HYT TC-320 User manual

Preface
Thank you for purchasing HYT TC-320 Business Radio. TC-320 is unique for its compact
and delicate body. It is ergonomically designed to give you exceptional experience of
portability.
This easy-to-use radio will deliver you secure, instant and reliable communications at
peak efficiency. Please read this manual carefully before use. The information presented
herein will help you to derive maximum performance from your radio.
MODELS COVERED IN THIS MANUAL
TC-320 UHF Two-way Radio

1
Contents
Safety Information ............................................................................................................................2
Product Inspection ............................................................................................................................3
Radio Overview ................................................................................................................................4
Battery Information...........................................................................................................................6
Antenna Information.........................................................................................................................9
Assembly and Disassembly ............................................................................................................10
Attaching/Removing the Battery.............................................................................................10
Attaching/Removing the Antenna...........................................................................................11
Attaching/Removing the Belt Clip..........................................................................................12
Attaching/Removing the Battery When the Belt Clip isAttached..........................................13
Attaching/Removing the Earpiece/Mini USB.........................................................................13
Basic Operations.............................................................................................................................14
Turning the Radio On/Off.......................................................................................................14
Adjusting the Volume..............................................................................................................14
Selecting a Channel.................................................................................................................14
Transmitting............................................................................................................................14
Receiving ................................................................................................................................14
Programmable Auxiliary Functions ................................................................................................14
Advanced Operations......................................................................................................................15
CTCSS/CDCSS.......................................................................................................................15
Battery Save............................................................................................................................15
Power Adjust...........................................................................................................................16
Time-out Timer (TOT)............................................................................................................16
Battery Strength Indicator.......................................................................................................16
Monitor ...................................................................................................................................17
Scan.........................................................................................................................................17
Busy Channel Lockout (BCL) ................................................................................................19
Low BatteryAlert....................................................................................................................19
VOX (Voice-Operated Transmit)............................................................................................19
Troubleshooting ..............................................................................................................................21
Care and Cleaning...........................................................................................................................22
OptionalAccessories.......................................................................................................................22

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Safety Information
The following safety precautions shall always be observed during operation, service and
repair of this equipment.
◇This equipment shall be serviced by qualified technicians only.
◇Do not modify the radio for any reason.
◇Use only HYT supplied or approved batteries and chargers.
◇To avoid electromagnetic interference and/or compatibility conflicts, turn off your
radio in any area where posted notices instruct you to do so. Turn off your radio
before boarding an aircraft.Any use of a radio must be in accordance with airline
regulations or crew instructions.
◇For vehicles with an air bag, do not place a radio in the area over an air bag or in
the air bag deployment area.
◇Turn off your radio prior to entering any area with explosive and flammable
materials.
◇Do not charge your battery in a location with explosive and flammable materials.
◇Turn off your radio before entering a blasting area.
◇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.
◇Do not expose the radio to direct sunlight over a long time, nor place it close to
heating source.
◇When transmitting with a portable radio, hold the radio in a vertical position with
the microphone 3 to 4 centimeters away from your lips. Keep antenna at least 2.5
centimeters away from your body when transmitting.
WARNING: If you wear a radio on your body, ensure the radio and its antenna
are at least 2.5 centimeters away from your body when transmitting.

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Product Inspection
Please unpack the package box carefully and check that all items shipped are received;
report any missing or damaged items to your dealer.
Accessories
Item
Qty. (PCS)
Antenna
1
Nylon Strap
1
Belt Clip
1
Screw (Belt Clip)
2
Li-Ion Battery
1
Switching Power
1
Owner’s Manual
1
Antenna
Li-Ion Battery
Switching Power (varying
in different countries and
regions)
Nylon Strap
Belt Clip
Note: Frequency band is marked on the label of antenna, if not, please refer to the label
on the radio unit for detailed frequency band information.

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Radio Overview
(1) PTT (Push-to-Talk)
Key
(2) SK (Side Key)
(3) Speaker
(4) Volume Adjust
Keys [+]/[-]
(5) Microphone
(6) Nameplate
(7) Charging Terminal
(8) Antenna
(9) Power Switch
(10) Channel/Status
Indicator
(11) Channel Selector
Knob
(12) Charge
Indicator
(13) Accessory Jack
Cover
(14) Audio Accessory
Jack
(15) Mini USB Jack
(16) Strap Hole
(17) Screw (Belt Clip)
(18) Belt Clip
(19) Rear Cover
(20) Battery Latch
﹡PTT (Push-to-Talk) Key
Press and hold down the PTT key to transmit, and release it to receive.
﹡SK (Side Key)

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Side Key is a programmable key that can be assigned with long/short press functions
by your dealer.
Note:
Short Press: Key press shorter than 1 second.
Long Press: Key press longer than 1 second.
﹡Status Indicator
Status indications and alert tones are shown in the table below:
Power on (to enter user
mode)
When the radio is turned on, the power on alert tone sounds and
Status Indicator flashes orange once.
When the current channel is a blank channel, the radio sounds
beep tone continuously.
Power off
When the radio is turned off, the power off alert is heard.
Low battery alert
Status Indicator flashes red, and a low-pitched tone sounds at
intervals of 10 seconds.
Transmitting
Status Indicator glows red when transmitting.
When TOT timer expires, the radio sounds beep tone
continuously.
TOT pre-alert: A beep is heard.
Receiving
Status Indicator glows green when carrier is present.
Scanning
Status Indicator flashes green once every 1 second, while
scanning is in process.
Scan Start Alert Tone (programmable by your dealer): A beep is
heard.
When signal is received on a certain channel, Status Indicator
solidly glows green.
Scan Exit Alert Tone (programmable by your dealer): A beep is
heard.
Power adjust
A low-pitched tone is heard when transmit power is switched
from high power to low power.

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A high-pitched tone is heard when transmit power is switched
from low power to high power.
VOX
One beep sounds when the VOX feature is activated.
Two beeps sound when the VOX feature is disabled.
* Battery Latch
Used to secure or remove the battery.
* Audio Accessory Jack
Used to connect audio accessories such as earpieces.
* Mini USB Jack
Used to connect accessories such as programming cable, cloning cable and power cord.
Battery Information
Initial Use
New batteries are shipped not fully charged from the factory. Charge a new battery for 5
hours before initial use. The maximum battery capacity and performance is achieved after
three full charge/discharge cycles. If you notice the battery power runs low, please
recharge the battery.
Applicable Battery Packs
To reduce the risk of injury, charge only the battery specified by the manufacturer. Other
batteries may burst, causing bodily injury and damage.
Caution:
1. To avoid risk of personal injury, do not dispose of batteries in a fire!
2. Dispose of batteries according to local regulations (e.g. recycling). Do not dispose as
household waste.
3. Never attempt to disassemble the battery.
Battery Tips
1. When charging your battery, keep it at a temperature among 5℃- 40℃. Temperature

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out of the limit may cause battery leakage or damage.
2. When charging a battery attached to a radio, turn the radio off to ensure a full charge.
3. Do not cut off the power supply or remove the battery when charging a battery.
4. Never charge a battery that is wet. Please dry it with soft cloth prior to charge.
5. The battery will eventually wear out. When the operating time (talk-time and standby
time) is noticeably shorter than normal performance, it is time to buy a new battery.
6. In case the radio shuts off automatically at low battery power, recharge the battery
promptly, or the battery could suffer damage.
7. Remove the battery before you store the radio for a long time, or the battery could
suffer damage.
To Prolong Battery Life
1. Battery performance will be greatly decreased at a temperature below 0℃. A spare
battery is necessary in cold weather. The cold battery unable to work in this situation
may work under room temperature, so keep it for later use.
2. The dust on the battery contact may cause the battery cannot work or charge. Please
use clean dry cloth to wipe it before attaching the battery to the radio.
Battery Storage
1. Fully charge a battery before you store it for a long time, to avoid battery damage due
to over-discharge.
2. Recharge a battery after several months’ storage (Li-Ion & Li-polymer batteries: 6
months), to avoid battery capacity reduction due to over-discharge.
3. Store your battery in a cool, dry place under room temperature, to reduce
self-discharge.
Charging the Battery
When the Status Indicator flashes red and an alert tone sounds at intervals of ten seconds
indicating the battery power runs low, please recharge the battery. Use only the charger
specified by the manufacturer. The Charge Indicator indicates the charging progress.
Please follow these steps to charge your radio using the switching power or
charger:

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1. Plug theAC connector of the switching power into the AC outlet socket.
2. Plug the Mini USB connector of the switching power into the Mini USB jack of the
radio or charger.
3. Place the radio with the battery attached in the charger when the charger indicator
glows green to indicate the power supplies normally. (Please skip this step if you don’t
use a charger)
4. Make sure the radio is connected to the switching power or the charger. The charging
process initiates when the Charge Indicator of the radio glows red.
5. The Charge Indicator glows green when the battery is fully charged. Please remove
the radio then.
Status
Charge Indicator of the Radio
Battery is charging.
Charge Indicator solidly glows red.
Battery is fully charged.
Charge Indicator solidly glows green.
Note: Make sure the radio is attached with a battery before charging, and is powered off
during charging.
Please follow these steps to charge a battery using the desktop charger:

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1. Plug theAC connector of the switching power into theAC outlet socket.
2. Plug the Mini USB connector of the switching power into the Mini USB jack of the
charger. Indicator of the charger glows green.
3. Place the battery in the charger.
4. Make sure the battery is connected to the charger. The charging process initiates
when the charger indicator glows orange.
5. The charger indicator glows green when the battery is fully charged. Please remove
the battery then.
Status
Charger Indicator
Battery is charging.
Charger Indicator solidly glows orange.
Battery is fully charged.
Charger Indicator solidly glows green.
Antenna Information
Stubby antenna is durable, and is ideal for communication at low transmit power.
Communication range may vary with terrain and your operating conditions. Rainy
days or forest locations may narrow your communication range, please make
preparation in advance to avoid potential inconvenience.