Kenwood TK-840 User manual

mTK-840
TK-940
TK-941
UHF FM TRANSCEIVER
800 MHz FM TRANSCEIVER
900 MHz FM TRANSCEIVER
INSTRUCTION MANUAL
EMETTEUR-RECEPTEURFM UHF
EMETTEUR-RECEPTEURFM 800 MHz
EMETTEUR-RECEPTEURFM 900 MHz
MODE D'EMPLOI
TRANSCEPTOR FM DE UHF
TRANSCEPTORFM DE 800 MHz
TRANSCEPTORFM DE 900 MHz
MANUAL DE INSTRUCCIONES
KENWOOD CORPORATION
@ 862-0459-10 (K)
12 11 10 09 08 07 06 05 04 03

ModelsCoveredByThisManual:
TK-840: UHF FMTransceiver (25 W)
TK-940: 800 MHz FMTransceiver (15W)
TK-941: 900 MHz FM Transceiver (15 W)
This manual identifies anddescribes differences between the above versions.
NoticeToTheUser:
IMPORTANT:
GOVERNMENT LA W PROHIBITS THE OPERA TION OF UNLICENSED RADIO
TRANSMITTERS WITHIN THE TERRITORIES UNDER GOVERNMENT CONTROL.
ILLEGAL OPERA TlON IS PUNISHABLE BY FINE OR IMPRISONMENT OR BOTH.
REFER SERVICE TO A QUALIFIED LICENSED OR CERTIFIED TECHNICIAN ONL Y.
One or more of the following statements may be applicable:
IFCC WARNING
This equipment generates or uses radio frequency energy. Changes or modifications to this
equipment may cause harmful interference unless the modifications are expressly approved in
the instruction manual. The user could lose the authority to operate this equipment if an
unauthorized change or modification is made.
INFORMATION TO THE DIGITAL DEVICE USER REQUIRED BY THE FCC
This equipment has been tested and found to comply with the limits for aClass B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in aresidential installation.
This equipment generates, uses and can generate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that the interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer for technical assistance.
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CONTENTS
THANKYOU! 1
SAFETY 1
UNPACKING AND CHECKING EQUIPMENT 2
Supplied Items 2
Diagram References ... 3
INSTALLATION AND CONNECTION 3
Installation Equipment. 4
Planningthe Installation. 4
Power Cable 5
Installing the Transceiver 5
Microphone ..5
CONTROLS AND FUNCTIONS 6
Front Panel 6
Rear Panel... 8
Microphone 8
TRUNKEDOPERATION 9
Receiving a Dispatch Call 9
Placing a Dispatch Call 9
Placing a Telephone Call 10
Receiving a Telephone Call 10
CONVENTIONAL OPERATION 11
Receiving 11
Transmitting ... 11
AUDIBLE USER FEEDBACK TONES 12
Busy Tone 12
Intercept Tone 12
Volume Level Tone 12
Proceed Tone 12
SYSTEM SCAN... ... 13
General 13
Scanning Trunked Systems 13
Scanning Conventional Systems 13
Scan Lockout 13
Scan Revert 13
GROUP SCAN ... 14
TIME-OUT TIMER 14
HORN ALERT 14

THANKYOU!
We are grateful you chose KENWOODfor your land mobile applications. We
believe this easy-to-use transceiver will provide dependable communications
to keep personnel operating at peak efficiency.
KENWOOD transceivers incorporate the latest in advanced technology. As a
result, we feel stronglythat you will be pleased with this product's quality and
features.
SAFETY
It is important that the operator is aware of and understands hazards
common to the operation of any transceiver.
WARNING!
.EXPLOSIVE ATMOSPHERES (GASES, DUST, FUMES, etc.)
Turn off and do not operate your transceiver while taking on fuel, or while parked in
gasoline service stations. 00 not carry spare fuel containers in the trunk of your vehicle if
your transceiver is mounted in the trunk area.
.INJURY FROM RADIO FREQUENCY TRANSMISSIONS
00 not operate your transceiver when anyone is touching the antenna, or when anyone is
standing within two to three feet of your antenna, to avoid the possibility of radio frequency
burns or related physical injury.
.DYNAMITE BLASTING CAPS
Dynamite blasting caps may explode by the operation of transceivers, if such operation
occurs within 500 feet of the blasting caps. Turn off and do not operate your transceiver
when in an area where blasting is in progress, or where "TURN OFF TWO-WA Y RADIO"
signs have been posted. If you are transporting blasting caps in your vehicle, make
certain they are carried in aclosed metal box having apadded interior. 00 not transmit
during the time that caps are being placed into or removed from this container.

UNPACKINGAND CHECKINGEQUIPMENT
Note: The following instructions are for use by your KENWOOD dealer, an authorized
KENWOOD service facility, or the factory.
Carefully unpack the transceiver. We recommend that you identify the items
listed in the table before discarding the packing material. Ifany damage has
occurred during shipment, file a claim with the carrier immediately.
.SuppliedItems
2
Diagram Item Part Number Qty.
Reference
-Transceiver -1
CD Microphone T91-0374-XX 1
@Microphone cable E30-2089-XX 1
G) Microphone hanger J19-1376-XX 1
@) Powercable assembly E30-2076-XX 1
@Spare fuse (10 A) F51-0016-XX 1
@Mic. hangerground cable E30-2036-XX 1
(]) Mounting bracket J29-0441-XX 1
@Speaker-jack cap B09-0235-XX 1
Mounting hardware
@Hex bolt N69-4010-XX 7
@Self-tapping screw (large) N46-5016-XX 4
@Self-tapping screw (small) N46-4016-XX 3
@Spring washer N16-0050-XX 4
@ Flatwasher N15-1050-XX 4
-Warranty card (U.S.A. only) -1
-Instruction manual B62-0459-XX 1

.DiagramReferences
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WARNING! INTERFERENCE WITH VEHICULAR ELECTRONICS
Electronic fuel injection systems, electronic anti-skid braking systems, and electronic cruise
control systems are typical of the types of electronic devices that may malfunction due to a
lack of protection from radio frequency energy that is present when transmitting. If the vehicle
contains such equipment, consult the dealer for the make of vehicle and enlist his aid in
determining if such electronic circuits will perform normally when the transceiver is
transmitting.
Note: The following instructions are for use by your KENWOOD dealer, an authorized
KENWOOD service facility, or the factory.
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3

.InstallationEquipment
CAUTION: Take care when drilling mounting holes to avoid damaging vehicle wiring or
parts. Always check to see how far the mounting screws will extend below the mounting
surface before installing.
The following tools are requiredfor installingthis transceiver:
.6 mm (1/4") or larger electric drill
.Drills and circle cutters (sizes listed below)
04.2 mm (5/32")
03.2 mm (1/8")
05 x 16self-tapping screws
04 x 16self-tapping screws
.PlanningtheInstallation
The accompanying illustration should help you in planning your
installation. Before starting, determine the best location for the
transceiver. The transceiver should be convenient for the user, protected
from water damage, easy to service, and out of the way of auto
mechanics and passengers.
~/
TK-940/941: N connector (male)
TK-840: PL-259connector
4

.PowerCable
The power cable consists of a fused red lead, a fused black lead, and a
2-pin power plug. To install the powercable, check for an existing hole
conveniently located inthe firewall through which the cable can be
passed. If no hole exists, drill the firewall and install a rubber grommet.
Starting with the plug end of the cable at the transceiver, run the two
power leads into the engine compartment from the passenger
compartment. Connect the red leadto the positive (+) battery terminal or
switched power source, and the black lead to the negative (-) battery
terminal. Always locatethe fuse as close to the battery as possible. Coil
up the surplus cable and secure it out of the way with the retaining strap
provided. Ensureenough slack is available in the cables so that the
transceiver can be removed for servicing with the powerapplied.
CAUTION: The transceiver operates in 12 volt negative ground systems only! Always
check the battery polarity and voltage of the vehicle before installing the transceiver.
.InstallingtheTransceiver
Mount the transceiver so that the controls are within easy reach of the
user. Use the mounting bracket as a template to locate the holes, then
drill the holes and mountthe transceiver. Leave sufficient room at the rear
of the transceiver for cable connections. Before attaching the transceiver
to the bracket, connectthe antenna connector and power plug to the
transceiver.
WARNING! For passenger safety, mount the transceiver securely so that it will not break
loose in the event of a collision. This is especially important in station wagons, vans and
similar type installations where a loose transceiver could be extremely dangerous to the
vehicle occupants.
.Microphone
Mount the microphone hanger so that the microphone is within easy reach
of the user. Neither the microphone nor microphone cable should
interfere with the safe operation ofthe vehicle. After mounting the
microphone hanger, connect the microphone plug to the microphone
connector on the front of the transceiver, then place the microphone on
the hanger.
5
~

CONTROLSANDFUNCTIONS
.FrontPanel
CD@ @ @ @@ @ @ @ @ CID
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@ G) @
Microphone
connector
CD POWERswitch
Pressto switch the power ON or OFF.
@ SYSTEM Up/Down switches
Pressingthe right SYSTEM switch increasesthe selected system number
by one. Pressingthe left SYSTEM switch decreases the system number
by one. Holding either switch down causesthe function to repeat.
CID GROUP Up/Down switches
Operate similar to the SYSTEM switches but selects the groups available
within a system. Changing the system numbercauses the Group Display
to indicate the revert group number (the group that was displayed when
the system was last selected).
@ VOLUME Up/Down switches
Pressingthe upper VOLUME switch increasesthe volume level by one
step. Pressingthe lower VOLUME switch decreases the volume level by
one step. Holding either switch down causes the function to repeat.
6

@AUX (Auxiliary) switch
Pressingthis switch toggles the programmable auxiliary function such as
Horn Alert, Manual Relay,etc. Contact your dealer for further details.
@ SCAN switch
Pressingthis switch toggles System Scan ON or OFF.
(J) Delete indicator
Appears when systems are locked out of the System Scan list. Blinks
while scanning if any systems are locked out.
@ TX indicator
Appears while the transceiver is inthe transmit state.
@ BUSY indicator
Appears when attempting to access a trunked system that is busy with no
available repeaters.
@ CALL indicator
This indicator shows if a call was received while youwere away from the
vehicle. It is programmed to appear when specific group IDs are received
(trunked systems) or when a call is received on a specific group that
opens the audio (conventionalsystems). The microphone hook-switch,
PTT, System, or Group keyswill reset the CALL indicator. Call indicator
reset by other keys is decided by dealer programming.
@ Scan indicator
Appears while inthe System Scan mode.
@ TA indicator
Appears when the Talk Around system/group is selected.
@ OPT indicator
Displays the status of Optional Signaling.
@ AUX (Auxiliary) indicator
Appears when the Manual Relay or Horn Alert function is activated (ON)
by pressingthe AUX switch.
@ Handset indicator
Appears when a group is selected that is programmed with telephone IDs.
@ Alphanumeric display
After the dealer's qualified servicetechnician programsthe transceiver,
the Alphanumeric Displayshows either system numbers and group
numbers for your specific network orthe names of systems and/or groups.
7