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Instruction Manual Kenwood - TH78E, TH-78A

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144/430 MHz FM Dual Bander
144/440 MHz FM Dual Bander


144/430MHz FM Dual Bander




@PRINTED IN JAPAN B62-0248-30(W)(MC)
9 4 / 6 5 4 3 2 1 9 3 / 1 2 1 1 1 0 9 8 7 6 5 4 3 2

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Summary of Contents

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    144/430 MHz FM Dual Bander144/440 MHz FM Dual Bander TH-78A 144/430MHz FM Dual Bander TH-78E INSTRUCTION MANUAL KENWOOD CORPORATION @PRINTED IN JAPAN B62-0248-30(W)(MC)9 4 / 6 5 4 3 2 1 9 3 / 1 2 1 1 1 0 9 8 7 6 5 4 3 2
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    ACCESSORIES . . . . . . . . . . . . . . . . . . . . BEFORE OPERATION . . . . . . . . . . . . . . Controls Overview . . . . . . . . . . . . . . THE BATTERY PACK 1 NiCd Battery Pack (PB-13). . . . . . . . . . . .. . . . 2 Recharging. . . . . . . . . . . .
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    THE DUAL TONE SQUELCH SYSTEM (DTSS) 1 DTSS Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 2 Using the DTSS Function . . . . . . . . . . . . . . . . 363 Using DTSS with a Repeater. . . . . . . . . . . . . . 37 PAGING 1 Paging Operation Overview
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    ACCESSORIES Antenna . . . . . . . . . . . . . . . . . . . . . . . T90-0444-X X Belt Hook . . . . . . . . . . . . . . . . . . . . . . J29-0465-X X Hand Strap . . . . . . . . . . . . . , . . . . . . J69-0312- X X Rubber Cap . . . . . . . . . . . . . . . .
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    Controls Overview This transceiver has different key layouts for eachdestination. Check the version of your transceiverfirst by looking at the following illustration. All types except U.K and European version U.K and Europe version only 6
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    This diagram will help you locate the keys, switches, DC IN TERMINAL and knobs you’ll need to perform necessaryoperations. Please study these controls carefully. By ANTTENA SPEAKER/HEADPHONE JACK the time you reach the end of this manual, you will CONNECT
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    RECEIVER OPERATION 1 Getting Started Connect the battery pack and the supplied antenna. Press the POWER switch to turn the transceiver on. One of the default frequencies should appear on the display. 2 Tuning Control and Volume Control This transceiver assigns
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    When you press the BAND key, control of eachfunction is transferred to the VHF band. When you press and hold the E.CHG key (or withintwo seconds of pressing the E.CHG key), eachcontrol temporary control of the volume or tuningcontrol passes to the VHF band.
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    Whenever you are selecting frequencies, your firststep should be to set the squelch control. Thesquelch helps eliminate “white noise” or static untilyou receive active communications on a frequency. There are two squelch controls, one for the UHFband and
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    For the European version and some other markets, Next press numeric keys 0 and 5. 5 The transceiver actually changes frequency only after the 1 kHz digit is entered. The 1 kHz digit isnot displayed if it is a zero. If you do not enter the 1 kHz digit, the
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    Using the Tuning Control The tuning control selects frequencies in up or downsequentially. Rotate the tuning control clockwise orcounterclockwise to select the desired operating frequency. 4 Step Size Selection 1 2 14 The transceiver must be in the VFO mode
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    From step size 12.5 or 25 To step size 5,10, 15, or 20 Frequencies Display as 0 0 12.5 10 25 20 37.5 30 50 50 62.5 60 75 70 87.5 80 5 Programmable VFO Tuning Limits This radio provides the capability of programming theVFO tuning range, in 1 MHz band segments,
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    5 To confirm that the programming was properly performed rotate the Tuning control. The transceiver should not go above or below the programmed band limits. 6 Basic Receiving Functions When receiving a signal, the Main/Sub S-meterdeflects and the Main/Sub
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    TRANSMITTER WARNING: Before you attempt to transmit, attach an antenna with a low standing wave ratio to the antennaconnector. Failure to provide a proper load maycause damage to the final amplifier section. Alwayscheck that the frequency is clear before
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    3 TX. Stop Function The TX Stop function allows you to temporallydisable the transceiver transmit, preventingaccidental or unauthorized transmission. Press the F key, then press the f 2 /TX.S key to turn the TX. Stop function on or off. No indicator means
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    USING THE MEMORY 1 Microprocessor Memory Backup All memory channel data is backed up in EEPROM. It is not lost unless you reset the memory. All other data that you set is retained by a secondary lithium battery that will provide memory backup forabout 20
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    4 Memory Contents Each memory channel can store information asshown in the chart below. X =Can be stored in memory Normal Split Channel Channel RX frequency TX frequency Tone(CTCSS) frequency,Tone (CTCSS) status Frequency stepShift status, REV on/off X N
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    6 Entering Split Channel Frequencies Use the numeric keypad to select the desiredreceiver frequency, tone and other information. If thedesired frequency is already on the display, continueto step 2. Press the M key. The memory indicator will flash. Use the
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    3 Select the desired call channel transmit frequency. 4 Press the M key. 5 Press and hold the PTT switch and press the CALL key. 6 Release the PTT switch. 8 Recalling Memory Channels Press the MR key. You can change the memory channel by the following two
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    10 Memory Channel Character Display You can display the memory channel frequency withyour own spelling. It may be up to six characterslong. You can use numerics 0 to 9 and the letters A 4 Enter your message with the keypad. See the list on page 45 for the
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    SCANNING You must adjust the squelch to the threshold pointfor proper scan operation. You cannot use scan inconjunction with the tone alert function and paging.Scanning occurs separately in the VHF and UHFbands. You can reverse the direction by turning the
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    3 Scan Options The following scan options are available: * Memory Scan Scans through those memory channels that havedata stored and that have not been locked out. Thisfunction operates only in the memory mode. * Band Scan Scan proceeds over the entire band.
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    2 Press the F key, then the 0/L.OUT key. A * indicator appears below the memory channelnumber on the display, indicating that channel will beskipped in the memory channel scan mode. 3 Repeat steps 1 and 2 to lockout any other channels you may want to skip.
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    5 Press and hold the M key for longer than one second, then press the 4 key. Notes1 Initialize the VFO memory (VFO RESET) to clear both programmed limits simultaneously. Pressand hold the F key and turn on the power. Youcan reprogram either limit independently.
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    2 Press the F key, then press the MR key. 3 The VFO frequency and the last used memory channel are scanned alternately. 9 CALL/VFO Scan 1 Press and hold the CALL key for longer than one second in VFO mode. 2 The frequency and CALL frequency are scanned alternately.
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    REPEATER OPERATION 1 Transmitter Offsets All amateur radio repeaters use a separate receiveand transmit frequency. The receive frequency maybe above or below the transmit frequency. Mostrepeater configurations fall into one of the followingcategories. OffsetDirection
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    4 Manual Offset Selection 5 The Reverse Function The factory default sets the automatic offsetfrequency. You can select any offset frequency inthe range 0 to 99.9 MHz in 100 kHz steps. Some repeaters use a ’ reverse pair’, that is, thetransmit/receive frequencies
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    6 Tone Operation Some repeaters require a control signal to activatethem. Several different methods are currently inuse. In the United States, sub-audible tones are sometimes used. This transceiver will generate sub-audible frequencies. In Europe and the
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    7 Autopatch Operations (U.S.A. versions only)Some repeaters offer a service called autopatch.This feature allows you to dial a telephone numberfrom your transceiver and carry on a telephoneconversation. This function requires the use of a DTMF (Dual Tone
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    8 DTMF Memory You can store 10 DTMF telephone numbers up to a maximum of 15 digits long in memory. Storing DTMF Codes 1 Press the M key, then press the MHz key to select the DTMF code entry mode. 2 Enter the DTMF code on the keypad 3 Press the MR key after
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    Making a DTMF Call 1 Hold the PTT switch down and press the MHz key. 2 Press the numeric key (O-9) for the channel where the DTMF code is stored. 3 The DTMF code appears on the display. Note Transmission continues until the whole code string is recalled,
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    CTCSS OPERATION The CTCSS unit (TSU-7) is included only withmodels delivered to the United States and Canada.The CTCSS unit (TSU-7) installation instruction areshown on page 63. If the Continuous Tone Code Squelch System(CTCSS) function is activated, the
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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 fromthen on. If no signal is
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    Paging uses a DTMF (Dual Tone Multi Frequency)signal and is useful in calling members of a group, aspecific station, or for waiting for a call from anotherstation. F: 145.020MHz Individual Code: 111 F: 145.020MHz F: 145.020MHz F: 145.020MHz lndividual Code
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    2 Paging Code Memory There are 8 paging code memories. M e m o r y C o d e 1 ~ 6 Use Stores your station ID code in memory. Automatically stores the calling station’s code during reception. Can temporarily set the code for the station to be called. Stores
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    The chart shows how members of a group mightcommunicate with each other. You may wish to refer back to this chart as you read the examples on the following gages. Your station ID code is preset in memory A. You Group Communication Network Example Predetermined
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    Press the PTT switch. Communication is possible inboth the Paging and code setting mode. In the code setting mode In the Paging mode 145.02 MHz The group code 789 and your station ID code 111are transmitted. Calling a Specific Group Member Use the following
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    5 Receiving Pages (Wait) 1 Tune to the predetermined frequency. 2 Press the F key then press the 1 key to enter the Paging mode. Receiving a Page with an Individual Code 1 When the proper code is received, your squelch willopen and you will hear an alert
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    6 Canceling Signal Squelch Squelch will not open when operating in the pagingmode when the paging codes do not match. It ispossible to reprogram the transceiver so that squelchwill open regardless of the incoming page code. Even when signal squelch is canceled,
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    MESSAGE TRANSMISSION AND RECEPTION This function lets you transmit your message to theother party or display a message from the other partyon your transceiver using the DTMF (Dual Tone Multi Frequency) signal and alphanumeric display. You can use the numerics
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    Relationship between input characters and keys (Note: “ + ” means press two keys in sequence (with in 2 seconds)) lnpu t characters Key operation 0 0 1 1 2 2 3 3 lnput characters Key operation Z 1+B (M) B 2 + B ( M ) E 3+B (M) H 4 + B ( M ) K 5+B (M) N 6+B
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    5 Press a key (0 to 9) corresponding to the numeric you want to enter to memory. 6 To cancel message input mode, press the PTT switch. 3 Message Memory Check 1 Press and hold the F key for longer than onesecond, then press the MESSAGE key. 2 Press a desired
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    H Paging mode Press any key 6 Receive Message Memory This transceiver has 10 incoming message memorychannels, in which received messages are stored. If you press the MESSAGE key in the messagemode, the last stored message is displayed. You can store your
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    ENHANCED RECEIVER FUNCTIONS 1 The Tone Alert System The Tone Alert function provides an audible alarm to indicate when someone is transmitting on the frequency you are monitoring. If you use the tone alert function with the CTCSS,paging, or DTSS function,
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    2 Monitor Even if the squelch or CTCSS, DTSS, or PAGING is ON, you can monitor the channel by pressing theMONI key. 3 BeepOff The transceiver produces beeps when you push thefront panel keys. If you want to disable thisfunction, press and hold the 6 key
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    6 Volume adjustment when you use an earphone r CAUT/ON If you use an earphone, you may feel that thevolume is too high even if the volume level is set tominimum. We recommend that before connectingthe earphone, you set the volume level to theminimum and
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    8 Automatic Band Change Function The Automatic Band Change function automaticallyswitches transmit control from the RX/TX band to theRX only band whenever a signal is received thatopens squelch on the RX only band. 1 Press the F key, then press the BAND/A.B.C.
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    Notes on simultaneous in Band reception 1 When two signals on the same band are received simultaneously, the receiveperformance, such as image interferenceand sensitivity, may be reduced. 2 If the two frequencies are the same, the volume may decrease at
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    POWER SAVER FEATURES 1 The Battery Saver Mode This transceiver provides a battery saver mode toconserve on battery power. The battery saver circuitactivates 10 seconds after the last key is pressed.The squelch must be closed. This functiondeactivates whenever
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    CLOCK FUNCTION If you press the F key, then the 7 key in receivemode, the clock is displayed on the Sub banddisplay. The time is displayed on a 24-hour basis. If you press the F key, then the 7 key again, the clock is canceled, and the normal frequency displayreturns.
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    Switch-off Timer Setting Timer Start/Stop 1 If you press and hold the F key for longer than onesecond, then the 9 key, you enter the switch-off timer setting mode, and the TIMER.OFF indicator and the “Hour” display will flash. If you press the F key, then
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    56 DUPLEX OPERATION Normally this transceiver operats in a simplex mode,i.e. No receive audio from the sub-band is fed to thespeaker during transmit on the main or active band. If you prefer duplex operation, i.e. Receive audio from sub-band is fed to the
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    POWER ON MESSAGE AND FUNCTION MESSAGE 1 Power On Message When you first switch the POWER on, “TH78A” or “TH78E” appears on the display for two seconds. You can change this factory-set message to yourown message as follows: Changing Power-on Message 2 Function
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    EAR Earphone mode MSG M1 MSG MX MSGCLR OPG OFF OPG ON PROGSCN PROGVFO SHIFT SP SPLIT Store receive messages in up to 10 memory channels If more than 10 messages are received, the oldest message are replaced with the new ones Message transmission memory clear
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    MAINTENANCE 1 General Information Your transceiver has been factory aligned and testedto specification before shipment. Under normalcircumstances the transceiver will operate inaccordance with these instruction manuals. All adjustable trimmers and coils
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    TROUBLESHOOTING The following problems are generally caused by improper transceiver operation or connection, not by defective components. If you experience any of these problem causes and corrective actions before requesting service. Symptom Probable Cause
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    ACCESSORIES Note: Some optional accessories may not be available in your area. SPEAKER MICROPHONE SMC-31 SMC-32 SMC-33 SMC-34 HEADSET withVOX/PTT HMC-2 CLIP MICROPHONE withEAR PHONE EMC-l Optional unit Battery charger TSU-7 (CTCSS unit) ME-1 (Memory expansion
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    1 Installing the CTCSS Unit (TSU-7) 1 Slide the release button to unlock, then pull outthe battery case. 2 Unscrew the four screws on the rear (Fig. 1). The screw near the antenna connector is a short one. 3 Put your finger into the battery holder, and release
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    2 Memory Expansion Unit (ME-l) 1 Slide the release button to unlock, then pull outthe battery case. 2 Unscrew the four screws on the rear (Fig. 1). The screw near the antenna connector is a short one. 3 Put your finger into the battery holder, and release
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    3 Programming the SMC-33 Remote Control Speaker Microphone CALL switch Earphone jack LOCK switch These keys function just like the VFO, MR, andCALL keys on the front panel of the transceiver. To reset the function of the transceiver keys. 1 Connect the SMC-33
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    Memory Control Functions Press the key below. Press the F key, then the key below. Tuning control (II) Encoder/Volume selecting mode LAMP LAMP (Turns off 5 seconds after the (Does not turn off automatically) last key operation) MONI TONE TX output power
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    4 Using Other Microphone If not using the SMC-33, we recommend using anelectret type microphone. The input impedance is2k ohms and the DC voltage on the microphoneterminal is approximately 4 volts (Max. 3.5 mA).Do not use a dynamic microphone. Speaker 67
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    SPECIFICATIONS GENERAL U.S.A. Version FREQUENCY RANGE (MHz) U.K.and Europe 144 to 146 Other market 144 to 148 ANTENNA IMPEDANCE OPERATING TEMPERATURE POWERREQUIREMENTS BATTERY PACK CURRENT DRAINTransmit mode(13.8VDC) H Transmit mode(13.8VDC) L Transmit mode(13.8VDC)
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    QUICK REFERENCE Note : The plus symbol (+) means press two keys simultaneously. “then” means press two keys in sequence. “(1 second)” means press the key for longer than one (1) second. TO DO THIS PRESS Temporarily change the volume or frequency of the band
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    Switching speaker output when a external Turn CLOCK function on or off F then 7 Turn switch on timerfunction on or off F then 8 Turn switch off timerfunction on or off F then 9 Activate memory channel lock out function F then 0 Turn KEY LOCK function on
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    TO DO THIS Enter a data into the call channel Message memory buffer clear Enter displayed data in lower limit frequencyof programmable VFO tuning limit Enter displayed data in upper limit frequencyof programmable VFO tuning limit - - Enter displayed frequency