Hytera Communications PD50XU1 Digital Portable Radio User Manual PD500 Owner s Manual V00
Hytera Communications Corporation Ltd. Digital Portable Radio PD500 Owner s Manual V00
Users 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: 
PD502 U(1) Digital Portable Radio 
Instructional Icons   
The following icons are available through this manual: 

  1
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.   
Copyright Information 
Hytera is the trademark or registered trademark of Hytera Communications Co., Ltd. (“Hytera”) in PRC 

  2
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 Radiation Information 
RF Radiation Profile 
Radio Frequency (RF) is a frequency of electromagnetic radiation in the range at which radio signals are 

  3
transmitted. RF technology is widely used in communication, medicine, food processing and other fields. 
It may generate radiation during use.   
RF Radiation Safety 
In order to ensure user health, experts from relevant industries including science, engineering, medicine 
and health work with international organizations to develop standards for safe exposure to RF radiation. 
These standards consist of:   
  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;   
    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:  
      Your radio radiates measurable RF energy only while it is transmitting (during talking), not when it is 
receiving (listening) or in standby mode.  
FCC Regulations 
Federal Communication Commission (FCC) requires that all radio communication products should meet 
the requirements set forth in the above standards before they can be marketed in the U.S, and the 
manufacturer shall post a RF label on the product to inform users of operational instructions, so as to 
enhance their occupational health against exposure to RF energy.   
FCC Statement 
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant 
to part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful 
interference in a residential installation. This equipment generates 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 

  4
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 
Operation is subject to the following two conditions: 1. This device may not cause harmful interference, 
and 2. This device must accept any interference received, including interference that may cause 
undesired operation.   
Note:” Changes or modifications to this unit not expressly approved by the party responsible for 
compliance could void the user’s authority to operate the equipment.” 
Compliance with RF Exposure Standards 
Hytera’s 2-way radio complies with the following RF energy exposure standards and guidelines: 
•  United States Federal Communications Commission, Code of Federal Regulations; 47 CFR §§ 1.1307, 
1.1310 and 2.1093 
• 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 
RF Exposure Compliance and Control Guidelines and Operating 
Instructions 
To control your exposure and ensure compliance with the occupational/controlled environment exposure 
limits always adhere to the following procedures. 
Guidelines: 
•  Do not remove the RF Exposure Label from the device.   
• User awareness instructions should accompany device when transferred to other users.   
• Do not use this device if the operational requirements described herein are not met. 
Operating Instructions:   
• Transmit no more than the rated duty factor of 50% of the time.  To transmit (talk), push the 
Push-To-Talk (PTT) button.    To receive calls, release the PTT button.    Transmitting 50 % of the time, or 
less, is important because this radio generates measurable RF energy exposure only when transmitting 
(in terms of measuring for standards compliance). 
• Hold the radio in a vertical position in front of face with the microphone (and the other parts of the radio, 
including the antenna) at least one inch (2.5 cm) away from the nose.    Keeping the radio at the proper 
distance is important because RF exposures decrease with distance from the antenna.    Antenna should 

  5
be kept away from eyes.   
• When worn on the body, always place the radio in a Hytera’s approved clip, holder, holster, case, or 
body harness for this product. Using approved body-worn accessories is important because the use of 
Hytera’s or other manufacturer’s non-approved accessories may result in exposure levels, which exceed 
the FCC’s occupational/controlled environment RF exposure limits. 
•  If you are not using a body-worn accessory and are not using the radio in the intended use position in 
front of the face, then ensure the antenna and the radio are kept at least 2.5 cm (one inch) from the body 
when transmitting. Keeping the radio at the proper distance is important because RF exposures decrease 
with increasing distance from the antenna.   
• Use only manufacturer’s name approved supplied or replacement antennas, batteries, and accessories.   
Use of non-manufacturer-name approved antennas, batteries, and accessories may exceed the FCC RF 
exposure guidelines. 
•For a list of Hytera’s approved accessories (see the user manual), or (visit the following website which 
lists approved accessories: http:  add website address), or(The manufacturer should include the 
appropriate bracketed item{s} in the manual.) 
• For a list of Hytera’s approved accessories (see the user manual), or (visit the following website which 
lists approved accessories: www.hytera.cn 
IC statement 
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject 
to the following two conditions:   
(1) This device may not cause interference, and   
(2) This device must accept any interference, including interference that may cause undesired operation 
of the Device. 
The device has been tested and compliance with SAR limits, users can obtain Canadian information on 
RF exposure and compliance 
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts 
de licence. L'exploitation est autorisée aux deux conditions suivantes : 
(1) l'appareil nedoit pas produire de brouillage, et 
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est 
susceptible d'en compromettre le fonctionnement. 
Après examen de ce matériel aux conformité aux limites DAS et/ou aux limites d’intensité de champ RF, 
les utilisateurs peuvent sur l’exposition aux radiofréquences et la conformité and compliance d’acquérir 
les informations correspondantes 
EU Regulatory Conformance 
As certified by the qualified laboratory, the product is in compliance with the essential requirements and 
other relevant provisions of the Directive 1999/5/EC. Please note that the above information is 
applicable to EU countries only. 

  6
Contents 
Checking Items in the Package ....................................................................................................... 8 
Product Overview............................................................................................................................... 9 
Product Controls .............................................................................................................................................. 9 
Programmable Keys....................................................................................................................................... 10 
Before Use......................................................................................................................................... 11 
Charging the Battery.......................................................................................................................................11 
Assembling the Accessories........................................................................................................................... 12 
Status Indication ............................................................................................................................... 15 
LED Indicator ................................................................................................................................................ 15 
Basic Operations.............................................................................................................................. 16 
Turning the Radio On/Off.............................................................................................................................. 16 
Adjusting the Volume..................................................................................................................................... 16 
Selecting a Zone............................................................................................................................................. 16 
Selecting a Channel........................................................................................................................................ 16 
Switching the Channel Mode......................................................................................................................... 16 
Call...................................................................................................................................................... 17 
Private Call  ........................................................................................................................................ 17 
Group Call  .......................................................................................................................................... 17 
All Call  ............................................................................................................................................... 17 
Calls on Analog Channels.............................................................................................................................. 18 
Functions and Operations............................................................................................................... 19 
Adjust Power Level........................................................................................................................................ 19 
Scan................................................................................................................................................................ 19 
Talk Around ................................................................................................................................................... 20 
Monitor ................................................................................................................................................ 20 
Squelch Off  ....................................................................................................................................... 20 
Adjust Squelch Level  ........................................................................................................................ 20 
Battery Power Indicator ................................................................................................................................. 21 
Scrambler /Encrypt ..................................................................................................................... 21 
Busy Channel Lockout................................................................................................................................... 21 
Time-out Timer (TOT)................................................................................................................................... 22 
Pseudo Trunking  ................................................................................................................................ 22 

  7
MIC AGC....................................................................................................................................................... 22 
Radio Registration Service  ................................................................................................................. 22 
Troubleshooting................................................................................................................................23 
Care and Cleaning........................................................................................................................... 25 
Optional Accessories ....................................................................................................................... 26 

  8
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 
Radio Unit                              CD 
Owner’s Manual/ Safety Information Booklet/ Quick Reference Guide               
 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. 

  9
Product Overview 
PD502 U(1) Product Controls 
NO.  PART NAME  NO. PART NAME 
○
1  PTT KEY  ○
7  Accessory Jack 
○
2  SK1(Side KEY)  ○
8  Microphone 
○
3  Channel Selector Knob  ○
9  Battery Latch 
○
4 Speaker  ○
10  Antenna 
○
5  LED Indicator  ○
11  Belt Clip 
○
6   Radio On-Off/ Volume Control Knob  ○
12  Battery 

10 
Programmable Keys 
For enhanced convenience, you may request your dealer to program the keys SK1 as shortcuts to the 
functions listed below:   
No.   Shortcut Keys Description 
1 Zone Up 
2 Zone Down To select a desired zone quickly 
3  Adjust Power Level To adjust power level quickly   
4  Talk Around   To directly communicate with other radios 
5  Monitor  
6  Monitor Momentary   
To adjust the condition for incoming signal 
match 
7  Squelch Off   
8  Squelch Off Momentary   
To always unmute speaker no matter whether 
carrier is present or not 
9  Scan   To receive signals on other channels 
10  Nuisance Temporary Delete   To temporarily ignore unwanted channel 
activity 
11  Adjust Squelch Level   
To temporarily adjust the squelch threshold 
required for the radio to unmute 
12  Battery Power Indicator To indicate the battery strength 
13 
Scrambler /Encrypt  To encrypt your voice so as to guarantee 
privacy of your communication 
14 
Smart Call 1-5   To send voice-free signaling (dedicated for 
5-Tone)   
Note:    
(1) Long and short press of a key can be assigned with different functions by your dealer.   
(2) The SK1 is programmed as the Battery Power Indicator key by default, and is programmable by 
your dealer.   

11 
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. 

 12
Charge Indicator 
LED Indicator Charge Status 
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. 

 13
To remove the battery, turn off the radio first. Then slide the battery latch upwards to unlock the battery.   
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.   

 14
 Caution: When you are using an external accessory, waterproof performance of the radio may get 
affected.  

15 
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 flashes red  Powering off 
LED glows red.   Transmitting 
LED glows green.   Receiving 
LED flashes green slowly.     Scanning 
LED glows orange.   Call ended (within the preset time period) 

 16
Basic Operations 
Turning the Radio On/Off 
PD502 U(1): 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 
PD502 U(1): 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   
After turning the radio on, 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.   

 17
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.   

 18
 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. 

 19
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:   
  During scanning, the LED flashes orange. 
  When activities are detected on a channel, the radio will stay on the channel to receive current 
activities, and the LED glows green. 
  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.   
  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). 

 20
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). 
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.   

 21
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 
Scrambler /Encrypt  
The Scrambler/Encrypt feature can encrypt your audio signals to prevent eavesdropping. Thus privacy of 
your communication is guaranteed.   
Operation:   
  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).   
  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 

 22
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. 
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. 
MIC AGC 
If enabled via the programming software, your radio will process the audio signals during transmission, 
providing improved audio for the receiving radio.   
Radio Registration Service   
If enabled via the programming software, your radio will automatically register in the system within a 
certain period after power-on. Then it can acquire online information of other radios via accessing specific 
servers within the valid registration period.   

 23
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.   

 24
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.   
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.   

 25
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.   

 26
Optional Accessories 
The following items are the main optional accessories for the product, and please consult your local 
dealer for more other accessories. 
Remote Swivel Earset EHM20 Remote C-Earset   
EHM19 
PTT&MIC cable(for use with 
Receive-Only Earpiece) ACM-01
Earbud with remote 
on-mic PTT ESM14
Earpiece with Transparent 
Acoustic Tube EAM17 
Receive-Only Earbud   
ES-01 
Receive-Only Earpiece with 
Transparent Acoustic Tube ES-02 
Receive-Only C Style 
Earloop EH-01 
Receive-Only Ajustable 
Earhook with Swivel Speaker 
EH-02 
Earbud with on-mic 
PTT EAM12 
Earset with in-line PTT EHM18  Earbud with on-mic PT
T
ESM12 
D-Earset with in-line PTT 
EHM15 
2-wire Surveillance 
Earpiece with 
Transparent Acoustic 
Tube (black) EAM13
3-wire Surveillance Earpiece with 
Transparent Acoustic Tube 
(beige) EAM15 
Remote speaker 
microphone SM08M3

 27
MCU Multi-unit Rapid-rate Charger 
(for Li-Ion/Ni-MH batteries) MCA08 
Battery Analyzer MCA05 PS7501 AC/DC Adapter Remote speaker micropho
n
(IP55) SM13M1 
 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.