Kenwood TH-78A, TH78E instruction manual Dual Tone Squelch System Dtss

Page 3

THE DUAL TONE SQUELCH SYSTEM (DTSS)

1

DTSS Code

36

2

Using the DTSS Function

36

3

Using DTSS with a Repeater

37

PAGING

1 Paging Operation Overview . . . . . . . . . . . . . . 38 2 Paging Code Memory . . . . . . . . . . . . . . . . . . . 39 3 Setting Paging Codes . . . . . . . . . . . . . . . . . . .39 4 Sending Pages (Calling). . . . . . . . . . . . . . . . . .40 5 Receiving Pages Wait) . . . . . . . . . . . . . . . . . .42 6 Canceling Signal Squelch. . . . . . . . . . . . . . . . .43 7 Locking Out Codes . . . . . . . . . . . . . . . . . . . . . 43 8 Answer-Back . . . . . . . . . . . . . . . . . . . . . . . . . .43

MESSAGE TRANSMISSION AND RECEPTION

1

Message Transmission modes

. 44

2 Using the Message Memory

. 44

3 Message Memory Check

. 46

4

Message Memory Transmission

. 46

5 Message Reception

. 46

6 Receive Message Memory

. 47

ENHANCED RECEIVER FUNCTIONS

 

1 The Tone Alert System

.48

2

Monitor

.49

3 BeepOff

. 49

4

Lamp

. . 4 9

5

Key Lock

. . 4 9

6 Volume adjustment when you use

 

 

anearphone

50

7

Switching speaker output when a speaker-

 

 

microphone is connected

. 50

8

Automatic Band Change Function

. 51

9 Simultaneous Receive Function of Two

Signal in the Same Band . . . . . . . . . . . . . .51

10 Single Band Operation. . . . . . . . . . . . . . . . . . .52

11 MHz Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

12 Channelized Frequency Display. . . . . . . . .52

POWER SAVER FEATURES

1 The Battery Saver Mode , . . . . . . . . . . . . . . . .53 2 Automatic Power Off (APO). . . . . . . . . . . . . . 53

CLOCK FUNCTION

1 Time Setting . . . . . . . . . . . . . . . . . . . . . . . . .54 2 Timer Function . . . . . . . . . . . . . . . . . . . . . . . .54

DUPLEX OPERATION . . . . . . . . . . . . . . . . . . . . . .56

POWER ON MESSAGE AND FUNCTION MESSAGE

1 Power On Message . . . . . . . . . . . . . . . . . . . . .57 2 Function Message . . . . . . . . . . . . . . . . . . . . . .57

MAINTENANCE

 

1 General Information

.59

2 Service . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . .59

3 Record Keeping

.59

TROUBLESHOOTING

. 60

ACCESSORIES

61

1 Installing the CTCSS Unit (TSU-7)

63

2 Memory Expansion Unit (ME-l)

64

3 Programming the SMC-33 Remote Control

 

SpeakerMicrophone

65

4 Using other microphone

67

SPEClFlCATlONS

6 8

QUICK REFERENCE

69

4

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Contents TH-78A Contents Dual Tone Squelch System Dtss Before Operation AccessoriesControls Overview Key Page Page Tuning Control and Volume Control Receiver OperationGetting Started Separate volume control function Separate tuning control functionReturning to the original mode Direct Keyboard Frequency Entry Selecting a Frequency12.5 62.5 37.5 87.5 Using the Tuning Control Step Size SelectionChanges in the Displayed Frequency Programmable VFO Tuning Limits Basic Receiving Functions VFO tuning range 144.000 145.000 146.000 147.000Changing Transmitter Output Power Transmitter OperationTo transmit, follow these steps Time-Out-Timer Output PowerwattsTX. Stop Function Memory Channel Using the MemoryMicroprocessor Memory Backup Initializing The MemoryClearing a Memory Channel Memory ContentsEntering Memory Data Entering Normal Simplex/Repeater ChannelsEntering The Call Channel Frequency Entering Split Channel FrequenciesUsing the numeric keypad Recalling Memory ChannelsMemory Shift Character registration Function SettingMessage Display Cancel Memory Channel Character DisplayHold/Resume Selection Scan operation cancelScanning Hold/Resume ProgrammingScanning Memory Channels Scan OptionsProgrammable Band Scan Band scanVFO/Memory Scan Confirming Scan LimitInitiating Programmable Band Scan MHz ScanAlert Function CALL/VFO ScanCall / Memory Scan 11 V/M/CVFO/Memory/CALL ScanSelecting the Offset Direction Repeater OperationTransmitter Offsets Automatic Offset SelectionReverse Function Manual Offset SelectionTone Operation Selecting Tone FrequenciesTone Function Operating Selecting Delay Time Autopatch OperationsTo activate the keypad Recalling Stored Dtmf Codes in Receive Mode Dtmf MemoryStoring Dtmf Codes Making a Dtmf Call Operation AS a RepeaterOperating the Ctcss Function Ctcss OperationSelecting Dtss Codes Using the Dtss FunctionDual Tone Squelch System Dtss Dtss CodePaging Operation Overview Paging Code Memory Setting Paging CodesSending Pages Calling Group Communication Network ExampleCalling All Group Members Calling a Specific Group Member Code setting mode Paging modeReceiving Pages Wait Receiving a Page with an Individual CodeReceiving a Page with a Group code Answer-Back Canceling Signal SquelchCanceling signal type squelch Locking Out CodesMessage Transmission Modes Using the Message MemoryMemory write procedure Message Transmission and ReceptionLnpu t Key Message Reception Dtss modeMessage Memory Check Message Memory TransmissionPaging mode Receive Message MemoryReceive message memory clear Enhanced Receiver Functions Tone Alert SystemSelecting a Beep Sound Key Lock MonitorBeepOff LampCAUT/ON Volume adjustment when you use an earphoneTo simultaneously receive two VHF band signals To simultaneously receive two UHF band signalsAutomatic Band Change Function MHz Mode Single Band OperationChannelized Frequency Display Battery Save Time Selection Power Saver FeaturesBattery Saver Mode Automatic Power Off APOSwitch-on Timer Setting Time SettingTimer Function Time Alarm SettingSwitch-off Timer Setting Timer Start/StopAlarm Function Duplex Operation Function Message Power on Message and Function MessagePower On Message Changing Power-on Message450MS 250MSRecord Keeping MaintenanceService General InformationTroubleshooting ME-1 Optional unit Battery charger SMC-31 SMC-34 TSU-7DVB lNVlSIS3tl LNflOk-4 13AIMS Installing the Ctcss Unit TSU-7 Memory Expansion Unit ME-l Programming the SMC-33 Remote Control Speaker Microphone Press the key below Press the F key, then Key below Memory Control FunctionsUsing Other Microphone General SpecificationsTo do this Press Quick ReferenceThen f2 To do this

TH78E, TH-78A specifications

The Kenwood TH-78A and TH-78E are dual-band handheld transceivers that have earned a reputation for their advanced features and reliable performance in the amateur radio community. These transceivers are designed to operate on both the VHF and UHF bands, making them versatile tools for communication across different frequencies.

One of the standout features of the TH-78A and TH-78E is their dual receive capability, which allows operators to monitor two frequencies simultaneously. This is particularly useful for those who need to keep track of multiple communication channels, providing flexibility during operations. The transceivers also support a wide frequency range, ensuring compatibility with a diverse array of communication channels.

Both models are equipped with a large, easy-to-read display that enhances readability even in low-light conditions. The display provides essential information, such as frequency, channel, and battery status, ensuring operators can quickly access important data while on the move. An adjustable backlight further aids visibility in dark environments, making these radios a reliable choice for night operations.

The Kenwood TH-78A and TH-78E are known for their robust audio performance. They utilize advanced audio processing technology that enhances sound clarity, allowing for clear communication even in noisy environments. Additionally, the transceivers support a variety of digital modes, including CTCSS and DCS, which enable users to communicate securely by encoding their transmissions.

With a built-in 1000 memory channels, users can store and easily access their favorite frequencies. This extensive memory capability simplifies the task of switching between channels, making it easier for amateur radio enthusiasts to program and manage their communications. Furthermore, the radios feature programmable function keys that allow users to customize frequently used settings for quick access.

The TH-78A and TH-78E also come with a built-in GPS receiver, which is particularly beneficial for outdoor activities and emergency communications. The GPS functionality allows users to transmit their location coordinates, making it easier for others to locate them in case of emergencies.

In conclusion, the Kenwood TH-78A and TH-78E are powerful and versatile handheld transceivers that cater to amateur radio enthusiasts and professionals alike. Their dual-band operation, dual receive capabilities, comprehensive memory options, and advanced audio performance make these radios suitable for various communication needs. Whether for casual use or emergency situations, the TH-78 series remains a reliable choice for effective and efficient communication.