Kenwood TH-78A Step Size Selection, Using the Tuning Control, Changes in the Displayed Frequency

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Using the Tuning Control

The tuning control selects frequencies in up or down sequentially.

Rotate the tuning control clockwise or counterclockwise to select the desired operating frequency.

4 Step Size Selection

The transceiver must be in the VFO mode to select frequency steps.

To select the desired tuning or scan step size use the following procedure:

1Press the F key for longer than one second then press the 3 key. The current frequency step size will be displayed.

2Rotate the Tuning control until the desired tuning step size appears in the display. The frequency step is indicated in the chart below.

3 Press the any key except POWER, LAMP and MONI key.

The displayed step size is set, and the normal frequency display returns.

Changes in the Displayed Frequency

As you change from one step size to another, the displayed frequency also changes, as illustrated in the accompanying charts.

For example, assume you are presently displaying 439.920 MHz at a 20kHz step size. If you were to change the step size to 12.5kHz, the display would read 439.925 MHz.

From step size 5, 10, 15, or 20

To step size 12.5 or 25

 

 

 

Frequencies

Display as

 

 

 

0 , 5 , 1 0 , 1 5

0

 

 

 

2 0 , 2 5 , 3 0 , 3 5

2 5

 

 

 

4 0 , 4 5 , 5 0 , 5 5

5 0

60,

65,

70,

75, 80,

85,

90,

95

7 5

14

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Contents TH-78A Contents Dual Tone Squelch System Dtss Before Operation AccessoriesControls Overview Key Page Page Receiver Operation Tuning Control and Volume ControlGetting Started Separate tuning control function Separate volume control functionReturning to the original mode Direct Keyboard Frequency Entry Selecting a Frequency12.5 62.5 37.5 87.5 Step Size Selection Using the Tuning ControlChanges in the Displayed Frequency Programmable VFO Tuning Limits Basic Receiving Functions VFO tuning range 144.000 145.000 146.000 147.000Transmitter Operation Changing Transmitter Output PowerTo transmit, follow these steps Output Powerwatts Time-Out-TimerTX. Stop Function Microprocessor Memory Backup Using the MemoryInitializing The Memory Memory ChannelEntering Memory Data Memory ContentsEntering Normal Simplex/Repeater Channels Clearing a Memory ChannelEntering The Call Channel Frequency Entering Split Channel FrequenciesRecalling Memory Channels Using the numeric keypadMemory Shift Message Display Cancel Function SettingMemory Channel Character Display Character registrationScanning Scan operation cancelHold/Resume Programming Hold/Resume SelectionScanning Memory Channels Scan OptionsProgrammable Band Scan Band scanInitiating Programmable Band Scan Confirming Scan LimitMHz Scan VFO/Memory ScanCall / Memory Scan CALL/VFO Scan11 V/M/CVFO/Memory/CALL Scan Alert FunctionTransmitter Offsets Repeater OperationAutomatic Offset Selection Selecting the Offset DirectionReverse Function Manual Offset SelectionSelecting Tone Frequencies Tone OperationTone Function Operating Autopatch Operations Selecting Delay TimeTo activate the keypad Dtmf Memory Recalling Stored Dtmf Codes in Receive ModeStoring Dtmf Codes Making a Dtmf Call Operation AS a RepeaterOperating the Ctcss Function Ctcss OperationDual Tone Squelch System Dtss Using the Dtss FunctionDtss Code Selecting Dtss CodesPaging Operation Overview Paging Code Memory Setting Paging CodesGroup Communication Network Example Sending Pages CallingCalling All Group Members Calling a Specific Group Member Code setting mode Paging modeReceiving a Page with an Individual Code Receiving Pages WaitReceiving a Page with a Group code Canceling signal type squelch Canceling Signal SquelchLocking Out Codes Answer-BackMemory write procedure Using the Message MemoryMessage Transmission and Reception Message Transmission ModesLnpu t Key Message Memory Check Dtss modeMessage Memory Transmission Message ReceptionReceive Message Memory Paging modeReceive message memory clear Tone Alert System Enhanced Receiver FunctionsSelecting a Beep Sound BeepOff MonitorLamp Key LockCAUT/ON Volume adjustment when you use an earphoneTo simultaneously receive two UHF band signals To simultaneously receive two VHF band signalsAutomatic Band Change Function Single Band Operation MHz ModeChannelized Frequency Display Battery Saver Mode Power Saver FeaturesAutomatic Power Off APO Battery Save Time SelectionTimer Function Time SettingTime Alarm Setting Switch-on Timer SettingTimer Start/Stop Switch-off Timer SettingAlarm Function Duplex Operation Power On Message Power on Message and Function MessageChanging Power-on Message Function Message450MS 250MSService MaintenanceGeneral Information Record KeepingTroubleshooting 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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