Kenwood TM-281A, TM-281E

tuptuorewoP hgiH W6

woLW52.xorppA

noitaludoM

snoissimesuoirupS sselroBd06–

noitaivedycneuqerfmumixaM :ediW ±zHk

:worraN ±zHk5.2

)noitaludom%06ta(noitrotsidoiduA sselro%3

ecnadepmienohporciM 0 Ω 06

Variable reactance modulation

Transmitter

yrtiucriC

)dn2/ts1(ycneuqerfetaidemretnI zHk054/zHM59.94

)DANISBd21(ytivitisneS

)Bd6–(ytivitceleS eromrozHk21:ediW

eromrozHk01:worraN

)Bd06–(ytivitceleS sselrozHk03:ediW

sselrozHk42:worraN

ytivitisneshcleuqS

tuptuooiduA rehgihroW2

ecnadepmituptuooiduA 8 Ω

Double superheterodyne

(8 Ω , 5 % distortion)

Receiver

0.1 μV or less

Wide: 0.18 μV or less

Narrow: 0.22 μV or less

Contents

Main INSTRUCTION MANUAL 144 MHz FM TRANSCEIVER ISO3166 TM-281E TM-281A THANK YOU! MODELS COVERED BY THIS MANUAL MARKET CODES FEATURES PRECAUTIONS NOTICES TO THE USER CONTENTS Page Page SUPPLIED ACCESSORIES WRITING CONVENTIONS FOLLOWED IN THIS MANUAL PREPARATION MOBILE INSTALLATION DC POWER CABLE CONNECTION M F IXED S TATION O R EPLACING F ANTENNA CONNECTION ACCESSORY CONNECTIONS E M PC C YOUR FIRST QSO GETTING ACQUAINTED FRONT PANEL q (Power) switch/ Volume control w MENU button/ Tuning control e CALL key DISPLAY Page REAR PANEL :@ . q Antenna connector w Power Input 13.8 V DC cable e SP (speaker) jack M OPERATING BASICS SWITCHING THE POWER ON/OFF ADJUSTING THE VOLUME ADJUSTING THE SQUELCH TRANSMITTING S ELECTING AN O UTPUT P SELECTING A FREQUENCY VFO M MH Z M D IRECT F REQUENCY E Example 1 Example 2 Example 3 MENU SETUP WHAT IS A MENU? MENU ACCESS MENU FUNCTION LIST Page Page OPERATING THROUGH REPEATERS OFFSET PROGRAMMING FLOW PROGRAMMING AN OFFSET S ELECTING AN O FFSET D S ELECTING AN O FFSET F A CTIVATING THE T ONE F S ELECTING A T ONE F Available Tone Frequencies AUTOMATIC REPEATER OFFSET K market version only E market version only TRANSMITTING A 1750 Hz TONE REVERSE FUNCTION AUTOMATIC SIMPLEX CHECK (ASC) TONE FREQUENCY ID SCAN MEMORY CHANNELS NUMBER OF MEMORY CHANNELS SIMPLEX & REPEATER OR ODD-SPLIT MEMORY CHANNEL? STORING SIMPLEX FREQUENCIES OR STANDARD REPEATER FREQUENCIES STORING ODD-SPLIT REPEATER FREQUENCIES RECALLING A MEMORY CHANNEL U U SING THE M ICROPHONE K CLEARING A MEMORY CHANNEL NAMING A MEMORY CHANNEL MEMORY CHANNEL TRANSFER M C HANNEL \ C HANNEL T Page CALL CHANNEL R ECALLING THE C ALL C R EPROGRAMMING THE C ALL C WEATHER ALERT (K M ARKET M ODELS O P ROGRAMMING THE W EATHER R ADIO F E NABLING A W EATHER A CHANNEL DISPLAY Page SCAN NORMAL SCAN B AND S P ROGRAM S MH Z S MEMORY SCAN A LL -C HANNEL S G CALL SCAN PRIORITY SCAN P ROGRAMMING A P RIORITY C U SING P RIORITY S MEMORY CHANNEL LOCKOUT SCAN RESUME METHOD SELECTIVE CALL CTCSS AND DCS CTCSS S ELECTING A CTCSS F Available CTCSS Tone Frequencies CTCSS F REQUENCY ID S DCS S ELECTING A DCS C DCS C ODE ID S DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS MANUAL DIALING DTMF M DTMF TX H AUTOMATIC DIALER S TORING A DTMF N UMBER IN M C ONFIRMING S TORED DTMF N T RANSMITTING A S TORED DTMF N A DJUSTING THE DTMF T ONE T RANSMISSION S A DJUSTING THE P AUSE D DTMF LOCK AUXILIARY FUNCTIONS APO (AUTO POWER OFF) BEAT SHIFT S-METER SQUELCH S QUELCH H ANG T BEEP FUNCTION BUSY CHANNEL LOCKOUT FREQUENCY STEP SIZE DISPLAY BACKLIGHT P ERMANENT B A UTOMATIC B LOCK FUNCTION TUNE ENABLE MICROPHONE PF KEYS (K EYPAD M ODELS O Programmable Functions NARROW BAND FM OPERATION POWER-ON MESSAGE PROGRAMMABLE VFO TIME-OUT TIMER MICROPHONE CONTROL MIC LOCK OPTIONAL ACCESSORIES TROUBLESHOOTING MAINTENANCE G S S ERVICE N C RESETTING THE TRANSCEIVER I F ULL R Full Reset Method 1: VFO R VFO Reset Method 1: VFO Reset Method 2: TROUBLESHOOTING Page SPECIFICATIONS Page INDEX