TM-271-English.pdf

INSTRUCTION MANUAL

144 MHz FM TRANSCEIVER

VHF FM TRANSCEIVER

TM-271A

144 MHz FM TRANSCEIVER

TM-271E

TM-271

09 08 07 06 05 04 03 02 01 00

THANK YOU!

Thank you for choosing this KENWOOD transceiver.

KENWOOD always provides Amateur Radio products

which surprise and excite serious hobbyists. This

transceiver is no exception. As you learn how to use this

transceiver, you will find that KENWOOD is pursuing

“user friendliness”. For example, each time you change

the Menu No. in Menu mode, you will see a text

message on the display that lets you know what you are

configuring.

Though user friendly, this transceiver is technically

sophisticated and some features may be new to you.

Consider this manual to be a personal tutorial from the

designers. Allow the manual to guide you through the

learning process now, then act as a reference in the

coming years.

KENWOOD believes that this product will satisfy your

requirements on both voice and data communications.

MARKET CODES

K: The Americas

E: Europe

M n : General

(Where “n” represents a variation number.)

The market code is printed on the barcode label of the

carton box.

Refer to the product specifications {pages 71, 72} for

information on the available operating frequencies within

each model. For accessories supplied with the model,

refer to page 1.

FEATURES

•Weather Alert Radio function checks the 1050 Hz tone from

NOAA (U.S.A./ Canada only).

• Menu allows for easy control and selecting of various

functions.

• Up to 200 memory channels to program frequencies and

other various data. (Up to 100 memory channels if Memory

Channel Names are assigned to the channels.)

• Continuous Tone Coded Squelch System (CTCSS) or

Digital Code Squelch (DCS) rejects unwanted calls from

other stations.

• Equipped with an easy-to-read large LCD with

alphanumeric display capability.

• The dedicated DATA connector is available for 1200 bps or

9600 bps Packet operation (E market models only).

• Free PC software (Memory Control Program) is available to

program the frequency, signalling, and other settings of your

transceiver. The MCP can be downloaded at:

http://www . kenwood.com/i/products/info/amateur . html

MODELS COVERED BY THIS MANUAL

The models listed below are covered by this manual.

TM-271A: 144 MHz FM Transceiver

TM-271A: VHF FM Transceiver

TM-271E: 144 MHz FM Transceiver

NOTICES TO THE USER

One or more of the following statements may be applicable:

PRECAUTIONS

Please observe the following precautions to prevent

fire, personal injury, and/or transceiver damage:

• Do not attempt to configure your transceiver while

driving; it is simply too dangerous.

• Be aware of local laws pertaining to the use of

headphones/headsets while driving on public

roads. If in doubt, do not wear headphones while

mobiling.

• Do not transmit with high output power for

extended periods; the transceiver may overheat.

• Do not modify the transceiver unless instructed by

this manual or other KENWOOD documentation.

• Do not expose the transceiver to long periods of

direct sunlight nor place it close to heating

appliances.

• Do not place the transceiver in excessively dusty,

humid or wet areas, nor on unstable surfaces.

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.

• If an abnormal odor or smoke is detected coming

from the transceiver, turn OFF the power

immediately. Contact a KENWOOD service station

or your dealer.

• This transceiver is designed for a 13.8 V power

source. Never use a 24 V battery to power the

transceiver.

When condensation occurs inside the transceiver:

Condensation may occur inside the transceiver when the room is

warmed using a heater on a cold day or when the transceiver is

quickly moved from a cold location to a warm location. When

condensation occurs, the microcomputer and/or the transmit/receive

circuits may become unstable, resulting in transceiver malfunction. If

this happens, turn OFF the transceiver and wait for a while. When the

condensed droplets disappear, the transceiver will function normally.

CONTENTS

SELECTING A FREQUENCY .................................. 15

VFO M ODE .......................................................... 15

MHz M ODE .......................................................... 16

D IRECT F REQUENCY E NTRY ...................................... 16

CHAPTER 5 MENU SETUP

WHAT IS A MENU? .................................................. 18

MENU ACCESS ...................................................... 18

MENU FUNCTION LIST .......................................... 19

CHAPTER 6 OPERATING THROUGH REPEATERS

OFFSET PROGRAMMING FLOW ........................... 22

PROGRAMMING AN OFFSET ................................ 23

S ELECTING AN O FFSET D IRECTION .............................. 23

S ELECTING AN O FFSET F REQUENCY ............................ 23

A CTIVATING THE T ONE F UNCTION ................................ 24

S ELECTING A T ONE F REQUENCY ................................. 24

AUTOMATIC REPEATER OFFSET ......................... 25

TRANSMITTING A 1750 Hz TONE .......................... 25

REVERSE FUNCTION ............................................ 26

AUTOMATIC SIMPLEX CHECK (ASC) .................... 26

TONE FREQUENCY ID SCAN ................................ 27

CHAPTER 7 MEMORY CHANNELS

NUMBER OF MEMORY CHANNELS ...................... 28

SIMPLEX & REPEATER OR ODD-SPLIT

MEMORY CHANNEL? ............................................. 28

STORING SIMPLEX FREQUENCIES OR

STANDARD REPEATER FREQUENCIES ............... 29

STORING ODD-SPLIT REPEATER

FREQUENCIES ....................................................... 30

SUPPLIED ACCESSORIES ...................................... 1

WRITING CONVENTIONS FOLLOWED

IN THIS MANUAL ...................................................... 1

CHAPTER 1 PREPARATION

MOBILE INSTALLATION ........................................... 2

DC POWER CABLE CONNECTION .......................... 3

Mobile Operation .................................................. 3

Fixed Station Operation ........................................ 4

Replacing Fuses ................................................... 5

ANTENNA CONNECTION ......................................... 5

ACCESSORY CONNECTIONS ................................. 6

External Speaker .................................................. 6

Microphone ........................................................... 6

PC Connection ..................................................... 6

CONNECTING TO A TNC (E M ARKET M ODELS O NLY ) .... 7

CHAPTER 2 YOUR FIRST QSO

CHAPTER 3 GETTING ACQUAINTED

FRONT PANEL .......................................................... 9

DISPLAY ................................................................. 10

REAR PANEL .......................................................... 12

MICROPHONE ........................................................ 12

M IC K EYPAD D IRECT E NTRY ...................................... 13

CHAPTER 4 OPERATING BASICS

SWITCHING THE POWER ON/OFF ....................... 14

ADJUSTING THE VOLUME .................................... 14

ADJUSTING THE SQUELCH .................................. 14

TRANSMITTING ...................................................... 15

S ELECTING AN O UTPUT P OWER ................................. 15

RECALLING A MEMORY CHANNEL ....................... 30

U SING THE T UNING C ONTROL .................................... 30

U SING THE M ICROPHONE K EYPAD ............................... 31

CLEARING A MEMORY CHANNEL ......................... 31

NAMING A MEMORY CHANNEL ............................. 32

MEMORY CHANNEL TRANSFER ........................... 33

M EMORY \ VFO T RANSFER .................................... 33

C HANNEL \ C HANNEL T RANSFER .............................. 33

CALL CHANNEL ...................................................... 35

R ECALLING THE C ALL C HANNEL ................................. 35

R EPROGRAMMING THE C ALL C HANNEL ......................... 35

WEATHER ALERT (K M ARKET M ODELS O NLY ) ............. 36

P ROGRAMMING THE W EATHER R ADIO F REQUENCY ......... 36

E NABLING A W EATHER A LERT .................................... 36

CHANNEL DISPLAY ................................................ 37

CHAPTER 8 SCAN

NORMAL SCAN ...................................................... 40

B AND S CAN ........................................................... 40

P ROGRAM S CAN ..................................................... 40

MHz S CAN ........................................................... 41

MEMORY SCAN ...................................................... 42

A LL -C HANNEL S CAN ................................................ 42

G ROUP S CAN ......................................................... 42

CALL SCAN ............................................................ 43

PRIORITY SCAN ..................................................... 43

P ROGRAMMING A P RIORITY C HANNEL .......................... 43

U SING P RIORITY S CAN ............................................. 44

MEMORY CHANNEL LOCKOUT ............................. 44

SCAN RESUME METHOD ...................................... 45

CHAPTER 9 SELECTIVE CALL

CTCSS AND DCS ................................................... 46

CTCSS .................................................................... 46

S ELECTING A CTCSS F REQUENCY ............................ 47

CTCSS F REQUENCY ID S CAN ................................. 47

DCS ......................................................................... 48

S ELECTING A DCS C ODE ......................................... 48

DCS C ODE ID S CAN .............................................. 49

CHAPTER 10 DUAL TONE MULTI-FREQUENCY

(DTMF) FUNCTIONS

MANUAL DIALING .................................................. 50

DTMF M ONITOR .................................................... 50

DTMF TX H OLD ................................................... 51

AUTOMATIC DIALER .............................................. 51

S TORING A DTMF N UMBER IN M EMORY ...................... 51

C ONFIRMING S TORED DTMF N UMBERS ...................... 52

T RANSMITTING A S TORED DTMF N UMBER ................... 52

A DJUSTING THE DTMF T ONE T RANSMISSION S PEED ...... 52

A DJUSTING THE P AUSE D URATION .............................. 53

DTMF LOCK ............................................................ 53

CHAPTER 11 AUXILIARY FUNCTIONS

APO (AUTO POWER OFF) ..................................... 54

BEAT SHIFT ............................................................ 54

S-METER SQUELCH .............................................. 54

S QUELCH H ANG T IME .............................................. 55

BEEP FUNCTION .................................................... 55

BUSY CHANNEL LOCKOUT ................................... 56

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