Hytera PD502 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:
PD502 U(1) Digital Portable Radio
Instructional Icons
The following icons are available through this manual:

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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

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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

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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

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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

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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.

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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

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

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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 Charger PowerAdapter
Antenna Belt Clip Strap
RadioUnit 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.

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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

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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
1Zone 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.

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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
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.

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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.

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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.

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

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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)

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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.

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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 anAll 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.

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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.

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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).