Kenwood USA 229900 800/900MHz Transceiver User Manual Manual

Kenwood USA Corporation 800/900MHz Transceiver Manual

Manual

09 08 07 06 05 04 03 02 01

INSTRUCTION MANUAL

VHF FM TRANSCEIVER/

UHF FM TRANSCEIVER

TK-280/ TK-380

800 MHz FM TRANSCEIVER/

900 MHz FM TRANSCEIVER

TK-480/ TK-481

THANK YOU

We are grateful you chose KENWOOD for your land

mobile radio 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 strongly that

you will be pleased with the quality and features of this

product.

MODELS COVERED BY THIS MANUAL

• TK-280: VHF FM Transceiver

• TK-380: UHF FM Transceiver

• TK-480: 800 MHz FM Transceiver

• TK-481: 900 MHz FM Transceiver

NOTICES TO THE USER

◆Government law prohibits the operation of unlicensed radio

transmitters within the territories under government control.

◆Illegal operation is punishable by fine and/or imprisonment.

◆Refer service to qualified technicians only.

SAFETY: It is important that the operator is aware of

and understands hazards common to the operation of

any transceiver.

EXPLOSIVE ATMOSPHERES (GASES, DUST, FUMES, etc.)

Turn off your transceiver while taking on fuel, or while parked in

gasoline service stations.

One or more of the following statements may be applicable:

FCC 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 a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against

harmful interference in a residential 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.

ATTENTION (U.S.A. Only):

The RBRC Recycle seal found on KENWOOD nickel-

cadmium (Ni-Cd) battery packs indicates KENWOOD’s

voluntary participation in an industry program to collect

and recycle Ni-Cd batteries after their operating life has

expired. The RBRC program is an alternative to

disposing Ni-Cd batteries with your regular refuse or in

municipal waste streams, which is illegal in some areas.

For information on Ni-Cd battery recycling in your area, call (toll free)

1-800-8-BATTERY (1-800-822-8837).

KENWOOD’s involvement in this program is part of our commitment to

preserve our environment and conserve our natural resources.

iii

CONTENTS

UNPACKING AND CHECKING EQUIPMENT................... 1

Supplied Accessories ...................................... 1

PREPARATION .................................................. 2

Installing/ Removing the Battery Pack ..................... 2

Installing the Antenna ..................................... 3

Installing the Belt Clip ..................................... 3

Installing the Cover over the Universal Connector ..... 4

Installing the (Optional KMC-25) Speaker/ Microphone ... 4

GETTING ACQUAINTED ........................................ 5

Display ...................................................... 7

PROGRAMMABLE AUXILIARY FUNCTIONS ................. 8

OPERATION OVERVIEW .......................................10

Trunking Format ...........................................10

Conventional Format (TK-280/ TK-380 Only) .......... 10

OPERATING BASICS ...........................................11

Switching Power ON/ OFF ................................11

Adjusting the Volume .....................................11

Selecting a System/ Group/ Channel ...................11

Time-out Timer (TOT) ....................................12

TRUNKED OPERATION (Trunking Format) ..................13

Placing a Dispatch Call ..................................13

Receiving a Dispatch Call ................................13

Placing a Telephone Call (Keypad Models Only) ......14

Receiving a Telephone Call (Keypad Models Only) ... 14

CONVENTIONAL OPERATION (Trunking Format) ...........15

Transmitting ...............................................15

Receiving ..................................................15

SYSTEM SCAN (Trunking Format) ...........................16

Scanning Trunked Systems ..............................16

Scanning Conventional Systems ........................16

Scan Lockout ..............................................17

Scan Revert ................................................17

GROUP SCAN (Trunking Format) ............................18

CONVENTIONAL OPERATION (Conventional Format) ..... 19

Transmitting ...............................................19

Receiving ..................................................19

SCAN (Conventional Format) ................................20

Priority Scan ...............................................20

2-TONE SIGNALLING (Conventional Format) ..............21

FleetSync™: ALPHANUMERIC 2-WAY PAGING FUNCTION ... 22

Key Functions .............................................22

Selcall (Selective Calling) ...............................23

Status Message ...........................................25

Optional Short Messages Feature ......................27

DTMF (DUAL TONE MULTI FREQUENCY) CALLS ..........28

Making a DTMF Call (Keypad Models Only) ........... 28

DTMF Signalling ..........................................30

DBD (Dead Beat Disable) ................................30

AUDIBLE USER FEEDBACK TONES ..........................31

UNPACKING AND CHECKING EQUIPMENT

Note: The following unpacking 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 following table before

discarding the packing material. If any items are missing

or have been damaged during shipment, file a claim with

the carrier immediately.

■Supplied Accessories

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Antenna Ni-Cd battery

pack

Belt

clip Screw

set

Universal

connector cap

PREPARATION

1Match the four grooves

of the battery pack with

the corresponding

guides on the back of

the transceiver.

2Slide the battery pack

along the back of the

transceiver until the

release latch on the

base of the transceiver

locks.

3To remove the battery

pack, pull back on the

release latch and slide

the pack away from the

transceiver.

■Installing/ Removing the Battery Pack

◆Do not recharge the battery pack if it is already fully charged.

Doing so may cause the life of the battery pack to shorten or

the battery pack may be damaged.

◆After recharging the battery pack, disconnect it from the

charger. If the charger power is reset (turned on after being

turned off), recharging will start again and the battery pack

will become overcharged.

◆Do not short the battery terminals or dispose of the battery

by fire.

◆Never attempt to remove the casing from the battery pack.

Screw the antenna into the

connector on the top of the

transceiver by holding the

antenna at its base and

turning it clockwise until

secure.

■Installing the Belt Clip

If necessary, attach the belt

clip using the two supplied

3 x 6 mm screws.

Note: If the belt clip is not

installed, its mounting location

may get hot during continuous

transmission or when left sitting

in a hot environment.

■Installing the Antenna

If you are not using the

optional KMC-25 speaker/

microphone, install the

cover over the univeral

connector using the

supplied 4 x 6 mm screw.

■Installing the Cover over the Universal Connector

■Installing the (Optional KMC-25) Speaker/ Microphone

1Insert the guide of the speaker/ microphone

connector into the groove of the universal

connector.

2Secure the connector in place using the attached

screw.

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GETTING ACQUAINTED

Note: The transceiver is also available without the DTMF keypad (!1).

qAntenna connector

Connect an antenna here.

wRotary encoder

Rotate this encoder to activate its programmable

function. (System or Group Up/ Down in Trunking

Format, and Group or Channel Up/ Down in

Conventional Format.) For further details, contact

your dealer.

Microphone Speaker

ePOWER switch/ VOLUME control

Turn clockwise to switch ON the transceiver. Rotate

to adjust the volume. Turn counterclockwise fully to

switch OFF the transceiver.

rAuxiliary (orange) key

Press to activate its auxiliary function {page 8}.

tBattery pack release latch

Pull back on this latch to release the battery pack.

See “Installing/ Removing the Battery Pack” on page

yPF (Programmable Function) key

Press to activate its auxiliary function {page 8}.

uPTT (Push-To-Talk) switch

Press this switch, then speak into the microphone to

call a station.

iPF (Programmable Function) key

Press to activate its auxiliary function {page 8}.

oTransmit/ Battery low indicator

This red LED lights during transmission. If

programmed by your dealer, when the battery pack

power is low, the LED flashes during transmission.

Replace or recharge the battery pack.

!0!0

!0 S, A, tt

tB, and Css

s keys

Press to activate their auxiliary functions {page 8}.

!1!1

!1 DTMF keypad (keypad models only)

Press the keys on the keypad to send DTMF tones.

!2!2

!2 Universal connector

Connect the (optional KMC-25) speaker/ microphone

here. Otherwise, keep the supplied cover in place.

■Display

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PROGRAMMABLE AUXILIARY FUNCTIONS

Keys r, y, i, and !0 {pages 5 and 6} can be programmed

with the auxiliary functions listed in the following table. The

programmable functions are dependant on the operation of

the transceiver (Conventional or Trunking Format). Contact

your dealer for further details on these functions.

Note:

◆If “Function” is programmed onto a key, the DTMF keypad (keypad

models only) can also be used for additional programmable keys.

◆Conventional Format is available for only the TK-280 and TK-380

models.

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1This function can be selected only when the Scrambler/ ANI board

has not been installed.

2This function can be programmed only on key r, the Auxiliary

(orange) key.

3This function can be selected only when the FleetSync™ enhanced

option and a GPS receiver have been installed.

4This function can be programmed only on the microphone PF keys.

5This function can be selected only when the Scrambler board has

been installed.

OPERATION OVERVIEW

Your dealer can program your transceiver for either

Trunking Format or Conventional Format.

■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 by your dealer.

■Conventional Format (TK-280/ TK-380 Only)

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 by your dealer.

OPERATING BASICS

■Switching Power ON/ OFF

Turn the Power switch/ Volume control clockwise to

switch the transceiver ON.

Turn the Power switch/ Volume control

counterclockwise to switch the transceiver OFF.

If the Radio Password function is programmed,

“PASSWORD” will appear on the display when the

power is turned ON. To unlock the transceiver, enter

the password, then press the S key. If you enter the

wrong password, an error tone sounds and the

transceiver remains locked. The password can

contain a maximum of 6 digits.

■Adjusting the Volume

Rotate the Power switch/ Volume control to adjust

the volume. Clockwise increases the volume and

counterclockwise decreases it.

■Selecting a System/ Group/ Channel

Select the desired system and group (Trunking

Format) using the encoder and the keys programmed

with System or Group Up/ Down.

Select the desired group and channel (Conventional

Format) using the encoder and the keys programmed

with Group or Channel Up/ Down.

■Time-out Timer (TOT)

The purpose of the Time-out Timer is to prevent any

caller from using a channel for an extended period of

time.

If you continuously transmit for a period of time that

exceeds the programmed time, the transceiver will

stop transmitting and an alert tone will sound. To

stop the tone, release the PTT switch.

Your dealer can program the TOT time in the range of

15 seconds to 10 minutes.

TRUNKED OPERATION (Trunking Format)

■Placing a Dispatch Call

1Select the desired system and group using the

encoder and the System or Group keys.

2Press the PTT switch.

3If a tone does not sound, communication is

possible; start speaking into the microphone.

Release the PTT switch to receive.

•For best sound quality at the receiving station, hold

the microphone approximately 1.5 inches (3 ~ 4 cm)

from your mouth.

■Receiving a Dispatch Call

1Select the desired system and group using the

encoder and the System or Group keys. (If the

Scan function has been programmed, you can

switch it ON or OFF as desired.)

2When you hear the dispatcher’s voice, readjust

the volume as necessary.

■Placing a Telephone Call (Keypad Models Only)

1Select the desired system and group using the

encoder and the System or Group keys.

2Press and hold the PTT switch for approximately

1 second to ensure a connection.

•Confirm that there is a dial tone after you release the

PTT switch.

3Press and hold the PTT switch, then dial using

the front panel keypad.

•After dialing, release the PTT switch and wait for a

response from the called party.

4When the called party responds, press the PTT

switch and speak into the microphone. Release

the PTT switch to receive.

•Only one person can speak at a time.

5To end the call, press and hold the PTT switch,

then press the # key or the key programmed as

Tel Disconnect.

■Receiving a Telephone Call (Keypad Models Only)

1Select the desired system and group using the

encoder and the System or Group keys. (If the

Scan function has been programmed, you can

switch it ON or OFF as desired.)

•A ringing tone will sound when a call is received.

2Press and hold the PTT switch to speak, and

release it to receive.

•Only one person can speak at a time.

3To end the call, press and hold the PTT switch,

then press the # key or the key programmed as

Tel Disconnect.

CONVENTIONAL OPERATION (Trunking Format)

■Transmitting

1Select the desired system and group using the

encoder and the System or Group keys.

2Press the key programmed as Monitor to check

whether or not the channel is free.

•If the channel is busy, wait until it becomes free.

3Press the PTT switch and speak into the

microphone. Release the PTT switch to receive.

•For best sound quality at the receiving station, hold

the microphone approximately 1.5 inches (3 ~ 4 cm)

from your mouth.

■Receiving

1Select the desired system and group using the

encoder and the System or Group keys. (If the

Scan function has been programmed, you can

switch it ON or OFF as desired.)

2When you hear the dispatcher’s voice, readjust

the volume as necessary.

SYSTEM SCAN (Trunking Format)

If the Scan function is programmed, systems can be

scanned by pressing the key programmed as Scan.

When the Scan key is pressed, the SCN indicator and

“-SCAN-” or the revert system/ group number, appear on

the display and scanning starts. The systems not locked

out of the scanning sequence are scanned.

When a call is received, scanning stops and the system

and group digits appear. Press the PTT switch and

speak into the microphone to respond to the call. The

transceiver will continue scanning after a predetermined

time delay if the PTT switch is released and no further

signal is received.

■Scanning Trunked Systems

When scanning trunked systems, the revert groups

and the groups not locked out of the scanning

sequence are scanned. See “GROUP SCAN” on

page 18.

■Scanning Conventional Systems

When scanning conventional systems, the revert

groups and the groups not locked out of the scanning

sequence are scanned. See “GROUP SCAN” on

page 18.

■Scan Lockout

If a programmable auxiliary key is programmed with

Scan Del/Add, each system can be locked out of the

scan sequence manually. The delete indicator ( s )

will appear on the display when the selected system

is locked out.

■Scan Revert

You can select revert systems and groups using the

encoder and the System or Group keys.

Four types of Scan Reverts which can be

programmed by your dealer are available:

•Last Called Revert: The last system/ group

received is assigned as the new revert system

and group.

•Last Used Revert: The last system/ group

responded to is assigned as the new revert

system and group.

•Selected: The last system/ group selected is

assigned as the new revert system and group.

•Selected + Talkback: If the system/ group has

been changed during Scan, the newly selected

system/ group is assigned as the new revert

system and group. The transceiver “talks back”

on the current receive group.

GROUP SCAN (Trunking Format)

Group Scan is available for both trunked and

conventional systems. This feature is useful when more

than one group is programmed in a system. Group

Scan is set by your dealer on request. It scans the

revert groups as well as groups that are allowed to be

scanned.

When a call is received, the group indicator shows the

group number, and that group becomes the revert

group. Simply press the PTT switch to respond to the

call.

You can also perform Group Scan while using a priority

channel. Please contact your dealer for information

concerning Priority Scan.

CONVENTIONAL OPERATION (Conventional Format)

■Transmitting

1Select the desired group and channel using the

encoder and the Group or Channel keys.

2Press the key programmed as Monitor to check

whether or not the channel is free.

•If the channel is busy, wait until it becomes free.

3Press the PTT switch and speak into the

microphone. Release the PTT switch to receive.

•For best sound quality at the receiving station, hold

the microphone approximately 1.5 inches (3 ~ 4 cm)

from your mouth.

■Receiving

1Select the desired group and channel using the

encoder and the Group or Channel keys. (If the

Scan function has been programmed, you can

switch it ON or OFF as desired.)

2When you hear a caller’s voice, readjust the

volume as necessary.

SCAN (Conventional Format)

If the Scan function is programmed, groups or channels

can be scanned by pressing the key programmed as

Scan. Scan can be used as either Single Scan or Multi

Scan. Single Scan monitors only the channels of a

single group. Multi Scan monitors all channels of every

group. When the Scan key is pressed, the SCN

indicator and “-SCAN-” or the revert group/ channel

number, appear on the display and scanning starts.

When a call is received, scanning stops and the group

and channel digits appear. Press the PTT switch and

speak into the microphone to respond to the call. The

transceiver will continue scanning after an adjustable

time delay, if the PTT switch is released, and no further

signal is received.

When the displayed group is not locked out of the

scanning sequence, the add indicator ( ) will appear on

the display.

■Priority Scan

The priority channel must be programmed in order

for Priority Scan to function.

The transceiver will automatically change to the

priority channel when a signal is received on it, even

if a signal is being received on a normal channel.

The indicator appears when the displayed channel

is the priority channel.

2-TONE SIGNALLING (Conventional Format)

2-Tone Signalling is either activated or deactivated by

your dealer.

2-Tone Signalling only opens the squelch when the

transceiver receives two tones corresponding to those

set up in the transceiver. When the squelch opens, you

will be able to hear the caller without any further action.

After a correct 2-Tone signal is received and the squelch

opens, pressing the key programmed as Monitor will

cancel the connection.

If your dealer programmed Transpond for 2-Tone

Signalling, your transceiver will automatically send an

acknowledgment signal to the station that called you

with the correct 2-Tone signal. Transpond does not

function when you are called as a Group call.

If your dealer programmed Tone Alert for 2-Tone

Signalling, your transceiver will emit a beep when the

correct 2-Tone signal is received.

Note: This transceiver is only capable of decoding 2-Tone Signals. It

cannot encode a 2-Tone Signal.

FleetSync™ is an Alphanumeric 2-way Paging Function,

and is a protocol owned by KENWOOD Corporation.

FleetSync™ enables a variety of paging functions on

your transceiver, some of which depend on dealer

programming.

■Key Functions

FleetSync™: ALPHANUMERIC 2-WAY PAGING FUNCTION

Selcall Mode 1

Status Mode

Stack Mode

New Message

Display Mode

Normal Operating Mode

Press A

or receive

a Selcall

Receive

a new

message

Hold A for

1 second

Press

any key

Press

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A or #

Press

A or #

Press

A or #

Hold A or # for 1 second

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Selcall Mode may be skipped or the transceiver may exit Selcall

Mode automatically (as shown by the dash arrow).

■Selcall (Selective Calling)

A Selcall is a voice call to a particular station or to a

group of stations.

To Transmit:

1Select your desired system and group (or group

and channel).

2Press the A key to enter Selcall Mode.

3Press the tB or Cs key to select the ID of the

station you want to call.

•You can also enter digits by using the DTMF keypad if

Manual Dial is enabled. (Press to erase an

incorrect digit.)

4Press the PTT switch and begin your

conversation.

To Receive:

An alert tone will sound, the transceiver will

automatically enter Selcall Mode, and the calling

station’s ID will appear when a Selcall is received.

To respond to the call, press the PTT switch and

To View the Caller IDs in the Stack Memory:

The mail icon ( ) will flash when a Selcall call is

received and stacked.

1Press and hold the A key for more than 1 second

to enter Stack Mode.

•The last received Caller ID is displayed with the Caller

ID number. “I” (ID) appears with the number.

2Press the tB or Cs key to select the ID you

want to view (if more than one ID is stored in the

stack memory).

3To erase the ID, press and hold the S key for

more than 1 second.

Identification Codes:

An ID code is a combination of a 3-digit Fleet

number and a 4-digit ID number. Each transceiver

must have its own Fleet and ID number.

•Enter a Fleet number (100 ~ 349) to make a group call.

•Enter an ID number (1000 ~ 4999) to make an individual

call in your fleet.

•Enter a Fleet number followed by an ID number to make

an individual call in your desired fleet (Inter-fleet call).

•Select “ALL” Fleet and “ALL” ID to make a call to all units

(Broadcast call).

•Select “ALL” Fleet and enter an ID number to make a call

to the selected ID in all fleets (Supervisor call).

Note:

◆Broadcast and Supervisor calls are programmed functions

that cannot be made with a keypad.

◆The ID range may be limited by programming.

■Status Message

You can send and receive 2-digit Status messages

(10 ~ 79) which may be decided in your talk group.

Messages can contain up to 16 alphanumeric

characters.

A maximum of 9 received messages can be stored in

the stack memory of your transceiver. These saved

messages can be reviewed after reception. If the

stack memory is full, the oldest message will be

erased when a new message is received. The mail

icon ( ) lights when a message is stored in the

stack memory.

Note: All stored messages will be cleared when the transceiver

power is turned OFF.

To Transmit:

1Select your desired system and group (or group

and channel).

2Press the A key to enter Selcall Mode.

3Press the tB or Cs key to select the ID of the

station you want to call.

•You can also enter digits by using the DTMF keypad if

Manual Dial is enabled. (Press to erase an

incorrect digit.)

4Press the A or # key to enter Status Mode.

5Press the tB or Cs key to select the status you

want to transmit.

•You can also enter digits by using the DTMF keypad if

Manual Dial is enabled. (Press to erase an

incorrect digit.)

6Press the PTT switch to initiate the Status call.

•“COMPLETE” is displayed when the call has been

successfully transmitted.

To Receive:

The mail icon ( ) will flash and a calling ID or text

message will appear when a Status call is received.

•The display alternates between the caller ID and the

message.

Press any key to return to Normal Operation Mode.

To Review the Messages in the Stack Memory:

1Press and hold the A key for more than 1 second

to enter Stack Mode.

•The last received message is displayed with the

message number. “S” (Status) appears with the

number.

2Press the tB or Cs key to select the message

you want to view (if more than one message is

stored in the stack memory).

3Press the S key to toggle between the message

and the caller’s ID.

4To erase the message, press and hold the S key

for more than 1 second.

Automatic Status Response:

If you pre-select a status number and then leave the

transceier in Status Mode, the transceiver will

automatically respond with that status number when

a request from the base station is received. (The

base station request function is optional.)

■Optional Short Messages Feature

Received short messages (maximum of 48

characters) are displayed the same as Status

messages {page 24}, however only 4 short

messages can be stored in the stack memory. “M”

(Message) and the message number appear with the

message.

DTMF (DUAL TONE MULTI FREQUENCY) CALLS

■Making a DTMF Call (Keypad Models Only)

There are two methods of making a DTMF call:

•Manual dialing

•Store and sending

To make a call by dialing manually:

1Press and hold the PTT switch.

2Enter the desired digits using the front panel

keypad.

•The corresponding DTMF tones sound each time you

press a key.

•If you release the PTT switch, transmit mode will end

even if the complete number has not been sent.

•If your dealer has activated the Keypad Auto PTT

function, you need not hold down the PTT switch

while pressing the keys on the keypad in Conventional

systems. The DTMF code will be sent automatically

when you press a key.

Note: Keypad Auto PTT does not function in Trunking systems.

To make a call by storing and sending:

1Enter the desired digits using the front panel

keypad.

•The digits appear on the display as you enter them.

2After entering the complete number, press the

PTT switch.

•If you are using the transceiver in a Conventional

system, the DTMF code is transmitted after pressing

the PTT switch.

•If you are using the transceiver in a Trunking system,

the DTMF code is transmitted after a connection is

established. Releasing the PTT switch before a

connection is established will stop the transmission

from occuring.

•If you are using the transceiver in a RIC (Repeater

Inter-Connect) Trunking system, the DTMF code is

transmitted after a connection with the telephone

system is established. If you press the key

programmed as Auto Tel instead of the PTT switch,

the call will automatically connect to the repeater, and

the DTMF code will be transmitted.

Note:

◆You can only store up to 16 digits before sending. Entering

more than 16 digits will cause an error tone to sound.

◆If you switch the power OFF before sending the number, the

number will be cleared from memory.

■DTMF Signalling

Your dealer can program a group with a DTMF

signalling code. When you receive a call with a code

that matches yours, the signalling indicator will flash

and a tone will sound. Squelch opens and you will

hear the call.

Squelch will close when you receive a call with a

code that matches your signalling reset code.

When making a call on a group programmed with a

DTMF signalling code, the signalling indicator will

light and the squelch will open.

■DBD (Dead Beat Disable)

Depending on how your dealer programs your

transceiver, when you receive a call containing a

DBD code, either transmit mode or receive and

transmit modes will be disabled. When a DBD code

is received, a tone will sound.

DBD is cancelled when you receive a call with a DBD

cancel code.

AUDIBLE USER FEEDBACK TONES

The transceiver emits various tones to indicate the

transceiver’s operating status. Contact your dealer for

further information on these tones.

enoT lanoitnevnoC

tamroF

gniknurT

tamroF

trelAseYseY

ysuBseYseY

nODBDseYseY

ffODBDseYseY

yaleDoNseY

yneDoNseY

/edoMkcaBgniRmetsySeerF

edoMhcraeSmetsyS oNseY

llaCpuorGseYseY

llaClaudividnIseYseY

tpecretnIoNseY

rorrEtupnIyeKseYseY

]A[sserPyeKseYseY

]B[sserPyeKseYseY

]C[sserPyeKseYseY

tnemeergAdrowssaPseYseY

NOrewoPseYseY

trelAerPseYoN

deecorPoNseY

esaeleRTTPseYseY

eueuQoNseY

enoT lanoitnevnoC

tamroF

gniknurT

tamroF

gnigniRoNseY

revOlloRseYseY

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dnopsnarTseYseY

TK-481 Terminal Descriptions

Universal connector

It is possible to use a resin-based cover for the Universal connector.

NO. Name Description Impedance I/O

1 SSW Ext/Int Speaker Switch Input High Impedance I

2 SP+ BTL Output + for External Speaker 8 ΩO

3 SP- BTL Output - for External Speaker 16 ΩO

4 MSW Ext/Int MIC Switch Input High Impedance I

5 EMC External MIC Input 1.8 kΩI

6 ME External MIC GND GND -

7 PTT External PTT Input High Impedance I

8 PF Programable Function Key Input High Impedance I

9 NC Not used - -

10 E GND GND -

11 5M 5V power supply output 5V -

12 TXD Serial Data Output CMOS O

13 RXD Serial Data Input CMOS I

14 NC Not used - -

Antenna Terminal

50 Ω impedance

Battery Terminal

The battery terminal uses a spring plate.

The negative terminal connects to the chassis ground.

The battery is mounted on the rear and upper side of the transceiver using a

sliding mounting method.

2- 12

Back side view

Antena

Radio FRequency eneRgy SaFety inFoRmation

This Kenwood transceiver has been tested and complies with the standards listed below, in regards

to Radio Frequency (RF) energy and electromagnetic energy (EME) generated by the transceiver.

• FCC RF exposure limits for

Occupational Use Only

. RF Exposure limits adopted by the FCC are generally

based on recommendations from the National Council on Radiation Protection and Measurements, & the

American National Standards Institute.

• FCC OET Bulletin 65 Edition 97-01 Supplement C

• American National Standards Institute (C95.1 – 1992)

• American National Standards Institute (C95.3 – 1992)

This Kenwood transceiver generates RF EME while transmitting. RF EME (Radio Frequency Electric &

Magnetic Energy) has the potential to cause slight thermal, or heating effects to any part of your body less

than the recommended distance from this radio transmitter’s antenna. RF energy exposure is determined

primarily by the distance to and the power of the transmitting device. In general, RF exposure is minimized

when the lowest possible power is used or transmission time is kept to the minimum required for consistent

communications, and the greatest distance possible from the antenna to the body is maintained. The

transceiver has been designed for and is classied for

Occupational Use Only

. Occupational/ controlled

exposure limits are applicable to situations in which persons are exposed to RF energy as a consequence

of their employment, and such persons have been made aware of the potential for exposure and can

exercise control over their exposure. This means you can use the transceiver only if you are aware of

the potential hazards of operating a transceiver and are familiar in ways to minimize these hazards. This

transceiver is not intended for use by the general public in uncontrolled environments. Uncontrolled

environment exposure limits are applicable to situations in which the general public may be exposed to RF

energy, or in which the persons who are exposed as a consequence of their employment may not be fully

aware of the potential for exposure or cannot exercise control over their exposure.

The following list provides you with the information required to ensure that you are aware of RF

exposure and of how to operate this transceiver so that the FCC RF exposure limitations are not

exceeded.

• While transmitting (holding the PTT switch or speaking with VOX enabled), always keep the antenna

and the radio at least 3 cm (1 3/16 inches) from your body or face, as well as from any bystanders. A

LED on the top of the radio shows red when the transmitter is operating in both PTT and VOX modes.

• Do not transmit for more than 50% of the total transceiver use time; transmitting over 50% of the total use

time may exceed the limits in accordance to the FCC RF exposure requirements. Nominal transceiver

operation is 5% transmission time, 5% reception time, and 90% stand-by time.

• Use only the specied antenna for this transceiver; this may be either the antenna provided with the

transceiver or another antenna authorized by Kenwood.

Use only Kenwood authorized accessories (antennas, battery packs, belt clips, Speaker/ Mics or

headsets etc.): When worn on the body, always place the radio in a Kenwood recommended clip or

carrying case meant for this product. The use of other than recommended or approved body- worn

accessories may result in RF exposure levels which exceed the FCC’s occupational/ controlled

environment RF exposure limits.

To ensure that your exposure to RF EME is within the FCC limits for occupational use, you must

observe and adhere to the above points.

Electromagnetic Interference Compatibility

Electronic devices are susceptible to electromagnetic interference (EMI) if they are not adequately

shielded or designed for electromagnetic compatibility. Because this transceiver generates RF

energy, it can cause interference to such equipment.

• Turn OFF your transceiver where signs are posted to do so. Hospitals and health care facilities use

equipment that is sensitive to electromagnetic radiation.

• Turn OFF your transceiver while on board an aircraft when so instructed. Use of the transceiver must

be in accordance with airline regulations and/or crew instructions. B59-2546-00

Kenwood USA 229900 800/900MHz Transceiver User Manual Manual

Kenwood USA Corporation 800/900MHz Transceiver Manual

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