KENWOOD TH-255A User Manual

INSTRUCTION MANUAL

144 MHz FM TRANSCEIVER

TH-255A

THANK YOU

We are grateful you decided to purchase this transceiver.

Kenwood

always provides Amateur Radio products

Kenwood

which surprise and excite serious hobbyists. This transceiver is no exception.

Kenwood

believes that this product will satisfy your

requirements for both voice and data communications.

FEATURES

• Compact design

• Aluminum die-cast chassis

• High output power (up to 5 W operation)

• 100 memory channels or 50 channels with names

• Long operation period with a Ni-MH battery pack (optional)

WRITING CONVENTIONS FOLLOWED IN THIS MANUAL

The writing conventions described below have been followed to simplify instructions and avoid unnecessary repetition.

Instruction Action

Press

[KEY]

Press

[KEY] (1s)

Press

[F], [KEY]

Press

[KEY] + Power

. Momentarily press

. Press and hold

Press the then press function.

With the transceiver power OFF, press and hold

[KEY]

power ON.

[KEY]

key to enter Function mode,

[F]

[KEY]

while turning the transceiver

[KEY]

for 1 second or longer.

to access its secondary

NOTICES TO THE USER

Government law prohibits the operation of unlicensed radio

◆

transmitters within the territories under government control.

Illegal operation is punishable by fine and/or imprisonment.

◆

Refer service to qualified technicians only.

◆

It is important that the operator is aware of, and

Safety:

understands, hazards common to the operation of any transceiver.

PRECAUTIONS

• Do not charge the transceiver and battery pack when they are wet.

• Ensure that there are no metallic items located between the transceiver and the battery pack.

• Do not use options not specified by

• If the die-cast chassis or other transceiver part is damaged, do not touch the damaged parts.

• If a headset or headphone is connected to the transceiver, reduce the transceiver volume. Pay attention to the volume level when turning the squelch off.

• Do not place the microphone cable around your neck while near machinery that may catch the cable.

• Do not place the transceiver on unstable surfaces.

• Ensure that the end of the antenna does not touch your eyes.

• When the transceiver is used for transmission for many hours, the radiator and chassis will become hot. Do not touch these locations when replacing the battery pack.

• Do not immerse the transceiver in water.

• Always switch the transceiver power off before installing optional accessories.

Kenwood

Turn the transceiver power off in the following locations:

• In explosive atmospheres (inflammable gas, dust particles, metallic powders, grain powders, etc.).

• While taking on fuel or while parked at gasoline service stations.

• Near explosives or blasting sites.

• In aircrafts. (Any use of the transceiver must follow the instructions and regulations provided by the airline crew.)

• Where restrictions or warnings are posted regarding the use of radio devices, including but not limited to medical facilities.

• Near persons using pacemakers.

• Do not disassemble or modify the transceiver for any reason.

• Do not place the transceiver on or near airbag equipment while the vehicle is running. When the airbag inflates, the transceiver may be ejected and strike the driver or passengers.

• Do not transmit while touching the antenna terminal or if any metallic parts are exposed from the antenna covering. Transmitting at such a time may result in a high-frequency burn.

• If an abnormal odor or smoke is detected coming from the transceiver, switch the transceiver power off immediately, remove the battery pack from the transceiver, and contact your

Kenwood

• Use of the transceiver while you are driving may be against traffic laws. Please check and observe the vehicle regulations in your area.

• Do not expose the transceiver to extremely hot or cold conditions.

• Do not carry the battery pack (or battery case) with metal objects, as they may short the battery terminals.

• When operating the transceiver in areas where the air is dry, it is easy to build up an electric charge (static electricity). When using a earphone accessory in such conditions, it is possible for the transceiver to send an electric shock through the earphone and to your ear. We recommend you use only a speaker/ microphone in these conditions, to avoid electric shocks.

dealer.

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.

•

FCC REGULATIONS REGARDING THE USE OF THE EMERGENCY CHANNEL

The communications must be for the purpose of soliciting or

rendering assistance to a traveler, or for communicating in an emergency pertaining to the immediate safety of life or the immediate protection of property.

iii

CONTENTS

PREPARATION ..............................................................1

SUPPLIED ACCES SORIES ....................................................1

INSTA LLING THE OP TIONAL PB-43N NI -MH BAT TERY PACK ...............2

INSTA LLING ALK ALINE BAT TERI ES ...........................................3

INSTA LLING THE ANTEN NA ..................................................4

INSTA LLING THE BE LT CLIP .................................................4

GET TING ACQUAINTED ...................................................5

KEY S AND CONTROLS ......................................................5

DISPL AY ...................................................................8

BASIC OPERATION ....................................................... 10

SWIT CHING THE POW ER ON/OFF ........................................ 10

ADJ USTI NG THE VOLUME ................................................. 10

VOLUME ADJU STMENT OP ERAT ION SEL ECTION ............................ 10

ADJ USTI NG THE SQUELCH LEV EL ......................................... 11

SELECTIN G A FREQU ENCY ................................................. 12

DIREC T FREQUENCY ENTRY ............................................... 13

TRANSM ITT ING ........................................................... 14

SELECTIN G AN OUTPUT POWER ........................................... 14

MENU SETUP .............................................................. 15

WHAT IS A MENU?....................................................... 15

MENU ACCES S ........................................................... 15

OPER ATING THROUGH REPEATERS .................................. 18

REPE ATER ACCES S ....................................................... 19

ACT IVATIN G THE TONE FU NCTION ......................................... 20

SELECTIN G A TONE FREQU ENCY ........................................... 21

TONE FREQUENCY ID SCAN .............................................. 22

AUTO MATI C REPE ATER OFFSE T (K TYPE ONLY) ........................... 23

REVERSE FU NCT ION ...................................................... 24

AUTO MATI C SIMPLEX CHECK ER (ASC) ................................... 24

MEMORY CHANNELS .................................................... 26

NUMBE R OF MEMO RY CHA NNELS ......................................... 26

SIMPL EX & REPEAT ER OR ODD-SPLIT ME MORY CH ANNEL? .............. 27

STOR ING SIM PLE X FREQUENCI ES OR STA NDARD REPE ATER FREQUE NCIES ..28

STOR ING ODD -SPLIT RE PEAT ER FRE QUENC IES ............................ 28

CONT INUOU SLY STOR ING IN SI MPLE X OR SPLIT CH ANNE LS ................ 29

RECA LLIN G A MEMORY CHA NNEL .........................................30

CLEARING A MEMOR Y CHANNEL .......................................... 31

NAMI NG A MEMORY CHANNEL ............................................ 32

MEMOR Y -TO- VFO TRANSF ER ...........................................33

CALL CHAN NEL .......................................................... 34

RECA LLIN G THE CA LL CHANNEL .......................................... 34

REPRO GRA MMING THE CA LL CH ANNE L .................................... 34

CHANNEL DI SPLAY MODE ................................................ 35

SCAN ....................................................................... 36

SELECTIN G A SCA N RESUME MET HOD .................................... 37

BAND SCAN .............................................................. 37

PROGR AM SCAN ......................................................... 38

MEMOR Y SCAN .......................................................... 39

CALL SCAN .............................................................. 40

PRIORIT Y SCAN .......................................................... 40

MEMOR Y CHANNEL LOCKOU T ............................................. 42

SELECTIVE CALL ......................................................... 43

CONT INUOU S TONE CODED SQUEL CH SYS TEM (CTCSS) ................. 43

DIGITA L CODED SQUEL CH (DCS) ........................................46

DTMF FUNCTIONS ....................................................... 49

MANU AL DI ALIN G ........................................................ 49

DTMF TX HO LD ........................................................ 50

AUTOMATI C DIALER ......................................................50

ADJ USTI NG THE DTMF TONE TRA NSMISSION SPEED...................... 52

ADJ USTI NG THE PAUSE DUR ATION ........................................ 52

DTMF LOCK ............................................................ 53

AUXILIARY FUNCTIONS ................................................ 54

APO (AUTO POWER OFF) ...............................................54

REMA INING BATT ERY CA PACITY .......................................... 54

BATT ERY SAV ER ......................................................... 55

BEAT SH IFT .............................................................. 56

BEEP FUNCT ION .......................................................... 57

BUSY CH ANNEL LOCKOUT ................................................ 57

FREQU ENCY STEP SI ZE ................................................... 58

BACK LIGHT ............................................................. 58

LOCK FUNCT ION .......................................................... 59

SELECTOR UNLOCK ....................................................... 59

MICROPHONE KEY LOCK ................................................. 60

MICROPHONE PF KE YS (OPT IONAL) ......................................60

MONIT OR ................................................................ 62

POWER ON MESSAGE ....................................................62

PROGR AMMABLE VFO ................................................... 63

TIME-OU T TIMER ........................................................ 64

TX IN HIBI T .............................................................. 64

EMERG ENCY SIREN ....................................................... 65

MINIM UM/ MAXIMUM VOLUME ...........................................66

SPEAKER ATTE NUATION .................................................. 67

POWER ON PASSW ORD..................................................... 67

OPTIONAL ACCESSORIES .............................................. 69

MAINTENANCE ........................................................... 70

GENER AL INFORMATION .................................................. 70

SERVICE ................................................................. 70

CLEANING ................................................................ 71

MICROPROCE SSOR RESE T ................................................71

OPER ATION NOTIC ES .....................................................73

RECEI VING SIGNA LS IN CITIES ............................................ 73

TRANSM ISSIO N ........................................................... 73

INTE RNA L BEAT S ......................................................... 73

TROUBLESHOOTING ..................................................... 74

SPECIFICATIONS .........................................................77

PREPARATION

SUPPLIED ACCESSORIES

After carefully unpacking the transceiver, identify the items listed in the table below. We recommend you keep the box and packings for the shipping.

Item Part Number Quantity

Antenna T90-1018-XX 1

Belt clip J29-0623-XX 1

Screw set N99-2066-XX 1

Instruction manual B62-1981-XX 1

Antenna Belt clip Screw set

INSTALLING THE OPTIONAL PB-43N NI-MH BATTERY PACK

The battery pack is not charged at the factory, you must charge

Note:

the battery pack before using it with the transceiver.

Unlock (open) the safety catch located at the bottom of the

battery pack.

Match the guides of the battery pack with the corresponding

grooves on the upper rear of the transceiver, then firmly press the battery case to lock it in place.

Flip the safety catch into place to prevent accidentally pressing

the release latch and removing the battery pack.

To remove the battery pack, lift the safety catch, then press the

release latch to unlock the battery pack. Lift the battery pack away from the transceiver.

INSTALLING ALKALINE BATTERIES

To open the optional BT-14 battery case lid, insert your thumb or

finger into the hole on the top of the battery case, then pull the cover up.

Insert (or remove) six AA (LR6) Alkaline batteries.

• Be sure to match the battery polarities with those marked in the bottom of the battery case.

Align the two tabs at the bottom of battery case, then close the

cover until the locking tabs on top click.

To install the battery case onto (or remove it from) the

transceiver, follow steps 1 to 3 of “I 43N N

I-MH BATTERY PACK”.

Note:

Do not use Manganese batteries or Ni-Cd batteries in place of

◆

Alkaline batteries.

Always replace all batteries at the same time. Mixing old and new

◆

batteries or mixing types (such as Alkaline with zinc carbon) will reduce overall performance and could cause leakage or rupture.

Remove all batteries from the case when it is not expected to be in

◆

use for several months.

The voltage of new Alkaline batteries varies slightly, depending on

◆

the manufacturer. Thus, the high battery power indicator may not appear even though new Alkaline batteries are installed {page 54}.

To lift the battery pack safety catch, use a piece of hardened

◆

plastic or metal, such as a screwdriver, that is no more than 6 mm wide and 1 mm thick. It is imperative that you place the implement under only the lip of the safety catch so that you do not damage the release latch.

NSTALLING THE OPTIONAL PB-

INSTALLING THE ANTENNA

Screw the antenna into the connector on the top of the transceiver by holding the antenna at its base and turning it clockwise until secure.

The antenna is neither a handle, a key ring retainer, nor a

Note:

speaker/ microphone attachment point. Using the antenna in these ways may damage the antenna and degrade your transceiver’s performance.

INSTALLING THE BELT CLIP

If necessary, attach the belt clip using the two supplied 3 x 4 mm screws.

If the belt clip is not installed, its mounting location may get hot

Note:

during continuous transmission or when left sitting in a hot environment.

GETTING ACQUAINTED

KEYS AND CONTROLS

Antenna

Display

SP/MIC jack cover

Speaker

Microphone

[PTT]

Press and hold Press

[F], [PTT]

and Low {page 14}.

[MENU]

Press

[MEMU]

Press

[F], [MEMU]

OFF {page 59}

[UP](

Press

Rotate the Selector to select an operating frequency or Memory channel, change the scan direction, select a Menu, etc.

Press Press Press

Call channel {page 34}.

Press

Press Press Press

channel to the VFO (memory shift) {page 33}.

Press Press Press

Memory channel {page 28}.

)/ [DOWN]( )

[UP]/ [DOWN]

Selector

[CALL]

[CALL] [CALL] (1s)

[F], [CALL]

]

[

(POWER) to turn the transceiver power ON and OFF.

]

[

[F]

to enter MHz mode {page 12}.

[F]

[VFO]

to enter VFO mode {page 12}.

[VFO] [VFO] (1s) [F], [VFO]

[MR]

to enter Memory Channel mode {page 30}.

[MR] [MR] (1s) [F], [MR]

to transmit.

[PTT]

to toggle the transmit output power between High

to enter Menu mode {page 15}.

to turn the transceiver key lock function ON or

to adjust the Volume Level {page 10}.

to select the Call channel {page 34}.

to start Call scan {page 40}.

to store the current operating frequency to the

to start Band scan {page 37}.

to copy the current Memory channel or Call

to start Memory scan {page 39}.

to store the current operating frequency in the

[MON]

Press Press

11}.

Numeric Keypad

Press

[1]

function {pages 20, 43, 46}.

Press

[2]

21}.

Press

[3]

Press

[4]

Press

[5]

44}. Press Press

OFF {page 67}.

Press

[6]

Press

[7]

Press

[8]

Press

[9]

42}.

Press

[0]

65}.

Press

]

[

Press

[#]

Press

Selection mode {page 10}.

] to turn the Monitor function ON and OFF {page 62}.

[MON [F], [MON]

to enter Squelch Level Adjustment mode {page

to select the Signaling (Tone, CTCSS and DCS)

[F], [1]

to enter the Tone frequency setup mode {page

[F], [2]

[F], [2] (1s)

to change the Frequency step size {page 58}.

[F], [3]

to enter the DCS code setup mode {page 46}.

[F], [4] [F], [4] (1s)

to enter the CTCSS frequency setup mode {page

[F], [5]

[F], [5](1s) [5](1s)

[F], [6] [F], [7] [7] (1s) [F], [8] [F], [9]

[0] (1.5s)

[ ] [

] (1s)

to enter the Direct frequency entry mode {page 13}.

[#] [F], [#]

to start CTCSS frequency ID scan {page 44}.

to turn the Speaker Attenuation function ON and

to turn the Priority Scan ON or OFF {page 41}. to turn the Reverse function ON or OFF {page 24}.

to turn the ASC function ON or OFF {page 24}.

to select an Offset direction {page 19}.

to turn Memory Channel Lockout ON or OFF {page

to turn the Emergency siren ON or OFF {page

to illuminate the display {page 58}.

to keep the light ON continuously. {page 58}.

to enter the Volume Adjustment Operation

to start Tone frequency ID scan {page 22}.

to start DCS code ID scan {page 47}.

DISPLAY

Indicator Description

Appears while transmitting {page 14}.

Remaining battery capacity indicator (when you transmit in low power) {page 54}.

Appears when the Tone function is ON {page 20}.

Appears when the CTCSS function is ON {page 43}.

Appears when the DCS function is ON {page 46}.

Appears when the Speaker Attenuation function is ON {page 67}.

Appears when a Priority Scan function is ON {page40}.

Displays the strength of received signals. An antenna and all 3 strength bars represents strong signals while the antenna by itself (no strength bars) represents weak signals.

Displays the Memory channel and Menu number.

Displays the operating frequency, Memory channel name, and Menu.

Appears when the selected channel is registered while in Memory Input mode.

Appears when the Memory Channel Lockout function is ON {page 42}.

Indicator Description

Appears when the Key Lock function is ON {page 59}

Appears when the Offset direction is set to plus {page 19}.

Appears when the Offset direction is set to minus {page 19}.

Appears while using Low output power {page 14}.

Appears when the Reverse function is ON {page 24}.

Appears when the ASC function is ON. Blinks when the ASC function is performing an OK check {page 24}.

Appears when the [F] key is pressed.

While the Battery Saver is operating {page 55}, the “

Note:

indicator may flash when receiving a CTCSS/DCS signal which does not match the CTCSS/DCS tone/code set up in your transceiver.

”

BASIC OPERATION

SWITCHING THE POWER ON/OFF

Press

• The power on message momentarily appears on the display.

• If the transceiver power on password has been activated

To switch the transceiver OFF, press

ADJUSTING THE VOLUME

Press decrease the output level.

• If you are not receiving a signal, press and hold

unmute the speaker, then adjust the volume control to a

comfortable audio output level.

VOLUME ADJUSTMENT OPERATION SELECTION

With the setting described below, you can adjust the volume using either the

Press

• The selected display appears.

(POWER) to switch the transceiver ON.

]

[

{page 67}, you must first enter your password before you can operate the transceiver.

(POWER) again.

[

]

to increase the audio output level and press

[UP]

[UP]/ [DOWN] [F], [#]

keys or by operating the

[DOWN]

[MON]

Selector

Press

SEL:

channel number or frequency, use

UP/DN:

change the channel number or frequency, use the

to toggle the setting between “SEL” and “UP/DN”.

[F], [#]

Adjust the volume using the

Adjust the volume using

Selector [UP]/ [DOWN]

[UP]/ [DOWN]

. To change the

keys.

keys. To

Selector

ADJUSTING THE SQUELCH LEVEL

The purpose of Squelch is to mute the speaker when no signals are present. With the squelch level correctly set, you will hear sound only while actually receiving signals. The higher the selected squelch level, the stronger the signals must be to receive. The appropriate squelch level depends on the ambient RF noise conditions.

Press

[F], [MON]

• The current squelch level appears.

Rotate the

• Select the level at which the background noise is just

• The higher the level, the stronger the signals must be to

• 6 different levels can be set. 0: Minimum ~ 5: Maximum; 2 is

Press any key other than

the new setting and exit the squelch adjustment.

Selector

eliminated when no signal is present.

receive.

the default value.

(or press

[UP]/ [DOWN]

[MON], [UP]/ [DOWN]

) to adjust the level.

[

to store

]

SELECTING A FREQUENCY

VFO Mode

■

This is the basic mode for changing the operating frequency.

Rotate the

frequency and counterclockwise (or press

the frequency.

MHz Mode

■

If the desired operating frequency is far away from the current

frequency, it is quicker to use the MHz Tuning Mode. To adjust the MHz digit:

Press

Selector

[F]

• The MHz digit blinks.

clockwise (or press

) to increase the

[UP]

[DOWN]

) to decrease

Rotate the

desired MHz value.

After selecting the desired MHz value, press

the MHz Tuning Mode and return to normal VFO Mode.

Continue adjusting the frequency as necessary, using the

Selector

(or press

[UP]/ [DOWN]

) keys).

) to select the

[F]

[0]

to exit

DIRECT FREQUENCY ENTRY

In addition to rotating the

Selector

there is another way to select the frequency. When the desired frequency is far away from the current frequency, you can directly enter a frequency using the numeric keypad.

Press

[VFO]

• You must be in the VFO Mode to make the direct frequency entry.

Press

[#]

(or pressing

[UP]/ [DOWN]

Press the numeric keys (

frequency.

• Pressing

allows you to complete the MHz digits entry.

[

]

fills all remaining digits (the digits you did not

[#]

[0]

) to enter your desired

[9]

enter) with 0 and completes the entry. For example, to select 145.000 MHz, press

[1], [4]

, and

, then press

[5]

complete the entry.

• If you want to revise the MHz digits only, leaving the kHz digits as they are, press

Note:

If the entered frequency does not match the current frequency

◆

step size, the frequency is automatically rounded down to the next available frequency.

When the desired frequency cannot be entered exactly, confirm the

◆

frequency step size {page 58}.

If you rotate the

◆

the frequency, the transceiver clears the entry.

Selector

(or press

[VFO]

in place of

[UP]/ [DOWN]

[#]

) while entering

[#]

TRANSMITTING

To transmit, hold the transceiver approximately 5 cm (2 inches)

from your mouth, then press and hold microphone in your normal tone of voice.

• The “

” icon appears.

and speak into the

[PTT]

• If you press

while you are outside of the transmission

[PTT]

coverage, a high pitched error beep sounds.

When you finish speaking, release

If you continuously transmit for longer than the time specified

Note:

in Menu No. 12 (default is 10 minutes) {page 64}, the internal timeout timer generates a warning beep and the transceiver stops transmitting. In this case, release then press

again to resume transmission.

[PTT]

and let the transceiver cool down for a while,

[PTT]

SELECTING AN OUTPUT POWER

Selecting a lower transmission power is the best way to reduce battery consumption, if communication is still reliable.

Press

[F], [PTT]

• The “

• “ transmit in low power {page 54}.

to toggle between high and low (approx. 0.5 W).

” icon appears when the lower transmission power.

” shows the remaining battery capacity when you

MENU SETUP

WHAT IS A MENU?

Many functions on this transceiver are selected or configured via a software-controlled Menu rather than through the physical controls of the transceiver. Once you become familiar with the Menu system, you will appreciate its versatility. You can customize the various timings, settings, and programming functions on this transceiver to meet your needs without using many controls and switches.

MENU ACCESS

Press

[MENU]

• A brief explanation of the Menu, and the setting and Menu

No. appear on the display.

Menu No.

Function

Rotate the

desired Menu.

• As you change the Menu No., a brief explanation of each

Press

selected Menu No.

Selector

Menu appears along with its current parameter.

[MENU]

(or press

to configure the parameter of the currently

Parameter

[UP]/ [DOWN]

) to select your

Rotate the

desired parameter.

Selector

(or press

[UP]/ [DOWN]

) to select your

Press

Press any key other than

[MENU]

to store the new setting.

[MON], [UP]/ [DOWN]

]

[

Menu mode.

Menu Function List

Display Description Setting Values

No.

1 P.VFO

2 OFFSET

3 SCAN

4 M.CH

5 M.NAME Memory name 6 characters – 32

6 MDF

7 SAV Battery saver

8 APO

9 VOLUME

PASSWD

Programmable VFO

Repeater Offset Frequency

Scan resume method

Memory channel capacity

Memory name/ Frequency display

Automatic PowerOFF

Minimum volume/ Maximum volume

Power On Password

173 MHz – 63

136

0.000 ~ 29.950 MHz

TO/ CO/ SE TO 37

50/ 100

MN/ FRQ MN 33

OFF/ 0.2/ 0.4/

0.6/ 0.8/ 1.0/ 2.0/

3.0/ 4.0/ 5.0 OFF/ 30/ 60/ 90/

120/ 180 min.

0 ~ 31

6 characters – 67

Default Setting

0.600 20

50 26

1.0

30 54

Mini: 0

Max: 31

to exit

Ref.

Page

Display Description Setting Values

No.

11 EMG Emergency siren

TOT Time-out Timer 3/ 5/ 10 min 10 64

BCL

P.ON.

MSG

SEL Selector unlock ON/ OFF OFF 59

DTMF.MRDTMF memory

20 SPD DTMF TX speed FA/ SL FA 52

DT.H DTMF TX hold ON/ OFF OFF 50

22 PA DTMF pause time

23 DT.L DTMF key Lock ON/ OFF OFF 53

24 M.PF

25 ARO

Busy channel lockout

TXI TX inhibit ON/ OFF OFF 64

Power On message

BP Beep ON/ OFF ON 57

BS Beat Shift ON/ OFF OFF 56

(Automatic dialer)

Microphone PF key

Automatic Repeater Offset (K type only)

OFF/ VOL/ MED/ MAX

ON/ OFF OFF 57

6 characters – 62

Up to 16 digits

100/ 250/ 500/ 750/ 1000/ 1500 / 2000 ms

ON/ OFF OFF 60

ON/ OFF ON 23

Default Setting

OFF 65

– 50

500 52

Ref.

Page

OPERATING THROUGH REPEATERS

Repeaters are often installed and maintained by radio clubs, sometimes with the cooperation of local businesses involved in the communications industry. Compared to simplex communication, you can usually transmit over much greater distances by using a repeater. Repeaters are typically located on mountain tops or other elevated locations. They generally operate at higher ERP (Effective Radiated Power) than a typical station. This combination of elevation and high ERP allows communications over considerable distances.

144.725 MHz

TX: TX tone: RX:

88.5 Hz

145.325 MHz

144.725 MHz

TX: TX tone:

145.325 MHz

RX:

88.5 Hz

REPEATER ACCESS

Most repeaters use a receive and transmit frequency pair with a standard or non-standard offset (odd-split). In addition, some repeaters must receive a tone from the transceiver in order to gain access to the repeater. For details, consult your local repeater reference.

Selecting an Offset Direction

■

The offset direction allows your transmit frequency to be higher (+)

or lower (–) than the receive frequency.

Press

• Continually press

>> “–” >> OFF.

• The “

is selected.

If the offset transmission frequency falls outside the allowable

range, transmission is inhibited. In this case, adjust the reception frequency so that the transmission frequency is within the band limits.

Note:

you cannot change the offset direction.

to select an offset direction.

[F], [8]

to toggle the functions as follows: “+”

[F], [8]

” or “ ” icon appears, indicating which offset direction

While using an odd-split memory channel or transmitting,

+ 62 hidden pages