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Kenwood TM-281A, TM-281E MICROPHONE PF KEYS (K EYPAD M ODELS O

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MICROPHONE PF KEYS (KEYPAD MODELS ONLY)

You can access many transceiver settings without using

transceiver keys or controls. Microphone keys PF/D,

MR/C, VFO/B, and CALL/A are programmable with

transceiver functions.

The microphone key default assignments are as follows:

Mic PF1 key [PF/D]: 1 MHz step

Mic PF2 key [MR/C]: Memory Recall

Mic PF3 key [VFO/B]: VFO Select

Mic PF4 key [CALL/A]: Call Channel Select

Note:

◆ Turn the transceiver OFF before connecting the microphone.

◆ Menu No. 34 (MCL) must be configured to “OFF” in order to

program the microphone keys.

1 Press

[F], [MENU] and turn the Tuning control to

select one of Menu No. 35 to Menu No. 38

(PF1 ~ PF4).

2 Press

[MENU] and turn the Tuning control to select

the programmable function from the list provided

below.

3 Press

[MENU] to store the setting or any other key to

cancel.

4 Press any key other than [MENU] to exit Menu Mode.

Programmable Functions

• MONI: Monitor function ON/OFF

• ENTER: Used to enter a frequency or memory channel

number with the keypad

• 1750: Transmit 1750 Hz

• VFO: Enter VFO Mode

• MR: Enter MR Mode

• CALL: Select the Call Channel

• MHZ: Enter 1 MHz Step Mode

• REV: Reverse function ON/OFF (momentary press) and Auto

Simplex Checker function ON/OFF (must be held down for 1

second to activate)

• SQL: Enter Squelch Mode

• M--V: Memory to VFO transfer

• M.IN: Store a Memory Channel

• C.IN: Store the Call Channel

• MENU: Enter Menu Mode

• SHIFT: Shift function ON/OFF

• LOW: Select transmission power

• BRIGHT: Adjust display backlight

• LOCK: Transceiver Lock function ON/OFF (must be held

down for 1 second to activate)

• TONE: Selection for Tone/ Selective Call

• STEP: Select the frequency step size

Note: Rather than entering Menu Mode and selecting PF1 ~ PF4,

you can simply press and hold the PF key you want to program, then

turn the transceiver power ON. When programming the PF keys

in this manner, select the function by turning the Tuning control or

pressing Mic [UP]/[DWN], press [MENU] to store the setting, then

press any key other than [MENU] to exit Menu Mode.

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