Double Yellow Heartbeats
VOX mode
Talk range
The Opus T2 has been designed to maximize performance and
provide the best transmission range.
The communication range of all radios is directly affected by the
terrain. The best performance will occur in open, flat areas, whilst
obstructions such as trees and buildings will progressively reduce
the effective range and increase interference.
Concrete structures, heavy foliage, metal buildings and operating
indoors or inside vehicles will have the worst effect on range.
Avoiding obstructions and maintaining a clear line of sight
between users will provide the most reliable communication.
Additional equipment may be required for reliable communication
in problem areas –contact your supplier for details.

14
Other Radio Functions
Monitor
It is courteous to monitor a channel for radio traffic before
communicating to avoid interfering with other users.
To monitor the channel (regardless of privacy code), press and
release the P1 side button. You will hear any weak radio signals
and ‘squelch noise’. Press P1 button again to switch off the
monitor mode.
If the channel is not in use proceed with your call
Channel scan (446 version only)
Scanning allows you to sequentially check other radio channels for
conversations. When activated, the radio automatically steps
through each channel position, pausing when a channel is in use.
This allows you to listen and communicate with users on that
channel without having to change channel manually.
Once the channel activity stops, the radio will pause for 5 seconds
before scanning resumes. If scanning has paused, simultaneous
transmissions on other channels will not be heard.
To start scanning press the P2 side button. The LED indicator
shows a green heartbeat.
To stop scanning, press the P2side button again.
If you press the PTT button while the radio is scanning, the radio
will transmit on the channel that is currently selected by the
channel control.
If you press the PTT button while the radio is paused, the radio will
transmit on the channel being received.
When scanning you may hear conversations that you wish to skip.
To temporarily remove a channel from the scanning cycle, wait for
the scanning to pause on the ‘nuisance’ channel and then press and
hold the P2 side button until the radio beeps once.
The channel will not be scanned again until you exit the Scan mode
or switch OFF your radio.

15
Hands-free use/VOX
Your Opus T2 can be used ‘hands-free’ without the need for
additional accessories.
To enable VOX (hands-free) mode, press and hold the PTT button
while switching the radio ON. The LED status indicator will show a
double yellow heartbeat whilst the VOX mode is active.
Speak clearly towards the radio to automatically activate the
transmit mode. To avoid accidental operation there is a brief pause
between the time you speak and the radio transmitting. The
sensitivity of the radio has been pre-set and you may need to
adjust the distance between the user and the radio to provide
optimal operation.
During VOX operation you should minimise background noise
since this may also activate the transmit mode.
VOX mode will be de-activated when you switch OFF your radio.
Channel annunciation
When switching ON your radio or changing the channel, the radio
will ‘announce’the selected channel number.
To adjust this setting, press and hold the P1 side button while
switching the radio ON. Repeating this process will cycle through
English, Silent (indicated by a beep) and Chinese announcements.
Function button lock
To lock/unlock the P1 and P2 side function buttons, switch ON
your radio and then press and hold both function buttons P1 and
P2 until the radio emits a beep. The radio will retain this setting
when switched ON/OFF.
Radio reset
To reset your radio simultaneously press and hold the PTT, P1 and
P2 side buttons and switch ON your radio. Release the buttons
when the radio emits a beep and the status LED glows yellow.

16
Troubleshooting
The following is a non-exhaustive list of possible faults and
remedies. Please check the website for further information and
advice.
If you continue to experience a problem please contact your
supplier.
Issue
Possible cause and solution
Radio won’t switch on
Check battery connection.
Recharge/replace the battery pack.
Operating temperature (high/low temperatures
will affect battery life).
Water damage.
Hearing other
conversations
Select a different channel.
Poor audio quality
Position radio correctly.
Check volume setting.
Recharge/replace the battery pack.
Check speaker and microphone for dirt or
debris/obstruction.
Check for nearby electrical interference.
Limited talk range
Reduce obstructions. Steel and/or concrete
structures, heavy foliage, buildings and vehicles
all decrease range. Try to minimise such
obstacles and achieve a clearer line of sight to
improve transmission.
Wearing radio close to body such as in a pocket
or on a belt decreases range.
Upgrade antenna (PRO version only)
Change location of other radio(s).
No transmit or receive
Check that all radios are using the same channel.
Make sure the PTT button is completely pressed
when talking and released when listening.
Check battery connection.
Recharge/replace the battery pack.
Check that the radio is not Scanning.

17
Heavy static or
interference
Radios are too close together –they must be at
least 2m apart.
Radios are out of range or obstacles are
interfering with transmission.
Nearby electronic devices may be causing
interference.
Low battery
Recharge/replace the battery pack.
Operating temperature (high/low temperatures
will affect battery life).
Battery is faulty or has reached end of life.
Possible charger fault.
Desktop Charger LED
does not blink and/or
battery does not
charge
Check that the radio/battery is properly
inserted.
Check the battery and charger contacts are
clean and dry.
Check that the AC outlet is switched on.
Check that the AC Adaptor and Desktop
Charger are connected correctly.
Battery or charger is faulty. Try a different
battery pack and charger combination (if
available) to determine which is faulty.
Cannot use VOX
VOX feature is not activated.
VOX sensitivity level is too low.
Audio accessory is not VOX compatible.
Audio accessory is faulty.
Note: If a radio feature does not correspond to the default values
or does not operate as expected, check with your supplier to see if
your radio has been pre-set with a different configuration.

18
Specifications
General
Frequency Range
PRO version: 403~470MHz
446 version: 446.00625~446.09375MHz
Channel Capacity
16 Channels
Channel Bandwidth
12.5kHz
Operating Voltage
7.4V DC
Dimensions (H x W x D)
130 x 53 x 32mm exc. antenna
Weight (with battery)
240g
Transmitter
RF Output power
PRO version: 4W/1W (High/Low)
446 version: 500mW
Frequency Stability
±1.5ppm
Spurious & Harmonics
-36dBm for f <1GHz,
-30dBm for f > 1GHz
FM Hum & Noise
45dB
Modulation Deviation
±2.5kHz
Adjacent Channel Power
70dB
Audio Frequency Response
+1 ~ -3dB (0.3 –3kHz)
Audio Distortion
< 3%
Receiver
Sensitivity (12 dB SINAD)
-122dBm (0.18μV)
Adjacent Channel Selectivity
70dB
Audio Distortion
< 5%
Radiated Spurious Emissions
< -54dBm
Intermodulation Rejection
70dB
Audio Output (8 Ω load)
750mW typ. (< 3% distortion)
All specifications are subject to change without notice.

19
Cleaning and General Care
To ensure years of trouble free operation care for your radio
properly and clean it regularly.
Follow these simple guidelines to keep your radio clean:
Use a soft damp cloth to clean the surface
and a soft brush to keep the speaker and
microphone free from dust and debris. Keep
the battery contacts clean.
Do not drop the unit into water or
submerge.
Do not use alcohol based cleaning solutions
or other cleaning liquids.
If the radio is accidentally submerged in water:
Turn the radio OFF and remove the battery
pack immediately.
Dry carefully with a soft cloth.
Do not use the radio until it is completely
dry. Ensure you allow enough time for the
inside to dry out thoroughly.

20
Warranty Information
The standard warranty period is 12 months from the date of
purchase. You may purchase an extended warranty from your
supplier or by visiting www.opusradio.eu.
If you experience a problem consult the relevant section of the
user manual and the troubleshooting guide. If you continue to
experience a problem or issue please contact your supplier.
Note: You must retain your receipt/invoice to validate all warranty
claims.
For further information regarding the warranty, please visit our
website.
Warranty Exclusions
The standard warranty is limited and has certain exclusions. A
non-exhaustive list of exclusions is shown below:
Failure to provide proof of purchase.
The product has been modified or changed in any way.
The serial number and/or warranty sticker has been removed.
Damage caused through the use of non-approved accessories.
The product has been repaired by an unauthorised person.
The product has failed due to misuse, abuse or abnormal use.
The product has failed due to water ingress/damage..
Failure to exercise reasonable care and maintenance.
Failure to follow or adhere to the operating instructions.