Kenwood TH-78A, TH78E Dual Tone Squelch System Dtss, Dtss Code, Using the Dtss Function

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THE DUAL TONE SQUELCH SYSTEM (DTSS)

DTSS allows squelch activation in the receive mode when the transceiver receives a three-digit code matching the DTSS code you have selected.

Once squelch is activated, it operates normally from then on. If no signal is received for more than two seconds, squelch turns off until the transceiver receives a matching code.

Note

This function is not available in some market areas.

1 DTSS Code

You can select DTSS codes from 000 to 999 in the VFO mode. Store them either in memory channel or in the call channel.

Selecting DTSS Codes

1Press the BAND key to select the desired band.

2Press and hold the F key for longer than one second, then press the 2/DTSS key.

3 Enter a three-digit number on the keypad.

Note

Pressing a non-numeric key cancels code selection mode. Code selection cancels automatically if you make no entries within 10 seconds.

2 Using the DTSS Function

1Adjust the squelch to the threshold point.

2Press the BAND key to select the desired band.

3Press the F key, then press the 2/DTSS key. The DT indicator will appear on the display.

4 Squelch opens when you receive the proper code.

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Contents TH-78A Contents Dual Tone Squelch System Dtss Before Operation AccessoriesControls Overview Key Page Page Getting Started Tuning Control and Volume ControlReceiver Operation Returning to the original mode Separate volume control functionSeparate tuning control function Direct Keyboard Frequency Entry Selecting a Frequency12.5 62.5 37.5 87.5 Changes in the Displayed Frequency Using the Tuning ControlStep Size Selection Programmable VFO Tuning Limits Basic Receiving Functions VFO tuning range 144.000 145.000 146.000 147.000To transmit, follow these steps Changing Transmitter Output PowerTransmitter Operation TX. Stop Function Time-Out-TimerOutput Powerwatts 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 FrequenciesMemory Shift Using the numeric keypadRecalling Memory Channels 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 Function Operating Tone OperationSelecting Tone Frequencies To activate the keypad Selecting Delay TimeAutopatch Operations Storing Dtmf Codes Recalling Stored Dtmf Codes in Receive ModeDtmf Memory 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 CodesCalling All Group Members Sending Pages CallingGroup Communication Network Example Calling a Specific Group Member Code setting mode Paging modeReceiving a Page with a Group code Receiving Pages WaitReceiving a Page with an Individual 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 TransmissionReceive message memory clear Paging modeReceive Message Memory Selecting a Beep Sound Enhanced Receiver FunctionsTone Alert System Key Lock MonitorBeepOff LampCAUT/ON Volume adjustment when you use an earphoneAutomatic Band Change Function To simultaneously receive two VHF band signalsTo simultaneously receive two UHF band signals Channelized Frequency Display MHz ModeSingle Band Operation Battery Save Time Selection Power Saver FeaturesBattery Saver Mode Automatic Power Off APOSwitch-on Timer Setting Time SettingTimer Function Time Alarm SettingAlarm Function Switch-off Timer SettingTimer Start/Stop 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.
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