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© B62-1804-
00 (K,E,M2,M3,M4)
09 08 07 06 05 04 03 02 01
00
INSTRUCTION MANUAL
144 MHz FM TRANSCEIVER
VHF FM TRANSCEIVER
TM-271A
144 MHz FM TRANSCEIVER
TM-271E
TM-271
MENU


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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.
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
MARKET CODES
K:
The Americas
E:
Europe
Mn:
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


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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.
·
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.
NOTICES TO THE USER
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.
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.


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CONTENTS
SELECTING A FREQUENCY .................................. 15
VFO MODE .......................................................... 15
MHz MODE .......................................................... 16
DIRECT FREQUENCY ENTRY ...................................... 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
SELECTING AN OFFSET DIRECTION .............................. 23
SELECTING AN OFFSET FREQUENCY ............................ 23
ACTIVATING THE TONE FUNCTION ................................ 24
SELECTING A TONE FREQUENCY ................................. 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 MARKET MODELS ONLY) .... 7
CHAPTER
2
YOUR FIRST QSO
CHAPTER
3
GETTING ACQUAINTED
FRONT PANEL .......................................................... 9
DISPLAY ................................................................. 10
REAR PANEL .......................................................... 12
MICROPHONE ........................................................ 12
MIC KEYPAD DIRECT ENTRY ...................................... 13
CHAPTER
4
OPERATING BASICS
SWITCHING THE POWER ON/OFF ....................... 14
ADJUSTING THE VOLUME .................................... 14
ADJUSTING THE SQUELCH .................................. 14
TRANSMITTING ...................................................... 15
SELECTING AN OUTPUT POWER ................................. 15


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1
2
3
4
5
6
7
8
9
10
11
12
13
14
SCAN RESUME METHOD ...................................... 45
CHAPTER
9
SELECTIVE CALL
CTCSS AND DCS ................................................... 46
CTCSS .................................................................... 46
SELECTING A CTCSS FREQUENCY ............................ 47
CTCSS FREQUENCY ID SCAN ................................. 47
DCS ......................................................................... 48
SELECTING A DCS CODE ......................................... 48
DCS CODE ID SCAN .............................................. 49
CHAPTER
10
DUAL TONE MULTI-FREQUENCY
(DTMF) FUNCTIONS
MANUAL DIALING .................................................. 50
DTMF MONITOR .................................................... 50
DTMF TX HOLD ................................................... 51
AUTOMATIC DIALER .............................................. 51
STORING A DTMF NUMBER IN MEMORY ...................... 51
CONFIRMING STORED DTMF NUMBERS ...................... 52
TRANSMITTING A STORED DTMF NUMBER ................... 52
ADJUSTING THE DTMF TONE TRANSMISSION SPEED ...... 52
ADJUSTING THE PAUSE DURATION .............................. 53
DTMF LOCK ............................................................ 53
CHAPTER
11
AUXILIARY FUNCTIONS
APO (AUTO POWER OFF) ..................................... 54
BEAT SHIFT ............................................................ 54
S-METER SQUELCH .............................................. 54
SQUELCH HANG TIME .............................................. 55
BEEP FUNCTION .................................................... 55
BUSY CHANNEL LOCKOUT ................................... 56
RECALLING A MEMORY CHANNEL ....................... 30
USING THE TUNING CONTROL .................................... 30
USING THE MICROPHONE KEYPAD ............................... 31
CLEARING A MEMORY CHANNEL ......................... 31
NAMING A MEMORY CHANNEL ............................. 32
MEMORY CHANNEL TRANSFER ........................... 33
MEMORY \ VFO TRANSFER .................................... 33
CHANNEL \ CHANNEL TRANSFER .............................. 33
CALL CHANNEL ...................................................... 35
RECALLING THE CALL CHANNEL ................................. 35
REPROGRAMMING THE CALL CHANNEL ......................... 35
WEATHER ALERT (K MARKET MODELS ONLY) ............. 36
PROGRAMMING THE WEATHER RADIO FREQUENCY ......... 36
ENABLING A WEATHER ALERT .................................... 36
CHANNEL DISPLAY ................................................ 37
CHAPTER
8
SCAN
NORMAL SCAN ...................................................... 40
BAND SCAN ........................................................... 40
PROGRAM SCAN ..................................................... 40
MHz SCAN ........................................................... 41
MEMORY SCAN ...................................................... 42
ALL-CHANNEL SCAN ................................................ 42
GROUP SCAN ......................................................... 42
CALL SCAN ............................................................ 43
PRIORITY SCAN ..................................................... 43
PROGRAMMING A PRIORITY CHANNEL .......................... 43
USING PRIORITY SCAN ............................................. 44
MEMORY CHANNEL LOCKOUT ............................. 44