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INSTRUCTION MANUAL
144 MHz FM TRANSCEIVER
VHF FM TRANSCEIVER
TM-271A
144 MHz FM TRANSCEIVER
TM-271 MENU
TM-271E
© B62-1738-00 (K,E,M2,M3)
09 08 07 06 05 04 03 02 01 00
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THANK YOU! MARKET CODES K: The Americas Thank you for choosing this KENWOOD transceiver. E: Europe KENWOOD always provides Amateur Radio products Mn: General which surprise and excite serious hobbyists. This transceiver is no exception. As you learn how to use this (Where “n” represents a variation number.) transceiver, you will find that KENWOOD is pursuing “user friendliness”. For example, each time you change The market code is printed on the bar-code label of the the Menu No. in Menu mode
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NOTICES TO THE USER PRECAUTIONS One or more of the following statements may be applicable: Please observe the following precautions to prevent FCC WARNING fire, personal injury, and/or transceiver damage: This equipment generates or uses radio frequency energy. Changes •Do not attempt to configure your transceiver while or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction driving; it is simply too dangerous. manual.
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CONTENTS SUPPLIED ACCESSORIES ...................................... 1 SELECTING A FREQUENCY .................................. 15 VFO MODE .......................................................... 15 WRITING CONVENTIONS FOLLOWED IN THIS MANUAL ...................................................... 1 MHz MODE .......................................................... 16 DIRECT FREQUENCY ENTRY ...................................... 16 CHAPTER 1 PREPARATION CHAPTER 5 MENU SETUP MOBILE INSTALLATIO
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SCAN RESUME METHOD ...................................... 45 RECALLING A MEMORY CHANNEL ....................... 30 USING THE TUNING CONTROL .................................... 30 CHAPTER 9 SELECTIVE CALL 1 USING THE MICROPHONE KEYPAD............................... 31 CTCSS AND DCS ................................................... 46 CLEARING A MEMORY CHANNEL ......................... 31 2 CTCSS .................................................................... 46 NAMING A MEMORY CHANNEL....
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FREQUENCY STEP SIZE ....................................... 56 DISPLAY BACKLIGHT............................................. 57 PERMANENT BACKLIGHT ........................................... 57 AUTOMATIC BACKLIGHT............................................. 57 LOCK FUNCTION ................................................... 58 DATA COMMUNICATION SPEED ........................... 58 TUNE ENABLE........................................................ 58 MICROPHONE PF KEYS (KEYPAD MODELS ONLY)
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SUPPLIED ACCESSORIES WRITING CONVENTIONS FOLLOWED IN THIS MANUAL After carefully unpacking the transceiver, identify the The writing conventions described below have been items listed in the table below. We recommend you keep followed to simplify instructions and avoid unnecessary the box and packaging for shipping. repetition. A market area code (K, E, M2, or M3) can be found on Instruction What to do the label attached to the package box. Press [KEY].e Press and releas KEY. Accessory Part Num
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PREPARATION 2 Position the transceiver, then insert and tighten MOBILE INSTALLATION 1 the supplied hexagon SEMS screws (4) and flat To install the transceiver, select a safe, convenient washers (4). location inside your vehicle that minimizes danger to •Double check that all hardware is tightened to prevent your passengers and yourself while the vehicle is in vehicle vibration from loosening the bracket or motion. Consider installing the unit at an appropriate transceiver. position so that knee
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4 Confirm the correct polarity of the connections, then DC POWER CABLE CONNECTION attach the power cable to the battery terminals; red connects to the positive (+) terminal and black connects to the negative (–) terminal. 1 Locate the power input connector as close to the transceiver as •Use the full length of the cable without cutting off excess possible. even if the cable is longer than required. In particular, never remove the fuse holders from the cable. MOBILE OPERATION Red The vehicle bat
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2 Connect the transceiver’s DC power connector to the FIXED STATION OPERATION connector on the DC power cable. In order to use this transceiver for fixed station operation, •Press the connectors firmly together until the locking tab you will need a separate 13.8 V DC power supply (not 1 clicks. included). The recommended current capacity of your power supply is 12 A. 1 Connect the DC power cable to the regulated DC power supply and ensure that the polarities are correct (Red: positive, Black: n
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REPLACING FUSES ANTENNA CONNECTION If the fuse blows, determine the cause, then correct the Before operating, install an efficient, well-tuned antenna. problem. After the problem is resolved, replace the fuse. The success of your installation will depend largely on 1 If newly installed fuses continue to blow, disconnect the the type of antenna and its correct installation. The power cable and contact your authorized KENWOOD transceiver can give excellent results if the antenna dealer or an aut
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Attach the supplied microphone hanger in an appropriate ACCESSORY CONNECTIONS location using the screws included in the screw set. EXTERNAL SPEAKER 1 Microphone hanger If you plan to use an external speaker, choose a speaker with an impedance of 8 Ω. The external speaker jack accepts a 3.5 mm (1/8") mono (2-conductor) plug. We recommend using the SP-50B speaker. Microphone hanger screw (3 mm x 10 mm) Keypad serial data No Connection MIC, 600 Ω impedance GND (MIC) MICROPHONE PTT GND For voice c
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CONNECTING TO A TNC (E MARKET MODELS ONLY) To connect an external TNC to the transceiver, use an optional PG-5A cable. The DATA connector on the rear 1 GND of the transceiver mates with the 6-pin mini-DIN plug on this cable. Note: Pin No. Pin Name Function ◆ If the external TNC has a common pin for 1200 bps and 9600 bps Packet data input data output, connect this pin to the DATA connector PR9 pin. 1D PK Shorting the PR9 and PR1 pins will cause the TNC to malfunction. •r TX data from TNC to trans
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YOUR FIRST QSO YOUR FIRST QSO q Press [ ] (Power) briefly to switch the transceiver power ON. Are you ready to give your transceiver a quick try? Reading this section should get your voice on the •A high pitched double beep sounds and a Power-on 2 message appears momentarily. The various indicators air right away. The instructions below are intended and the current operating frequency appear on the LCD. only as a quick guide. If you encounter problems or there is something you would like to
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GETTING ACQUAINTED Press [F] then press [MENU] to enter Menu Mode FRONT PANEL {page 18}. Note: This section describes only the main functions of the front Turn to select: panel controls. Explanations for functions not described here are provided in the appropriate sections of this instruction manual. •Operating frequencies when in VFO Mode {page 15}. •Memory Channels when in Memory Recall Mode 3 {page 30}. q w •Menu Nos. when in Menu Mode {page 18}. •Scan direction while scanning {pages 27, 39
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In MR Mode, press [F] then press [VFO] to transfer DISPLAY the contents of the selected Memory Channel to the VFO {page 33}. w e r ty u i o!0!1 q t t t t t MR key Press to enter Memory Recall Mode {page 30}. In this mode, you can change memory channels using 3 the Tuning control or Mic [UP]/[DWN]. Press and hold for 1 second while in Memory Recall Mode to begin Memory Scan {page 42}. !7 !6 !5 !4 !3 !2 Press [F], use the Tuning control to select the desired channel, then press [MR] to reprogram
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y !4 Appears when the Automatic Simplex Check (ASC) Appears when the Memory Channel Lockout function is function is activated {page 26}. ON {page 44}. u !5 Appears when the Priority Scan function is activated Shows the strength of transmitted {page 15} and received {page 43}. {page 54} signals. 3 i indicates the squelch is open and the frequency is “busy”. It also appears when the squelch is set to Appears when the Weather Alert function is activated minimum {page 14}. If using CTCSS or DCS, i
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REAR PANEL MICROPHONE q w er r q q t y w u e i 3 DTMF Microphone Microphone (KMC-30) q q q q q Antenna connector q q q q q PTT (Push-to-Talk) switch Connect an external antenna {page 5} here. When Press and hold to transmit. Release to receive. making test transmissions, connect a dummy load in place of the antenna. The antenna system or load w w w w w DWN/ key should have an impedance of 50 Ω. Press to lower the operating frequency, Memory Note: E market models use an N-type antenna connect
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r r r r r CALL/A key MIC KEYPAD DIRECT ENTRY Identical to the front panel CALL key. This key can The microphone keypad (keypad models only) allows be reprogrammed if desired {page 59}. Press and you to make various entries depending on which mode hold Mic [PTT], then press [CALL/A] to transmit A. the transceiver is in. In VFO or Memory Recall mode, use the Mic keypad to t t t t t VFO/B key select a frequency {page 16} or Memory Channel Identical to the front panel VFO key. This key can be num
