Kenwood TK-780-H, TK-780 Service Manual

VHF FM TRANSCEIVER

TK-780/H

SERVICE MANUAL

SUPPLEMENT

This service manual applied to products with 30200001 or subsequent serial numbers.
In terms of the products with the serial numbers earier than 30200001, refer to the TK-780/H
service manual as per part No. B51-8461-10.

Microphone
(T91-0621-05)

Cabinet (Top)
(A01-2165-13)

© 2001-5 PRINTED IN JAPAN
B51-8581-00 (N) 1370

CONTENTS

GENERAL ................................................................. 2

OPERATING FEATURES ......................................... 3

REALIGNMENT...................................................... 15

INSTALLATION...................................................... 20

CIRCUIT DESCRIPTION......................................... 28

SEMICONDUCTOR DATA ..................................... 33

DESCRIPTION OF COMPONENTS ....................... 35

PARTS LIST ............................................................ 37

EXPLODED VIEW .................................................. 47

PACKING ................................................................ 48

ADJUSTMENT ....................................................... 49

Key top
(K29-5284-02)

PC BOARD VIEWS

PLL/VCO (X58-4540-11) : K2,HK2 .................... 57

PLL/VCO (X58-4712-70) : K,HK ........................ 58

TX-RX UNIT (X57-6480-XX) (A/2) ................... 59

TX-RX UNIT (X57-6480-XX) (B/2).................... 65

SCHEMATIC DIAGRAM ........................................ 69

BLOCK DIAGRAM.................................................. 77

LEVEL DIAGRAM................................................... 80

TERMINAL FUNCTION ......................................... 82

SPECIFICATIONS................................................... 83

Panel assy
(A62-0991-03)

TK-780/H

GENERAL

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced techni­cians familiar with similar types of commercial grade com­munications equipment. It contains all required service infor­mation for the equipment and is current as of this publica­tion date. Changes which may occur after publication are
covered by either Service Bulletins or Manual Revisions,
which are issued as required.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment informa­tion, the full part identification number should be included.
This applies to all parts : components, kits, and chassis. If
the part number is not known, include the chassis or kit
number of which it is a part and a sufficient description of
the required component, for proper identification.

PERSONNEL SAFETY

The following precautions are recommended for person­nel safety :

• DO NOT transmit if someone is within two feet (0.6

meter) of the antenna.

• DO NOT transmit until all RF connectors are secure and

any open connectors are properly terminated.

• SHUT OFF this equipment when near electrical blasting

caps or while in an explosive atmosphere.

• All equipment should be properly grounded before

power-up for safe operation.

• This equipment should be serviced by only qualified tech-

nicians.

PRE-INSTALLATION CONSIDERNATIONS

1. UNPACKING

Unpack the radio from its shipping container and check
for accessory items. If any item is missing, please contact
KENWOOD immediately.

2. LICENSING REQUIREMENTS

Federal regulations require a station license for each ra­dio installation (mobile or base) be obtained by the equip­ment owner. The licensee is responsible for ensuring trans­mitter power, frequency, and deviation are within the limits
permitted by the station license.

Transmitter adjustments may be performed only by a li­censed technician holding an FCC first, second or general
class commercial radiotelephone operator’s license. There
is no license required to install or operate the radio.

3. PRE-INSTALLATION CHECKOUT
3-1. Introduction

Each radio is adjusted and tested before shipment. How­ever, it is recommended that receiver and transmitter opera­tion be checked for proper operation before installation.

3-2. Testing

The radio should be tested complete with all cabling and
accessories as they will be connected in the final installa­tion. Transmitter frequency, deviation, and power output
should be checked, as should receiver sensitivity, squelch
operation, and audio output. QT equipment operation
should be verified.

4. PLANNING THE INSTALLATION
4-1. General

Inspect the vehicle and determine how and where the
radio antenna and accessories will be mounted.

Plan cable runs for protection against pinching or crush­ing wiring, and radio installation to prevent overheating.

4-2. Antenna

The favored location for an antenna is in the center of a
large, flat conductive area, usually at the roof center. The
trunk lid is preferred, bond the trunk lid and vehicle chassis
using ground straps to ensure the lid is at chassis ground.

4-3. Radio

The universal mount bracket allows the radio to be
mounted in a variety of ways. Be sure the mounting surface
is adequate to support the radio’s weight. Allow sufficient
space around the radio for air cooling. Position the radio
close enough to the vehicle operator to permit easy access
to the controls when driving.

4-4. DC Power and wiring

1. This radio may be installed in negative ground electrical

systems only. Reverse polarity will cause the cable fuse

to blow. Check the vehicle ground polarity before installa-

tion to prevent wasted time and effort.

2. You must connect the positive power lead directly to

the positive terminal of the vehicle battery. Never

connect the lead to any other positive power source,

such as a cigarette lighter jack or fuse terminals.

CAUTION

If DC power is to be controlled by the vehicle ignition
switch, a switching relay should be used to switch the posi­tive power lead. The vehicle ignition switch then controls
DC to the relay coil.

3. You must also connect the ground lead directly to

the negative terminal of the vehicle battery.

4. The cable provided with the radio is sufficient to handle

the maximum radio current demand. If the cable must be

extended, be sure the additional wire is sufficient for the

current to be carried and length of the added lead.

2

GENERAL / OPERATING FEATURES

TK-780/H

5. INSTALLATION PLANNING – CONTROL STATIONS
5-1. Antenna system

Control station. The antenna system selection depends
on many factors and is beyond the scope of this manual.
Your KENWOOD dealer can help you select an antenna sys­tem that will best serve your particular needs.

5-2. Radio location

Select a convenient location for your control station radio
which is as close as practical to the antenna cable entry
point. Secondly, use your system’s power supply (which
supplies the voltage and current required for your system).
Make sure sufficient air can flow around the radio and power
supply to allow adequate cooling.

SERVICE

This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and align­ment procedures contained in this manual.

Note

When you modify your radio as described in system set­up, take the following precaution.

The rating of pin 7 (SB) of the accessory connector cable
(KCT-19) on the rear of the radio is 13.6V (1A). Insert a 1A
fuse if you use the SB pin for external equipment.

Accessory connector
cable (KCT-19)

1

7

13

15

3

6

+
–

1. Operation Features

The TK-780/780H is a VHF FM radio designed to operate
in both trunking format (LTR model) and conventional for­mat (Conventional model). The programmable features are
summarized.

Model Trunking format Trunking mode

Conventional format Conventional mode

1-1. Trunking Format

This format can handle up to 32 systems with up to 250
groups in each system. The transceiver can be used in both
trunked mode and conventional mode. Systems, groups,
and their functions are programmed.

1-2. Conventional Format

This format can handle up to 250 groups with 250 chan­nels in each group. The transceiver can be used only in con­ventional mode. Groups, channels, and their functions are
programmed.

2. Transceiver Controls and Indicators (Fig. 1)

2-1. Front Panel Controls

All the keys on the front panel are momentary-type push
buttons. The functions of these keys are explained below.

• POWER key

Transceiver POWER key. When the power is switched
off, all the parameters, such as the system and group in
trunking format, and the group and channel in conventional
format, are stored in memory. When the power is switched
on again, the transceiver returns to the previous conditions.

• SYSTEM UP/DOWN key

(Trunking format, programmable)

If you do not intend to use the 3.5-mm jack for the exter­nal speaker, fit the supplied speaker-jack cap (B09-0235-05)
to stop dust and sand getting in.

Speaker-jack cap
(B09-0235-05)

• GROUP UP/DOWN key
(Conventional format, programmable)

• SCAN key (Programmable)

• MONITOR key (Programmable)

• A, B, C and D key (Programmable)

• VOLUME UP/DOWN key (Programmable)

• BUSY/TX LED

The BUSY indicator (Green LED) shows that the channel

is in use. The TX indicator (Red LED) shows that you are
transmitting.

3

TK-780/H

OPERATING FEATURES

2-2. Programmable Keys

The FPU (KPG-49D) enables programmable keys to se-

lect the following functions.

■ Conventional format

AUX-A, AUX-B (Only when voice scrambler is not se­lected), Channel down, Channel up, DTMF ID (BOT), DTMF
ID (EOT), Display character, Emergency (Only foot key),
Function, Group down, Group up, Home channel, Horn alert,
Key lock, Memory (RCL/STO), Memory (RCL), Memory
(STO), Monitor A, Monitor B, Monitor C, Monitor D, Opera­tor selectable tone, Public address, Redial, Scan, Scan del/
add, Scrambler (Only when voice scrambler is selected),
Talk around, Volume down, Volume up and None.

■ Trunking format

Auto tel, AUX-A, AUX-B (Only when voice scrambler is
not selected), DTMF ID (BOT), DTMF ID (EOT), Display char­acter, Emergency (Only foot key), Function, Group down,
Group up, Home group, Horn alert, Key lock, Memory (RCL/
STO), Memory (RCL), Memory (STO), Monitor A, Monitor B,
Monitor C, Monitor D, Public address, Redial, Scan, Scan
del/add, Scan temporary delete, Scrambler (Only when
voice scrambler is selected), System down, System up, TEL
disconnect, Volume down, Volume up and None.

These functions the FPU programs to the function keys
and described in the following sections.

• Auto TEL (Trunking format)

Automatically connects available repeaters that are con­nected to telephone circuits when operating as LTR system.
The time allocated to search for available repeaters is 60
seconds, after which connection failure occurs, a DTMF
tone is output and the function terminates.

If connection to an available circuit is made, only ID 253,
EOT or hang-up time-out can terminate the function.

• DTMF ID (BOT)

In conventional mode, if you press this key, a predeter-

mined DTMF ID (Begin of TX) will be sent automatically.

• DTMF ID (EOT)

In conventional mode, if you press this key, a predeter-

mined DTMF ID (End of TX) will be sent automatically.

• Display character

This key switches the LCD display between the system
and group number in trunking format and the group and
channel name in conventional format.

• Emergency

Pressing this key for longer than the programmed “Emer­gency Key Delay Time” causes the transceiver to enter the
emergency mode. The transceiver jumps to the pro­grammed “Emergency system and group in trunking format
and the group and channel in conventional format” and
transmits for the programmed “Active Time”.

The transceiver disables mic mute while transmitting.
After finishing transmission, the transceiver receivers for
the programmed “Interval Time”. The transceiver mutes
the speaker while receiving. Following the above sequence,
the transceiver continues to transmit and receive.

• Function

Pressing this key causes the transceiver to display
“FCN”. Then, pressing a microphone DTMF key causes the
corresponding programmed function to start. This key may
be convenient when using many functions with the micro­phone 12-key keypad.

• Group up/down

When the key is pressed each time, the group number to
be selected is incremented/decremented and repeats if held
for one second or longer.

• AUX-A

If this key is pressed, “AUX” icon lights on the LCD and
AUX port which is inside of the transceiver turns to the high
level. If pressed again, the “AUX” icon goes off and the
AUX ports turns to the lower level.

• AUX-B

This function can be programmed when the voice scram­bler board is not installed.

If this key is pressed, an underscore (“_”) appears at the
extreme right of the LCD and AUX port which is inside of the
transceiver turns to the active level. If pressed again, the
underscore disappears and the AUX ports turns to the
deactive level.

• Channel up/down (Conventional format)

When the key is pressed each time, the channel number
to be selected is incremented/decremented and repeats if
held for one second or longer. This key works as the voice
scrambler code selector in the voice scrambler code select
mode.

4

• Home channel (Conventional format)

Press this key once, the channel switches to the pre-pro-

grammed home channel.

• Home group (Trunking format)

Each pressing of the key selects a preset system/group.

• Horn alert

If you are called from the base station using 2-tone/DTMF
while you are away from your transceiver, you will be
alerted by the vehicle horn or some other type of external
alert. To turn the horn alert function on , press this key. A
confirmation tone sounds, and the display shows “HA” on
the sub LCD.

If this key is pressed again, the horn alert function is
turned off.

• Key lock

Pressing this key causes the transceiver to accept entry
of only the [Function], [Key lock], [PTT], [Monitor A], [Moni­tor B], [Monitor C], [Monitor D], and [Emergency] keys.

OPERATING FEATURES

TK-780/H

• Message mode

Press this key to enter the message mode. (See “Alpha-

numeric Two-way Paging Function” for details)

• Memory

This key allows DTMF memory data to be recalled; up to
32 memories each with a memory dial of up to 16 digits and
an A/N of up to 10 digits per memory.

• Monitor

Used to release signalling or squelch when operating as a
conventional. It is also used to reset option signalling.

• Operator selectable tone (Conventional format)

This key switches the pre-set decode QT/DQT and en­code QT/DQT to OST (Operator Selectable Tone) tone pair.

Press this key, the transceiver enters to OST select
mode. In this mode, the display shows “OFF” and the op­erator can select one of the OST tone pair using the group
up/down key. The display shows “TONE
pair No.

Press OST key again, the transceiver exits from the OST
select mode, and returns to the group/channel mode with
the handset indicator (
that the OST tone pair is selected. OST tone pair number or
OFF can be memorized for each channel.

16 kinds of tone pair for OST can be programmed by
KPG-49D. OST is useful to access the repeater with same
radio frequency and different tone (QT/DQT).

is selected.

**

). The handset indicator ( ) means

**

” and tone

• Scan del/add

1) Trunking format

Used to select whether system scan routines are used
during system scan. Each pressing of the key (to ON)
toggles between lockout and lock. The scan routine is
started when on lock. The DEL indicator flashes when the
system is on lockout.

2) Conventional format

This key switches the currently displayed channel be­tween “Delete” and “Add”.

The “Add” channel contained in the scan sequence, and
“Delete” channel is not contained. In the scan mode, this
key switches the channnel delete or add temporarily.

• Scan temporary delete (Trunking format)

This key is temporarily deleted a system being scanned.
If you press this key when scan is stopped (when a call is
being received from another station), the system is tempo­rarily deleted and scanning restarts.

This key operates even when “Scan Type” is set to “List
Type System Scan”.

• Scrambler

If a scrambler code (1 to 16) has been set in the FPU, an
underscore (“_”) appears at the extreme right of the LCD
display when scrambler is active. Pressing this key changes
on/off of scramble operation. Press this key for 2 seconds
to enter scrambler code selection mode.

• Public address

Public address amplifies the microphone audio, and out­puts it through a PA speaker. PA is activated by pressing
this key. A confirmation tone sounds, and the display shows
“PUBLIC ADRS”. PA can be activated at anytime (scanning
or non-scanning).

The RADIO continues to scan & receive calls while in PA
mode. Pressing PTT activates PA, and will override an in­coming call at anytime; however, no RADIO transmission
takes place.

If this key is pressed again, a confirmation tone will
sound, the display will return to the normal channel or SCAN
display, and the PA function will turn off.

• Redial

If you press this key when the system/group (Trunking
format) or group/channel (Conventional format) is displayed,
the last transmitted DTMF code will appear on the display.
Pressing the PTT switch at this time will transmit the dis­played DTMF code.

• Scan

Press this key starts scanning. Pressing this key stops
scanning.

• Send GPS (Optional)

Pressing this key causes the transceiver to send a single

GPS data. (GPS receiver must be installed.)

• System up/down (Trunking format)

When the key is pressed each time, the system number
to be selected is incremented/decremented and repeats if
held for one second or longer.

• Talk around (Conventional format)

Press this key, the transceiver uses the receive fre­quency and the tone for transmission.

The operator can call the other party directory (without
repeater). Press this key again, the talk around function
goes off.

• Telephone disconnect (Trunking format)

Pressing this key ends an RIC connection (disconnects
the telephone line).

• Volume up/down

When the key is pressed, the volume level is increased/
decreased and repeats if held for 200ms or longer.

• None

Sounds error operation beep, and no action will occur.
Use this function when the transceiver is required to be
more simple operated.

5

TK-780/H

OPERATING FEATURES

2-3. Front Panel Displays and Indicators

1

Sub display

Displays the system, channel and group numbers. Also

displays various functions, such as TA.

2

P (Priority) indicator

The P indicator ( ) appears when a selected channel is

programmed as priority, in conventional operation.

3

MON (Monitor) indicator

The MON indicator appears when the button pro-

grammed as MONITOR is pressed.

4

SVC (Service) indictor

This icon is not used this transceiver.

5

SCN (Scan) indicator

The SCN indicator appears when using scan mode.

6

AUX (Auxiliary) indicator

appears when the auxiliary function is activated (ON) by

pressing the AUX-A key.

BUSY/

TX LED

POWER

VOLUME

VOLUME

DOWN

UP

2 3

1

7

Handset indicator

The handset indicator ( ) appears when the selected

group is programmed as telephone IDs (Trunking format).

In conventional format, the handset indicator (

when the OST tone pair is selected.

8

MAIL indicator

Flashes when a status message (FleetSync™) is re-

ceived. Lights when a status message is stored in the stack
memory.

9

Alphanumeric display

The twelve-character dot matrix alphanumeric display

shows the system/group numbers. You can program sys­tem/group names with up to ten characters in place of these
numbers. The left display is used as a delete indicator (
and the right is used for the selective call (
(_) function. The delete indicator shows the systems
locked out of the scanning sequence. Selective call and
scrambler are optional functions that can be programmed.

Dispalys received messages when using FleetSync™.

10

A,B,C,D key

These keys are programmable function (PF) keys.

4 5 6 7 8

) appears

) or scrambler

*

)

MODULAR

MIC JACK

MONITOR

10

9

3. Scan Operating

3-1. Trunking Format

■ System scan

System scan can be selected with the “Scan” key by pro­gramming the scan feature. When the “Scan” key is
pressed and the “SCN” mark appears, scan mode in en­tered. Scanning starts from the system following the cur­rently displayed system. When a call is received, scanning
stops, and the system and group are displayed.

When programming key is touched during scanning, the
scan stops and the revert system or group can be changed.
Scanning resumes one second after the key is released.

There are two types of system scan.

SYSTEM UP
(Trunking Format)
GROUP UP
(Conventional Format)

SYSTEM DOWN
(Trunking Format)
GROUP DOWN
(Conventional Format)

SCAN

Fig. 1

• Fix system scan

All the set systems except locked-out ones are scanned.
If the Del/Add feature is assigned to the programmable key,
it can be controlled from the front panel.

• List type system scan

A scan list can be set for each system.

The list to be scanned can be changed by changing the
display system.

If many systems have been set, the scan speed can be
increased by narrowing the systems to be scanned with
scan lists.

6

OPERATING FEATURES

TK-780/H

■ System lockout

The system lockout feature is used to lock systems out
of the scan sequence, and can be selected by programming
in the following two ways;

• Fixed lockout

The system to be locked out is selected by programming.
When a locked system is selected, the Delete (
appears on the left of the SYSTEM indicator. The revert sys­tem is scanned even if it is locked out. If there is a locked
system, the Delete (
ning.

) indicator flashes during fixed scan-

) indicator

• User selectable lockout

If the scan lockout feature is programmed to a key, the
user can lock systems out of the scan sequence with the
key. To lock a system out of the scan sequence, press the
key when the system is displayed. The Delete (
is displayed on the left of the SYSTEM indicator.

To unlock a system, select the system and press the key.
The Delete (
tem has returned to the scan sequence. The revert system
is scanned even if it is locked out. If there a locked system,
the Delete (
systems are locked out, the scan stops and only the revert
system is received.

) indicator disappears to indicate that the sys-

) indicator flashes during fixed scanning. If all

) indicator

■ Drop-out delay time (Scan resume time)

If a call is received during scan, the scan stops. The scan
resume time can be programmed as 0 to 300 seconds in
one-second increments. The default value is 3 seconds.

• Selected + Talkback revert

If the system/group was changed while scanning, the
newly selected system/group. The transceiver “talks back”
on the current receive group.

■ Scan massage wait

The time for staying with the home repeater that re­ceives a signal during system scan and monitoring data
messages can be programmed. If there is no signal from
the home repeater, the system is scanned for about 50ms.
If there is a signal, three data messages are monitored.
Normally, three data messages are monitored for each sys­tem, and it can be increased in multiples of three data mes­sages per line to up to eight lines.

If the repeater data message indicates that there is no
call, data monitoring is terminated and the home repeater of
the next system is scanned.

■ Group scan operation

Group scan can be programmed for each group. In addi­tion to the ID codes of the selected group, the ID codes of
the other groups that are permitted for group scan are de­coded. (The two fixed ID and block decode codes are al­ways decoded.)

If, during group scanning, a call is received with one of
the selectable group ID codes for which group scan is en­abled, the group display indicates the group number that the
call came in with. That group then becomes the new se­lected group. Group scan resumes after the specified drop­out delay time or dwell time shared by the system scan
elapses.

■ Dwell time

The dwell time is the time after transmission ends until
the scan resumes in scan mode. It can be set 0 to 300 sec­onds by programming. The default value is 3 seconds.

■ System/group revert

System/group revert can be programmed for one of the
following;

• Last called revert

The system or group changes to the revert system or
group when a call is received with the system or group be­ing scanned.

• Last used revert

If a system/group call is received during scanning and the
PTT button is pressed for transmission and response within
the drop out delay time, the system or group is assigned as
the new revert system or group.

• Selected revert

If the system/group was changed while scanning, the
newly selected system/group.

■ In conventional system

If QT or DQT is set for the channel, the channels, includ-

ing signalling, are scanned.

In case of the priority group is set in conventional sys­tem, if a group scan (including group scan during a system
scan) temporarily stops (receiving) in a group that does not
have priority, a look back is performed to the priority group.
Look back is performed according to the look back time A
and B settings. If a call is received on the priority group,
reception immediately switches to the priority group.

3-2. Conventional Format

■ Scan types

• Single group scan

You can scan all valid (ADD) channels in the displayed
group that can be selected with the group up/down key.

• Multiple group scan

You can scan all valid (ADD) channels in the all valid
(ADD) group.

7

TK-780/H

OPERATING FEATURES

■ SCAN start condition

One or more non-priority channels must be added to all
channels that can be scanned. The transceiver must be in
normal receive mode (PTT off).

When you activate the key programmed to the scan func­tion, the scan starts. The scan icon “SCN” lights and “–
SCAN–” or revert channel (programmable) is indicated on
alphanumeric display.

■ Scan stop condition

The scan stops temporarily if the following conditions are
satisfied.

1) A carrier is detected, then signalling matches on chan-

nels for which receive the signalling is set by the pro-

gramming software.

2) A carrier is detected on the channels for which receiving

signalling is not set by the programming software or

when the monitor (signalling cancel) function is activated.

■ Scan channel types

1) Priority channel is the most important channel for the

scan, and always detects a signal during scan and when

the scan stops temporarily.

2) Non-priority channels detects a signal during scan. For

the channels that can be selected with the group or chan-

nel up/down key when the scan does not occur, adds an

indicator “▼” lights.

2) Priority + talkback
The transceiver reverts to the priority channel.
If you press PTT during a resume timer (dropout delay
time, TX dwell time) or calling, you can transmit on cur­rent channel to answer to the call however revert channel
is set to priority channel.
After resume time, scan re-starts and transmission chan­nel is return to priority channel.

3) Selected channel
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.

4) Last called channel
The transceiver reverts to the last called channel during
the scan.

5) Last used channel
The transceiver reverts to the last used (transmitted)
channel during scan. “Last used” revert channel in­cludes talkback function.

6) Selected + talkback
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.

■ Scan end

When you reactivate the key programmed to the scan

function during scan mode, the scan ends.

The scan icon “SCN” and “–SCAN–” or revert channel

(programmable) display goes off.

■ Priority channel setting

A priority channel can be set as follows with the program-

ming software (KPG-49D).

1) Specify a priority channel as a fixed priority channel.

2) Make a selected channel, a priority channel.

■ Scan type according to the priority channel

1) When no priority channel is set : Only the non-priority
channels are scanned.
If a non-priority channel stops temporarily, it stops until
there is no signal on the channel.

2) When priority channel is set : Either priority channel is
scanned.
If a non-priority channel stops temporarily, a priority chan­nel signal is detected at certain intervals.
If a priority channel stops temporarily, it stops until there
is no signal on the priority channel.

■ Revert channel

The revert channel is used to transmit during scanning

and set by the programming software (KPG-49D).

1) Priority
The transceiver reverts to the priority channel.

■ Temporarily delete/add

It is possible to delete or add channel temporarily during
scan. When scan stops on unnecessary channel for ex­ample by interference of the other party, activate the delete/
add function (for example press the key), then that channel
is deleted temporarily and scan re-start immediately.

When you would like to add the deleted channel tempo­rarily to scan sequence, select the desired (deleted) channel
during scan, activate the delete/add function (for example
press the key) before scan re-start.

That channel is added temporarily to scan sequence. The
temporary deleted or added channels are returns to pre-set
delete/add, when the transceiver exits from scan mode.

4. Details of Features

4-1. Common Trunking format and Conventional Format

■ Time-out timer

The time-out timer can be programmed in 15 seconds
increments from 15 seconds to 10 minutes. If the transmit­ter is keyed continuously for longer than the programmed
time, the transmitter is disabled and a warning tone sounds
while the PTT button is held down. The alert tone stops
when the PTT button is released.

8

OPERATING FEATURES

0.5s 0.5s 0.5s 0.5s 0.5s

HOR

1s 0.5s 1s

TK-780/H

■ Sub LCD display

You can use 3-digit the display to display the system
number, channel number or group number. It is useful
when the main (12-digit) display indicates system, group or
channel name or other functions.

■ Selective call alert LED

You can select whether or not the LED on the transceiver
flashes in an orange color when selective call was occurred.

■ PTT ID

PTT ID provides a DTMF or MSK (FleetSync™ : Fleet-ID)
ANI to be sent with every time PTT (beginning of transmis­sion, end of transmission, or both).

You can program PTT ID for each group. You can pro­gram a PTT ID as “on” or “off” when “DTMF” is selected
for the PTT ID type. You can program a PTT ID as “own”,
“sel” or “off” when “MSK” is selected for the PTT ID type.
The contents of ID are programmed for each transceiver.

The timing that the transceiver sends ID is program­mable.

BOT : DTMF ID (BOT)/MSK ID is sent on beginning of

transmission.

EOT : DTMF ID (EOT)/MSK ID is sent on end of transmis-

sion.

Both : DTMF ID (BOT)/MSK ID is sent on beginning of

transmission and DTMF ID (EOT)/MSK ID is sent on end

of transmission.

■ Horn alert

In trunking format, horn alert can be set to on or off for
each group. If horn alert has been set to YES for a group and
DEC ID/QT/DQT matches, the horn alert, HOR. is turned on
and off. The group for which the optional signalling is set
works by ANDing the decode ID/QT/DQT with the optional
signalling.

In conventional format, if you are called from the base
station using 2-tone/DTMF while you are away from your
transceiver, you will be alerted by the vehicle horn or some
other type of external alert. To turn horn alert function on,
press the [Horn Alert] key.

Either continuous or non-continuous operation can be set
by the FPU. The horn alert port is enabled or disabled as
follows;

Off hook horn alert

Enable Yes Yes

Disable No Yes

Hook off Hook on

■ Pulse

The horn alert port, HOR, is turned on and off as follows;

■ Radio password

When the password is set in the transceiver, user can not

use the transceiver unless enter the correct password.

This code can be up to 6 digits from 0 to 9 and input with

the key, and "S" key.

■ Off hook decode

If the Off hook decode function has been enabled, re­moving and replacing the microphone on the hook has no
effect for decoding QT/DQT and option signalling.

■ Timed power off

This function works as “Automatic Power Switch Off”.

Timed power off timer starts from the ignition-off. After
the timer expires, the radio will automatically turn off. The
timer will be reset if the ignition is turned on and off.

This function requires ignition-sense. Connect the igni­tion-line to the 9-pin connector which is located at the rear of
the radio.

After the timer expires, press the power switch to turn
on the radio.

The timing when the fixed LTR ID matches is as follows

(trunking format);

■ Continuous

Horn alert can be reset by setting an expiration time from

the FPU, pressing the AUX-A key, or setting off hook.

■ Data TX with QT/DQT

Whether programmed QT/DQT is modulated or not with
a data transmission except for Selcall. A radio unit can re­ceive a data message regardless of QT/DQT if the receiving
unit is not scanning.

9

TK-780/H

OPERATING FEATURES

4-2. Trunking Format

■ Call indicator

The call indicator can be programmed for each group. In
trunked system, it can be set to respond to a selectable de­code ID or one of two fixed IDs, except block IDs. When a
call is received with a selectable decode ID, the call indicator
flashes. When a call is received with a fixed ID, the call
indicator lights continuously.

On a conventional system, the call indicator can be pro­grammed to light for each QT or DQT code. It keeps flash­ing while a call is being received. It is turned off by pressing
any front panel key.

■ Free system ringback

This feature is available only when a telephone intercon­nected ID code is selected. If a busy tone sounds when the
PTT button is pressed, the transceiver enters this mode au­tomatically.

When the PTT button is released, a beep sounds for
400ms to indicate that the mode has been entered. If the
scan is on, it is resumed (the "SCN" mark goes on). When
any repeater becomes available, a ringing tone sounds and
this mode ends.

The mode is terminated when the system, group, scan,
PTT, key is changed.

■ System search

This feature can be programmed to automatically access
other programmed systems when the selected system can­not be accessed. If an intercept tone sounds when the PTT
button is pressed after setting the mode, the transceiver
has entered the mode.

If the group ID is a telephone interconnect ID, the trans­ceiver then attempts to access, in succession, other sys­tems that have a telephone interconnect ID in the revert
group location. If the group ID is a dispatch ID, the trans­ceiver attempts to access other systems that have a dis­patch ID programmed in the revert group location.

If there is no system to be accessed, an intercept tone
sounds, the mode is terminated, and the transceiver returns
to the first system. If the access is successful, the mode is
terminated, and the searched system becomes the new se­lected system (If during scanning, the scan stops).

■ Transpond

This feature can be programmed to turn on and off for
each group. If the ID of the group for which transpond is
enabled is received, two data messages (transmit ID and
turn-off code) are automatically transmitted if the PTT but­ton is not pressed as a response within the time set (0 to
300 seconds in 1-second increments). If the PTT button is
pressed within the time, the transpond is not preformed.

■ Transmit inhibit

The transceiver can be programmed with a transmit in­hibit block of ID codes. If an ID code within this block is
decoded the preset time before the PTT button is pressed,
transmission is inhibited. The BUSY indicator lights and a
busy tone sounds until the PTT button is released to indicate
that transmission is not possible (except clear-to talk mode).

Transmission with the group for which the encode ID is
not set is inhibited, and the busy tone is output while the
PTT button is held down, regardless of the clear-to talk set­ting.

■ Auto TEL

A telephone interconnect call can be made by simply
pressing the key by assigning this feature to the key. This
feature accesses the TEL channel of the available system
automatically.

When the key is pressed, a queue tone is output, and the
“AUTO TEL” appears on the alphanumeric display along
with a flashing handset indicator (
mode has been entered. If the TEL ID is set for the revert
system, the TEL channel of that system is accessed. If all
TEL channels are busy, an attempt is made to access the
TEL channels of another system in which the TEL ID code
has been programmed. It is repeated for 60 seconds until
the access succeeds. If the access succeeds, a dial tone
returns from the repeater. If the key is pressed again when
the queue tone is sounding, this mode is canceled.

If the access fails after 60 seconds, a deny tone is output
and this mode is terminated. When the talk ends, the revert
system/group returns. When the scan mode is effective,
the scan resumes. The Auto TEL feature can be pro­grammed to turn on or off for each system.

) to indicate that this

■ ARQ mode

It affects Trunking mode only. Automatic Repeat
reQuest (ARQ) mode is a manner to minimize the air traffic
of data communication. Also, it enables to occupy the
trunking repeater channel fot the data communication pe­riod.

4-3. Conventional Format

■ “TOT” pre-alert

The transceiver has “TOT” pre-alert timer. This param­eter selects the time at which the transceiver generates
“TOT” pre-alert tone before “TOT” is expired.

“TOT” will be expired when the selected time passes
from a TOT pre-alert tone.

■ “TOT” re-key time

The transceiver has “TOT” re-key timer. This timer is the
time you can not transmit after “TOT” exceeded. After
“TOT” re-key time expired you can transmit again.

10

OPERATING FEATURES

TK-780/H

■ “TOT” reset time

The transceiver has “TOT” reset timer. This timer is the
minimum wait time allowed during a transmission that will
reset the “TOT” count.

“TOT” reset time causes the “TOT” to continue even
after PTT is released unless the “TOT” reset timer has ex­pired.

■ OST (Operator Selectable Tone)

The transceiver is capable to have “OST” function and 16
tone pair (QT/DQT) with max 10-digit name for each tone
pair.

■ “OST” back up

The transceiver is programmable the selected “OST”
code is memorized or not. If you set to Disable (no memo­rized), the “OST” function always starts at “off”.

■ Direct “OST”

It is possible to call “OST” number directory using key­pad. In this case, keypad is used for “OST”, then auto
“PTT” store and send functions by keypad are not usable.

■ Clear to transpond

The transceiver waits the transpond of 2-tone /DTMF if
channel is busy until channel open. This feature prevents
the interference to other party.

5. Option Signalling

5-1. DTMF/2-Tone

Built-in DTMF decoder is available for option signalling.

Built-in 2-tone decoder is available for option signalling.

It is possible to use individual call, group call, D.B.D.
(Dead Beat Disable). D.B.D. is used with DTMF only.

If the option signalling matches, a predetermined action
will occur.

If option signalling matches on a group/channel which is
set up with option signalling, the option signalling indicator

) will flash and option signalling will be released. The

(

*

transpond or alert tone will sound.

If the selective call alert LED is set up, the orange LED
will flash.

While option signalling matches (or if option signalling is
deactivated when you are transmitting), you can mute or
unmute ID/QT/DQT/Carrier.

■ AND/OR

You can select AND or OR for option signalling match
conditions.

Alert/Transpond

AND QT/DQT/ID+DTMF (2-tone); Option matches = Action

OR QT/DQT/ID+DTMF (2-tone); Option matches = Action

AF mute open

AND QT/DQT/ID+DTMF (2-tone); Option matches = Action

OR QT/DQT/ID; Signalling only matches = Action

With OR set up, alert/transpond will not function with

only DTMF (Trunking format).

With OR set up, AF mute will not release when only

DTMF matches.

With a conventional channel not set up with QT or DQT,

only the carrier is considered when signalling matches.

■ Auto Reset

If option signalling matches a group set up with option
signalling, option signalling is released. After matching op­tion signalling, option signalling will temporarily reset auto­matically.

■ Dead Beat Disable

If the D.B.D. code matches, a predetermined action will
occur. Whether option signalling is activated or not, when
D.B.D. matches on any channel, the transceiver will become
TX inhibited or TX/RX inhibited. While D.B.D. is active, if the
D.B.D. code + “#” code is received, D.B.D. will disactivate.

When D.B.D. matches, transpond will function. Alert will
not be output, and option signalling match icon will not ap­pear.

5-2. MSK

Built-in MSK (FleetSync™ : Fleet-ID) decoder is available
for option signalling. When the group ID/Carrier matches,
squelch remains muted while the station waits for reception
of proper MSK signal. When MSK signal matches, squelch
unmutes.

■ AND/OR

AND : QT/DQT/ID + MSK to unmute. MSK matches =
alert tone

OR : QT/DQT/ID to unmute. MSK matches = alert tone

6.

Alphanumeric Two-way Paging Function

(FleetSync™)

■ General

The Alphanumeric Two-way Paging Function
(FleetSync™) is a KENWOOD proprietary protocol. It en­ables a variety of paging functions.

■ ID Construction

A radio unit ID is defined by a combination of 3-digit Fleet
and 4-digit ID numbers. Each radio unit must be assigned its
own Fleet and ID numbers.

■ PTT ID

A pre-programmed unique ID (own) can be sent at the
beginning of transmission and/or the end of transmission to
identify which radio unit is on air.

When selecting (sel) for MSK ID, the radio calls the spe­cific Fleet user the same as selective call.

11

TK-780/H

OPERATING FEATURES

■ Selective Call (SELCALL)

This is a voice call to a particular individual or group of

stations.

• Example of call types;

[100][ALL ] : <Group Call>
All the units whose fleet number is “100” are called.
[100][1000] : <Individual Call>
The unit, whose the fleet number is “100” and ID num­ber is “1000”, is called.
[ALL][ALL ] : <Broadcast Call>
All the units are called.
[ALL][1000] : <Supervisor Call>
All ID “1000” are called regardless of their fleet number.

• Unit ID encode block

Encode ID Block can be set to limit manual dial ID. The
radio unit will not accept an ID other than these IDs which
are entered from the keypad. If Inter-fleet Call is enabled,
block ID setting affects each fleet group.

■ Status Message

Using a 2-digit number, you can send and receive a Sta­tus message which may be decided in your talk group. Each
Status may be displayed with 16 alphanumeric characters if
programmed in the radio. A maximum of 9 received mes­sages can be stored in the stack memory, and it can be re­viewed after reception. If the message memory becomes
full, the oldest one will be erased. The stack memory will be
cleared by turning radio power off.

• Status 80~99 (Special)

Status numbers from 80 to 99 are reserved for special
purposes. Entering these statuses from the DTMF keypad
can be inhibited.

Please notice that the following status numbers are used
for special purposes;

80~87 : Reserved for future use.
88 : Terminates to emergency mode.
89 : Request for horn alert.
90 : Remote stun on. Disable the received radio unit’s
TX.
91 : Remote stun on. Disable the received radio unit’s
TX/RX.
92 : Cancel remote stun. Enable the received radio unit’s
TX/RX.
93 : Acknowledgement status sent when the radio unit is
in stun mode (TX disabled).
94 : Acknowledgement status sent when the radio unit is
in stun mode (TX/RX disabled).
95~97 : Reserved for future use.
98 : Man down emergency status (For portable).
99 : Emergency status.

Note : Remote stun works with DTMF D.B.D. function also.

12

• Automatic status response

If you pre-select a status number and leave the radio in
the Status Mode, it can automatically respond with the se­lected status number upon request from the base station.
(The request function is initiated by serial control on the
base station (Optional).)

■ Short Messase (Optional)

A maximum of 48 characters can be sent (External equip­ment is required). Received Short Messages will be dis­played in the same manner as a Status Message. A maxi­mum of 4 received messages can be stored in the stack
memory. In the Stack Mode, 3-digit LCD indicates the re­ceived Short Message as “M01”~”M04".

■ Long Message (Optional)

A maximum of 1024 characters can be sent (External
equipment is required). Received Long Message will not be
displayed or stacked in the radio memory but is output
through the COM (Data) port.

■ Emergency Function

Emergency status 99 will be sent at the beginning of
each emergency transmission.

• Emergency status response

Either “Horn” or “Alert” can be selected for the called
radio unit’s response to reception of status 99 which is used
as an emergency status.

■ Other Functions

• Manual dial

Fleet, ID and Status numbers can be entered from DTMF
keypad. (DTMF microphopne is required.)

• FleetSync™ baud rate

MSK data baud rate setting. The same rate must be set
as a communication partner.

1200bps :

Data communication is made in 1200bps. The communi-

cation area is much wider than 2400bps. Recommended

for repeater operation.

2400bps :

Data communication is made in 2400bps. The communi-

cation area is narrower than 1200bps, but it will decrease

the data traffic. Data rate 2400bps may not work prop-

erly depending on the repeater’s characteristic.

• Message mode timer

Message Mode Timer is a delay timer returning from
message/stack mode to Normal mode.

• Status/short/long message on data group/channel

Status/Short/Long Message transmission is made
whether on the Data System/Group in trunking format and
on the Data Group/Channel in conventional format.

OPERATING FEATURES

TK-780/H

• Status/short/unit ID message serial output
(Option)

Whether a received Status/Short message or PTT ID is

output or not from serial port.

• Caller ID display

PTT ID is displayed on LCD.

• Call alert (Continuous)

The radio can provide the alert tone repeatedly until next

operation.

• PTT ID sidetone

This function allows a single beep sound after the PTT ID

(MSK) for FleetSync™ signalling is encoded.

• Caller ID stack

The radio stores the last 3 received caller IDs to volatile

memory.

■ GPS Report (Optional)

ANMEA-0183 GPS unit must be installed.

• GPS report mode

GPS data can be sent automatically or upon request.

Manually sending GPS data works regardless of this setting.

Auto : GPS data is sent both automatically and by re­quest. GPS Auto TX Interval and GPS Time Mark must be
adjusted if required.
Poll : GPS data is sent upon request from dispatcher.

• GPS report interval

Interval time between automatic GPS data transmis-

sions.

• GPS time mark (Per mobile)

The amount of time from the 0 (zero) minute of the stan-

dardized GPS UTC time to starting the first transmission of
GPS data. It must be set to a different value for each radio
unit to avoid a transmission crash.

• Send GPS

Pressing this key causes the transceiver to send a single

GPS data.

• GPS report on data group/channel

GPS data transmission is made on the Data System/

Group in trunking format and on the Data Group/Channel in
conventional format.

1) MAP HEADER NMEA1 ($GPGGA), NMEA2 ($GPGLL),
NMEA3 ($GPRMC)
NMEA-0183 standard command. This should be set ac­cording to your PC application.

2) MAP HEADER KW1 ($PKLDS)
This is a Kenwood original sentence which consists of
“$GPGLL + Fleet + ID + Status”. This item should be set
according to your PC application.

3) MAP HEADER KW2 ($PKLID)
This is a Kenwood original sentence which consists of
“Fleet + ID”. This should be set according to your PC
application.

■ Parameters

• GTC count

Number of Go To data Channel messages to be sent be-

fore transmitting a data message if it is being made on Data
System/ Group. If a radio unit receives a GTC message, it
will move to the Data System/Group of the current system.
Increase this item to make sure the called radio unit moves
to the Data System/Group in trunking format and the Data
Group/Channel in conventional format.

• Random access (Contention)

When a channel (or all the repeater channels for Trunking

mode) is busy, radio unit will not transmit (depending on its
Busy Channel Lockout setting in conventional mode). As
soon as a channel is cleared, some transmissions may
crash. Random access is used to avoid this by employing a
random transmission sequence.

• Number of retries

Number of Retries is the maximum number of retry

transmission when no acknowledgement is received in the
Maximum ACK Wait Time. Increase this item to improve
data communication reliability.

• TX busy wait time

TX Busy Wait Time is the maximum amount of time be-

fore giving up the data transmission when the channel (or all
the repeater channels for Trunking mode) is busy. Also, this
timer affects if it expires during Random Access period.

• Maximum ACK wait time

Maximum ACK Wait Time is the maximum amount of

time to wait for an acknowledgement from the called radio
unit. It is used as an interval time of retries. It must be set
greater than the ACK Delay Time of the called radio unit.

• Received GPS data output

Any selected sentence can be output through the radio

serial port (COM1 or COM0).

13

TK-780/H

OPERATING FEATURES

• ACK delay time

ACK Delay Time is the amount of time from the end of
receiving a data to the beginning of sending an
acknowledgement. It should be adjusted as the repeater’s
hang-up delay time. Also, it must be set less than the Maxi­mum ACK Wait Time of the calling radio unit.

• TX delay time (RX capture)

TX Delay Time is the amount of unmodulated transmis­sion to let the called unit stop scanning or exit its battery
save mode. It is used only when starting a data communica­tion sequence.

• Data TX modulation delay time

Data TX Modulation Delay Time is the amount of time
from the beginning of transmission to the beginning of a
data modulation. It is used every time data is transmitted.
It must be set to more than 300ms if data communication is
made in Trunking Mode.

7. Audible User Feedback Tones

The transceiver outputs various combinations of tones to
notify the user of the transceiver operating state. The main
tones are listed below.

The high tone is 1477Hz, the mid tone is 941Hz, and the
low tone is 770Hz.

■ Power On Tone

This tone is output when the transceiver is turned on.
(The high tone is output for 500ms.)

■ Alert Tone

This tone is output when the transceiver is TX inhibition
for TOT, battery warning and PLL unlocked. It is output until
the PTT button is released.

■ DBD On Tone

When a D.B.D. code is received, transpond tone sounds.

■ Group Call Tone

Sounds when a group call with the correct DTMF/2-tone
option signalling is received, repeats 7 times. You can se­lect yes or no for the optional feature’s warning tone.

■ Individual Call Tone

Sounds when an individual call with the correct DTMF/2­tone option signalling is received. You can select yes or no
for the optional feature’s warning tone.

■ Key Press Tone [A]

Sounds when a key is pressed. For toggle keys, sounds
when toggle function is turned on (key press tone [B]
sounds when it is turned off). You can select yes or no for
the optional feature’s control tone.

■ Key Press Tone [B]

Sounds when a key is pressed. For toggle keys, sounds
when the toggle function is turned off (key press tone [A]
sounds when it is turned on). You can select yes or no for
the optional feature’s control tone.

■ Key Press Tone [C]

Sounds when a key is pressed. Also sounds when stor­ing data, adding a DTMF code to memory, and when chang­ing test mode settings. You can select yes or no for the
optional feature’s control tone.

■ Key Input Error Tone

Sounds when a key is pressed but that key cannot be
used. You can select yes or no for the optional feature’s
warning tone.

■ Roll Over Tone

Sounds in Trunking format at the smallest system/group.
Sounds in Conventional format at the smallest group/chan­nel. You can select yes or no for the optional feature’s con­trol tone.

■ DBD Off Tone

When a D.B.D. release code is received, transpond tone

sounds.

■ Password Agreement Tone

When the correct password is entered, the tone sounds.

The optional feature’s control tone can be set to yes or no.

■ PTT Release Tone

When you release the PTT switch, the PTT release tone

sounds.

■ Busy Tone

Sounds in LTR mode, when you cannot use a repeater
(system busy or TX inhibit). Sounds in conventional mode,
when busy channel lockout is functioning. You can select
yes or no for the optional feature’s warning tone.

14

■ Transpond Tone

Sounds when an individual call with the correct LTR/
DTMF/2-tone option signalling is received. For group calls,
only the group tone will sound, not the transpond tone.

■ Intercept Tone (Trunking Format)

This tone indicates that the transceiver is out of range. It
indicates that the PTT button is pressed, and transmission
has started, but the repeater cannot be connected and talk­ing is not possible. It is output until the PTT button is re­leased. (The mid tone and low tone are output alternately in
200ms intervals.)

User mode

Panel test mode

PC mode

Firmware program­ming mode

Panel tuning mode

Data program­ming mode

PC test mode

PC tuning mode

Self programming mode
(Conventional format)

Clone mode

OPERATING FEATURES / REALIGNMENT

TK-780/H

■ Delay Tone (Trunking Format)

This tone is output when the PTT button is pressed and
the repeater is accessed three times or more to indicate
connection with the repeater is delayed. This tone is the
same as the busy tone. (It is not output of clear to talk has
been set to yes.)

■ Proceed Tone (Trunking Format)

This tone is output when the PTT button is pressed,
transmission starts, and the repeater is connected to indi­cate that the user can talk if the clear to talk function has
been set. (The high tone is output for 100ms.)

■ Queue Tone (Trunking Format)

This tone is output until the auto TEL function is set and
the TEL channel is accepted successfully. (The mid tone on
for 50ms, off for 50ms, and on for 50ms in 1 second inter­vals.)

■ Deny Tone (Trunking Format)

This tone is output if the auto TEL function is set, the
queue tone is output, but the TEL channel cannot be ac­cessed within 60 seconds. It is similar to the intercept tone.
(The mid tone and low tone are output alternately in 150ms
intervals.)

■ Free System Ringback Mode Tone, System

Search Mode Tone (Trunking Format)

This tone indicates that the transceiver is free system
ringback mode or system search mode. (The mid tone is
output for 400ms.)

■ Ringing Tone (Trunking Format)

This tone indicates that the transceiver can use the re­peater in free system ringback mode. (The mid tone and no
tone are output eight cycles alternately in 50ms intervals.)

■ System Search Tone (Trunking Mode)

Sounds when the system changes during system search.
You can select yes or no for the optional feature's warning
tone.

■ System Search End Tone (Trunking Mode)

Sounds when a possible connection to a repeater in sys­tem search is not mode. You can select yes or no for the
optional feature’s warning tone.

■ Pre Alert Tone (Conventional Format)

Sounds prior to the TOT TX inhibit activation. If TOT pre
alert is set, the tone sounds at the amount of time pro­grammed, before the TOT expires (TOT time – TOT pre alert
time = Pre alert tone sounding time). You can select yes or
no for the optional feature’s warning tone.

1. Modes

Mode Function

User mode For normal use.

Panel test mode Used by the dealer to check the funda-

ment characteristics.

Panel tuning mode Used by the dealer to tune the radio.

PC mode Used for communication between the

radio and PC (IBM compatible).

Data programming Used to read and write frequency data

mode and other features to and from the radio.

PC test mode Used to check the radio using the PC.

This feature is included in the FPU.

See panel tuning.

Firmware program- Used when changing the main program

ming mode of the flash memory.

Clone mode Used to transfer programming data from

one radio to another.

Self programming Frequency, signalling and features write

mode (Conventional to the radio.

format)

2. How to Enter Each Mode

Mode Operation

User mode Power ON

Panel test mode [A]+Power ON (Two seconds)

PC mode Received commands from PC

Panel tuning mode [Panel test mode]+[SCN]

Firmware programming mode

Clone mode [C]+Power ON (Two seconds)

Self programming mode [D]+Power ON (Two seconds)

(Conventional format)

[SCN]+Power ON (Two seconds)

3. Panel Test Mode

Setting method refer to ADJUSTMENT.

4. Panel Tuning Mode

Setting method refer to ADJUSTMENT.

15

TK-780/H

REALIGNMENT

5. PC Mode

5-1. Preface

The TK-780/780H transceiver is programmed by using a

personal computer, programming interface (KPG-46) and
programming software (KPG-49D).

The programming software can be used with an IBM PC

or compatible. Figure 1 shows the setup of an IBM PC for
programming.

5-2. Connection Procedure

1. Connect the TK-780/780H to the personal computer with
the interface cable.

2. When the Power switch on, user mode can be entered
immediately. When PC sends command the radio enter
PC mode, and “PROGRAM” is displayed on the LCD.
When data transmitting from transceiver, the red LED is
blinking.
When data receiving to transceiver, the green LED is
blinking.

Notes :

• The data stored in the personal computer must match
model type, when it is written into the flash memory.

• Change the TK-780/780H to PC mode, then attach the
interface cable.

5-3. KPG-46 Description

(PC programming interface cable : Option)

The KPG-46 is required to interface the TK-780/780H to

the computer. It has a circuit in its D-subconnector (25-pin)
case that converts the RS-232C logic level to the TTL level.

The KPG-46 connects the modular microphone jack of

the TK-780/780H to the computers RS-232C serial port.

5-4. Programming Software Description

The KPG-49D programming disk is supplied in 3-1/2" disk

format. The software on this disk allows a user to program
TK-780/780H radio via programming interface cable (KPG-

46).

IBM-PC

KPG-46

5-5. Programming With IBM PC

If data is transferred to the transceiver from an IBM PC
with the KPG-49D, the destination data (basic radio informa­tion) for each set can be modified. Normally, it is not neces­sary to modify the destination data because their values are
determined automatically when the frequency range (fre­quency type) is set.

The values should be modified only if necessary.

Data can be programmed into the flash memory in RS­232C format via the modular microphone jack.

KPG-49D instruction manual parts No. : B62-1096-XX.

6. Firmware Programming Mode

6-1. Preface

Flash memory is mounted on the TK-780/780H. This al­lows the TK-780/780H to be upgraded when new features
are released in the future. (For details on how to obtain the
firmware, contact Customer Service.)

6-2. Connection Procedure

Connect the TK-780/780H to the personal computer (IBM
PC or compatible) with the interface cable (KPG-46). (Con­nection is the same as in the PC Mode.)

6-3. Programming

1. Start up the programming software (KPG-49D), select

“firmware program” in the “Program” item, and press

the Return key on the personal computer. This starts up

the firmware programmer.

2. The top screen is displayed. Press any key to advance to

the next screen.

3. Set the communications speed (normally, 57600 bps)

and communications port in the Setup item.

4. Set the firmware to be updated by File select (=F1).

5. Turn the TK-780/780H Power ON with the [SCN] switch

held down. Hold the switch down for two seconds until

the display changes to “PROG 57600”. When “PROG

57600” appears, release your finger from the switch.

6. Check the connection between the TK-780/780H and the

personal computer, and make sure that the TK-780/780H

is in the Program mode.

7. Press F10 on the personal computer. A window opens

on the display to indicate progress of writing. When the

TK-780/780H starts to receive data, the [P] icon is blink-

ing.

8. If writing ends successfully, the LED on the TK-780/780H

lights and the checksum is displayed.

9. If you want to continue programming other TK-780/780H,

repeat steps 5 to 8.

16

KPG-49D

TK-780/780H

Fig. 1

REALIGNMENT

TK-780/H

Notes :

• To start the Firmware Programmer from KPG-49D, the
FPRO path must be set up by KPG-49D setup.

• This mode cannot be entered if the Firmware program­ming mode is set to Disable in the Programming soft­ware (KPG-49D).

• When programming the firmware, it is recommend to
copy the data from the floppy disk to your hard disk be­fore update the radio firmware.
Directly copying from the floppy disk to the radio may not
work because the access speed is too slow.

6-4. Function

1. If you press the [MON] switch while “PROG 57600” is
displayed, the checksum is displayed. If you press the
[MON] switch again while the checksum is displayed,
“PROG 57600” is redisplayed.

2. If you press the [D] switch while “PROG 57600” is dis­played, the display changes to “PROG 19200” to indicate
that the write speed is low speed (19200 bps). If you
press the [D] switch again while “PROG 19200” is dis­played, the display changes to “PROG 38400”, and the
write speed becomes the middle speed (38400 bps). If
you press the [D] switch again while “PROG 38400” is
displayed, the display returns to “PROG 57600”.

Note :

Normally, write in the high-speed mode.

How to enter the password with the [System up/down]
key (Trunking format), the [Group up/down] key (Conven­tional format);
If the [System up/down] key (Trunking format), the
[Group up/down] key (Conventional format) is pressed
while “CLONE LOCK” is displayed, numbers (0 to 9) are
displayed flashing. When you press the [SCN] key, the
currently selected number is determined, and the display
shifts to the left. If you press the [SCN] key after entering
the password in this procedure, “CLONE MODE” is dis­played if the entered password is correct. If the pass­word is incorrect, “CLONE LOCK” is redisplayed.

4. Power on the slave TK-780/780H.

5. Connect the cloning cable (No. E30-3382-05) to the
modular microphone jacks on the master and slave.

6. Press the [S] key on the master while the master displays
“CLONE MODE”. The data of the master is sent to the
slave. While the slave is receiving the data, “PRO­GRAM” is displayed. When cloning of data is completed,
the mater displays “END”, and the slave automatically
operates in the User mode. The slave can then be oper­ated by the same program as the master.

7. The other slave can be continuously cloned. When the
[S] key on the master is pressed while the master dis­plays “END”, the master displays “CLONE MODE”.
Carry out the operation in step 4 to 6.

Note :

Only the same models can be cloned together.

7. Clone Mode

Programming data can be transferred from one radio to
another by connecting them via their modular microphone
jacks. The operation is as follows (the transmit radio is the
master and the receive radio is a slave).

1. Turn the master TK-780/780H power ON with the [C] key

held down. If the password is set to the TK-780/780H,

the TK-780/780H displays “CLONE LOCK”. If the pass-

word is not set, the TK-780/780H displays “CLONE

MODE”.

2. When “CLONE LOCK” is displayed, only the [System up/

down] key (Trunking format), the [Group up/down] key

(Conventional format) and [SCN], and [0] to [9] keys can

be accepted. When you enter the correct password, and

“CLONE MODE” is displayed, the TK-780/780H can be

used as the cloning master. The following describes how

to enter the password.

3. How to enter the password with the microphone keypad.

If you press a key while “CLONE LOCK” is displayed, the

number that was pressed is displayed on the TK-780/

780H. Each press of the key shifts the display in order to

the left. When you enter the password and press the

[SCN] key, “CLONE MODE” is displayed if the entered

password is correct. If the password is incorrect,

“CLONE LOCK” is redisplayed.

Cloning cable
(E30-3382-05)

Fig. 2

17

TK-780/H

Self programming

mode

[MON]

[MON]

Channel setting

mode

Channel selection Group selection

[B]

[D]

[D]

OFF QT

OFF

[D] [S]

[D]

DQT N

DQT I

[C]

[MON]

[MON]

[MON]

[MON]

[MON]

[MON]

[MON]

[MON]

[MON]

RX frequency

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

RX signalling

TX freuency

TX signalling

Scan delete/add

Busy channel

lockout yes/no

RF power high/low

Beat shift yes/no

Wide/Narrow

[D]

[D]

OFF

QT

OFF

[D] [S]

[D]

DQT N

DQT I

REALIGNMENT

8. Self Programming Mode

Write mode for frequency data and signalling etc. Mainly

used by the person maintaining the user equipment.

8-1. Enter to the Self Programming Mode

Delete R614 (SELF, Figure 3) in the TX-RX unit (B/2) and

turn the power switch on while pressing the [D] key. When
enter the self programming mode, “SELF PROG” is dis­played.

Note :

This mode (self programming mode) cannot be set when

it has been disabled with the FPU.

TX-RX unit (B/2)
Foil side

R614

The setup items fro channel setting mode are listed be-

low.

Setup function Display Remarks

(3 character)

Channel selection

RX frequency RXF [D] : Switches frequency on/off

RX signalling RXS [D] : Switches between off, QT,

TX frequency TXF Same as RX frequency

TX signalling TXS Same as RX signalling

Scan del/add SCN Delete/Add

Busy channel lockout

RF power PWR High/Low

Beat shift SFT Yes/No

Wide/Narrow W/N Wide/Narrow

CH or GRP

[A] : Changes the step value

between 2.5kHz, 5kHz, 6.25kHz,

7.5kHz, and 1MHz

and DQT.

[A] : Switches between 1 step

and standard

[SCN] : Switches between DQT

normal and invert

BSY Yes/No

IC511

IC512

9. Channel Setting Mode

Each channel can be setup in its action mode by using

the panel keys.

• Pressing [MON] while “SELF PROG” is displayed will
change to channel setting mode.

• Press [C] to select a setup item, then press [GRP up/
down] to change the selection.

• By pressing [B], the displayed information is stored in
memory, and the next item appears. By pressing [C], the
displayed information is not stored in memory, and the
next item appears.

• Press [MON] to return to the original display (“SELF
PROG”).

18

Fig. 3

9-1. Flow Chart

REALIGNMENT

Self programming mode

[D]

Function setting mode

[A] key function

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B]/[C]

[B] key function

[C] key function

[D] key function

[SCN] key function

[MON] key function

[FOOT] key function

[Grp Up] key function

[Grp Down] key function

[Vol Up] key function

[Vol Down] key function

T.O.T on/off

Beep on/off

Off hook decode enable/disable

Off hook scan enable/disable

Off hook horn alert enable/disable

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

[D]

TK-780/H

10. Function Setting Mode

All channels can be set up together in the action mode by

using the panel keys.

• Pressing [D] while “SELF PROG” is displayed will change
to function setting mode.

• Press [C] to select a setup item, then press [GRP up/
down] to change selection.

• By pressing [B], the displayed information is stored in
memory and the next item appears. By pressing [C], the
displayed information is not stored and the next item ap­pears.

• Press [D] to return to the original display (“SELF PROG”).
The setup items for function setting mode are listed be­low.

Setup function Display Remarks

[A] A Various key functions

[B] B Various key functions

[C] C Various key functions

[D] D Various key functions

[SCN] SCN Various key functions

[MON] MON Various key functions

[FOOT] FSW Various key functions

[Grp Up] UP Various key functions

[Grp Down] DN Various key functions

[Vol Up] V UP Various key functions

[Vol Down] V DN Various key functions

T.O.T TOT All TOT settings are turned on

Beep BEP All beep settings are turned on

Off hook decode H_D Enable/Disable

Off hook scan H_S Enable/Disable

Off hook horn alert

(3 character)

or off.

On : TOT [60s]/Pre-alert [10s]/

Rekey time [5s]/Reset time [5s]

Off : TOT [600s]/Pre-alert [Off]/

Rekey time [Off]/Reset time [Off]

or off.

On : Power on tone [On]/Control

tone [On]/Warning tone [On]

Off : Power on tone [Off]/Control

tone [Off]/Warning tone [Off]

H_H Enable/Disable

10-1. Flow Chart

11. Memory Reset Mode

You can clear all settings you made in self programming

mode, or you can return to the original display.

• Press [SCN] while “SELF PROG” is displayed will change
the display to “CLEAR NO?”.

• Press [GRP up/down] to change the display between
“CLEAR NO?” and “CLEAR YES?”.

• When “CLEAR YES?” is displayed, pressing [SCN] will
set all data to default, and “ALL CLEAR” will appear on
the display. Press [SCN] again to display “SELF PROG”.

• When “CLEAR NO?” is displayed, pressing [SCN] will
cancel the reset, and “SELF PROG” will be displayed.

19

TK-780/H

INSTALLATION

1. Accessory Connection Cable (KCT-19 : Option)

The KCT-19 is an accessory connection cable for con-

necting external equipment. The connector has 15 pins and
the necessary signal lines are selected for use.

1-1. Installing the KCT-19 in the transceiver

1. Remove the upper and lower halves of the transceiver
case, and lift the DC cord bushing (

2. Remove the pad as shown in Figure 1 (

3. Insert the KCT-19 cable (
The wire harness band (

3

) into the chassis ( 4 ).

5

) must be inside the chassis.

4. Replace the DC cord bushing (

5. Connect the KCT-19 to the TX-RX unit (A/2) as shown in
Figure 2 (

7

).

6. Connect the KCT-19 to the external accessory by insert­ing the crimp terminal (

8

) into the square plug ( 9 ),

both of which are supplied with the KCT-19.

1

2

Fig. 1

1

) from the chassis.

2

).

6

).

1-2. KCT-19 Accessory Port Function

No. (A)

No. (B,C,D,E)

1 D-2 AHK External hook input *1

2 D-5 ME Microphone ground *1

3 D-3 IGN Ignition sense input

4 D-1 DEO Receiver detector output

5 D-6 MI External microphone input *1

6 B-2 E Ground

7 B-3 SB Switched B+, DC 13.6V output.

8 D-7 PTT External PTT input, active low.

9 D-4 DI Data modulation input

10 B-1 HOR Horn alert/call output

11 D-8 SQ

12 C-1 SP Speaker audio output.

13 E-1

14 E-2

15 E-3

Name Function

BUSY System busy output

AM Speaker audio mute input

TXS Transmitter sense output

Maximum 0.75A

During DTC is low, it works as

DATA PTT.

Squelch detect output (Conventional)/

Logic squelch output (LTR).

CN2

LOK Link complete pulse output. *1

and *2

CN4

CN2

AM Speaker mute input.

CN4

RXD Serial control data input *2

CN2

MM MIC mute input, active high.

CN4

TXD Serial control data output. *2

CN2

DTC Data control channel signal input,

*1 Data channel : Low

LOK Link complete pulse output..

TXS Transmitter sense output,

Active high

FSW Foot switch input, active low

Note

20

Note

D

CN4

E

B

C

7

CN3

CN6

CN1

CN2

E

C

B

B

D

5

4

6

3

Crimp terminal
(E23-0613-05)

9

A

13
15

Square plug
(E09-1571-05)

1
3

Contact

12

*1 : The functions of A-1, A-2, A-5, A-13 (when connector E is con-

nected to CN2), and A-15 (when connector E is connected to
CN2) are changed as described in the jumper chart.

*2 : The functions of A-13, A-14 and A-15 are changed if the con-

nector E is connected to CN2 or CN4 of the radio.

No. CN2 CN4

E-1 LOK/AM LOK

E-2 MM RXD

E-3 LOK/DTC/TXS/FSW TXD

8

· Connect CN6 of the radio to connector C of the KCT-19 instead of
to the internal speaker connector, if use external speaker.

Fig. 2

R6

R5

R84

INSTALLATION

1-3. Data Equipment Connection

The jumpers must be set to either one for each function.

Otherwise, the radio will not work properly.

AHK/BUSY

R64 (0Ω) R18 (0Ω) Function

Yes No BUSY System busy output indicates if no

repeater channel is available in the

currently selected LTR system

when PTT is pressed, active low

: Default

No Yes AHK MIC hook input.

ME/AM

R12 (0Ω)

MI/TXS

R94 (0Ω) R24 (0Ω) Function

LOK/AM

R5 (0Ω) R6 (0Ω) Function

DTC/LOK/TXS/FSW

R168 R84 R51 R13 Function

(0Ω)(0Ω)(0Ω)(0Ω)

No No No Yes LOK Link complete pulse output.

Yes No No No DTC Data control channel signal input,

No No Yes No TXS Transmitter sense output,

No Yes No No FSW Foot switch input, active low

R167 (0Ω)

Yes No AM Speaker mute input, active high

: Default

No Yes ME MIC ground.

Yes No TXS Transmitter sense output, active

high : Default

No Yes MI Internal MIC input.

Yes No AM Audio mute signal input.

No Yes LOK

R13

R51

Link complete pulse output : Default

R12

R94

R167

R24

Function

Data channel : low (Default)

active high

R18

R168

R64

TX-RX unit (A/2)
Foil side view

TK-780/H

TX-RX unit (A/2)
Component side view

Note : The following parts are not installed at the time of

shipping; R5,R13,R18,R24,R51,R84,R167

2. Accessory Terminal

2-1. Terminal Function

Connector

CN1 1 DEO O Detect signal output. (Output level :

Pin Pin I/O Function

No. No. name

(DO) 250mVrms; standard modulation)

2 AHK I External hook signal input.

(AH) “COM2” port must be select “AUX

HOOK/PTT” / “DATA PTT” function

in the KPG-49D.

On hook : L, Off hook : H

BUSY O System busy signal output for

trunking system. No vacant repeater

: L, Vacant repeater : H

RXD2 I Serial data input 2.

“COM2” port must be select

“REM” / “DATA” / “DATA+GPS”

function in the KPG-49D.

3

IGN (IG)

4 DI I External modulation signal input.

5 ME – MIC earth.

AM I Audio mute signal input.

6 MI I Internal MIC input.

TXS O Signal indicating whether the

7 PTT I External PTT signal input.

(PT) “COM2” port must be select

TXD2 O Serial data output 2.

I Ignition input for KCT-18.

transceiver is transmitting or not.

TX : H, Another : L

“AUX HOOK/PTT” / “DATA PTT”

function in the KPG-49D.

TX : L, Another : H

“COM2” port must be select

“REM” / “DATA” / “DATA+GPS”

function in the KPG-49D.

21