Hytera Communications MD78XU2 Digital Portable Radio User Manual

Hytera Communications Corporation Ltd. Digital Portable Radio

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MD78XU2 User Manual HTML Version

User Manual

Preface

Thank you for purchasing Hytera MD78X/78XG Series DMR Digital Mobile Radio. As a product built to

the DMR standard, MD78X/78XG is endowed with ergonomic design, all-round digital functions and

remarkable quality to increase your management efficiency 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.

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.

PTT ID

PTT ID, namely radio identity, allows a radio with display or the control center to identify the calling

party.

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 and

contact information where the user can obtain Canadian information on RF exposure and

compliance.

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:

● Gain of antenna must not exceed 3.5dBi for VHF and 5.5dBi for UHF.

● Antenna Installation: Install the mobile antenna at least 100 cm away from your body, in

accordance with the requirements of the antenna manufacturer/supplier.

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 ................................................................................................................6

Product Overview .....................................................................................................................................7

Front Panel........................................................................................................................................7

Rear Panel ........................................................................................................................................8

Programmable Keys..........................................................................................................................8

Installation ..............................................................................................................................................10

Instructions......................................................................................................................................10

Installation Tools..............................................................................................................................10

Installation Steps .............................................................................................................................10

Status Indication .....................................................................................................................................12

LCD Icon .........................................................................................................................................12

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...........................................................................................................15

Call .........................................................................................................................................................16

Private Call ...........................................................................................................................16

Group Call ............................................................................................................................17

All Call ..................................................................................................................................17

Calls on Analog Channels ....................................................................................................17

Menu Navigation ....................................................................................................................................18

Contact .................................................................................................................................18

Message ...............................................................................................................................19

Call Logs ..............................................................................................................................20

Scan................................................................................................................................................20

Zone ................................................................................................................................................21

Settings ...........................................................................................................................................22

Accessories.....................................................................................................................................23

Functions and Operations ......................................................................................................................25

Home Screen ..................................................................................................................................25

Scan................................................................................................................................................25

Public Address ................................................................................................................................26

Talk Around .....................................................................................................................................26

Monitor .................................................................................................................................26

Squelch Off ..........................................................................................................................27

Emergency ......................................................................................................................................27

Ignition Sense .................................................................................................................................30

Scrambler /Encrypt .........................................................................................................31

Busy Channel Lockout ....................................................................................................................31

Time-out Timer (TOT)......................................................................................................................32

Pseudo Trunking ...................................................................................................................32

MIC AGC .........................................................................................................................................32

Emergency Footswitch ....................................................................................................................32

Channel Steering.............................................................................................................................33

Signaling Introduction.............................................................................................................................34

HDC1200 ........................................................................................................................................34

Troubleshooting......................................................................................................................................35

Care and Cleaning .................................................................................................................................37

Optional Accessories..............................................................................................................................38

Appendix ................................................................................................................................................39

Input Method ...................................................................................................................................39

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.

Palm Microphone Microphone Hanger and Screws

Mounting Bracket Kit GPS Antenna

Fuse Power Cord

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

Note: To realize functions enabled by inputting, please purchase a palm microphone with keypad.

Go to Optional Accessories for more details.

Product Overview

Front Panel

No. Part Name No. Part Name

○

Volume Control / Channel

Selector Knob

○

2 LED Indicator

○

3 LCD Display ○

4 OK/Menu Key

○

5 Back Key ○

6 Power On/Off Key

○

7 Up Key ○

8 Down Key

○

9 Speaker ○

10 Programmable Keys

○

11 Microphone Jack ○

Microphone Installation

Index

Rear Panel

No. Part Name No. Part Name

○

1 RF Antenna Connector ○

2 Power Inlet

○

3 Accessory Jack ○

4 GPS Antenna Connector

Programmable Keys

For enhanced convenience, you may request your dealer to program the keys P1, P2, P3, P4, ,

and as shortcuts to the functions listed below:

No. Shortcut Keys Description

1 Zone Up

2 Zone Down

To select a desired zone quickly

3 Contact List To access the menu “Contact List” quickly

4 Message To access the menu “Message” quickly

5 Call Log To access the menu “Call Logs” quickly

6 Adjust Power Level To adjust power level quickly

7 Public Address

To make public address via the external

speaker quickly

8 Talk Around To directly communicate with other radios

9 Monitor

10 Monitor Momentary

To adjust the condition for incoming signal

match

11 Squelch Off

12 Squelch Off Momentary

To always unmute speaker no matter

whether carrier is present or not

13 Home Screen

To quickly return to the previous menu or

home screen

14 Scan To receive signals on other channels

15 Nuisance Temporary Delete

To temporarily ignore unwanted channel

activity

16 Emergency To summon help in emergent situations

17 Adjust Squelch Level

To temporarily adjust the squelch

threshold required for the radio to unmute

18 Scrambler /Encrypt

Scrambler: To encrypt your voice so as to

guarantee privacy of your communication

Encrypt: To encrypt your voice and

message 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） is programmed as the Emergency key by default, and is programmable by your dealer.

Installation

Before you install the radio in a vehicle, be sure to read the following instructions carefully:

Instructions

z The radio operates with cathode-grounded power supply of 13.6V ± 15％ only. Please check

polarity and voltage of the power supply on the vehicle before you install the radio.

z Please check how long the screws will extend from the bottom surface of the radio, before you

install the radio. Drill the mounting hole cautiously to avoid damage to the vehicle wiring and other

parts.

z Please connect Hytera supplied antenna and power cord to the radio, before you install it in the

bracket. And make sure the antenna and power cord is dedicated for Hytera digital radios.

z Install the radio with Hytera supplied mounting bracket, to avoid radio looseness in case of

accidents. The loose radio may cause bodily injury.

z Install the radio in a location where it’s easy to reach the front panel controls.

z Please make sure there’s sufficient space at back of the radio for wiring.

z When the fuse for DC power cord needs replacement, it must be replaced by a fuse with the same

specification.

Installation Tools

z Electric drill

z Cross head screwdriver

z Hex socket sleeve (used for 4.8*20mm self-tapping screws)

Installation Steps

1. Install the bracket in a location where it’s easy to operate the radio.

2. Connect accessories such as antenna and power cord to the radio.

3. Slide the radio into the mounting bracket and secure it using the locking knobs.

4. Install the microphone hanger in a location where it can be reached easily.

5. Plug the palm microphone into the microphone jack on the front panel (but at first align the triangle

index on the palm microphone with the microphone installation index), and place it on the hanger

when you do not use it.

No. Part Name No. Part Name

○

1 Radio Unit ○

2 Locking Knobs

○

3 Mounting Bracket ○

4 4.8 × 20 mm Self-tapping Screws

○

5 Palm Microphone ○

6 4 × 16mm Self-tapping Screws

○

7 Microphone Hanger ○

8 Power Inlet

○

9 Black Power Cord ○

10 Red Power Cord

○

11 Fuse ○

12 RF Antenna Connector

⑬ GPS Antenna Connector

Status Indication

LCD Icon

 Status Icon

Icon Name Icon Radio Status

No signal

RSSI

More bars indicate better signal strength

New message/unread message

Message Icon

InBox is full

Scanning is in progress

Scanning pauses on a non-priority channel

Scanning pauses on Priority Channel 1

Scan Icon

Scanning pauses on Priority Channel 2

Low TX power for the current channel

TX Power Icon

High TX power for the current channel

Monitor Icon The Monitor feature is active

Speaker Icon The speaker is unmuted

Emergency Icon

The Emergency mode (other than secret

emergency) is active or an emergency message is

received

The knob currently operates in channel selection

mode

Knob Operation

Mode Icon

The knob currently operates in volume adjustment

mode

GPS Icon

The GPS feature is active, and valid GPS data is

received

The GPS feature is active, but no valid GPS data

is received

Scrambler/Encrypt

Icon

The Scrambler/Encrypt feature is active

Note: The description related to the GPS feature in this manual is applicable to MD78XG only.

 Operation Mode Icon

Icon Name Icon Operation Mode

Direct Mode: Under this mode, radios

communicate with each other directly Operation Mode

Icon

Repeater Mode: Under this mode, radios

communicate with each other via a repeater

LED Indicator

The 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)

Basic Operations

Turning the Radio On/Off

To turn the radio on, long press the Power On/Off key until the radio shows power-up screen and

sounds power-up alert, and the LED flashes green. To turn the radio off, press the Power On/Off key.

Adjusting the Volume

When the Volume Control / Channel Selector knob operates in volume adjustment mode (the radio

displays the icon ), rotate the 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 up to 64 zones, each with a maximum of 16 channels. You may select a zone through any

of the following methods:

1. Through menu selection

Go to the menu “Zone”, and use the Up/Down key to select your desired zone.

2. Through the function keys

You may quickly toggle to your desired zone by pressing the programmed Zone Up or Zone Down key.

Note: You dealer may designate the power-up zone and channel. If not, the radio will enter the

zone and channel last used.

Selecting a Channel

Press the Volume Control / Channel Selector knob to switch it to channel selection mode (the radio

displays the icon ), and then rotate the knob to select your desired channel. Alias of the current

channel will appear in the home screen.

Note: The knob is in volume adjustment mode by default, and will return to this mode in 5 seconds

after you select a 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 channels

through the Volume Control / Channel Selector knob.

Call

To ensure optimal volume of the receiving radio, hold the palm microphone approximately 2.5 to 5

centimeters away from your mouth.

Private Call

Transmitting a Private Call

You may transmit a Private Call through any of the following methods. When transmitting a Private Call,

the icon will appear.

 Transmitting a call to the preset contact

In the home screen, hold down the PTT key on the palm microphone 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.

 Transmitting a call through Contact List or Call Logs

（1） Go to “Contact -> Contact List”, or go to “Call Logs” and access the

Outgoing/Incoming/Missed list.

（2） Use the Up/Down key to select the Private Call contact you want to call.

（3） Hold down the PTT key to transmit the Private Call.

 Transmitting a call through Manual Dial

（1） Go to “Contact -> Manual Dial”.

（2） Input a Private Call number you want to call using the microphone with a keypad.

（3） Hold down the PTT key to transmit the Private Call.

Receiving and Responding to a Private Call

When a Private Call is received, your radio will display the icon .

You may hold down the PTT key within the preset time period to call back. If you do not respond to a

received Private Call, your radio will display the missed call icon .

Group Call

Transmitting a Group Call

You may transmit a Group Call through any of the following methods. When transmitting a Group Call,

the icon will appear.

 Transmitting a call to the preset contact

In the home screen, hold down the PTT key to transmit a Group Call to the Group Call contact

preset for the current channel.

 Transmitting a call through Contact List

（1） Go to “Contact -> Contact List”.

（2） Use the Up/Down key to select the Group Call contact you want to call.

（3） Hold down the PTT key to transmit the Group Call.

Receiving and Responding to a Group Call

When a Group Call is received, your radio will display the icon .

You may hold down the PTT key within the preset time period to call back.

All Call

Transmitting an All Call

Methods are the same as those in Transmitting a Group Call. When transmitting an All Call, the icon

will appear.

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, your radio will display the icon .

Note: You cannot respond to an All Call.

Calls on Analog Channels

To transmit on an analog channel, hold down the PTT key and speak into the microphone. To receive,

release the PTT key.

Menu Navigation

Contact

To access this item, press the Menu key in the home screen and then select “Contact”.

 Contact List

You can save up to 200 entries in the list. To access this item, select “Contact -> Contact List” or press

the shortcut key for Contact List.

Editing a Contact

You can edit the number and alias of each Private Call contact.

Viewing a Contact

You can view details of each contact.

Deleting a Contact

You can delete a Private Call contact. However, please note that you can not delete the contact

when there is only one entry left in the list. In addition, the Private Call contact preset on the

currently used channel cannot be deleted.

 New Contact

You can add a Private Call contact to the contact list. The number and alias of each contact must be

unique, and the available number range is 1-16776415.

 Manual Dial

You can manually input the Private Call number for calling.

Message

To access this item, press the Menu key in the home screen and then select “Message”, or press the

shortcut key for Message directly.

 New Msg

You can create new text message (256 characters at most) and send it to an individual user or to a talk

group.

 Quick Text

Under this option there are some text messages (10 entries at most) preset by your dealer. You can

choose to edit and send any entry.

 InBox

The InBox can save up to 20 received messages. When the InBox is full, the icon will appear, and

the earliest message will be overwritten by the latest one automatically.

For each message, you can choose to perform any of these operations: Reply, Forward, View Details

and Delete.

To delete all messages in the InBox, select “Message -> InBox -> Delete All”.

 OutBox

The OutBox can save up to 20 sent messages. When the OutBox is full, the earliest message will be

overwritten by the latest one automatically.

For each message, you can choose to perform any of these operations: Resend, Forward, View Details

and Delete.

To delete all messages in the OutBox, select “Message -> OutBox -> Delete All”.

 Drafts

The Drafts can save up to 20 draft messages. When the Drafts is full, the earliest message will be

overwritten by the latest one automatically.

For each message, you can choose to perform any of these operations: Send, Save and Delete.

To delete all messages in the Drafts, select “Message -> Drafts -> Delete All”.

Call Logs

To access this item, press the Menu key in the home screen and then select “Call Logs”, or press the

shortcut key for Call Logs directly.

This radio can save up to 10 private call entries in the Outgoing/Incoming/Missed list respectively. When

the Outgoing/Incoming/Missed list is full, the earliest entry will be overwritten by latest one automatically.

After accessing a list and selecting an entry, you can perform any of these operations: hold down the

PTT key to initiate a call; add it to Contact List; or delete it.

To delete all entries in the Outgoing/Incoming/Missed list at a time, select “Call Logs ->

Outgoing/Incoming/Missed -> Delete All”.

Scan

To access this item, press the Menu key in the home screen and then select “Scan”.

 Scan On/Off

The Scan feature allows you to listen to communication activities on other channels so that you can keep

a close track of your team members. This option is used to enable or disable the function.

 Scan List

You can request your dealer to create a scan list for each channel. Each list may contain 32 channels at

most (either digital channel or analog channel is OK). After accessing the list, you can perform any of the

following operations:

Adding a Channel

To include a new channel into the active scan list.

Editing Priority Channel

To set the selected channel as a non-priority or as a priority channel. If you are interested in

activities on a channel, you can set it as a priority channel, which will be scanned more frequently

than a non-priority channel.

Each scan list may contain two priority channels at most. indicates priority channel 1, and

indicates priority channel 2.

Deleting a Channel

To remove a channel from the active scan list. However, the first channel in the list can not be

deleted.

Zone

To access this item, press the Menu key in the home screen and then select “Zone”.

This radio supports up to 64 zones. You can use this menu to select your desired zone.

Settings

To access this item, press the Menu key in the home screen and then select “Settings”.

 Radio Set

You can optimize your radio performance by customizing related parameters according to actual needs

and your preferences.

Power Level

This option allows you to set TX power level. Alternatively, you can change the power level by

pressing the shortcut key for Adjust Power Level in the home screen.

There are two levels available: High (indicated by ) and Low (indicated by ). High power

level enables you to communicate with farther team members.

Note: Power level should be set for each channel individually.

Squelch

This option allows you to select an appropriate squelch level. Alternatively, you can change the

squelch level by pressing the shortcut key for Adjust Squelch Level in the home screen. There are

three levels available: Tight, Normal and Open. The default squelch level is “Normal”, and is often

used in low noise environment.

And generally, “Tight” is used in high noise environment. It requires stronger signal for the radio to

unmute. However, if the squelch level is set to Open, the speaker will keep unmuted irrespective of

the decoding conditions.

Scrambler /Encrypt

To set whether to enable the Scrambler/Encrypt feature.

Language

To set the language in which all interface information is displayed.

Backlight

To set the backlight parameters. There are three options available: On, Off and Timer. The timer is

programmed by your dealer, with an available duration of 5-60 seconds.

Brightness

To set the display brightness. You can raise or lower it using the Up/Down key.

LED

To set whether to enable LED indication.

Tone

To set alert tones for your radio. You can set the following tones:

Radio Silent: to set whether the radio will give tone indication. If Silent On is selected, all tone

indication will be cancelled.

Talk Permit: to set whether the radio will give tone indication for transmission. The following options

are available: Disable (no tone indication for transmission), Digital Only (tone

indication for transmission on digital channels only), Analog Only (tone indication for

transmission on analog channels only), and Enable (tone indication for transmission

on both analog and digital channels).

Private Ring: to set whether the radio will give tone indication when it receives a private call.

TextMsg Ring: to set whether the radio will give tone indication when it receives a message.

Keypad: to set whether the radio will give tone indication when you are making keypad operations.

 Device Info

With this option, you can view basic information of your radio, including serial number, radio model,

frequency range and firmware version, etc.

Accessories

To access this item, press the Menu key in the home screen and then select “Accessories”.

 GPS

Position

With this option, you can view longitude, latitude, time, date, speed, altitude and SA (satellite)

information of your radio.

GPS Text Msg

If the GPS feature is enabled via the programming software, you can send the GPS text

message to your desired contact. Operation:

1. Select “GPS Msg”, and press the OK key to access the menu “Contact List”.

2. Use the Up/Down key to select a desired contact.

3. Press the OK key to send the GPS message to the selected contact.

Time Zone

You can choose your time zone to correct the received GPS time. We recommend you to set the

time zone before your initial use of this feature.

Functions and Operations

Home Screen

The feature allows you to quickly return to the previous menu or the home screen.

Operation:

In the editing screen, press the programmed Home Screen key, and the radio exits the screen and

returns to the previous menu immediately; in other screens, press the key, and the radio returns to the

home screen immediately.

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, you can select “On” from the menu “Scan”; or

Press the programmed Scan key in the home screen; 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 LCD displays the icon , and the LED flashes orange slowly.

z When activities are detected on a channel, the radio will stay on the channel to receive current

activities. If your radio stays on a non-priority channel, the LCD will display icon ; if on

Priority Channel 1 or Priority Channel 2, the LCD will display icon or icon

respectively.

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, you can select “Off” from the menu “Scan”, or press the programmed

Scan key again.

Public Address

This feature allows public address via the external speaker. After the feature is enabled, your voice will

not be transmitted, but output via the external speaker (connected to the accessory jack on the rear

panel) if you hold down the PTT key and speak.

Operation:

1. Press the programmed Public Address key to enable the feature.

2. Hold down the PTT key and speak into the microphone. Then your voice will be broadcasted clearly

via the external speaker.

3. To disable the feature, press the Public Address key again.

Note: When this feature is enabled, you can neither communicate with other users, nor enter the

menu.

Talk Around

You can continue to communicate in DM mode by pressing the programmed Talk Around key, when

your repeater malfunctions, or when your radio is out of the repeater’s range but within talking range of

other radios.

Operation:

Press the programmed Talk Around key to switch between DM mode and RM mode.

Monitor

To adjust match conditions for signal receiving, you can enable the feature “Monitor”.

Operation:

 Press the programmed Monitor key to enable the feature, and the radio displays icon . To

disable the feature, press this key again.

 Hold down the programmed Monitor Momentary key to enable the feature, and the radio displays

the icon . To disable the feature, release this key.

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. Then the radio displays the icon

and sounds background noise. To disable the feature, press this key again.

 Hold down the programmed Squelch Off Momentary key to enable the feature. Then the radio

displays the icon and sounds background noise. To disable the feature, release this key.

Emergency

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 and

display icon .

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

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 icon

appears, 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. When the icon ( ) or

() appears, 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).

Operation Methods for Analog Emergency

 Alarm (None & HDC1200)

Operation: Press the programmed Emergency key to send alarm information. The radio displays the

icon and text information “Sending Alarm”, with red LED glowing. (None: If “Local

Emergency Alarm” is enabled via the programming software, an alarm tone will sound.)

Two methods are available for you to exit the Emergency mode:

1. Once the emergency cycles expire, the radio will exit the Emergency mode automatically.

2. Long press the programmed Emergency key.

 Alarm with Call (None & HDC1200)

Operation:

1. Press the programmed Emergency key to send alarm information. The radio displays the icon

and text information “Sending Alarm”, with red LED glowing. (None: If “Local Emergency

Alarm” is enabled via the programming software, an alarm tone will sound.)

2. When the icon appears, you can speak into the microphone to make an emergency call.

3. When the icon appears, you can receive. And when a call is received, the icon

appears.

4. If the preset Voice Cycles expire, you can hold down the PTT key to make the emergency call again

(the radio displays the icon , with red LED glowing). After the emergency call is transmitted,

release the PTT key to receive (the radio displays icon , with LED flashing orange rapidly). And

when a call is received, the icon appears. (HDC1200 only)

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 radio displays the icon

2. If the feature “Alarm with Call to Follow” is enabled, you can speak into the microphone to make an

emergency call when the radio displays the icon .

3. When the icon appears, you can receive. And when a call is received, the icon

appears.

4. If the preset Voice Cycles expire, you can hold down the PTT key to make the emergency call again

(the radio displays the icon , with red LED glowing). After the emergency call is transmitted,

release the PTT key to receive (the radio displays the icon , with LED flashing orange rapidly).

And when a call is received, the icon appears.

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, and the radio displays the icon

2. If the feature “Alarm with Call to Follow” is enabled, you can speak into the microphone to make an

emergency call when the radio displays the icon .

3. When the icon appears, you can receive. And when a call is received, the icon

appears.

4. If the preset Voice Cycles expire, you can hold down the PTT key to make the emergency call again

(the radio displays the icon , with red LED glowing). After the emergency call is transmitted,

release the PTT key to receive (the radio displays icon , with LED flashing orange rapidly). And

when a call is received, the icon appears.

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.

Ignition Sense

The following options are available via the vehicle ignition. You may ask your dealer to assign any one to

your radio.

¾ PTT Disable: The PTT key is enabled or disabled by following the ignition sense.

Operation:

To enable the PTT key, start the engine; to disable the PTT key, stop the engine.

¾ Ignition or Switch: The radio powers on or off by following either the ignition sense or the Power

On/Off key.

Operation:

To power on the radio, start the engine or long press the Power On/Off key; to power it off, stop the

engine or press the Power On/Off key.

¾ Ignition Only: The radio powers on or off by following the ignition sense only. The Power On/Off

key does not work.

Operation:

To turn on the radio, start the engine; to turn it off, stop the engine (The Power On/Off key does not

work).

Scrambler /Encrypt

The Scrambler/Encrypt feature can encrypt your audio signals to prevent eavesdropping. Thus privacy

of your communication is guaranteed.

This Encrypt feature can encrypt your audio signals and messages to prevent eavesdropping. Thus

privacy of your communication is guaranteed.

Operation:

 On an analog channel, go to “Main Menu -> Settings -> Radio Set -> Scrambler” and select “Enable”

or “Disable; on a digital channel, go to “Main Menu -> Settings -> Radio Set -> Encrypt” and select

“Enable” or “Disable.

 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 terminals on the same channel. If you hold down the PTT key while the channel is in use,

your radio will keep beeping and display text information “Channel Busy!”, 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

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.

Emergency Footswitch

This feature must be realized through further development. After successfully developed, you should

request your dealer to enable it via programming software. This feature is quite useful in emergent

situations to avoid any unexpected loss.

Note: Emergency footswitch will be unavailable if the Emergency feature is not enabled on the

current channel.

Channel Steering

This feature must be realized through further development. After successfully developed, you should

request your dealer to enable it via programming software. You can switch channels accurately and

quickly with this feature.

Note: If this feature is enabled, you cannot switch channels via front panel operation.

Signaling Introduction

The radio supports the following signaling. You can ask your dealer to make appropriate settings on your

radio. For detailed information, please contact your dealer.

HDC1200

The HDC1200 signaling is compatible with the MDC1200 signaling, and realizes functions such as PTT

ID (Encoding & Decoding), Emergency (Encoding & Decoding) and Selective Call (Encoding &

Decoding).

Encoding:

1. Hold down the PTT key during normal voice communication to send PTT ID.

2. Go to the menu “Contact List” and select a required contact. Then hold down the PTT key to send a

selective call (Private Call/Group Call/All Call).

For encoding, the radio will provide the following indications:

 PTT ID/Selective Call: Your dealer can program whether the radio sounds side tone during encoding

or sounds beeps after encoding.

 Selective Call: During encoding, the LED glows red, and the LCD displays the appropriate call icon

(Private Call: ; Group Call: ; All Call: ).After encoding, the LED glows

orange.

Decoding:

For decoding, the radio provides the following indications:

 PTT ID: After decoding, the LCD displays the icon and ID or alias of the transmitting party.

 Selective Call: After decoding, the radio provides the following indications:

Alert: The radio will sound default alert.

LED: The LED glows green.

LCD: If your dealer enables the feature “Display Decode ID”, the radio will display the

appropriate call icon (Private Call: ; Group Call: ; All Call: ) and

alias of the transmitting party (ID of the transmitting party will be displayed if it is not in

the contact list). If your dealer does not enable the feature “Display Decode ID”, the

radio will display the appropriate call icon only.

Troubleshooting

Phenomena Analysis Solution

The radio can not be

powered on.

The power cord may be

unconnected. Connect the power cord correctly.

The volume may be set to a low

level.

Increase the volume by rotating the

Volume Control knob clockwise.

The antenna may get loose or

may be improperly installed.

Power off the radio, re-install the

antenna and power on the radio again.

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 our 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.

You can not

communicate with

other members in

Analog mode. You may be too far away from the

group members.

Move towards other members. And

make sure that you are within the

communication range.

You can not

communicate with

other members in

Digital mode

although there is

receiving indication.

Your ID may be inconsistent with

that of other members.

Consequently, the digital carrier

can be received but can not be

demodulated.

Set your ID to the same as that of other

members.

You may be interrupted by radios

using the same frequency. Adjust the squelch level.

Irrelevant

communications or

noises are heard on

the analog channel.

The radio may be set with no

signaling.

Set your radio with signaling to avoid

interference at the same frequency, and

make sure that all members share the

same signaling.

You may be too far away from

other members.

Move towards other members, and then

try again.

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 try

again.

The noise is too loud.

You may suffer from external

disturbance (such as

electromagnetic interference).

Stay away from equipment that may

cause interference.

You can not use the

keys.

The keypad may fail to function

temporarily. Restart the radio.

There is no display. The LCD may fail to function Restart the radio.

temporarily.

The GPS antenna is improperly

connected. Connect the GPS antenna correctly.

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

 Keep the product at a place with good ventilation and heat dissipation to facilitate normal work.

 Do not place irrelevant articles on top of the product to ensure optimal heat dissipation.

 Do not place the product in corrosive agents, solutions or water.

Product Cleaning

 Clean up the dust and fine particles on the product parts with a clean and dry lint-free cloth or a

brush regularly.

 Use a non-woven fabric with neutral cleanser to clean the keys, control knobs, LCD and jacks after

long-time use. Do not use chemical preparations such as stain removers, alcohol, sprays or oil

preparations. Make sure the product is completely dry before use.

Caution: Power off the product before cleaning.

Optional Accessories

The following items are the main optional accessories for the product, and please consult your local

dealer for more information.

External Speaker

SM09D1

Desktop Microphone

SM10A1

320W External Power Supply

PS22002

Programming Cable (USB Port)

PC37

Data Cable

PC40

Keypad Microphone

SM19A1

Antenna

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.

Appendix

Input Method

You can enter aliases, numbers or messages using the microphone with a keypad. The radio supports

the following input methods: Chinese Pinyin (simplified), English and Number.

 Chinese Pinyin (Simplified)

Operation:

1. Press to switch to Chinese Pinyin mode;

2. Enter the pinyin through alphanumeric keys; then a list of possible combinations and corresponding

characters will appear;

3. Use the Up/Down key to choose the right pinyin;

4. Press the OK key to highlight the characters, and choose the right character using the Up/Down

key;

5. Press the OK key to enter the selected character.

You can repeat the above steps to continue.

 English

Operation:

1. Press to switch to uppercase English or lowercase English mode;

2. Enter the English letters through alphanumeric keys;

3. Use the Up/Down key to choose the right letter;

4. Press the OK key to enter the selected letter.

You can repeat the above steps to continue.

 Number

Operation:

1. Press to switch to Number mode;

2. Enter the numbers through alphanumeric keys to .

 Special Character

To enter common punctuations and special characters, press .

To input a space, press .

Note: You can use the Up/Down key to move the cursor leftward/rightward in the entered text.

Hytera Communications MD78XU2 Digital Portable Radio User Manual

Hytera Communications Corporation Ltd. Digital Portable Radio

User Manual

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