HYT TC-446S User manual

TC-446S Owner’s Manual
1
Instructional Icons
The following icons are available through this manual:
Caution: indicates situations that could cause damage to your product.
Note: indicates tips that can help you make better use of your product.
Term Explanation
Please pay your attention to the following key terms:
Key Operation
Short press: to press a key and release it quickly.
Long press: to press and hold down a key for above 1 second.
Hold down: to press a key and remain holding it down.
User Mode
User mode is the operation mode you enter by powering on the radio.
CTCSS/CDCSS
This technology can avoid unwanted calls at the same frequency.

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Copyright Information
Hytera and HYT are trademarks or registered trademarks of Hytera Communications Co., Ltd. (“Hytera”)
in PRC and/or other countries or areas. Hytera retains the ownership of its trademarks and product
names.All other trademarks and/or product names that may be used in this manual are properties of
their respective owners.
The Hytera product described in this manual may include Hytera computer programs stored in memory
or other media. Laws in PRC and/or other countries or areas protect the exclusive rights of Hytera with
respect to its computer programs. The purchase of this product shall not be deemed to grant, either
directly or by implication, any rights to the purchaser regarding Hytera computer programs.Any Hytera
computer programs may not be copied, modified, distributed, decompiled, or reverse-engineered in any
manner without the prior written consent of Hytera.
Disclaimer
Hytera endeavors to achieve the accuracy and completeness of this manual, but no warranty of
accuracy or reliability is given. All the specifications and designs are subject to change without notice
due to continuous technology development. No part of this manual may be copied, modified, translated,
or distributed in any manner without the express written permission of Hytera.
If you have any suggestions or would like to learn more details, please visit our website at:
http://www.ortadogutelsiz.com

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RF Energy Exposure Compliance
Your product is designed and tested to comply with a number of national and international standards and
guidelines (listed below) regarding human exposure to radio frequency electromagnetic energy. This
product complies with the IEEE and ICNIRP exposure limits for occupational/controlled RF exposure
environment at operating duty factors of up to 50% transmitting and is authorized by the FCC for
occupational use only. In terms of measuring RF energy for compliance with the FCC exposure
guidelines, your product radiates measurable RF energy only while it is transmitting (during talking), not
when it is receiving (listening) or in standby mode.
Your product complies with the following of RF energy exposure standards and guidelines
United States Federal Communications Commission, Code of Federal Regulations; 47CFR part
2 sub-part J
American National Standards Institute (ANSI)/Institute of Electrical and Electronic Engineers
(IEEE) C95. 1-1992
Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1999 Edition
International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998
Operational Instructions and Training Guidelines
To ensure optimal performance and compliance with the occupational/controlled environment RF energy
exposure limits in the above standards and guidelines, users should transmit no more than 50% of the
time and always adhere to the following procedures:
Transmit and Receive
To transmit (talk), push the Push-To-Talk (PTT) key; to receive, release the PTT key.
FCC Licensing Information
Part 15 Compliance
This product 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 product 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 product does cause harmful interference to radio or television reception, which can be

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determined by turning the product 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 product and receiver.
Connect the product 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.
FCC Licensing Requirements
A license from Federal Communications Commission is required prior to use. Your dealer will program
each product with your authorized frequencies, signaling codes, etc., and will be there to meet your
communications needs as your system expands. Contact your dealer for more information.
EU Regulatory Conformance
The product is in compliance with the essential requirements and other relevant provisions of the
Directive 1999/5/EC.
Note: The above information is applicable to EU countries only.

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Contents
Checking Items in the Package.................................................................................................................. 6
Product Overview....................................................................................................................................... 7
Product Controls ................................................................................................................................. 7
Programmable Keys............................................................................................................................ 8
Before Use.................................................................................................................................................. 9
Charging the Battery........................................................................................................................... 9
Assembling the Accessories............................................................................................................. 10
Status Indication....................................................................................................................................... 12
Basic Operations...................................................................................................................................... 13
Turning the Radio On/Off.................................................................................................................. 13
Adjusting the Volume........................................................................................................................ 13
Selecting a Channel.......................................................................................................................... 13
Transmitting/Receiving...................................................................................................................... 13
Functions and Operations........................................................................................................................ 14
CTCSS/CDCSS ................................................................................................................................ 14
Time-out Timer (TOT)........................................................................................................................ 14
Monitor .............................................................................................................................................. 14
Squelch Off........................................................................................................................................ 15
Scan.................................................................................................................................................. 15
VOX................................................................................................................................................... 16
Battery Strength Indicator ................................................................................................................. 17
Low BatteryAlert............................................................................................................................... 17
Channel Lock .................................................................................................................................... 17
Battery Save...................................................................................................................................... 18
Busy Channel Lockout...................................................................................................................... 18
Troubleshooting........................................................................................................................................ 19
Care and Cleaning ................................................................................................................................... 20
Optional Accessories................................................................................................................................ 21

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Checking Items in the Package
Please unpack carefully and check that all items listed below are received. If any item is missing or
damaged, please contact your dealer.
Battery Rapid-rate Charger Power Adapter
Belt Clip Strap
Owner’s Manual & Safety Information Booklet Radio Unit
Note: The pictures are for reference only.

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Product Overview
Product Controls
6
5
4
7
8
11
14
15
16
17
1
2
3
9
10
12
13
No.
Part Name
No.
Part Name
○
1
PTT Key
○
10
Battery Latch
○
2
SK1 (programmable)
○
11
Accessory Jack Cover
○
3
SK2 (programmable)
○
12
Accessory Jack

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○
4
Antenna
○
13
Strap Hole
○
5
Channel Selector Knob
○
14
Belt Clip
○
6
Radio On-Off/Volume
Control Knob
○
15
Battery
○
7
Speaker
○
16
Screw of Belt Clip
○
8
Microphone
○
17
Charging Piece
○
9
LED Indicator
Programmable Keys
For enhanced convenience, you may request your dealer to program the keys SK1 and SK2 as shortcut
to the functions listed below:
No.
Shortcut Key
Function
1
Monitor
To adjust the condition for incoming signal
match.
2
Monitor Momentary
3
Squelch Off
To always unmute speaker no matter
whether carrier is present or not.
4
Squelch Off Momentary
5
Scan
To listen to communication activities on
other channels.
6
VOX
To make the radio transmit automatically
when you speak.
7
Battery Strength Indicator
To indicate the charge remaining in the
battery.
8
Channel Lock
To lock the current channel.
Note: Long and short press of the key can be assigned with different functions by your dealer.

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Before Use
Charging the Battery
Use only the charger and battery specified by Hytera. Charger LED can indicate the charging process.
■ Charge Diagram
3
3
2
1
■ Procedures
1. Connect the power adapter to AC source. See arrow 1;
2. Plug the power adapter into the rear socket of the charger. See arrow 2;
3. Place the radio with the battery attached, or the battery alone, into the charger; See arrow 3;
4. The charging process initiates when LED glows red, and is completed when LED glows green.
Note: To achieve optimal battery performance, please charge the battery for 5 hours before initial
use.
■ Charge Indicator
LED Indicator
Charge Status
Red LED glows.
Charging
LED solidly glows orange.
About fully charged
LED solidly glows green.
Fully charged

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When battery power runs low, the LED will flash red, and the low-pitched tone will sound periodically. In
this case, please replace or charge the battery.
Caution: Be sure to read the Safety Information Booklet, to get necessary safety information.
Assembling the Accessories
Attaching the Battery
1. Push the battery into the radio’s slot;
2. Slightly press the bottom of the battery until a click is heard.
To remove the battery, turn off the radio first. Then slide the battery latch upward to release the battery.
Attaching the Belt Clip
1. Remove the screws;
2. Align the screw holes on the belt clip with those on the radio’s body, and then tighten the screws.
To remove the belt clip, loosen the screws.

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Attaching the Audio Accessory/Programming Cable
1. Uncover the accessory jack;
2. Plug an audio accessory/programming cable into the accessory jack (if it is an audio accessory,
remember to tighten the screw).
To remove the accessories, pull out the plug (if it is an audio accessory, remember to loosen the screw
first).
Caution: When you are using an external accessory, waterproof performance of the radio may
get affected.

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Status Indication
The top LED indicator will help you easily identify current radio status.
LED Indicator
Radio Status
Red LED glows.
Transmitting
Red LED flashes.
Low battery alert
Green LED glows.
Receiving
Green LED flashes.
Scanning

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Basic Operations
Turning the Radio On/Off
Rotate the Radio On-Off/Volume Control knob clockwise/counter-clockwise until a click is heard to turn
the radio on/off.
Adjusting the Volume
You may control the volume level using the Radio On-Off/Volume Control knob. After the radio is
powered on, rotate the knob clockwise to increase the volume, or counter-clockwise to decrease the
volume.
Selecting a Channel
The radio supports up to 16 channels. Rotate the Channel Selector knob to align your desired channel
number with the white channel mark.
Note: When the radio is currently staying on a blank channel, it would sound beep tones
continuously.
Transmitting/Receiving
To transmit audio signals, press and hold down the PTT, and speak into the microphone. During
transmitting, the LED solidly glows red.
To receive, just release the PTT. When any audio signal is received, the LED solidly glows green.
Note:
To ensure optimal volume of the receiving radio, hold the radio approximately 2.5 to 5
centimeters away from your mouth.
Communication range may get affected in rainy days or forest locations.

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Functions and Operations
CTCSS/CDCSS
You may set up talkgroups with unique CDCSS/CTCSS to prevent unwanted conversations at the same
frequency. If CTCSS/CDCSS is set on a certain channel, you can only receive voice calls from radios
with matching CTCSS/CDCSS. Otherwise you will receive voice calls from all users operating at the
same frequency.
You may request your dealer to program corresponding parameters on certain channels. For detailed
operation method, please consult your dealer.
Note: The radio supports 38 groups of standard CTCSS, 83 groups of standard CDCSS, and 180
degree CTCSS tail reverse.
Time-out Timer (TOT)
The purpose of TOT is to prevent any user from occupying a channel for an extended period. If the
preset time expires, the radio will automatically terminate transmission and keep beeping. To stop
beeping, please release the PTT key. You must wait for a certain time period (preset by your dealer)
before you can press and hold down the PTT key to transmit again.
If the pre-alert function is set by your dealer, your radio will alert you to the TOT expiration in advance.
Monitor
This feature allows you to lower the conditions for incoming signal match.
Operation:
Press the programmed Monitor key to activate this function (an alert tone sounds); press it
again to deactivate the function (the alert tone sounds twice). Or
Press and hold the programmed Monitor Momentary key to activate this function (an alert tone
sounds); release the key to exit (the alert tone sounds twice).

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Squelch Off
This feature allows you to unmute the speaker on current channel, no matter whether a carrier is
present.
Operation:
Press the programmed Squelch Off key to activate this function; press the key again to
deactivate it. Or
Press and hold the programmed Squelch Off Momentary key to activate this function; release
the key to deactivate it.
Note: When this function is enabled on current channel, you will hear audio signals (if any);
otherwise, background noise will be heard.
Scan
This feature allows you to listen to communication activities on other channels so that you can keep a
close track of your team members. The scan list can be set by your dealer.
Operation:
1. To activate this function, you may
Press the programmed Scan key; or
Switch to a channel enabled with the auto scan feature (programmed by your dealer).
Note: The radio will not start scan if there are less than two channels in the scan list.
2. After the feature is enabled, your radio will scan according to the scan list set for the channel on
which scanning starts. The scanning process is as follows:
During scanning, the LED flashes green;
When communication activities are detected on a channel, the radio will stay to receive
activities present on this channel.At this time, the LED glows green;
If the talk back feature is enabled by your dealer, press and hold down the PTT to reply when
the radio stays on a certain channel.
You can scan the frequently used channel if the priority scan feature is enabled. When scan
stays on a non-priority channel, the radio will keep detecting activities on the priority channel.
Once any activity is detected, it will jump to the priority channel. For more information, please

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consult your dealer.
3. To exit the scanning process, you may
Press the Scan key again; or
Switch to a channel where the auto scan feature is not enabled;
Turn the radio off.
Note:
You can enable or disable the following alert tones: scan start alert and scan exit alert.
During scanning, the following function keys, if programmed, are available: PTT, .Squelch Off,
Squelch Off Momentary, Monitor and Monitor Momentary.
VOX
This feature allows you to transmit the voice with no need to press PTT. However, you must employ a
dedicated earpiece to realize this function.
Operation:
1 Set the PTT/VOX Switch on the earpiece to VOX;
2 Plug the earpiece into the accessory jack;
3 Press the programmed VOX key to activate this function;
4 Speak into the microphone (on the earpiece) to transmit your voice, and transmission will stop
automatically when you stop talking;
5 Power the radio off or press the VOX key again to deactivate this function.
Note:
If the PTT/VOX Switch on the earpiece is set to PTT, you can only transmit by pressing the
external PTT, no matter whether VOX is activated.
When the earpiece is plugged into the accessory jack, do not switch the PTT/VOX Switch from
PTT to VOX directly if it is set to PTT; otherwise, continuous transmission may occur. If
continuous transmission occurs unexpectedly, you can restore the radio to normal operation by
toggling the switch from VOX to PTT, or turning the radio off and back on.
You can select an appropriate VOX sensitivity according to the operating environment. If VOX
is activated under heavy noise, continuously transmission may occur.

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Battery Strength Indicator
With this feature, you can learn the remaining battery strength easily.
Operation:
Press and hold down the programmed Battery Strength Indicator key, and the LED glows to
indicate remaining battery strength by different colors (see table below). Release the key to exit.
The table lists different colors representing different battery strength levels.
LED Indicator
Battery Strength
LED glows green.
High
LED glows orange.
Medium
LED glows red.
Low
Low Battery Alert
This feature allows you to know the low battery status. When battery power runs low, the LED will flash
red, and the low-pitched tone (programmed by your dealer) will sound periodically. In this case, please
replace or charge the battery.
Note: When the battery strength is insufficient, the programmed Battery Strength Indicator key
will become unavailable. However, when the battery strength is drained, transmission will
be prohibited; if you press PTT in such situations, the radio will sound an alert to warn you.
Channel Lock
This feature can avoid unexpected channel change due to rotation of Channel Selector knob by
accident.
Operation:
Press the programmed Channel Lock to activate this function (an alert tone sounds); press the key
again to deactivate it (the alert tone sounds twice). After this function is activated, the radio will stay
on current channel; at this time, you can not change the channel even using the Channel Selector
knob.
Note: This function will be deactivated if the radio is powered off and back on, or it is
programmed.

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Battery Save
In Standby mode, if the radio is inactive (no key press/transmission/reception) for 10 seconds
(programmable), it will automatically enter Battery Save mode to reduce battery consumption. The radio
may exit the Battery Save mode and get activated once any key is pressed or any signal is received.
Busy Channel Lockout
If enabled via the programming software, this feature can prevent your radio interfering with other
transmitting radios on the same channel. If you hold down the PTT key while the channel is in use, your
radio will keep beeping and return to Receive mode. To stop beeping, please release the PTT key.

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Troubleshooting
Phenomena
Analysis
Solution
The radio can not be
powered on.
The battery may be improperly
installed.
Remove the battery and attach it again.
The battery may run out.
Recharge or replace the battery.
The battery may suffer from poor
contact caused by dirtied or
damaged battery contacts.
Clean the battery contacts. If the problem can
not be solved, contact your dealer or authorized
service center for inspection and repair.
During receiving signals, the
voice is weak, discontinuous
or totally inactive.
The battery strength may be too
low.
Recharge or replace the battery.
The volume may be set to a low
level.
Increase the volume by rotating the Radio
On-Off/Volume Control knob clockwise.
The speaker may be blocked or
damaged.
Clean surface of the speaker. If the problem can
not be solved, contact your dealer or authorized
service center for inspection and repair.
You can not communicate
with other members.
The frequency or signaling may be
inconsistent with that of other
members.
Set your TX/RX frequency and signaling the
same as that of other members.
The radio may be locked on other
channels.
Deactivate the Channel Lock function and switch
to your desired channel.
You may be too far away from the
group members.
Move towards other members. And make sure
that you are within the communication range.
Irrelevant communications or
noises are heard on the
channel.
You may be interrupted by radios
using the same frequency.
Change the frequency, or adjust the squelch
level.
The radio may not be set with any
signaling.
Set signaling for all member radios to avoid
interference at the same frequency.
The noise is too loud.
You may be too far away from
other members.
Move towards other members, power off your
radio and then restart it.
You may be at an unfavorable
position. For example, your
communication may be blocked by
high buildings or frustrated in the
underground areas.
Move to an open and flat area, and restart the
radio.
You may suffer from external
disturbance (such as
electromagnetic interference).
Stay away from equipment that may cause
interference.
If the above solutions can not fix your problems, or you may have some other troubles, please contact us
or your local dealer for more technical support.

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Care and Cleaning
To guarantee optimal performance as well as a long service life of your product, please follow the tips
below.
Product Care
Do not pierce or scrape the product with any edged instruments or hard objects.
Keep the product far away from substances that can corrode the electronic circuit.
Do not hold the product by its antenna or headset cable directly.
Attach the accessory jack cover when the product is not in use.
Product Cleaning
Clean up the dust and fine particles on the product surface and charging piece with a clean and dry
lint-free cloth or a brush regularly.
Use neutral cleanser and a non-woven cloth to clean the keys, control knobs and front case after
long-time use. Do not use chemical preparations such as stain removers, alcohol, sprays or oil
preparations, so as to avoid surface case damage. Make sure the product is completely dry before
use.
Caution: Power off and remove the battery before cleaning.