Kenwood TH-78A User Manual

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144/430 MHz FM Dual Bander
144/440 MHz FM Dual Bander
TH-78A
144/430MHz FM Dual Bander
TH-78E
INSTRUCTION MANUAL
KENWOOD CORPORATION
©PRINTED
IN
JAPAN
Eee
0248-60(W)(MC)
94/654321
93/121

Kenwood TH-78A Specifications

General

Frequency Range	144-148 MHz / 430-450 MHz
Modulation	FM
Channels	200
Supply	7.2 VDC
Antenna Connector	BNC
Receiver Sensitivity	0.16 μV (12 dB SINAD)
Channel Steps	5, 10, 12.5, 15, 20, 25 kHz

Summary

Models Covered

TH-78A (U.S.A./Canada)

Covers TH-78A models for U.S.A. and Canada with CTCSS unit.

TH-78A (Other Markets)

Covers TH-78A models for other markets.

TH-78E (U.K./Europe)

Covers TH-78E models for U.K. and European markets.

Attention (U.S.A. only)

User Notices

FCC Warning

Warns about potential radio frequency interference from equipment modifications.

FCC Digital Device Information

Details compliance with FCC rules for Class B digital devices and interference mitigation.

The Battery Pack

Receiver Operation

Getting Started

Instructions for initial setup, connecting battery and antenna, and powering on.

Tuning Control and Volume Control

Explains the dual function of tuning and volume controls for VHF/UHF bands.

Selecting a Frequency

Describes methods for selecting frequencies, including keyboard entry.

Programmable VFO Tuning Limits

Explains how to set custom tuning ranges for the VFO.

Transmitter Operation

To Transmit

Changing Transmitter Output Power

Using the Memory

Entering Memory Data

Entering Split Channel Frequencies

Recalling Memory Channels

Scanning

Hold/Resume Programming

Scan Options

Details available scan types like Memory Scan, Band Scan, MHz Scan, etc.

Scanning Memory Channels

Programmable Band Scan

Repeater Operation

Transmitter Offsets

Explains standard offset frequencies for repeater communication.

Selecting the Offset Direction

Automatic Offset Selection

Manual Offset Selection

The Reverse Function

Tone Operation

The Dual Tone Squelch System (DTSS)

DTSS Code

How to select and store DTSS codes (000-999).

Using the DTSS Function

Steps to activate and use the DTSS squelch system.

Using DTSS with a Repeater

Paging

Paging Operation Overview

Paging Code Memory

Setting Paging Codes

Procedure to program individual and group paging codes.

Sending Pages (Calling)

Instructions for initiating a page to individual or group members.

Receiving Pages (Wait)

How to receive and respond to pages, including individual and group calls.

Message Transmission and Reception

Message Transmission Modes

Using the Message Memory

Message Reception

Enhanced Receiver Functions

The Tone Alert System

Provides an audible alarm for transmitting on monitored frequencies.

Automatic Band Change Function

Simultaneous Receive Function

Power Saver Features

The Battery Saver Mode

Activates a battery saver circuit after a period of inactivity.

Automatic Power Off (APO)

Automatically powers off the transceiver after a set period of inactivity.

Duplex Operation

Enabling Duplex Operation

Instructions to activate duplex mode for simultaneous receive/transmit.

Preventing Howling

Maintenance

Service

Troubleshooting

Indicators Not Lighting/No Receiver Noise

Addresses issues with power indicators and receiver noise.

No Sound/No Signal Received

Troubleshooting steps for lack of audio or signal reception.

No Control Works

Solutions for when transceiver controls are unresponsive.

Memory Channel Recall Issues

Steps to resolve problems with recalling memory channels.

Memory Backup Failure

Addresses issues with backing up memory data.

Specifications

Transmitter Specifications

Receiver Specifications