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Kenwood TM-281A, TM-281E AUTOMATIC REPEATER OFFSET, TRANSMITTING A 1750 Hz TONE

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AUTOMATIC REPEATER OFFSET

This function automatically selects an offset direction,

according to the frequency on the VHF band. The

transceiver is programmed for an offset direction as

shown below. To obtain an up-to-date band plan for

repeater offset direction, contact your national Amateur

Radio association.

K market version only

+−

−− +S

S

SS

144.0 145.5 146.4 147.0 147.6

145.1 146.0 146.6 147.4 148.0 MHz

S: Simplex

This complies with the standard ARRL band plan.

E market version only

S

S

S: Simplex

–

144.0 146.0 MHz145.8145.6

Note: Automatic Repeater Offset does not function when the

Reverse function is ON. However, pressing [REV] after Automatic

Repeater Offset has selected an offset (split) status, exchanges the

receive and transmit frequencies.

1 Press

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

select Menu No. 11 (ARO).

2 Press

[MENU] and turn the Tuning control to switch

the function “ON” (default) or “OFF”.

3 Press

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

cancel.

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

TRANSMITTING A 1750 Hz TONE

Call Channel default settings:

• On E market models, pressing [CALL] causes the

transceiver to transmit a 1750 Hz tone.

• On K and M market models, pressing [CALL] changes the

transceiver to the Call Channel {page 35}.

To change the setting of the CALL key:

1 Press

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

select Menu No. 19 (CK).

2 Press

[MENU] and turn the Tuning control to select

“CALL” or “1750”.

3 Press

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

cancel.

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

Some repeaters in Europe must receive continuous

signals for a certain period of time, following a 1750 Hz

tone. This transceiver is also capable of remaining in the

transmit mode for 2 seconds after transmitting the tone.

1 Press

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

select Menu No. 20 (HLD).

2 Press

[MENU] and turn the Tuning control to select

“ON” or “OFF” (default).

3 Press

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

cancel.

4 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