Hytera Communications PD70XGU2 Digital Portable Radio User Manual
Hytera Communications Corporation Ltd. Digital Portable Radio
User Manual
Preface 
Thank you for purchasing Hytera DMR Digital Portable Radio. As a product built to the DMR standard, it is 
endowed with ergonomic design, all-round digital functions and remarkable quality to refresh your 
experience and enable you to be responsive to emergent situations.   
To derive optimum performance from your product, please read this manual and the supplied Safety 
Information Booklet carefully before use.   
This manual is applicable to the following model: 
PD70X 
PD70XG 

Instructional Icons   
The following icons are available through this manual: 
Alert Icons   
 Caution: indicates situations that could cause damage to your product.   
 Note: indicates tips that can help you make better use of your product.   
Function Icons   
: indicates functions that are available on digital channel only.   
: indicates functions that are available on analog channel only.   
Functions marked with no function icons are available on both analog and digital channels. 
Term Explanation   
Key Operation   
Short press: to press a key and release it quickly.   
Long press: to press a key and remain holding it down for a predefined period (2 seconds by default).   
Hold down: to press a key and remain holding it down.   
Private Call 
Private Cal is a call initiated by a single user to another user.   
Group Call 
Group Call is a call initiated by a single user to a group.   
All Call   
All Call is a call initiated by a single user to all the other users on a channel.   
Squelch 
This technology can remove excessive background noises, improving your communication quality.   
  1
This radio is not intended for use by general population in an uncontrolled environment. It is only for 
occupational use and only applied to work-related conditions.   
The radio must be only used by users, who are fully aware of the hazards of the exposure and who 
are able to exercise control over their RF exposure to qualify for the higher exposure limits. 

  2
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 with respect to 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.   
The AMBE+2TM voice coding technology embodied in this product is protected by intellectual property 
rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. 
This voice coding technology is licensed solely for use within this product. The user of this technology is 
explicitly prohibited from attempting to decompile, reverse engineer, or disassemble the Object Code or in 
any other way convert the Object Code into a human readable form.     
U.S. Patent Nos. #6,912,495 B2, #6,199,037 B1, #5,870,405, #5,826,222, #5,754,974, #5,701,390, 
#5,715,365, #5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084 and 
#5,195,166. 
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 prior 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.hytera.cn.  
RF Energy Exposure Compliance 
●  Your radio 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 radio 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 radio radiates measurable 
RF energy only while it is transmitting (during talking), not when it is receiving (listening) or 
in standby mode. 
●    The device complies with SAR and/or RF field strength limits of RSS-102 requirement。 
Your radio 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; and should transmit no more 
than 50% of the time, although the hardware support transmission up to 100% of the time in 
analog mode and up to 50% in digital mode. 
 The radio may use Chest Pack(LCBN13) as optional assessory, The chest Pack provide an extra
 protection to the operator under RF exposure due to special measures taken during design and 
manufacturing process. Chest Packis designed allow the radio only stick to it with belt-clip.the
 belt-clip will provide necessary distance between antenna and operator's body. The operator
 should follow Chest Pack usage instruction to ensure compliance with RF energy exposure limits. 
Transmit and Receive 
To transmit (talk), push the Push-To-Talk (PTT) key; to receive, release the PTT key. 

EU Regulatory Conformance 
The equipment 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. 
FCC Licensing Information 
Part 15 Compliance   
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. 
FCC Licensing Requirements 
A license from Federal Communications Commission is required prior to use. Your dealer will 
program each radio 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. 

Contents 
Checking Items in the Package................................................................................................................. 7 
Product Overview ...................................................................................................................................... 8 
Product Controls..............................................................................................................................8 
Programmable Keys ........................................................................................................................8 
Before Use .............................................................................................................................................. 10 
Charging the Battery......................................................................................................................10 
Assembling the Accessories ..........................................................................................................11 
Status Indication ...................................................................................................................................... 13 
LED Indicator.................................................................................................................................13 
Basic Operations ..................................................................................................................................... 14 
Turning the Radio On/Off...............................................................................................................14 
Adjusting the Volume.....................................................................................................................14 
Selecting a Zone............................................................................................................................14 
Selecting a Channel.......................................................................................................................14 
Switching the Channel Mode .........................................................................................................14 
Call .......................................................................................................................................................... 15 
Private Call  .........................................................................................................................15 
Group Call  ...........................................................................................................................15 
All Call  .................................................................................................................................15 
Calls on Analog Channels  ...................................................................................................16 
Functions and Operations ....................................................................................................................... 17 
Adjust Power Level........................................................................................................................17 
Scan ..............................................................................................................................................17 
Talk Around....................................................................................................................................18 
Monitor .................................................................................................................................18 
Squelch Off  ........................................................................................................................18 
Emergency ....................................................................................................................................18 
Adjust Squelch Level  ..........................................................................................................22 
Battery Power Indicator .................................................................................................................22 
Man Down (optional)......................................................................................................................22 
Scrambler /Encrypt .......................................................................................................23 
Busy Channel Lockout...................................................................................................................23 
  5

Time-out Timer (TOT) ....................................................................................................................23 
Pseudo Trunking  .................................................................................................................23 
MIC AGC .......................................................................................................................................24 
Troubleshooting....................................................................................................................................... 25 
Care and Cleaning .................................................................................................................................. 27 
Optional Accessories............................................................................................................................... 28 
  6

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                      Charger                           Power Adapter 
Antenna                           Belt Clip                                   Strap 
Owner’s Manual/ Safety Information Booklet                             Radio Unit 
 Note: The antenna may vary with different frequency bands. And the frequency band is marked on 
the label of antenna; if not, please refer to the label on the radio unit for frequency band information. 
  7

Product Overview 
Product Controls 
  8
○
1  SK1 (Side Key 
1) 
○
2  PTT Key ○
3  SK2 (Side Key 
2)   
○
4   TK (Top Key)   
○
5  Channel 
Selector Knob   
○
6  Speaker ○
7  LED Indicator  ○
8 Radio On-Off/Volume 
Control Knob 
○
10  Accessory Jack ○
11  Battery Latch ○
12  Antenna  
○
9  Microphone  
○
13  Belt Clip  ○
14  Battery  
Programmable Keys 
For enhanced convenience, you may request your dealer to program the keys SK1,  SK2, and TK as 
shortcuts to the functions listed below:   
No.   Shortcut Keys Description 
1 Zone Up 
To select a desired zone quickly 
2 Zone Down 
3  Adjust Power Level To adjust power level quickly   

4  Talk Around   To directly communicate with other radios 
Monitor  
5  To adjust the condition for incoming signal 
match 
Monitor Momentary   
6 
  9
7  Squelch Off   To always unmute speaker no matter whether 
carrier is present or not 
8  Squelch Off Momentary 
9  Scan   To receive signals on other channels 
To temporarily ignore unwanted channel 
activity 
10  Nuisance Temporary Delete   
11  Emergency To summon help in emergent situations   
To temporarily adjust the squelch threshold 
required for the radio to unmute 
Adjust Squelch Level   
12 
13  Battery Power Indicator To indicate the battery strength 
14  Man Down To activate Emergency in the case that the 
radio is positioned aslant for a preset time 
period due to an unexpected situation 
Scrambler /Encrypt
15  To encrypt your voice so as to guarantee 
privacy of your communication 
Note:    
(1) Long and short press of a key can be assigned with different functions by your dealer.   
(2) The TK is programmed as the Emergency key by default, and is programmable by your dealer.   

Before Use 
Charging the Battery 
Use only the charger and battery specified by Hytera. Charger LED can indicate the charging process.   
Charge Diagram 
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. 
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 
  10

Red LED flashes slowly. Standby (no load) 
Red LED glows. Charging   
Orange LED glows. 90% charged 
Green LED glows. Fully charged 
Red LED flashes rapidly. Failure 
 Caution: Be sure to read the Safety Information Booklet, to get necessary safety information.   
Assembling the Accessories 
Attaching the Antenna   
Turn the antenna clockwise to fasten it.   
To remove the antenna, rotate it counter-clockwise.   
Attaching the Battery 
1.  Insert the battery into top of the radio. See arrow  ○
1. 
2.  Slightly press the bottom of the battery until a click is heard. See arrow  ○
2. 
 11

To remove the battery, turn off the radio first. Then slide the battery latch upwards to unlock 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.   
Attaching the Audio Accessory/Programming Cable 
1.  Open the accessory jack cover as the arrow shown.   
2.  Align the plug with the accessory jack.   
3.  Tighten the screw on the plug.   
To remove accessories, loosen the screw.   
 Caution: When you are using an external accessory, waterproof performance of the radio may get 
affected.  
  12

  13
Status Indication 
LED Indicator   
The top LED indicator will help you easily identify the current radio status.   
LED Indicator   Radio Status 
LED flashes green. Powering on 
LED glows red.   Transmitting 
LED glows green.   Receiving 
LED flashes green 
slowly.   
Scanning 
LED flashes orange 
rapidly.   
Emergency 
LED glows orange.   Call ended (within the preset time period) 

  14
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 
After turning the radio on, rotate the Radio On-Off/Volume Control knob clockwise to increase the call 
volume, or counter-clockwise to decrease it. 
Selecting a Zone 
A zone is a group of channels exhibiting the same property, and is programmed by your dealer. The radio 
supports 3 zones: Zone 1, Zone 2 and Zone 3. Each zone contains 16 channels at most.   
You may quickly toggle to your desired zone by pressing the programmed Zone Up or Zone Down key. 
In the process, you will hear one alert tone for Zone 1, two alert tones for Zone 2 and three alert tones for 
Zone 3.   
Selecting a Channel   
Rotate the Channel Selector knob to select a desired channel. 
Switching the Channel Mode 
Each channel can be programmed as either analog channel or digital channel. If the current zone 
includes both analog and digital channels, you may quickly switch between digital and analog through the 
Channel Selector knob.   

Call 
To ensure optimal volume of the receiving radio, hold the radio approximately 2.5 to 5 centimeters away 
from your mouth.   
Private Call   
Transmitting a Private Call 
In standby mode, hold down the PTT key to transmit a Private Call to the Private Call contact preset for 
the current channel.   
 Note: Your dealer may preset a contact for each digital channel. The preset contact could be a 
Private Call contact, a Group Call contact or an All Call contact.   
Receiving and Responding to a Private Call 
When a Private Call is received, you can listen to it without any operation, and you may hold down the 
PTT key within the preset time period to call back. 
Group Call   
Transmitting a Group Call 
In standby mode, hold down the PTT key to transmit a Group Call to the Group Call contact preset for the 
current channel.   
Receiving and Responding to a Group Call 
When a Group Call is received, you can listen to it without any operation, and you may hold down the 
PTT key within the preset time period to call back. 
All Call   
Transmitting an All Call 
In standby mode, hold down the PTT key to transmit an All Call to the All Call contact preset for the 
current channel.   
 Note: You can transmit an All Call only when it is enabled by your dealer. 
Receiving an All Call 
When an All Call is received, you can listen to it without any operation.   
  15

 Note: You cannot respond to an All Call.   
Calls on Analog Channels   
To transmit on an analog channel, hold down the PTT and speak into the microphone. To receive, release 
the PTT key. 
  16

Functions and Operations 
Adjust Power Level 
With this feature, you may switch power levels quickly. Generally, we recommend you to adopt low power 
for battery saving. However, if you cannot communicate with radios located at a distant place with low 
power, please select high power. 
Operation:  
Press the programmed Adjust Power Level key to switch between high power and low power (from low 
power to high power: a high-pitched tone sounds; from high power to low power: a low-pitched tone 
sounds).  
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.   
Operation:   
1.  To enable the feature, press the programmed Scan key in standby mode (a high-pitched tone 
sounds); or 
Switch to a channel on which the feature “Auto Scan” is enabled via the programming software. 
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:   
z  During scanning, the LED flashes orange. 
z  When activities are detected on a channel, the radio will stay on the channel to receive current 
activities, and the LED glows green. 
z  If you don’t want to hear activities on the channel, press the programmed Nuisance Temporary 
Delete key to remove the channel from the scan list temporarily.   
z  If you want to continue staying on the channel, press the programmed Monitor or Squelch Off 
key during scan stay.   
3.  To exit the scanning process, press the programmed Scan key again (a low-pitched tone sounds). 
  17

Talk Around   
This feature allows you to continue communication even when the repeater malfunctions, or when your 
radio is out of the repeater’s range but within the coverage range of other radios.   
Operation:   
Press the programmed Talk Around key to enable the feature (a high-pitched tone sounds). To disable 
the feature, press this key again (a low-pitched tone sounds).   
Monitor  
To adjust match conditions for signal receiving, you can enable the feature “Monitor”. 
Operation:   
 Press the programmed Monitor key to enable the feature (a high-pitched tone sounds). To disable 
the feature, press this key again (a low-pitched tone sounds).   
  Hold down the programmed Monitor Momentary key to enable the feature (a high-pitched tone 
sounds). To disable the feature, release this key (a low-pitched tone sounds).   
Squelch Off   
If the feature “Squelch Off” is enabled, the speaker will keep unmuted no matter whether carrier is 
present.   
Operation:   
  Press the programmed Squelch Off key to enable the feature, and the radio sounds background 
noise (a high-pitched tone sounds). To disable the feature, press this key again (a low-pitched tone 
sounds). 
  Hold down the programmed Squelch Off Momentary key to enable the feature, and the radio 
sounds background noise (a high-pitched tone sounds). To disable the feature, release this key (a 
low-pitched tone sounds). 
Emergency 
  18
In case of an emergency, you can use the feature to ask for help from your companion or control center.   
The Emergency process has the highest priority. You can make emergency operation even when your 

radio is transmitting or receiving.   
To enable the feature on a channel, an emergency system must be assigned to the channel via the 
programming software. In addition, the Emergency type, Emergency ID type and Emergency mode are 
settable via the programming software.   
Emergency Type 
For each Emergency mode, there are four Emergency types available. You can select one of them via 
your dealer:   
Emergency Type Description 
Siren Only In Emergency mode, the radio will sound shrill alarm tone.   
Regular In Emergency mode, the radio will give audible and visible 
indication.   
Silent In Emergency mode, the radio won't give any audible or visible 
indication.   
Silent with Voice In Emergency mode, the radio won’t give any audible or visible 
indication, but will receive voice ACK from the companion or 
control center automatically.   
Emergency ID Type   
Your radio supports two Emergency ID types. You can select one of them via your dealer:   
Emergency ID Type Description 
None No signaling is used when the radio sends alarm information. 
HDC1200 HDC1200 signaling is used when the radio sends alarm 
information. 
Emergency Mode 
Your radio supports three Emergency modes. You can select one of them via your dealer (Note: For the 
following operation methods, we take the “Regular” type as an example). 
Emergency Mode Description 
Alarm   
In this mode, you can send alarm information to your 
  19

companion or control center by pressing the programmed 
Emergency key, but you cannot talk with them. 
Alarm with Call   
In this mode, you can send alarm information by pressing the 
programmed  Emergency key. When the alarm tone 
disappears (None) or after the Emergency ID is sent 
(HDC1200), you can speak into the microphone, allowing your 
voice and background noise to be transmitted automatically 
(you do not need to hold down the PTT key). 
Call Only In this mode, press the programmed Emergency key to go to 
the Revert Channel, and speak into the microphone, allowing 
your voice and background noise to be transmitted 
automatically (you do not need to hold down the PTT key).   
Operation Methods for Analog Emergency  
 Alarm (None & HDC1200) 
Operation: Press the programmed Emergency key to send alarm information, and the LED glows red. 
(None: If “Local Emergency Alarm" is enabled via the programming software, an alarm tone will sound.) 
The following methods are available for you to exit the Emergency mode: 
1.  Once the Alarm Cycles expire, the radio will exit the Emergency mode automatically.   
2.  Long press the programmed Emergency key. 
3.  Hold down the PTT key. The radio will transmit on the channel on which the radio operates before 
entering the Emergency mode. (HDC1200) 
 Alarm with Call (None & HDC1200) 
Operation:  
1. Press the programmed Emergency key to send alarm information, and the LED glows red. (None: If 
“Local Emergency Alarm" is enabled via the programming software, an alarm tone will sound.) 
2.  When the alarm tone disappears (None) or after the Emergency ID is sent (HDC1200), you can 
speak into the microphone to make an emergency call.   
3.  When the LED flashes orange, your radio is receiving.   
  20

Two methods are available for you to exit the Emergency mode: 
1.  After the preset Alarm Cycles and Voice Cycles expire, the radio will exit the Emergency mode 
automatically. (None) 
2.  Long press the programmed Emergency key. 
 Call Only (HDC1200) 
Operation:   
1.  Press the programmed Emergency key to go to the Revert Channel, and the LED glows red.   
2.  If the feature “Alarm with Call to Follow” is enabled, you can speak into the microphone to make an 
emergency call when the LED glows red.   
3.  When the LED flashes orange, your radio is receiving.   
To exit the Emergency mode, long press the programmed Emergency key. 
Note: Your dealer may set the number of alarm cycles and alarm duration (None),  number of 
polite retries and impolite retries (HDC1200), number of voice cycles, duration of each transmission and 
TX interval.   
Operation Method for Digital Emergency   
 Call Only 
Operation:   
1.  Press the programmed Emergency key to go to the Revert Channel.   
2.  If the feature “Alarm with Call to Follow” is enabled, you can speak into the microphone to make an 
emergency call when the LED glows red.   
3.  When the LED flashes orange, your radio is receiving.   
If the preset Voice Cycles expire, you can hold down the PTT key to make the emergency call again (the 
LED glows red). After the emergency call is transmitted, please release the PTT key to receive.   
To exit the Emergency mode, long press the programmed Emergency key. 
Note: Your dealer may set the number of voice cycles, duration of each transmission and TX 
interval.   
  21

Adjust Squelch Level   
This feature allows you to adjust the squelch threshold required for the radio to unmute.   
Generally, “Tight” is used in high noise environment. It requires stronger signal for the radio to unmute.   
If the squelch level is set to Open, the speaker will keep unmuted irrespective of the satisfaction of 
decoding conditions.   
Operation:  
Press the programmed Adjust Squelch Level key to switch among Tight, Open and Normal (from Tight 
to Open, a low-pitched tone and background sound are heard; from Open to Normal, a high-pitched tone 
is heard and the background sound disappears; from Normal to Tight, a high-pitched tone is heard). 
Battery Power Indicator 
This feature allows you to know the current battery strength.   
Operation:   
Hold down the programmed Battery Strength Indicator key, and the radio will give a specific indication 
to represent the current battery strength. Release the key to exit.   
Indication Battery Strength 
Green LED glows. High
Orange LED glows. Medium
Red LED glows. Low
Red LED glows and the low 
battery alert sounds.
Insufficient
Man Down (optional) 
With this feature, your radio will alarm automatically to summon help from your companion if it is 
positioned aslant for a certain time period.   
Operation:   
1.  To enable the feature,   
z  Press the programmed Man Down key (a high-pitched tone sounds); or 
z  Turn on the radio if the feature is enabled via the programming software.   
2. Your radio will sound a pre-alert tone if it is positioned aslant for a preset time period, and will enter 
the Emergency mode if you do not place it vertically within such time period. To exit the Emergency 
mode, please place it upright. 
3. To disable the feature,   
z  Press the programmed Man Down key (a low-pitched tone sounds). 
  22

Scrambler /Encrypt  
The Scrambler/Encrypt feature can encrypt your audio signals to prevent eavesdropping. Thus privacy of 
your communication is guaranteed.   
Operation:   
z Press the programmed Scrambler/Encrypt key to enable Scrambler or Encrypt on the current 
channel (a high-pitched tone sounds); press the key again to disable the feature (a low-pitched tone 
sounds).   
z If the Scrambler/Encrypt feature is enabled for a channel via the programming software, switch to the 
channel to enable the feature, or exit the channel to disable the feature.   
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, alerting you to transmission prohibition. To stop beeping, please release the PTT 
key. When the channel is free, you can press and hold down the PTT key to transmit.   
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) to initiate 
another transmission.   
If the pre-alert function is set by your dealer, your radio will alert you to the TOT expiration in advance. 
 Note: This feature is null in Emergency mode.   
Pseudo Trunking   
This feature can be enabled via the programming software. If your radio operates on a channel with this 
feature enabled and one time slot is already occupied, it can transmit and receive on the other free time 
slot, allowing you to communicate timely under emergent situations. 
  23

  24
MIC AGC 
If enabled via the programming software, your radio will process the audio signals during transmission, 
providing improved audio for the receiving radio.   

  25
Troubleshooting 
Phenomena   Analysis   Solution   
The battery may be 
improperly installed.   
Remove the battery and attach it again.   
The battery may run out.   Recharge or replace the battery.   
The radio can not be 
powered on.   
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.   
The battery strength may be 
too low.   
Recharge or replace the battery.   
The volume may be set to a 
low level.   
Increase the volume.   
The antenna may get loose 
or may be improperly 
installed.   
Power off the radio, and re-install the 
antenna.   
During receiving 
signals, the voice is 
weak, discontinuous or 
totally inactive.   
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.   
The frequency or signaling 
may be inconsistent with 
that of other members.   
Set your TX/RX frequency and signaling to 
the same as that of other members.   
The channel type 
(digital/analog) may be set 
inconsistently.   
Make sure all members are on the same 
digital/analog channel.   
You can not 
communicate with 
other members.   
You may be too far away 
from the group members.   
Move towards other members.   

  26
You may be interrupted by 
radios using the same 
frequency.   
Change the frequency, or adjust the squelch 
level.   
Irrelevant 
communication or 
noise is heard on the 
channel.   
The radio may be set with 
no signaling.   
Set signaling for all member radios to avoid 
interference at the same frequency.   
You may be too far away 
from other members.   
Move towards other members.   
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.   
The noise is too loud.   
You may suffer from 
external disturbance (such 
as electromagnetic 
interference).   
Stay away from equipment that may cause 
interference.   
The GPS cannot locate 
your position. 
No GPS signal is received. 
Move to an open and flat area, and restart 
the radio.   
If the above solutions can not fix your problems, or you may have some other queries, please contact us 
or your local dealer for more technical support.   

Care and Cleaning 
To guarantee optimal performance as well as a long service life of the 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 circuit.   
  Do not hold the product by its antenna or earpiece 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 fabric to clean the keys, control knobs and front case 
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.   
  27

Optional Accessories 
The following items are the main optional accessories for the product, and please consult your local 
dealer for more other accessories. 
Remote Speaker Microphone 
(IP57) SM18N2   
Earpiece with On-MIC 
PTT & Transparent 
Acoustic Tube EAN16   
D-earset with In-Line Microphone 
EHN12 
Earbud with On-MIC PTT 
ESN10   
Carrying    Case (for thick battery) 
(leather) (swivel) LCY003 
3-Wire Surveillance Earpiece with 
Transparent Acoustic Tube (beige) 
EAN17 
Six-Unit Switching Power   
PS7002 
 Caution: Use the accessories specified by Hytera only. If not, Hytera shall not be liable for any 
losses or damages arising out of use of unauthorized accessories.   
  28
 Chest Pack LCBN13