Kenwood Stereo System TH 78A User Manual

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 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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CONTENTS  
5
7 Entering The Call Channel Frequency. . . . . 21  
ACCESSORIES  
. . . . . . . . . . . . . . . . . . . . . .  
. . . .  
8 Recalling Memory Channels . . . . . . . . . . . . . 22  
9 Memory Shift . . . . . . . . . . . . . . . . . . . . . . . . . .22  
10 Memory Channel Character Display. . . . . . . . 23  
5
6
BEFORE OPERATION . . . . . . . . . . . . . .  
. . . . . .  
. . . . . .  
. . . . . . . . . . . . . .  
Controls Overview  
THE BATTERY PACK  
SCANNING  
1
NiCd Battery Pack (PB-13). . . . . . . .  
8
8
8
9
9
. . . . . .  
. . . . . . . . . . . . . . 24  
Hold/Resume Programming  
2
Recharging.  
. . .  
. . . . . . . . . . . . . . . . . . .  
2
3
4
5
6
7
8
9
. . . . . . . . . . . . . . . . . .24  
. . . . . . . . . . . . . . . . . . . . . . . . . .25  
Scan operation cancel.  
Scan Options  
3 Installing The Battery Pack. . . . . . .  
4 Battery Voltage Level . . . . . . . . . . .  
.
. .  
.
. . .  
. . .  
. .  
. . . . . . . . . . . . .25  
Scanning Memory Channels.  
. . . . . . . . .  
5 Battery Operating Time  
Scanning Band . . . . . . . . . . . . . . . . . . . . . .... 6  
. . . . . . . . . . . . . . .26  
RECEIVER OPERATION  
Programmable Band Scan.  
MHz Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7  
. . . . . . . . . . . . . . . . . . . . . 27  
1
Getting started.  
. . . . . . . . . . . . . . . .  
.
. .  
. . . 10  
. . . 10  
. .12  
. . .14  
. . 15  
. . .16  
2 Tuning Control and Volume Control  
3 Selecting Frequency . . . . . . . . . . . .  
4 Step Size Selection . . . . . . . . . . . . .  
5 Programmable VFO Tuning Limits .  
6 Basic Receiving Functions . . . . . . .  
VFO/Memory Scan  
. . . . . . . . . . . . . . . . . . . . . . . 28  
CALL/VFO Scan  
. .  
. .  
. .  
. . . . . . . . . . . . . . . . . . . .28  
10 CALL/Memory Scan  
. . . . . . . . 28  
. . . . . . . . . . . . . . . . . . . . . .28  
11  
V/M/C(VFO/Memory/CALL) Scan.  
The Alert Function  
13  
I
L
TRANSMITTER OPERATION  
REPEATER OPERATION  
1 To transmit  
. . . . . . . . . . . . . . . . . . . . . . . .  
. . .I7  
. . .17  
. . .18  
. . . . . . . . . . . . . . . . . . . . .29  
Transmitter Offsets  
1
2 Changing Transmitter Output Power ...  
3 TX. Stop Function . . . . . . . . . . . . . . . . . .  
4 Time Out Timer  
. . . . . . . . . . . .29  
2 Selecting the Offset Direction.  
. . . . . . . . . . . . . .29  
3 Automatic Offset Selection.  
. . . . . . . . . . . . . . . . . . . . . . .18  
. . . . . . . . . . . . . . . . .30  
. . . . . . . . . . . . . . . . . . .30  
4 Manual Offset Selection  
5 The Reverse Function  
USING THE MEMORY  
1
Microprocessor Memory Backup . . . . . .  
. . .19  
. . .19  
. . .19  
. . . . . . . . . . . . . . . . . . . . . . . .31  
6 Tone Operation.  
2 Initializing The Memory . . . . . . . . . . . . . .  
3 Memory Channel . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . .32  
7 Autopatch Operations  
. . . . . . . . . . . . . . . . . . . . . . . . .33  
8 DTMF Memory  
4 Memory Contents.  
. . . . . . . . . . . . . . . . . .  
. . .20  
. . . . . . . . . . . . . . .34  
OPERATION AS A REPEATER  
5 Entering Memory Data.  
6 Entering Split Channel Frequencies. . . .  
. . . . . . . . . . . . . . . . .20  
........................ .35  
CTCSS OPERATION  
. . 21  
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9
Simultaneous Receive Function of Two  
Signal in the Same Band . . . . . . . . . . . . . .51  
THE DUAL TONE SQUELCH SYSTEM (DTSS)  
1
DTSS Code.  
. . . . . . . . . . . . . . . . . . . . . . . . . . .  
36  
10 Single Band Operation. . . . . . . . . . . . . . . . . . .52  
2 Using the DTSS Function  
. . . . . . . . . . . . . . . . 36  
11  
MHz Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .52  
3 Using DTSS with a Repeater.  
. . . . . . . . . . . . .  
37  
12 Channelized Frequency Display. . . . . . . . .52  
PAGING  
POWER SAVER FEATURES  
1
Paging Operation Overview  
38  
39  
.39  
.40  
. . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . .  
1
The Battery Saver Mode , . . . . . . . . . . . . . . . .53  
2 Paging Code Memory  
3 Setting Paging Codes  
2 Automatic Power Off (APO). . . . . . . . . . . . . . 53  
CLOCK FUNCTION  
4 Sending Pages (Calling).  
5 Receiving Pages Wait)  
6 Canceling Signal Squelch.  
. . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . .  
1
Time Setting . . . . . . . . . . . . . . . . . . . . . . . . .54  
.42  
2 Timer Function . . . . . . . . . . . . . . . . . . . . . . . .54  
. . . . . . . . . . . . . . . .43  
DUPLEX OPERATION . . . . . . . . . . . . . . . . . . . . . .56  
7 Locking Out Codes  
.43  
.43  
. . . . . . . . . . . . . . . . . . . .  
8 Answer-Back  
. . . . . . . . . . . . . . . . . . . . . . . . .  
POWER ON MESSAGE AND FUNCTION  
MESSAGE  
MESSAGE TRANSMISSION AND RECEPTION  
1
Message Transmission modes.  
. . . . . . . . . . . 44  
1
Power On Message . . . . . . . . . . . . . . . . . . . . .57  
2 Using the Message Memory.  
3 Message Memory Check  
4 Message Memory Transmission.  
5 Message Reception  
. . . . . . . . . . . . . . . . . . . . 46  
6 Receive Message Memory.  
44  
46  
46  
. . . . . . . . . . . . .  
. . . . . . . . . . . . . . . .  
2 Function Message . . . . . . . . . . . . . . . . . . . . . .57  
MAINTENANCE  
. . . . . . . . . .  
1
General Information . . . . . . . . . . . . . . . . . . . . .59  
2 Service . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . .59  
3 Record Keeping . . . . . . . . . . . . . . . . . . . . . . . .59  
. . . . . . . . . . . . . . 47  
ENHANCED RECEIVER FUNCTIONS  
TROUBLESHOOTING  
ACCESSORIES  
. . . . . . . . . . . . . . . . . . . . .  
. 60  
1
The Tone Alert System  
. . . . . . . . . . . . . . . . .  
.48  
.49  
61  
. . . . . . . . . . . . . . . . . . . . . . . . . . .  
2 Monitor  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1
Installing the CTCSS Unit (TSU-7).  
. . . . . . . . 63  
3 BeepOff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49  
2 Memory Expansion Unit (ME-l).  
3 Programming the SMC-33 Remote Control  
. . . . . . . . . . 64  
4 Lamp  
5 Key Lock  
.. 49  
.. 49  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . . . . . . . . .  
6 Volume adjustment when you use  
anearphone  
7 Switching speaker output when a speaker-  
microphone is connected.  
. . . . . . . . . . . . . . .  
8 Automatic Band Change Function  
SpeakerMicrophone  
4 Using other microphone  
. . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . . . .  
65  
67  
. . . . . . . . . . . . . . . . . . . . . . . . . . .  
50  
SPEClFlCATlONS  
. . . . . . . . . . . . . . . . . . . . . . . . .  
6 8  
69  
50  
QUICK REFERENCE  
. . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . 51  
4
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ACCESSORIES  
BEFORE OPERATION  
Antenna . . . . . . . . . . . . . . . . . . . . . . .  
Belt Hook . . . . . . . . . . . . . . . . . . . . . .  
Hand Strap . . . . . . . . . . . . . , . . . . . .  
Rubber Cap . . . . . . . . . . . . . . . . . . . .  
AC plug (M type only) . . . . . . . . . . . . .  
Battery Case (TH-78Q type only) . . .  
T90-0444-X X  
J29-0465-X X  
J69-0312- X X  
B09-0330- X X  
E19-0254- X X  
A02-1658-X X  
Thank you for purchasing this KENWOOD  
transceiver. To get the most out of its many features,  
we suggest you read this instruction manual  
carefully, and keep it handy for further reference.  
To get ready to transmit and receive.  
NiCd Battery Pack(PB-13) . . . . . . . . . W09-0563-X X  
Battery Charger(BC-14)  
1
Check the accessories list to be sure everything you  
need has been included in the package.  
for U.S.A. and Canada (12OV)  
W09-0565- X X  
2 Charge the included  
battery pack, following the  
instructions completely before proceeding. (See page 8)  
W09-0569- X X  
When you have everything checked out and charged,  
you’re ready to get to the Receiver Operation section  
and get up and running with your new equipment.  
Other sections follow in a logical order to help you  
learn and use this transceiver to its full potential.  
. . . . . . . . . . . . . . . . . . . . . . .  
for Oceania (240V)  
W09-0568- X X  
W09-0567- X X  
for other market (120/240V)  
. . . . . . . . . . . . . . . . . . . . . . .  
Instruction Manual . . . . . . . . . . . . . . .  
W09-0566- X X  
B62-0248-X X  
CAUT/ON  
Warranty Card(U.S.A.,Canada,and Europe)  
The recommended transceiver duty cycle is 1  
minute of transmission and 3 minutes of reception.  
Longer transmissions or extended operation in the  
HI power mode may cause the back of the  
transceiver to get warm. Do not place the  
transceiver where the heat sink (rear panel) might  
come in contact with plastic or vinyl surfaces.  
Note  
Your transceiver comes with a portable dual-band  
flex antenna. For fixed transceiver locations, we  
recommend that you use a more permanent  
antenna installation to help eliminate interference  
and improve performance.  
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Controls Overview  
This transceiver has different key layouts for each  
destination. Check the version of your transceiver  
first by looking at the following illustration.  
U.K and Europe version only  
All types except U.K and European version  
6
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DC IN TERMINAL  
This diagram will help you locate the keys, switches,  
and knobs you’ll need to perform necessary  
SPEAKER/HEADPHONE JACK  
MICROPHONE JACK  
operations. Please study these controls carefully. By  
ANTTENA  
CONNECT  
the time you reach the end of this manual, you will  
have had to use each of them many times.  
BUSY (GREEN)/ON AIR (RED)  
INDICATOR FOR VHF BAND  
BUSY (GREEN)/ON AIR (RED)  
INDICATOR FOR UHF BAND  
TUNING CONTROL/VOLUME CONTROL  
SQUELCH CONTROL FOR UHF BAND  
FOR VHF BAND  
SQUELCH CONTROL  
FOR UHF BAND  
key  
-PTT  
key  
key  
key  
key  
DISPLAY PANEL  
MICROPHONE  
CONTROL PANEL  
U.K and Europe version only  
All types except U.K and European version  
7
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RECEIVER OPERATION  
2 Tuning Control and Volume Control  
1 Getting Started  
This transceiver assigns two volume and tuning  
control functions to the two controls.  
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.  
Before proceeding to the next step, master these  
functions. The default setting is as follows:  
Functions as the  
tuning control for  
the UHF band.  
Functions as the  
volume control for  
the UHF band.  
dissappear  
-after 2  
seconds  
If the display shows incomplete data, or you think the  
displayed frequency is wrong, reset the micro-  
processor Memory Initialization (see page 19)  
10  
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When you press the BAND key, control of each  
function is transferred to the VHF band.  
When you press and hold the E.CHG key (or within  
two seconds of pressing the E.CHG key), each  
control temporary control of the volume or tuning  
control passes to the VHF band.  
We recommend that you use this function in order to  
temporarily change the volume or frequency of the  
normally uncontrolled band.  
Separate tuning control function  
While operating the separate volume control mode,  
press the F key then the E.CHG key.  
Separate volume control function  
Functions as the  
tuning control for  
the UHF band.  
Functions as the  
tuning control for  
the VHF band.  
Press the F key then press the E.CHG key.  
Functions as the  
volume control for  
the UHF band.  
Functions as the  
volume control for  
the VHF band.  
\
\
Returning to the original mode.  
Press the F key for longer than one second then  
press the E.CHG key.  
11  
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Whenever you are selecting frequencies, your first  
step should be to set the squelch control. The  
squelch helps eliminate “white noise” or static until  
you receive active communications on a frequency.  
3 Selecting a Frequency  
You have several ways to select frequencies:  
*
By entering a specific frequency via the keyboard  
By using the tuning control  
n
n
n
There are two squelch controls, one for the UHF  
band and one for the VHF band. To set the squelch  
controls:  
By selecting a memory channel (see page 22)  
By pressing the CALL key  
Direct Keyboard Frequency Entry  
VHF BAND  
UHF BAND  
You can enter specific frequencies directly into the  
transceiver. If you don’t have a particular freqency  
to enter, we suggest you try 145.050MHz.  
1
Press the BAND key to change the primary band  
from UHF band to VHF band.  
2
If the transceiver is in the Memory mode or CALL  
mode, press the VFO key to select the VFO mode.  
1
Rotate the VOL control clockwise until a signal or  
noise is heard coming from the speaker.  
3 Press the numeric 4 key. A 4 is entered as the  
10MHz digit, and the 1MHz and below digits change  
to -.  
2
3
Rotate the tuning control to selected an open  
channel.  
Rotate the SQL control clockwise until the noise just  
disappears and the BUSY indicator turns off. This  
point is known as the Squelch Threshold point.  
4 Press the BAND key.  
5
Repeat steps 1 to 3, and adjust the squelch of the  
other band.  
4 Press numeric keys 5,0,5,and 0.  
12  
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Notes  
For the European version and some other markets,  
1 If the frequency step of the UHF band is 10 or  
20 kHz, the 1 kHz digit becomes zero  
automatically when you enter the 10kHz digit.  
2 If you press an invalid key, the valid value  
nearest to that number is entered.  
3 If you do not press a key within 10 seconds, the  
normal frequency display returns.  
4 If you press the VFO key during input, the digits  
showing - return to the values that appeared  
before the direct entry mode was selected.  
Next press numeric keys 0 and 5.  
If the frequency step is 12.5 or 25 kHz, the input  
ends with the 10-kHz digit. The 10-kHz keys and  
frequencies set with the keys are listed below.  
5
The transceiver actually changes frequency only  
after the 1 kHz digit is entered. The 1 kHz digit is  
not displayed if it is a zero.  
Frequency  
Frequency  
Key  
Key  
0
1
2
3
4
00  
12.5  
25  
37.5  
37.5  
5
6
7
8
9
50  
62.5  
75  
87.5  
87.5  
If you do not enter the 1 kHz digit, the indicator  
flashes and the transceiver defaults to the previous  
operating frequency.  
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Using the Tuning Control  
3 Press the any key except POWER, LAMP and MONI  
key.  
The tuning control selects frequencies in up or down  
sequentially.  
The displayed step size is set, and the normal  
frequency display returns.  
Rotate the tuning control clockwise or  
counterclockwise to select the desired operating  
frequency.  
Changes in the Displayed Frequency  
4 Step Size Selection  
As you change from one step size to another, the  
displayed frequency also changes, as illustrated in  
the accompanying charts.  
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:  
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.  
Press the F key for longer than one second then  
press the 3 key. The current frequency step size will  
be displayed.  
1
From step size  
5, 10, 15, or 20  
Frequencies  
To step size 12.5 or 25  
Display as  
0, 5, 10, 15  
0
20, 25, 30, 35  
40, 45, 50, 55  
80, 85, 90, 95  
2 5  
5 0  
7 5  
2 Rotate the Tuning control until the desired tuning  
step size appears in the display. The frequency step  
is indicated in the chart below.  
60, 65, 70, 75,  
14  
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5 Programmable VFO Tuning Limits  
or 20  
size 5,10, 15,  
To step  
or 25  
step size 12.5  
From  
This radio provides the capability of programming the  
VFO tuning range, in 1 MHz band segments, as well  
as providing a separate programmable band scan  
function. (See page 26)  
Display as  
Frequencies  
0
0
12.5  
25  
10  
20  
30  
50  
60  
70  
80  
For example you could tell the transceiver that you  
only wish to tune the 144.000 MHz and 145.000 MHz  
band segment by specifying any frequency within  
these two segments.  
37.5  
50  
The Tuning controls would then only tune within  
these specific bands. The procedure for specifying  
the bands is described below.  
62.5  
75  
1
Select the desired lower tuning limit.  
For example you might want to select the 144 MHz  
band and dial up 144.100 MHz.  
87.5  
2 Press and hold the M key for longer than one  
second, then press the 1 key. This selects the lower  
frequency limit for the programmable VFO.  
3 Select the desired upper tuning limit.  
For example you might want to select the 145 MHz  
band and dial up 145.100 MHz.  
4 Press and hold the M key for longer than one  
second, then press the 2 key. This selects the  
upper frequency limit for the programmable VFO.  
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6 Basic Receiving Functions  
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.  
When receiving a signal, the Main/Sub S-meter  
deflects and the Main/Sub BUSY indicators appea  
Rotate the volume control to the desired level.  
VFO tuning range  
Note  
For information about more advanced receiving  
capabilities, see Enhanced Receiver Function on  
page 48  
146.000  
147.000  
144.000  
145.000  
I
I
I
I
I
To clear the programmed limits simultaneously reset  
the VFO memory using the procedures discussed on  
page 19.  
You can reprogram either limit independently by  
following the appropriate instructions above.  
16  
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TRANSMITTER  
OPERATION  
WARNING:  
Before you attempt to transmit, attach an antenna  
2 Changing Transmitter Output Power  
Press the F key, then the D/LOW key to select three  
different transmitter output power levels. Repeat this  
function to stop through the power level selections.  
The actial transmitter output power for this unit  
depends on the power supply used. Indicators will  
appear on the display to tell you which level you  
have selected.  
with a low standing wave ratio to the antenna  
connector. Failure to provide a proper load may  
cause damage to the final amplifier section. Always  
check that the frequency is clear before transmitting.  
1 To transmit, follow these steps:  
1
Use any of the frequency selection methods  
discussed on page 12 to select an operating  
frequency.  
You can select the transmitter output for both the  
VHF and the UHF band.  
2
Listen to the frequency to see if it’s occupied before  
attempting to transmit on it.  
The “E and L” indicators show the Economic Low  
power position. Use Economic Low power for line-  
of-sight short-distance communication.  
3 Press the PTT (Press to talk) switch. The ON AIR  
indicator and battery level meter will appear.  
The “L” indicators shows the Low power position.  
Use Low power for short-distance communication.  
4 Speak into the microphone from the recommended  
distance of 5 cm (2 inches). Talking closer or farther  
away can result in loss of clarity, an excessively wide  
transmit signal, or weak audio.  
5
Release the PTT switch to return to the receive  
mode. The ON AIR and battery level meter  
indicators should go out.  
17  
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No indicator means the high power position has been  
selected. Use high power for maximum transmitter  
power.  
3 TX. Stop Function  
The TX Stop function allows you to temporally  
disable the transceiver transmit, preventing  
accidental or unauthorized transmission.  
See the high power CAUTION on page 5.  
Press the F key, then press the f2/TX.S key to turn  
the TX. Stop function on or off.  
Output Power(watts)  
(Apprrox.)  
144MHz  
430/440MHz  
TX.S  
H
L
L
EL  
H
EL  
2.0  
0.01  
0.01  
0.01  
0.01  
PB-13,18  
0.5 0.02 2.0 0.5  
5.0 0.5 0.02 5.0 0.5  
2.0  
5.0 0.5 0.02 5.0 0.5  
4 Time-Out-Timer  
Alkaline Battery  
0.5 0.02 2.0 0.5  
This transceiver has a time-out-timer function to  
prevent possible problems caused by continuous  
transmission. This function forcibly stops continuous  
transmission after 10 minutes. When the timer times  
out, the transceiver beeps and automatically returns  
to the RX mode. Press the PTT switch to transmit  
again.  
I
The time-out-timer function cannot be turned on or  
off.  
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18  
USING THE MEMORY  
Factory Default Settings  
1 Microprocessor Memory Backup  
4 4 0/ 4 30 MHz Band  
144 MHz Band  
All memory channel data is backed up in EEPROM.  
It is not lost unless you reset the memory.  
144 MHz  
144 MHz  
VFO Frequency  
Call Channel  
Frequency  
All other data that you set is retained by a secondary  
lithium battery that will provide memory backup for  
about 20 days if you remove the battery pack or  
external DC power.  
Frequency Step  
Tone Frequency  
5 kHz/12.5kHz 25 kHz  
88.5 Hz/1750 Hz 88.5 Hz/1 750 Hz I  
A fully discharged battery will require approximately  
10 hours to reach full charge after installing a  
battery pack or external power.  
VFO Reset  
Press and hold the F key and turn on the POWER  
switch to reset the microprocessor’s VFO memory,  
without destroying the memory channel, CLOCK  
data, message memory data, automatic dialer DTMF  
memory, Programmable SCAN tuning range,  
PAGING code, or CALL channel data.  
2 Initializing The Memory  
Press and hold the M key and turn on the power to  
reset the memory. All the LCD indicators will appear  
on the display. Release the M key. This resets all  
user programmed data to the factory defaults.  
3 Memory Channel  
This transceiver provides 50 memory channels.  
In addition to serving as a normal memory channel  
Memory Channel 1 is used to store the frequency for  
the Priority Alert function.  
1 9  
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4 Memory Contents  
2 Press the M key. The memory indicator will flash.  
Each memory channel can store information as  
shown in the chart below.  
X =Can be stored in memory  
Normal  
Channel  
Split  
Channel  
RX frequency  
TX frequency  
Tone(CTCSS) frequency,  
Tone (CTCSS) status  
3 Use the keypad to select any desired memory  
channel number (O-49). Use a two-digit number,  
such as 02 for channel 2 or 15 for channel 15, to  
enter the data in memory.  
Frequency step  
X
X
Shift status, REV on/off  
DTSS code. DTSS status  
N / A  
X
4 Press the MR key.  
5 The memory channel number will turn off, indicating  
that the receiver data has been properly stored.  
5 Entering Memory Data  
Entering memory data is a simple operation requiring  
just a few keystrokes to store all the data you  
require.  
Clearing a Memory Channel  
Entering Normal Simplex/Repeater  
Channels  
Use the following procedure to clear the contents of  
an individual memory channel:  
1
Select the desired receive frequency, offset, and any  
other information you desire. If the desired  
frequency is already on the display, continue to step  
2.  
1
Select the memory channel to be cleared.  
2 Press the M key for longer than one second, then  
press the MR key.  
3 The selected memory channel number is removed  
from the display and the data is cleared from the  
memory.  
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6 Entering Split Channel Frequencies  
1
Press the MR key. The programmed receiver  
frequency appears on the display with “+” and  
“-‘‘ offset direction indicators showing that this  
channel has an odd split entered.  
Use the numeric keypad to select the desired  
receiver frequency, tone and other information. If the  
desired frequency is already on the display, continue  
to step 2.  
Press the M key. The memory indicator will flash.  
Use the keypad to select any desired memory  
channel number (O-49). For example, use a two  
digit number, such as 02 for channel 2, or 15 for  
cannel 15, to enter data in memory.  
Press the MR key.  
2 Press the F key, then press the SHIFT/REV key, or  
just the PTT switch, to check the transmit frequency.  
The transmit frequency will appear on the display.  
The memory channel number will turn off, indicating  
that the receiver data has been properly stored.  
Use the numeric keys to enter the desired transmit  
frequency.  
7 Entering The Call Channel Frequency  
Press the M key. The memory channel indicator will  
flash.  
1
Use the numeric keypad to select the desired  
receiver frequency, tone and other information.  
Press and hold the PTT switch and then press the  
MR key.  
2 Press the M key, then press the CALL key within 10  
seconds. You have now entered the call channel  
frequency.  
The TX frequency is set. The system returns to its  
previous state.  
If entering an odd split channel, continue with steps 3  
to 6.  
Note  
You will hear an error sound if you attempt to recall  
a memory when nothing is stored in that memory.  
21  
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If you install the optional ME-l, you cannot recall  
more than 100 memory channels in the two digits  
recall mode (initial states).  
3 Select the desired call channel transmit frequency.  
4 Press the M key.  
Press and hold the PTT switch and press the CALL  
key.  
5
You must change the function to three digit recall  
mode.  
6 Release the PTT switch.  
1
Press and hold the MR key and turn the power on.  
The VHF band frequency display changes to the  
recall selection mode with the numeric keys.  
8 Recalling Memory Channels  
2 Select -3 with the right encoder.  
Press the MR key.  
3
Press any front panel key to return to the normal  
frequency display.  
You can change the memory channel by the  
following two methods.  
Using the Tuning Control  
9 Memory Shift  
Rotate the tuning control clockwise or  
counterclockwise to select the desired Memory  
Channel.  
Press the F key, then press the VFO key to copy the  
contents of a memory or call channel to the VFO  
without changing the data in memory. Doing this  
allows you to begin tuning at the point specified by  
the memory channel data.  
Using the numeric keypad  
Select any desired memory channel number (O-49).  
For example, use a two digit number, such as 02 for  
channel 2, or 15 for cannel 15.  
You cannot perform memory shift if the displayed  
frequency exceeds the programmable VFO setting  
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22  
4 Enter your message with the keypad. See the list on  
page 45 for the key combinations for each letter.  
10 Memory Channel Character Display  
You can display the memory channel frequency with  
your own spelling. It may be up to six characters  
long. You can use numerics 0 to 9 and the letters A  
to z.  
5 If you enter the wrong message, press the VFO key  
to start over step 4.  
6 Press the MR key at the end.  
Function Setting  
7 You can display a message from other memory  
channel by performing steps 2 to 6 again.  
Press and hold the f² key, and turn the power on.  
Note  
Note  
A message can be displayed for a maximum of 25  
memory channels.  
When you select this function, the memory channel  
can be displayed alphanumerically, but the total  
number of available memory channels is halved, i.  
e., 25.  
If a message is specified for a memory channel, the  
message is displayed instead of the memory channel  
number.  
To return to 50 channels, repeat the operation.  
Character registration  
If you want to display the memory channel number,  
press and hold the F key for longer than one second,  
then press the f² key.  
1
Press the MR key to enter the memory channel  
mode.  
Message Display Cancel  
2 Select a desired channel from among the memory  
channels in which you stored data using the Tuning  
1
Select the memory channel to be canceled.  
control or numeric keypad.  
_
2 Press and hold the M key for longer than one  
second, then press the f² key.  
3
Press the M key, then press the f² key to enter the  
message setting mode.  
The message display is canceled, and the memory  
channel is displayed.  
23  
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SCANNING  
In DTSS operation, scan will stop (without squelch  
You must adjust the squelch to the threshold point  
for proper scan operation. You cannot use scan in  
conjunction with the tone alert function and paging.  
Scanning occurs separately in the VHF and UHF  
bands.  
turned off) whenever it receives a s Àðnal. However,  
squelch will not open until the proper DTSS signal is  
reseived.  
In combined CTCSS and DTSS modes, scanning  
stops when the proper CTCSS tone is reseived.  
Squelch will open only if the DTSS s gnal matches  
when the scan stops.  
You can reverse the direction by turning the Tuning  
control or MESSAGE key.  
1 Hold/Resume Programming  
Hold/Resume Selection  
This transceiver provides two types of scan hold/  
resume:  
The transceiver is delivered from the factory in the  
Time Operated Scan mode. Use the following  
procedure to switch between modes:  
* Time Operated Scan  
The transceiver stops scanning on a busy channel,  
remains there for approximately 5 seconds, and then  
continues to scan even if the signal is still present.  
n
VHF Band :  
Press and hold the 8 key and turn on the power.  
* Carrier Operated Scan  
* UHF Band:  
The transceiver stops scanning on a busy channel  
and remains there until the signal drops out. It  
allows a 2 second delay before resuming scanning to  
prevent losing the station when operators change.  
Press and hold the 9 key and turn on the power.  
2 Scan operation cancel  
In CTCSS operation, scan will stop only on signals  
that contain the proper CTCSS code.  
Operation band :  
Press any key except MONI, LAMP, BAND, MHz,  
E.CHG, or MSG.  
Sub-band:  
Press the BAND key, then press the PTT switch.  
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24  
n
n
CALL / Memory Scan  
3 Scan Options  
Provides alternate scanning of the call channel and  
last used memory channel. (page 28)  
The following scan options are available:  
* Memory Scan  
V/M/C(VFO/Memory/CALL) Scan  
Scans through those memory channels that have  
data stored and that have not been locked out. This  
function operates only in the memory mode.  
Scans the VFO, the last memory channel used, and  
the call channel. (page 28)  
* Band Scan  
4 Scanning Memory Channels  
Scan proceeds over the entire band. This function  
operates only in the VFO mode. (page 26)  
n
Programmable Band Scan  
The transceiver scans only those memory channels  
that have data entered and are not locked out.  
Scanning does not start unless two channels or  
more have data entered.  
The scan range for this mode is specified in memory.  
(page 26)  
n
n
MHz Scan  
1
Adjust the SQL control to the threshold point.  
Scans over a 1 MHz range. (page 27)  
VFO / Memory Scan  
2 Press the MR key.  
3 Press and hold the MR key for longer than one  
second. The MHz indicator (decimal) flashes when  
the transceiver is scanning.  
Provides alternate scanning of the VFO and last used  
memory channel. (page 27)  
Locking Out Memory Channels  
n
CALL/VFO Scan  
This function allows you to specify which memory  
channels you want to skip during memory channel  
scan.  
Provides alternate scanning of the call channel and  
the VFO. (page 28)  
1
Select the appropriate numbers of the memory  
channels that you want to skip.  
25  
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Scanning begins toward the higher frequencies. The  
MHz indicator (decimal) flashes when the transceiver  
is scanning.  
2
Press the F key, then the 0/L.OUT key.  
A * indicator appears below the memory channel  
number on the display, indicating that channel will be  
skipped in the memory channel scan mode.  
5 Scanning pauses on a station strong enough to open  
the squelch and turn the BUSY indicator on.  
t
6 Programmable Band Scan  
This transceiver can select and scan a frequency  
range in a band.  
You can set separate limits for both VHF and UHF,  
limiting dual scan on both bands.  
3
Repeat steps 1 and 2 to lockout any other channels  
you may want to skip.  
Even if you sets the programmable band scan limits,  
the VFO tuning range is not limited unlike the  
programmable VFO function. (See page 15.)  
4 To cancel the lockout, select the memory channel  
number. If it was locked out, it will have the *  
indicator on the display.  
Press the F key and then the 0/L.OUT key. The *  
will disappear.  
For example, you can program so that the  
transceiver scans a range from 144.50 to 145.80 in  
the VHF band.  
Use the following procedure to specify the desired  
scan limit.  
5 Band scan  
1
Adjust the SQL control to the threshold point.  
1
Press the BAND key to select the desired Band.  
2
Press the Band key to select the desired Scanning  
Band.  
2 Select the desired upper scan limit.  
3 Press and hold the M key for longer than one  
second, then press the 5 key.  
3
4
Press the VFO key to select the VFO mode.  
Press and hold the VFO key for longer than one  
second.  
4 Select the desired lower scan limit.  
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26  
Initiating Programmable Band Scan  
5 Press and hold the M key for longer than one  
second, then press the 4 key.  
1
Adjust the SQL control to the threshold point.  
Notes  
2 Select a frequency between the two programmed  
scan limits.  
1 Initialize the VFO memory (VFO RESET) to clear  
both programmed limits simultaneously. Press  
and hold the F key and turn on the power. You  
can reprogram either limit independently.  
3 Press and hold the VFO key for longer than one  
second.  
The MHz indicator will flash when the transceiver is  
scanning.  
2 Programmable band scan is not initiated when  
the lower frequency limit is not in the same band  
or step size, or when it is higher than the upper  
limit frequency.  
7 MHz Scan  
1
Adjust the SQL control to the threshold point.  
2 Start the band scan or programmable band scan.  
Confirming Scan Limit  
3 Press the MHz key during band scan or  
programmable band scan. Scanning begins in an  
upward sequence over a 1 MHz range.  
* Press the F key for longer than one second, then  
press the 4 key to display the band scan lower  
frequency limit.  
Example: If the MHz key is pressed when the  
frequency is 145.02 MHz for VHF band scan, just the  
145 MHz band is scanned.  
n
Press the F key for longer than one second, then  
press the 5 key to display the band scan upper  
frequency limit.  
8 VFO/Memory Scan  
This function lets you alternately scan the VFO  
frequency shown on the display and the last-used  
memory channel.  
1
Adjust the SQL control to the threshold point.  
27  
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12 The Alert Function  
2
Press the F key, then press the MR key.  
This function allows you to monitor memory channel  
1 for activity once every 5 seconds, even when you  
are tuned to a different frequency.  
3 The VFO frequency and the last used memory  
channel are scanned alternately.  
9 CALL/VFO Scan  
1
Enter the frequency you wish to monitor in memory  
channel 1.  
1
Press and hold the CALL key for longer than one  
second in VFO mode.  
2
Adjust the SQL control to the threshold point.  
2 The frequency and CALL frequency are scanned  
alternately.  
3 Press the F key, then press the 4 key. The AL  
indicator displays.  
10 CALL / Memory Scan  
4 A beep will sound when a signal is present.  
1
Press and hold the CALL key for longer than one  
second in memory channel mode.  
5
Press the F key and the 4 key again to turn this  
function off. The AL indicator will disappear from the  
display.  
2 The memory channel in use and CALL frequency are  
scanned alternately.  
When using the Alert function, be aware that:  
1 1 V/M/C(VFO/Memory/CALL) Scan  
(except Europian version)  
* Channel 1 CTCSS programming is ignored.  
1
Press the F key, then press the CALL key.  
n
You will not hear voice communication while  
scanning memory channel 1, only a beep if a signal  
is present.  
2 The VFO frequency, last used memory channel, and  
CALL frequency are scanned alternately.  
n
Memory channel 1 is also monitored when the dual  
band and single band are displayed.  
28  
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REPEATER OPERATION  
1 Transmitter Offsets  
3 Automatic Offset Selection  
All amateur radio repeaters use a separate receive  
and transmit frequency. The receive frequency may  
be above or below the transmit frequency. Most  
repeater configurations fall into one of the following  
categories.  
n
U.S.A. and CANADA versions  
The TH-78A is programmed according to the  
standard ARRL(Amateur Radio Relay League) Band  
Plan for repeater offset direction. You can override  
this programming by using the SHIFT key as  
described in the preceding paragraph.  
UHF Band  
(European version  
Offset  
n
European version  
Direction  
VHF Band UHF Band only)  
The TH-78E automatic offset is programmed as  
follows.  
144.00  
145.600  
- 600 kHz  
145.800  
SIMPLEX  
SIMPLEX  
2 Selecting the Offset Direction  
n
To cancel automatic offset  
Press the SHIFT key. The transceiver will shift from  
one offset direction to the other, such as from + to  
-, or from - to simplex where no indicator shows.  
In the European version (UHF band ), - change  
t o - - .  
Press and hold the BAND key and switch the power  
on.  
This operation switches automatic offset mode on or  
off.  
2 9  
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5 The Reverse Function  
4 Manual Offset Selection  
Some repeaters use a ’ reverse pair’, that is, the  
transmit/receive frequencies are the reverse of other  
repeaters.  
The factory default sets the automatic offset  
frequency. You can select any offset frequency in  
the range 0 to 99.9 MHz in 100 kHz steps.  
For example, repeater A uses 146.000 as an input  
frequency, and 146.600 as an output frequency.  
Repeater B might use 146.600 as an input  
frequency, and 146.000 as an output frequency. It  
would be quite inconvenient to have to reprogram the  
transceiver each time you want to use these  
repeaters.  
1
Press and hold the SHIFT/REV key and switch the  
power on.  
2
Press the F key for longer than one second, then  
press the SHIFT/REV key.  
The current offset frequency is shown on the LCD.  
3 Rotate the Tuning control, and select the desired  
offset frequency.  
Press the F key, then press the SHIFT/REV key.  
The R indicator displays to remind you that you are  
working a reverse pair.  
4 Press any front panel key to return to the normal  
frequency display.  
To return to the normal offset, reset the VFO.  
(see page 19)  
Note  
Selecting an offset frequency that would result in  
the radio transmitting outside its intended range  
will cause an error tone to be sounded and  
transmit to be inhibited. Reselect a valid offset  
frequency if this occurs.  
Press the F key, then press the SHIFT/REV key  
again to return to normal. The R indicator will  
disappear.  
This function is also useful in checking the repeater  
input frequency, allowing you to determine if you are  
in range for simplex communication.  
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30  
6 Tone Operation  
2 Rotate the tuning control to select the desired tone  
frequency(Hz)  
Some repeaters require a control signal to activate  
them. Several different methods are currently in  
use.  
In the United States, sub-audible tones are  
sometimes used. This transceiver will generate sub-  
audible frequencies.  
In Europe and the United Kingdom, a 1750 Hz tone  
is used in transmitting. Simply press and hold the  
TONE key to transmit the access code. You need  
not press the PTT switch. A 1750 Hz tone encoder  
is included with models delivered to Europe and the  
United Kingdom.  
3
Press any key or simply wait 10 seconds for the  
transceiver to resume the previous mode.  
Tone Function Operating  
Press the TONE key. A “ T ” indicator appears on  
the display, and the transmitter sends the desired  
tone when you press the PTT switch.  
Selecting Tone Frequencies  
If the optional CTCSS unit (TSU-7) is not installed,  
you cannot change the tone frequency.  
Press the F key for longer than one second, then  
press the TONE key. The current tone frequency  
will appear on the display.  
31  
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7 Autopatch Operations  
Note  
Some repeaters require a special key sequence to  
activate the autopatch function. Check with the  
control operator for this sequence.  
(U.S.A. versions only)  
Some repeaters offer a service called autopatch.  
This feature allows you to dial a telephone number  
from your transceiver and carry on a telephone  
conversation.  
You will hear and transmit a single tone if you press  
the VFO key before pressing one of the numeric  
keys (see the chart at right).  
This function requires the use of a DTMF (Dual Tone  
Multi Frequency) keypad. The transceiver also  
provides four additional keys - A, B, C, and D - in  
addition to the normal 12 keys found on your  
telephone.  
Selecting Delay Time  
These keys are required for various control  
operations by some repeater systems. A chart listing  
the various tone frequencies generated by the  
keypad is provided below.  
(Direct keyboard entry only)  
It’s easier to enter a long string of numbers if you  
don’t have to hold down the PTT switch while you  
enter them. To instruct the transceiver to remain  
keyed for 2 seconds after pressing each number:  
1 Turn the power off.  
2 Press and hold the 2 key and turn on the power.  
3 Release the 2 key.  
You are now able to enter numbers without pressing  
and holding the PTT switch.  
To activate the keypad:  
Repeat 1 and 3 to cancel the delay time.  
Press and hold the PTT switch  
Dial the number just as you would on a normal  
telephone by pressing the appropriate keys.  
32  
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4 Select the channel (O-9) where you want to store  
the DTMF code and press the key for that channel.  
The DTMF code is stored and the previously  
displayed frequency reappears.  
8 DTMF Memory  
You can store 10 DTMF telephone numbers up to a  
maximum of 15 digits long in memory.  
5
If you enter the wrong number, press the VFO key to  
start over from step 1.  
Storing DTMF Codes  
6 To stop during entry, press the BAND key. The  
previously displayed frequency appears on the  
display.  
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  
Recalling Stored DTMF Codes in Receive Mode  
3 Press the MR key after entering the DTMF code.  
1
Press and hold the F key for longer than one  
second, then press the MHz key.  
2 Press a number key (O-9). The corresponding  
stored DTMF code is displayed.  
33  
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OPERATION AS A REPEATER  
Making a DTMF Call  
(U.S.A., CANADA versions only)  
1
Hold the PTT switch down and press the MHz key.  
This transceiver is capable of operating as a  
repeater. The transceiver listens on both bands  
simultaneously. As soon as a signal is received on  
one band, the other shifts from receive to transmit  
and re-transmits the incoming signal.  
2 Press the numeric key (O-9) for the channel where  
the DTMF code is stored.  
3 The DTMF code appears on the display.  
Function setting  
1
Select the operating frequencies and adjust the  
squelch controls to threshold.  
2 Press the F key for longer than one second and then  
press the 0 key. The MHz dot(.) will flash.  
To return to the normal function, perform step 2  
again.  
Notes  
1 The Time-out Timer function will automaticaly set  
to 3 minutes mode.  
2 Combinations of SHIFT and CTCSS can be  
used in the Repeater mode. DTSS and  
PAGING will not work in this mode.  
Note  
Transmission continues until the whole code string  
is recalled, even if the PTT switch is released.  
You cannot stop DTMF code transmission once it  
is initiated.  
CAUTION  
This equipment can be extremely susceptible  
to lightening strike damage or intermodulation  
distortion if it is operated on mountain top  
locations.  
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34  
CTCSS OPERATION  
The desired band will now operate in the Tone  
The CTCSS unit (TSU-7) is included only with  
models delivered to the United States and Canada.  
The CTCSS unit (TSU-7) installation instruction are  
shown on page 63.  
Squelch mode. That is, squelch will not open until  
the selected tone is received as a portion of the  
incoming signal.  
If you want to set the CTCSS function to another  
band, repeat steps 1 and 2.  
If the Continuous Tone Code Squelch System  
(CTCSS) function is activated, the transceiver will  
not open squelch until it receives the proper PL tone  
(tone squelch).  
In duplex operation if CTCSS is activated in the  
Sub and Main bands it is not active during  
Selecting Tone Frequencies  
You can select the desired tone frequency according  
to the procedure on page 31.  
Operating the CTCSS Function  
1
Press the BAND key to select the desired band.  
2 Press the F key, then press the 3 key. The CT  
indicator will appear on the display.  
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THE DUAL TONE SQUELCH SYSTEM (DTSS)  
3 Enter a three-digit number on the keypad.  
DTSS allows squelch activation in the receive mode  
when the transceiver receives a three-digit code  
matching the DTSS code you have selected.  
Note  
Pressing a non-numeric key cancels code  
selection mode. Code selection cancels  
automatically if you make no entries within 10  
seconds.  
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.  
2 Using the DTSS Function  
1
DTSS Code  
1
Adjust the squelch to the threshold point.  
You can select DTSS codes from 000 to 999 in the  
VFO mode. Store them either in memory channel or  
in the call channel.  
2 Press the BAND key to select the desired band.  
3 Press the F key, then press the 2/DTSS key. The  
DT indicator will appear on the display.  
Selecting DTSS Codes  
1
Press the BAND key to select the desired band.  
2
Press and hold the F key for longer than one  
second, then press the 2/DTSS key.  
4 Squelch opens when you receive the proper code.  
36  
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1 Paging Operation Overview  
Paging uses a DTMF (Dual Tone Multi Frequency)  
signal and is useful in calling members of a group, a  
specific station, or for waiting for a call from another  
station.  
1
Set your station code.  
F: 145.020MHz  
Individual Code: 111  
Enter the paging mode.  
I
F: 145.020MHz  
lndividual Code 444  
Member 3  
F: 145.020MHz  
lndividual Code: 333  
Member 2  
F: 145.020MHz  
lndividual Code 222  
Member 1  
You should determine the common group paging  
code and individual codes in advance. You can  
enter three-digit codes from 000 to 999.  
Unlike DTSS, the calling station code displays on the  
transceiver so the receiving party can identify the  
calling station. If called with an individual code, the  
individual caller code displays. When called with a  
group code, the group code displays.  
Call  
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38  
4 Sending Pages (Calling)  
The chart shows how members of a group might  
communicate with each other. You may wish to  
refer back to this chart as you read the examples on  
the following gages.  
1
Turn to the predetermined frequency.  
2
Press the F key then press the 1 key to enter the  
Paging mode. The Paging function of the other  
transceiver must also be on.  
Your station ID code is preset in memory A. You  
3 Press and hold the F key for longer than one  
second, then press the 1 key to enter the code  
setting mode.  
Group Communication Network Example  
4 Use the tuning control to select the memory channel  
where the local station code is stored  
145.020MHz  
111  
Predetermined frequency  
Your Individual code  
Individual code 222  
Individual code 333  
Individual code 444  
Member 1  
Member 2  
Member 3  
Group code  
Calling All Group Members  
789  
Select the group code memory channel to call all  
members of a group. In the example below, the  
group code is stored in channel 5.  
Your memory  
A 111  
0
1 222  
2 333  
3 444  
4
5 789  
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Press the PTT switch. Communication is possible in  
both the Paging and code setting mode.  
1
Select the local station code memory. In this  
example, we have selected memory 3.  
2 If the local station code is not in memory, enter it in  
memory 0.  
In the code setting mode  
In the Paging mode  
3 Press the PTT switch.  
4 You can cancel Paging once you have established  
contact.  
145.02 MHz  
In the Paging mode  
145.02 MHz  
444*111  
The group code 789 and your station ID code 111  
are transmitted.  
Calling a Specific Group Member  
Local station code 444 and your station ID code 111  
are transmitted. The DTMF sounds as the codes are  
transmitted.  
Use the following procedure to call a specific group  
member:  
41  
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3 Press the PTT switch to respond to the calling party.  
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 a Group code  
1
If the calling station transmits the group code, the  
group code will display. The Paging Mode Memory  
Channel on your display becomes a number other  
than 0 (in this case a 5) to indicate a group call.  
Receiving a Page with an Individual Code  
1
When the proper code is received, your squelch will  
open and you will hear an alert tone sequence  
coming from the speaker.  
2 When the proper code is received, your squelch will  
open and you will hear an alert tone sequence  
coming from the speaker.  
2
If the calling station transmits your individual call the  
display will show Paging Mode Memory Channel 0,  
and will display the ID code of the calling station.  
Our example uses a station calling code of 444.  
3 Press the PTT switch to respond to the calling party.  
Note  
An E indicator appears on the display if the local  
station code cannot be recognized.  
Note  
You can communicate more efficiently if you  
cancel Paging after contacting the local station.  
42  
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6 Canceling Signal Squelch  
To Lock Out Codes  
Squelch will not open when operating in the paging  
mode when the paging codes do not match. It is  
possible to reprogram the transceiver so that squelch  
will open regardless of the incoming page code.  
1
Enter the code setting mode (page 39) and use the  
tuning control to display the memory channel number  
to be locked out.  
Even when signal squelch is canceled, a beep  
sounds and the individual code of the local station is  
displayed when the proper code is received.  
2 Press the F key, then press the 0 key. The *  
indicator displays and memory locks out.  
3 To cancel, repeat step 1 and 2.  
Canceling signal type squelch  
1
Press and hold the F key for longer than one  
second, then press the CALL key.  
8 Answer-Back  
(U.S.A., CANADA versions only)  
2 To return signal squelch to the original state, repeat  
step 1.  
If this function has been enabled and you receive a  
signal with your paging code, the transceiver  
automatically transmits your code back to the person  
paging you to receipt of the signal.  
7 Locking Out Codes  
This function is used with the Tone alert system.  
You can lock a Paging function code only during  
reception. The Paging code will be transmitted even  
if it’s locked out. The squelch unlocks if an  
individual code is stored in memories A and 1  
through 6 and the codes match.  
Function setting  
1 Press and hold the MHz key, then turn the power on.  
When you hear the beep, then release the MHz key.  
2
Press the F key, then press the 5 key to select the  
Tone alert system.  
This remains true even if one local station  
communicates with another and the code is not  
locked out. Locking out codes is desirable when you  
call another group member, but don’t want to receive  
communications between other individuals in the  
group.  
To return to the normal function, perform step 2  
again.  
43  
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MESSAGE TRANSMISSION AND RECEPTION  
2 Using the Message Memory.  
This transceiver has 10 message memory channels.  
Memory write procedure  
This function lets you transmit your message to the  
other party or display a message from the other party  
on your transceiver using the DTMF (Dual Tone Multi  
Frequency) signal and alphanumeric display.  
1 Press the M key, then press the MESSAGE key to  
enter the message setting mode.  
You can use the numerics 0 to 9 and letters A to Z.  
The message that can be transmitted and received  
at one time can be up to six characters long.  
Note  
This function is used with DTSS or paging.  
1 Message Transmission Modes  
You can transmit your message by one of the  
following two methods.  
2 Enter your message with the DTMF keypad. See the  
list on the next page for the key combinations for  
each letter.  
n
n
Transmit your message directly using the DTMF  
keypad. You must press the # key at the beginning  
and end of the character.  
3 If you enter the wrong message, press the VFO key  
to start over step 1.  
See the list on the next page for combinations of  
keys for alphabets.  
4 Press the MR key at the end.  
Store your message in the message memory, and  
transmit it.  
The MESSAGE display begins flashing.  
44  
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Relationship between input characters and keys (Note: “ + ”  
means press two keys in sequence (with in 2 seconds))  
lnpu t  
Key  
lnput  
Key  
characters  
operation  
characters  
operation  
0
1
0
1
Z
B
E
H
K
N
R
1+B (M)  
2 + B ( M )  
3+B (M)  
4+B(M)  
5+B (M)  
6+B (M)  
7+B (M)  
8+B (M)  
9+B (M)  
(space)  
2
3
2
3
L
O
S
V
Y
5+c (f²)  
6 + C (f²)  
7+C (f²)  
8+C (f²)  
9+C (f²)  
U
X
Fixed message  
CALLME (Please call me)  
FONEME (Please phone me)  
ROGER (Roger)  
ATHOME (At home)  
45  
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3 You can perform steps 1 and 2 any number of times  
during transmission. Therefore, if you use 10  
message memory channels, you can transmit a text  
of up to 60 characters.  
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.  
5 Message Reception  
3 Message Memory Check  
1
When the DTSS or paging function is on, press the F  
key, then the MESSAGE key.  
1
Press and hold the F key for longer than one  
second, then press the MESSAGE key.  
2 The MESSAGE display lights, and you can now  
receive a message.  
2
Press a desired key (0 to 9).  
3 To return to the normal frequency display, press any  
key (except 0 to 9 key).  
When a message is received, it is displayed, and the  
MESSAGE indicator flashes.  
n
DTSS mode  
4 Message Memory Transmission  
1
Press the PTT switch, then press the MESSAGE  
key. The MESSAGE indicator will appear on the  
display.  
2
Hold down the PTT switch, and press a desired key  
(0 to 9).  
Note  
Message transmission continues even if you  
release the PTT switch during transmission.  
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46  
6 Receive Message Memory  
H Paging mode  
This transceiver has 10 incoming message memory  
channels, in which received messages are stored.  
If you press the MESSAGE key in the message  
mode, the last stored message is displayed.  
You can store your message in memory using one of  
the following two methods. You can select the  
desired mode.  
n
n
If there is data in all 10 message memory channels,  
new data is written into channel 0 (Factory default).  
Press any key  
If data is stored in all 10 message memory channels,  
new data is not written into any channel.  
Press and hold the MESSAGE key, and switch the  
power on to change this function.  
Receive message memory clear  
Press and hold the M key for longer than one  
second, then press the MESSAGE key.  
47  
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ENHANCED RECEIVER FUNCTIONS  
5 The T.ALT and BUSY indicators display and the  
1
The Tone Alert System  
transceiver beeps on and off for approximately 5  
seconds when a signal is present.  
The Tone Alert function provides an audible alarm to  
indicate when someone is transmitting on the  
frequency you are monitoring.  
6 The time when the signal was received will be  
displayed. The time is changed each time when a  
new signal is received.  
If you use the tone alert function with the CTCSS,  
paging, or DTSS function, you can use the functional  
more effectively since you can wait for a call from a  
specific remote station.  
7
8
Press the PTT switch to release the T.ALT function.  
Press the F key, then press the 5 key again to  
completely release the T.ALT function.  
If you set the T.ALT function you will not hear voice  
communications.  
The Automatic Power Off function is disabled during  
T.ALT operations.  
T.ALT to function properly in CTCSS, the  
incoming signal must be present for approximately  
1
Press the BAND key to select the desired band.  
2 Adjust the squelch control to respective threshold.  
3 Select the desired function if you wish to use it.  
Selecting a Beep Sound  
Press and hold the 5 key and turn on the POWER  
switch to alternate the beep sound between a tone  
alarm and telephone type ring.  
4 Press the F key, then press the 5 key. The T.ALT  
indicator will appear on the display.  
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48  
4 Lamp  
2 Monitor  
Even if the squelch or CTCSS, DTSS, or PAGING is  
If you press the LAMP key, the LCD illumination  
ON, you can monitor the channel by pressing the  
MONI key.  
lamp lights to help you operate your transceiver at  
night.  
You can use this lamp at any time.  
1
Press the F key, then press the LAMP key.  
2 To cancel, press the F key, then press the LAMP  
key again.  
5 Key Lock  
Press the F key then press the M key.  
3 BeepOff  
The LOCK indicator will appear on the display, and  
all keys except LAMP, MONI, E.CHG, F+ M and  
PlT, are locked.  
The transceiver produces beeps when you push the  
front panel keys. If you want to disable this  
function, press and hold the 6 key and press the  
POWER switch.  
Press the F key then press the M key again to  
cancel the key Lock function.  
49  
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6 Volume adjustment when you use an  
earphone  
7 Switching speaker output when a  
speaker-microphone is connected  
r CAUT/ON  
If you connect a speaker-microphone to the external  
speaker jack, you will hear the mixed receive tones  
of the VHF and UHF bands from the speaker-  
microphone. These tones can be separated to the  
transceiver’s internal speaker and the speaker-  
microphone.  
If you use an earphone, you may feel that the  
volume is too high even if the volume level is set to  
minimum. We recommend that before connecting  
the earphone, you set the volume level to the  
minimum and perform the following operation to  
protect your ears.  
1
Press the F key then the 6 key.  
You will hear the receive audio of the active band  
from the speaker-microphone and the receive audio of  
the sub-band from the internal speaker.  
1
Press and hold the 4 key and turn the power switch  
This operation reduces the volume below the original  
minimum volume level.  
2
If you want to change the speaker output, press and  
hold the F key for longer than one second, then  
press the 6 key.  
2 Minimize the volume levels for both bands.  
Connect your earphone to the External Speaker jack.  
3
4 Set the volume to a comfortable level.  
If you perform this operation, the internal speaker  
volume is also reduced. If you stop using the  
earphone, repeat step 1 to return to the original  
50  
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8 Automatic Band Change Function  
9 Simultaneous Receive Function of Two  
Signal in the Same Band  
The Automatic Band Change function automatically  
switches transmit control from the RX/TX band to the  
RX only band whenever a signal is received that  
opens squelch on the RX only band.  
This transceiver has been factory-programmed to  
receive one VHF signal and one UHF signal at the  
same time. It is also possible to receive two signals  
in the same band at the same time. While displaying  
the same band, two different signals can be selected.  
1
Press the F key, then press the BAND/A.B.C. key  
within 10 seconds.  
The A B C indicator displays.  
* To simultaneously receive two VHF band signals  
1
Press the BAND key to select the UHF band.  
2 Press the f² key. The UHF band display also shows  
the second VHF band frequency.  
2
3
If a signal comes in on a RX-only band and the  
BUSY indicator lights, the PTT indicator lights for the  
receive-only band.  
If you now press the PTT switch, the A.B.C. function  
turns off, and you can respond to the call from the  
other party.  
* To simultaneously receive two UHF band signals  
1
Press the BAND key to select the VHF band.  
2 Press the f2 key. The VHF band display also shows  
the second UHF band frequency.  
When the incoming signal drops out three seconds  
51  
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11 MHz Mode  
Notes on simultaneous in Band reception  
1 When two signals on the same band are  
received simultaneously, the receive  
performance, such as image interference  
and sensitivity, may be reduced.  
2 If the two frequencies are the same, the  
volume may decrease at some VOL control  
positions.  
If you use this function, you can change the  
frequency in l-MHz steps.  
Press the MHz key.  
The 100-kHz digit and lower digits of the operation  
band go blank. When you turn the tuning control,  
the frequency changes in l-MHz steps.  
To return to the normal frequency display, press any  
front panel key (except E.CHG key) or wait 10  
seconds.  
To return to normal operation press the f² key again.  
12 Channelized Frequency Display  
10 Single Band Operation  
The frequency display can be changed to display  
channel numbers instead of the operating frequency.  
This function makes use of the data you have stored  
in memory for this function. Channel 1 is memory  
channel 1, Channel 2 is memory channel 2, etc.  
When you press the DUAL key, the band for which  
the PTT indicator is on is selected, and you can  
perform a single-band operation with that band.  
1
Turn the POWER switch off.  
2 Press and hold down the 3 key, then press the  
POWER switch.  
Channel number are displayed for both bands  
3 The channel number can be changed with the tuning  
control.  
When you press the BAND key, the band in the  
single-band operation changes.  
4 To return to the normal frequency display, perform  
steps 1 and 2 again.  
Each time you press the DUAL key, you toggle  
between single-band and dual-band operation.  
52  
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POWER SAVER FEATURES  
2 Automatic Power Off (APO)  
1 The Battery Saver Mode  
1
If no signal is received and if you have not performed  
any operations within 59 minutes, a 5 second audio  
tone sounds.  
This transceiver provides a battery saver mode to  
conserve on battery power. The battery saver circuit  
activates 10 seconds after the last key is pressed.  
The squelch must be closed. This function  
deactivates whenever a key is pressed or the  
squelch opens.  
2
The transceiver switches the power off 1 minute after  
this tone sounds.  
The battery saver does not operate during scanning  
operations.  
Press and hold the F key for longer than one second  
then press the MR key to activate or deactivate the  
battery saver function.  
Battery Save Time Selection  
3 Press and hold the F key for longer than one  
second, then press the VFO key to turn off the APO  
function.  
You can change the OFF time when the battery save  
function is in effect.  
1
Press and hold the 7 key and turn the power on.  
2
Select the OFF time with the Tuning control.  
You can select 0.4,0.6,0.8 (initial setting), 1.0,1.5,  
2.0, or 3.0 seconds for the off-time.  
3 To return to the normal frequency display, press any  
front panel key.  
53  
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CLOCK FUNCTION  
2 Timer Function  
If you press the F key, then the 7 key in receive  
mode, the clock is displayed on the Sub band  
display. 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 display  
returns.  
Switch-on Timer Setting  
1
If you press and hold the F key for longer than one  
second, then the 8 key, you enter the switch-ON  
timer setting mode, and the TIMER.ON indicator and  
the “Hour” display will flash.  
1 Time Setting  
1
Press and hold the F key for longer than one  
second, then the 7 key, the clock is displayed on the  
Main band display.  
2
Set the “Hour” display to the current hour with the  
Tuning control.  
3 Press the M key.  
2
Set the “Hour” display to the time you want the  
transceiver to turn on with the Tuning control.  
4 Set the “Minute” display to the current minute with  
the Tuning control.  
3 Press the M key.  
5 Press the F key.  
4 Set the “Minute” display to the time you want the  
transceiver to turn on with the Tuning control.  
Time Alarm Setting  
5 Press the F key.  
When you press the 0 key in clock setting mode, the  
“second” display is cleared, and counting begins  
from 0 seconds.  
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54  
Switch-off Timer Setting  
Timer Start/Stop  
If you press and hold the F key for longer than one  
second, then the 9 key, you enter the switch-off  
timer setting mode, and the TIMER.OFF indicator  
and the “Hour” display will flash.  
1
If you press the F key, then the 8 key, the switch-on  
timer starts or stops.  
When the switch-on timer starts, the TIMER.ON  
indicator lights on the LCD, and the transceiver is  
switched on at the set time every day.  
If you press the F key, then the 9 key, the switch-off  
timer starts or stops.  
When the switch-off timer starts, the TIMER.OFF  
indicator lights on the LCD, and the transceiver is  
switched off at the set time every day.  
Set the “Hour” display to the time you want the  
transceiver to turn off with the Tuning control.  
2
3 Press the M key.  
Set the “Minute” display to the time you want the  
transceiver to turn off with the Tuning control.  
4
Alarm Function  
5 Press the F key.  
If you press the M key twice in timer start setting  
mode, the alarm function setting mode turns on.  
Select “ A On ” using tuning control.  
An alarm sounds for 10 minutes when the switch-on  
timer set time is reached.  
The alarm stops when you press any front panel key.  
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DUPLEX OPERATION  
Normally this transceiver operats in a simplex mode,  
i.e. No receive audio from the sub-band is fed to the  
speaker during transmit on the main or active band.  
Press and hold the F key for longer than one second  
The DUP indicator will  
then press the DUAL key.  
flash.  
If you prefer duplex operation, i.e. Receive audio  
from sub-band is fed to the speaker during transmit  
you must perform the following procedure.  
Press the F key then press the DUAL key. The DUP  
indicator will appear on the display.  
In this mode, the microphone sensitivity and receive  
audio are reduced automatically to prevent howling.  
The transmitter output power is also automatically set  
to the EL position.  
You can select the desired transmitter output power  
by pressing the F key then the D/LOW key.  
To cancel this function, repeat the procedure for  
setting the function. The DUP indicator disappears  
from the display.  
Duplex operation is now possible.  
Occasionally the microphone might pick up receive  
audio, causing howling to occur. To prevent howling  
in the duplex mode, use an earphone (see page 50)  
to listen to the receive audio, or perform the following  
operation.  
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56  
POWER ON MESSAGE AND FUNCTION MESSAGE  
2 Function Message  
1
Power On Message  
When you select a function, the corresponding  
function message is displayed on the LCD for two  
seconds.  
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 your  
own message as follows:  
The message and functions are listed below.  
Changing Power-on Message  
Function  
Message  
AF CHG  
1
Select your message by following steps 1 to 4 of the  
memory write procedure on page 44.  
Transpose the two AF bands  
Initial AF output setting  
2 Press the 0 key.  
AF INI  
The power-on message has now been changed. If  
you switch the power off and on again, your own  
message will be displayed on the display for two  
seconds.  
AF MIX  
AF SEP  
AS OFF  
AS ON  
Mix the AF output from both bands  
Separate the AF output into two bands  
Automatic offsets OFF  
NOTE  
Automatic offsets ON  
j
The above message, which is stored in message  
memory channel 0, appears each time you switch  
the power on.  
BELL 1  
BELL 2  
BP OFF  
BP ON  
Tone alert (Telephone type ring)  
Tone alert (Tone alarm)  
Beep OFF  
Beep ON  
DTMF0S  
DTMF2S  
No DTMF signal transmission delay time  
Setting DTMF signal transmission delay time  
(two seconds)  
57  
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UHF band carrier operate scan mode  
UHF band time operate scan mode  
VFO reset  
UHF CO  
UHF TO  
VFOCLR  
VHF CO  
VHF TO  
250MS  
Earphone mode  
EAR  
MSG M1  
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  
MSG MX  
VHF-band carrier operate scan mode  
VHF band time operate scan mode  
Message transmission memory clear  
Signal squelch ON  
MSGCLR  
OPG OFF  
OPG ON  
PROGSCN  
PROGVFO  
SHIFT  
The delay time for DTMF code transmission  
is 250 mS  
The delay time for code transmission is 450  
mS  
450MS  
Canceling signal squelch  
Programmable scan range setting and recall  
Programmable VFO tuning limit setting  
Shift width setting mode  
SP  
External speaker mode  
SPLIT  
Split memory channel mode  
58  
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MAINTENANCE  
1 General Information  
n
Include a full description of any problems. Include  
your telephone number.  
Your transceiver has been factory aligned and tested  
to specification before shipment. Under normal  
circumstances the transceiver will operate in  
accordance with these instruction manuals.  
You need not return accessory items unless they are  
directly related to the service problem.  
Service note  
All adjustable trimmers and coils in your transceiver  
has been adjusted at the factory and should only be  
readjusted by a qualified technician with proper test  
equipment. Attempting service or alignment without  
factory authorization can void the transceiver’s  
warranty.  
If corresponding on a technical or operational  
problem, please make your note short, complete,  
to the point, and legible. Give sufficient detail for  
diagnosis of the problem. For example, list the  
test equipment you have available to you, any  
meter readings you might have taken, and any  
other information you feel might be useful.  
When operated properly, the transceiver will provide  
many years of service without requiring realignment.  
The information in this section gives some general  
service procedures which can be accomplished  
without sophisticated test equipment.  
3 Record Keeping  
n
Record the date of purchase, the unit serial number,  
and the name of the dealer from whom you  
purchased the unit.  
2 Service  
If it ever becomes necessary to return the  
transceiver to your dealer or service center for  
repair:  
l
Retain a written record of any service or  
maintenance performed on the unit.  
Photocopy the bill of sale or other proof of purchase  
showing the sale date. This information must be  
included with the transceiver when claiming warranty  
service.  
n
Pack the equipment in its original box and packing.  
Do not pack it in crushed news papers. Extensive  
damage could result during shipment.  
59  
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I
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.  
Corrective Action  
Probable Cause  
1. Low voltage.  
2. With optional DC cable:  
1) Bad power cable or  
connections.  
Symptom  
1. Recharge/ replace the battery.  
Indicators do not light and no  
receiver noise is heard when the  
POWER switch is turned on.  
2.  
1) Check cables and connections.  
2) Check for the cause of the  
2) Blown power supply fuse.  
blown fuse and replace the fuse.  
1. Turn the SQL control  
1. Squelch is closed.  
2. With the TSU-7: CTCSS is  
operating.  
No sound from the speaker.  
No signal can be received.  
counterclockwise.  
2. Press the F key, then press the 3  
key to turn off the CTCSS.  
3. Press the F key, then press the 2  
key to turn off the DTSS.  
4. Press the F key, then press the 1  
key to turn off the Paging.  
3. DTSS is operating.  
4. Paging is operating.  
1. Press the F key, then press the M  
1. LOCK is ON.  
2. T.ALT is ON.  
No control works.  
key.  
2. Press the F key, then press the 5  
key.  
See Using the Memory (page 19)  
Nothing is stored in the memory  
channel.  
Memory channel cannot be  
recalled.  
1. Recharge the battery.  
2. Install the Battery case.  
1. Battery voltage is low.  
2. Battery case removed.  
Memory cannot be backed up.  
60  
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ACCESSORIES  
Note: Some optional accessories may not be available in your area.  
SPEAKER MICROPHONE  
Optional unit  
TSU-7  
Battery charger  
SMC-31  
SMC-32  
SMC-33  
SMC-34  
(CTCSS unit)  
(Wall charger)  
HEADSET with  
VOX/PTT  
HMC-2  
ME-1  
BC-15A  
(Memory expansion unit)  
CLIP MICROPHONE with  
EAR PHONE  
EMC-l  
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1 Installing the CTCSS Unit (TSU-7)  
6
Remove the jumper wire (J301) using a pair of  
nippers.  
Slide the release button to unlock, then pull out  
the battery case.  
1
7 Attach the TSU-7 to the transceiver, as shown in  
fig.4.  
Unscrew the four screws on the rear (Fig. 1). The  
screw near the antenna connector is a short one.  
2
8 Replace the case in its original position, taking  
care not to pinch any wires or cables under the  
case.  
3 Put your finger into the battery holder, and release  
the claw of the rear case. (Fig. 2)  
4 Position the set with its front facing forward.  
9 Install the four screws.  
5 Open the front panel from the PTT switch side,  
being careful of the internal wiring and water  
resistance rubber attached LEDs. (Fig. 3)  
Fig. 4  
Fig. 1  
63  
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2 Memory Expansion Unit (ME-l)  
1
Slide the release button to unlock, then pull out  
the battery case.  
2
3
Unscrew the four screws on the rear (Fig. 1). The  
screw near the antenna connector is a short one.  
Put your finger into the battery holder, and release  
the claw of the rear case. (Fig. 2)  
4 Position the set with its front facing forward.  
Fig. 1  
Fig. 2  
5 Open the front panel from the PTT switch side,  
being careful of the internal wiring and water  
resistance rubber attached LEDs. (Fig. 3)  
6 Attach the ME-l to the transceiver, as shown in  
fig.4.  
7 Replace the case in its original position, taking  
care not to pinch any wires or cables under the  
case.  
8 Install the four screws.  
Fig. 4  
Fig. 3  
64  
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To reset the function of the transceiver keys.  
3 Programming the SMC-33 Remote  
Control Speaker Microphone  
1
Connect the SMC-33 to the MIC jack on top of the  
transceiver.  
CALL  
2 Press and hold Microphone key 1 (or 2 or 3) and  
turn the power on. The programmable function  
(PF) indicator appears for 10 seconds.  
switch  
Earphone jack  
3
Press a key on the transceiver - or press F and a  
key - to assign that key’s function to key 1 (or 2 or  
3) on the SMC-33. The possible functions for the  
SMC-33 keys 1, 2, and 3 are listed on the next  
page.  
LOCK switch  
For example, press the BAND key on the  
transceiver to make key 1 on the SMC-33 function  
as the BAND key. Press the F key, then the  
BAND key to make key 1 function as the A.B.C.  
key.  
Turn the LOCK switch on to disable microphone  
keys 1, 2, and 3.  
You can use the SMC-33 with models that have  
no remote function for simple transmit and receive  
function. No remote functions will be possible.  
Make sure the LOCK switch on the back of the  
microphone is on before using it with such models.  
These keys function just like the VFO, MR, and  
CALL keys on the front panel of the transceiver.  
65  
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Memory Control Functions  
Press the F key, then the  
key below.  
Press the F key, then the  
Press the key below.  
Press the key below.  
key below.  
1 : Memory channel recall 1  
2 : Memory channel recall 2  
3 : Memory channel recall 3  
4 : Memory channel recall 4  
5 : Memory channel recall 5  
6 : Memory channel recall 6  
7 : Memory channel recall 7  
8 : Memory channel recall 8  
9 : Memory channel recall 9  
0 : Memory channel recall 0  
(M) VFO mode/MR mode  
f²  
Paging function on/off  
DTSS function on/off  
CTCSS function on/off  
Alert function on/off  
Tone alert function on/off  
Speaker mode selection  
Clock function on/off  
On timer on/off  
Tuning control (II)  
Encoder/Volume selecting mode  
LAMP  
LAMP  
(Turns off 5 seconds after the  
last key operation)  
(Does not turn off automatically)  
MONI  
TONE  
MHz  
VFO  
TX output power selection  
Memory shift  
V/M scan  
Off timer on/off  
MR  
Lock out function on/off  
Key lock function on/off  
TX. Stop function on/off  
Duplex operation on/off  
Reverse function on/off  
V/M/C scan  
CALL  
MESSAGE  
BAND  
Message function on/off  
A.B.C.  
DUAL  
SHIFT  
Clockwise rotation sets the UP function, counterclockwise  
rotation sets the DOWN function.  
66  
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4 Using Other Microphone  
If not using the SMC-33, we recommend using an  
electret type microphone. The input impedance is  
2k ohms and the DC voltage on the microphone  
terminal is approximately 4 volts (Max. 3.5 mA).  
Do not use a dynamic microphone.  
Speaker  
67  
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SPECIFICATIONS  
4 4 0/ 4 30MHz  
band  
61.4 x 149.5 x 42mm  
14 4 MHz  
band  
DIMENSION ( Projection Included )  
WEIGHT (Transceiver only)  
MICROPHONE INPEDANCE  
GENERAL  
270g  
U.S.A. Version  
TRANSMITTER  
FREQUENCY  
RANGE (MHz)  
more than 5W  
Approx. 2W  
144 to 146  
144 to 148  
430 to 440  
430 to 440  
U.K.and Europe  
Other market  
OUTPUT  
H (7.5VDC)  
POWER  
L
Approx. 0.5W  
or 438 to 450  
E L  
Approx. 20mW Approx. 10mW  
Reactance  
F3E (FM)  
I
I
ANTENNA IMPEDANCE  
MAX. FREQUENCY DEVIATION  
SPURIOUS RADIATION  
OPERATING TEMPERATURE  
less than -6OdB  
POWER  
REQUIREMENTS BATTERY PACK  
RECEIVER  
double conversion  
superheterodyne  
Approx.  
1.4A  
0.5A  
Approx.  
1.5A  
0.6A  
CURRENT DRAIN  
Transmit mode(13.8VDC)  
Transmit mode(13.8VDC)  
Transmit mode(13.8VDC)  
SIMPLEX  
CIRCUITRY  
H
L
EL  
45.05MHz  
58.525MHz  
less than  
INTERMEDIATE FREQUENCY 1 ST IF  
120mA  
150mA  
455 kHz  
INTERMEDIATE FREQUENCY  
2
ND IF  
less than  
60mA  
10mA  
65mA  
12mA  
Receive mode with no signal  
SENSITIVITY (12dB SINAD)  
SIMPLEX  
DUPLEX  
Battery Save mode  
110mA  
20mA  
110mA  
20mA  
Receive mode with no signal  
Battery Save mode  
SQUELCH SENSITIVITY  
SELECTIVITY - 6dB  
SELECTIVITY - 60B  
DUPLEX  
more than 12kHz  
less than 28kHz  
More than 200 mW  
AUDIO OUTPUT POWER  
(10 % distortion)  
GROUND  
49.5 X 134 X 41 m m  
1. Circuit and ratings are subject to change without notice,  
due to development in technology.  
NOTES:  
2. Recommended duty cycle : 1 minute Transmission,  
3 minutes Reception  
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68  
QUICK REFERENCE  
Note :  
The plus symbol (+) means press two keys simultaneously.  
“(1 second)” means press the key for longer than one (1) second.  
“then” means press two keys in sequence.  
TO DO THIS  
PRESS  
TO DO THIS  
PRESS  
Temporarily change the volume or frequency  
of the band that cannot control  
Activate Band scan  
E.CHG  
VFO (1 second)  
MR (1 second)  
CALL (1 second)  
F then E.CHG  
F then LAMP  
F then VFO  
Activate Memory channel scan  
Activate CALL scan  
DetermIne if a frequency is in use before  
transmitting  
MONI  
Select volume or encoder mode  
The LCD illumination lamp lights at all times  
Memory shift  
The LCD illumination lamp lights  
Change the frequency in 1 MHz step  
VFO mode  
LAMP  
MHz  
VFO  
MR  
Activate VFO/Memory scan  
Activate VFO/Memory/Call scan  
Turn message function on or off  
F then MR  
Memory channel recall mode  
Activate call channel function  
Recall the received message  
Exchange Main and Sub band contents  
Activate all function (blue letters)  
Memory data entering mode  
Activate tone encoder  
F then CALL  
F then MSG  
CALL  
MSG  
BAND  
F
Turn automatic band change function on or  
off  
F then BAND  
Activate PAGING mode  
Activate DTSS function  
Activate CTCSS function  
Activate alert function  
IAktivate tone alert function  
F then 1  
F then 2  
F then 3  
F then 4  
F then 5  
M
TONE  
DUAL  
Exchange dual band reception or single band  
reception  
Select desired transmitter offset direction  
SHIFT  
69  
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TO DO THIS  
PRESS  
Switching speaker output when a external  
Message memory recall  
F (1 second)  
then MSG  
Turn CLOCK function on or off  
F then 7  
F then 8  
Activate paging code selection mode  
Activate DTSS code selection mode  
Activate frequency step selection mode  
F (1 second)  
then 1  
Turn switch on timerfunction on or off  
Turn switch off timerfunction on or off  
Activate memory channel lock out function  
Turn KEY LOCK function on or off  
Turn TX STOP function on or off  
Select transmit output power level  
Activate duplex operation  
F (1 second)  
then 2  
F then 9  
F then 0  
F (1 second)  
then 3  
F then M  
F then f2  
Recall lower limit frequency of programmable  
band scan  
F (1 second)  
then 4  
F then TONE  
F then DUAL  
F then SHIFT  
Recall upper limit frequency of programmable  
band scan  
F (1 second)  
then 5  
Change the speaker output when a external  
speaker is connected  
F (1 second)  
then 6  
Turn reverse function on or off  
Return the encoder to the original setting  
mode  
F (1 second)  
then E.CHG  
Activate Time setting function  
Switch-on timer setting mode  
Switch-off timer setting mode  
Select tone frequency  
F (1 second)  
then 7  
Recalling stored DTMF cords  
F (1 second)  
then MHz  
F (1 second)  
then 8  
Turn automatic power off function on or off  
Turn battery saver function on or off  
Signaling squelch function on or off  
F (1 second)  
then VFO  
F (1 second)  
then 9  
F (1 second)  
then MR  
F (1 second)  
then TONE  
F (1 second)  
then CALL  
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A
TO DO THIS  
PRESS  
PRESS  
TO DO THIS  
t Answer-Back on or off  
Enter a data into the call channel  
Message memory buffer clear  
M then CALL  
MHz +  
POWER  
1 +  
POWER  
Delay time selection  
Enter displayed data in lower limit frequency  
of programmable VFO tuning limit  
2 +  
DTMF delay time selection  
POWER  
Enter displayed data in upper limit frequency  
of programmable VFO tuning limit  
M (1 second)  
then 2  
t
t
Channelized frequency display on or off  
Turn earphone mode on or off  
Selecting a beep sound  
3 +  
POWER  
-
-
Enter displayed frequency in lower limit  
frequency of programmable band scan  
M (1 second)  
then 4  
4 +  
POWER  
Enter displayed frequency in upper limit  
frequency of programmable band scan  
M (1 second)  
then 5  
t-  
5 +  
POWER  
Select encoder mode  
E.CHG +  
POWER  
Turn beep function on or off  
Battery save time selection  
Hold/Resume selection(VHF band)  
Hold/Resume selection(UHF band)  
6 +  
POWER  
Select 2 or 3 digit memory channel recall  
using numeric key pad  
MR+  
POWER  
7 +  
POWER  
Turn automatic shift function on or off  
BAND+  
POWER  
8 f  
POWER  
Reset VFO  
F +  
POWER  
9 +  
POWER  
Reset memory  
Turn the message memory function on or off  
POWER  
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