Hytera Communications EPRADGU1 Professional Radio Access Device User Manual
Hytera Communications Corporation Limited Professional Radio Access Device
User manual
Preface 
Thanks for your favor in our product. This manual provides guidance for you to use the product.   
This manual is applicable to the following product:   
E-PRAD(G) 

Icon Conventions 
The following icons are available through this manual: 
Caution: Indicates situations that could cause data loss or equipment damage.   
Note: Indicates references that can further describe the related topics.   
Copyright Information 
Hytera is the trademark or registered trademark of Hytera Communications Corporation Limited (the 
Company) in the People's Republic of China (PRC) and/or other countries or areas. The Company 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 product described in this manual may include the Company's computer programs stored in memory or 
other media. Laws in PRC and/or other countries or areas protect the exclusive rights of the Company 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 the Company's computer programs. The 
Company's computer programs may not be copied, modified, distributed, decompiled, or 
reverse-engineered in any manner without the prior written consent of the Company. 
Disclaimer 
The Company 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 technological development. No part of this manual may be copied, modified, translated, or 
distributed in any manner without the prior written consent of the Company. 
We do not guarantee, for any particular purpose, the accuracy, validity, timeliness, legitimacy or 
completeness of the third-party products and contents involved in this manual. 
If you have any suggestions or would like to receive more information, please visit our website at: 
http://www.hytera.com. 
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 
must be at least 40cm away from human body. 
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. 
If not installed and used in accordance with the instructions, it may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not occur in a particular installation. 
Verification of harmful interference by this equipment to radio or television reception can be determined by 
turning it off and then 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 different circuit to that of the receiver's outlet. 
Consult the dealer or an experienced radio/TV technician for help. 
Operation is subject to the following two conditions:   
This device may not cause harmful interference. 
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. 
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 not more than 50% of the 
time and always adhere to the following procedures: 
  Antenna gain must not exceed 3.5dBi. 
  The antenna must be installed complying with the requirements of manufacturer or supplier, and it 
Compliance with RF Exposure Standards 
Hytera's 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 2.1091 
American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) 
C95. 1:2005; Canada RSS102 Issue 5 March 2015   
Institute of Electrical and Electronic Engineers (IEEE) C95.1:2005 Edition 
stance 40cm between the antenna & 
ISEDC Statement 
This device complies with Innovation, Science and Economic Development Canada Compliance 
license-exempt RSS standard(s). Operation is subject to the following two conditions: 
This device may not cause harmful interference. 
This device must accept any interference received, including interference that may cause undesired 
operation. 
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 ne doit 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 
ISEDC Radiation Exposure Statement:   
This device must be restricted to work related operations in an Occupational/Controlled RF exposure 
Environment.  
This equipment should be installed and operated with minimum di
your body. 
ISEDC exposition aux radiations:   
Ce dispositif doit être limité aux opérations liées au travail dans un environnement d'exposition RF 
professionnel/contrôlé. 
Cet équipement doit être installé et distance entre le antenne et votre 
corps. 
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: 
 2014/53/EU 
Please note that the above information is applicable to EU countries only. 
The maximum antenna gain is 3.5dBi, which is calculated in the EIRP. The distance from observation point 
to the antenna is 50cm. 
 utilisé avec un minimum de 40cm de 

Restrict use warning: 
i 
Contents 
1. Packing List ........................................................................................................................................... 1
2. Product Overview .................................................................................................................................. 1
3. Installation ............................................................................................................................................. 3
4. Basic Operations ................................................................................................................................... 3
4.1 Powering on ....................................................................................................................................... 3
4.2 Powering off ....................................................................................................................................... 3
4.3 Establishing GSM Link ....................................................................................................................... 3
4.4 Switching Mode ................................................................................................................................. 3
5. Troubleshooting .................................................................................................................................... 4
6. Care and Cleaning ................................................................................................................................. 6
7. Optional Accessories ............................................................................................................................ 6
8. Warranty ................................................................................................................................................. 6 

1900MHz public network 
Connects to 850MHz /
1 
1. Packing List 
Please unpack carefully and check that all items listed below are received. If any item is missing or 
damaged, please contact us or your dealer.   
Name  Qty.  Name  Qty. 
Main unit  1  AC power cord  1 
RF cable  1  DC power cord  1 
Network cable    1  User manual  1 
GSM antenna  1  DMR antenna  1 
Note 
Pictures listed in this manual are for reference only.   
2. Product Overview 
No.  Component  Description 
1  Public network 
antenna interface  antenna.  
2  SIM card interface  Receives SIM card.   
3 Debug interface Reserved 
4 Ethernet port  10 MHz/100 MHz adaptive network port, used for program update, log 
output and connection to center. 
5  Private network 
antenna interface 
Connects to private network antenna. The antenna frequency band is 
subject to actual situation. 
6  DC power inlet  Provides 13.6V±15%(5A) DC power.   
7  AC power inlet  Provides 100–240 V (0.7A)AC power.   
8 Power switch  The switch has three positions: AC, OFF, and DC (from up to down 
respectively). 
9 Type button  After the device is powered on, press this button to select the mode. For 

2 
No.  Component  Description 
details, see 4.4 
10  RESET button  Press this button to restart the device.   
11 CONFIG button 
Press and hold this button for 3s to restore the factory settings.   
Press and hold this button and power on the device to enter the private 
network programming mode.   
12  LED indicator  For details, see the following table.   
13 Programming port 
Connects to the programming cable for device programming or upgrade 
(connection to the palm microphone is not supported). 
14 
Operating 
Temperature 
Range 
-20~50℃ 
The LED indicators are described in the following table.   
Icon  Color  Status  Description 
RUN Green 
Flashing slowly  The device works properly. 
Flashing quickly  The device is updating the program. 
On  GSM link is established successfully (the device is in test 
mode when the RUN, RX and TX are on at the same time). 
ALM Red 
On  DMR network component malfunctions. 
Off  DMR network component works properly.   

3 
Icon  Color  Status  Description 
RX  Green  On  The device is receiving data of the private network. re 
TX  Red  On  The device is transmitting data of the private network.   
 Green On  Indicates the GSM signal strength. More bars indicate 
stronger signal. 
3. Installation 
You only need to correctly connect cables to E-PRAD(G) before using it. 
4. Basic Operations 
4.1 Powering on 
Toggle the power switch to the "AC" or "DC" position. 
4.2 Powering off 
Toggle the power switch to the "OFF" position. 
4.3 Establishing GSM Link 
The E-PRAD(G) is able to establish a GSM link. Do as follows: 
1.  Insert the SIM card. 
2.  Power the device on and check indicators' color. 
If RUN indicator is on and ALM indicator is off, it indicates that GSM link is established successfully. 
More signal bars indicate stronger signal. 
4.4 Switching Mode 
Press TYPE to select the operation mode of the device access according to actual situation.   

4 
 0: PDT or DMR digital conventional, for interconnection between private and public networks, 
determined before leaving the factory 
  1: analog conventional, for interconnection between private and public networks 
  2: MPT trunking, for interconnection between private and public networks 
  3: PDT or DMR digital trunking, for interconnection between private and public networks, determined 
before leaving the factory 
 4: PDT or DMR digital conventional, for interconnection between private network and center, 
determined before leaving the factory 
  5: analog conventional, for interconnection between private network and center   
  6: MPT trunking, for interconnection between private network and center 
  7: PDT or DMR digital trunking, for interconnection between private network and center, determined 
before leaving the factory 
  C: 2G, for interconnection between public network and center 
5. Troubleshooting 
Phenomena  Possible Cause  Solution 
Programming 
fails.  
E-PRAD(G) is not in the 
programming mode. 
Press and hold TYPE, and start E-PRAD(G). Release 
TYPE when RUN indicator is on. TX and RX indicators are 
on at the same time, indicating that E-PRAD(G) enters the 
programming mode.   
GSM link 
cannot be 
established.  
GSM signal is poor. 
If GMS signal bars are off, check whether public network 
antenna is connected. If it is connected but GSM signal is 
still poor, you are advised to move the public network 
antenna or device to an open area. Tests show that the 
drop rate is relatively high when the number of signal bars 
is 3 or less (in this case, the BS has a signal strength of 
about -75dBm) 
E-PRAD(G) has 
already been 
connected to other 
devices. 
If RUN indicator is on, GSM connection is established. In 
this case, stop ongoing communication or restart the 
device.  
GSM whitelist feature is 
enabled.  
Add the number of calling device to the whitelist.   
When the auto-call feature is enabled, the E-PRAD(G) 

5 
Phenomena  Possible Cause  Solution 
cannot answer any incoming call and can only call the 
preset number. 
Stand-alone 
Network 
Management 
System cannot 
access the 
device. 
The PC on which the 
Standalone Network 
Management System 
runs and device are not 
on the same network 
segment 
Change the PC IP address to the same network segment 
as the device IP address. 
The device IP address is "192.168.40.110" by default. You 
can press and hold CONFIG button to restore the factory 
settings. 
Voice 
communication 
fails when GSM 
network is 
connected.   
The device frequency is 
inconsistent with the 
portable radio 
frequency.  
Set the device frequency to be consistent with the portable 
radio frequency.   
In the PDT/DMR mode, 
interconnection group 
call number of the 
device is inconsistent 
with that of the portable 
radio.  
Set the group call number of the device to be consistent 
with that of the portable radio.   
The device’s vocoder is 
inconsistent with the 
portable radio’s 
vocoder.  
Set the device’s vocoder to be consistent with the portable 
radio’s vocoder.   
In the PDT/DMR or 
MPT trunking mode, 
private network 
registration fails. 
Check device parameters to ensure that the device 
registers with the PDT/DMR or MPT trunking system 
successfully. 
In the conventional 
mode, channels are 
configured incorrectly. 
The channel 1 of area 1 must be set to digital channel, and 
channel 2 of area 2 must be set to analog channel.   
In private network 
settings, whitelist 
feature is enabled.   
Add the group call number of the calling portable radio to 
the whitelist. 

6 
Phenomena  Possible Cause  Solution 
ALM indicator is 
on.  
Trunking system 
registration fails.    Check whether device parameters are correctly configured. 
The device is not 
supplied with power 
properly.  
Send the device back for repair. 
If the above solutions cannot solve your problems, or you may have some other queries, please contact us 
or your local dealer for more technical support.   
6. Care and Cleaning 
To guarantee optimum 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. 
  Keep the product away from substances that can corrode the circuitry. 
Product Cleaning 
Caution 
Cut off the power supply before 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 a non-woven cloth with neutral cleanser to clean the device after long-time use. Do not use 
chemical preparations such as stain removers, alcohol, sprays or oil preparations, so as to avoid 
potential damage on the surface. 
  Make sure the product is completely dry before use. 
7. Optional Accessories 
Contact your local dealer for the optional accessories of the product. 
Caution 
Use the accessories specified by the Company only; otherwise, we shall not be liable for any losses 
or damages arising out of the use of any unauthorized accessories. 
8. Warranty 
For Hytera products, if any defects arise in material or manufacturing process under normal operation and 
maintenance, you can enjoy warranty service stipulated in the contact from the purchase date on.