Alinco DR 235TMK3 User manual

Rhein Tech Laboratories, Inc. Client: Alinco, Inc.
360 Herndon Parkway Model: DR-235TMkIII
Suite 1400 Standards: FCC 15.121
Herndon, VA 20170 & IC RSS-215
http://www.rheintech.com

Report: 2006179

Appendix J: Manual

Please see the following pages.

Page 23 of 41

Contents

Warning............................................................................... 3

Before operating the transceiver...................................... 7

Introduction ........................................................................ 8

1. New and Innovative Features........................................ 9

2. Standard Accessories.................................................. 10

3. Initial Installation .......................................................... 11

For a base station set up ..................................................................... 11

For a mobile station set up .................................................................. 12

External power supply control & Power lamp functions....................... 13

Power supply voltage display function................................................. 13

4. Part Names and Functions .......................................... 14

Front Panel .......................................................................................... 14

Rear Panel........................................................................................... 15

Display ................................................................................................. 16

Microphone .......................................................................................... 17

5. Basic Operations.......................................................... 18

Turning the unit on and off................................................................... 18

Audio Volume level setting .................................................................. 18

Squelch level setting............................................................................ 18

VFO mode ........................................................................................... 19

[Change frequency by the channel step] ................................ 19

[Change frequency by 1 MHz step] ........................................ 19

Changing the channel step .................................................................. 20

REPEATER (DUPLEX) Operation....................................................... 20

CTCSS / DCS setting .......................................................................... 21

Memory Mode...................................................................................... 22

[Memory programming]........................................................... 22

[Programmable data in the memory channel] ......................... 26

CALL mode .......................................................................................... 24

To receive signals ................................................................................ 24

To transmit ........................................................................................... 25

6. Parameter Setting Mode .............................................. 26

Channel Step setting ........................................................................... 27

Scan Type............................................................................................ 27

Beep Sound ......................................................................................... 27

Time-Out-Timer.................................................................................... 28

TOT Penalty......................................................................................... 28

APO - Auto Power OFF ....................................................................... 29

Tone-Burst-Frequency ......................................................................... 29

Busy-Channel-Lock-Out ...................................................................... 29

Theft Alarm .......................................................................................... 29

1

Contents

Alphanumeric Tag ................................................................................ 30

Dimmer ................................................................................................ 30

7. Advanced Operations .................................................. 31

SCANNING FUNCTION ...................................................................... 31

[VFO Scan] ............................................................................. 31

[Memory scan] ........................................................................ 31

• Program scan ....................................................................... 32

• Tone Scan............................................................................. 32

• DCS scan ............................................................................. 33

KEY-LOCK FUNCTION ....................................................................... 33

TONE BURST...................................................................................... 33

Digital voice communication ................................................................ 34

WIDE / NARROW (Reduction of the Mic Gain/Deviation) ................... 34

AUTO-DIALER..................................................................................... 35

THEFT ALARM .................................................................................... 36

AM Mode Reception (DR235TMk only)............................................. 37

CABLE CLONE ................................................................................... 38

8. PACKET OPERATION................................................... 39

[To operate packet using EJ-41U]........................................... 39

[To operate packet using an external TNC]............................. 41

[To operate APRS®] ................................................................ 42

[SET UP] ................................................................................. 43

[APRS Operation] ................................................................... 43

9. Remote Control Operation .......................................... 44

[List of Remote Control Keys] ................................................ 44

[Entering a frequency directly] ................................................ 45

[Entry method depending on tuning step] ............................... 45

10. Maintenance / Reference ........................................... 46

Reset ................................................................................................... 46

Trouble Shooting ................................................................................. 47

11. Optional accessories ................................................. 48

12. Specifications ............................................................. 49

Appendix........................................................................... 50

TNC Commands List ........................................................................... 50

2

Warning

To prevent any hazard during operation of Alinco's radio product, in this manual and on the product you
may find symbols shown below. Please read and understand the meanings of these symbols before
starting to use the product.

Danger

Alert

Caution

This symbol is intended to alert the user to an immediate danger that may 
cause loss of life and property if the user disregards the warning.

This symbol is intended to alert the user to a possible hazard that may 
cause loss of life and property if the user disregards the warning.

This symbol is intended to alert the user a possible hazard that may cause 
loss of property or injure the user if the warning is disregarded.

Alert symbol. An explanation is given.

Warning symbol. An explanation is given.

Instruction symbol. An explanation is given.

Alert

Environment and condition of use:

Do not drive while handling the radio for your safety. It is recommended that you
check local traffic regulations regarding the use of radio equipment while driving.
Some countries prohibit the operation of transceiver while driving.

Do not use this product in close proximity to other electronics devices, especially
medical ones. It may cause interference to those devices.

Keep the radio out of the reach of children.

In case a liquid leaks from the product, do not touch it. It may damage your skin.
Rinse with plenty of cold water if the liquid contacted your skin.

Never operate this product in facilities where radio products are prohibited for use
such as aboard aircraft, in airports, in ports, within or near the operating area of
business wireless stations or their relay stations.

Use of this product may be prohibited or illegal outside of your country. Be informed
in advance when you travel.

The manufacturer declines any responsibilities against loss of life and/or property due
to a failure of this product when used to perform important tasks like life-guarding,
surveillance, and rescue.

Do not use multiple radios in very close proximity. It may cause interference and/or
damage to the product(s).

3

Warning



Risk of explosion if battery is replaced with an incorrect type.
Dispose of, or recycle used batteries according to your local regulations.

The manufacturer declines any responsibilities against loss of life and property due to
a failure of this product when used with or as a part of a device made by third parties.

Use of third party accessory may result in damage to this product. It will void our
warranty for repair.

Handling this product:

Be sure to reduce the audio output level to minimum before using an earphone or a
headset. Excessive audio may damage hearing.

Do not open the unit without permission or instruction from the manufacturer.
Unauthorized modification or repair may result in electric shock, fire and/or
malfunction.

Do not operate this product in a wet place such as shower room. It may result in
electric shock, fire and/or malfunction.

Do not place the product in a container carrying conductive materials, such as water or
metal in close proximity to the product. A short-circuit to the product may result in
electric shock, fire and/or malfunction.

Do not touch the heatsink (on/around the unit mostly found on mobile-base units) as it
may become very hot during/after the operation that may risk burn your skin.

About power-supply:

Use only appropriate, reliable power supply of correct voltage and capacity.

Do not connect cables in reverse polarity. It may result in electric shock, fire and/or
malfunction.

Do not plug multiple devices including the power-supply into a single wall outlet. It
may result in overheating and/or fire.

Do not handle a power-supply with a wet hand. It may result in electric shock.

Securely plug the power-supply to the wall outlet. Insecure installation may
result in short-circuit, electronic shock and/or fire.

Do not plug the power-supply into the wall socket if the contacts are dirty. Short­circuiting and/or overheating may result in fire, electric shock and/or damage to the
product.

Do not modify or remove fuse-assembly from the DC-cable. It may result in fire,
electric shock and/or damage to the product.

4

Warning

Cigar-lighter cable (for optional Igunition-key ON/OFF operation):

Do not use the cable at any other than the specified ones. It may result in electric
shock, fire and/or malfunction.

Do not handle cigar-cable with a wet hand. It may result in electric shock.

In case of emergency:

In case of the following situation(s), please turn off the product, switch off the source of
power, then remove or unplug the power-cord. Please contact your local dealer of this
product for service and assistance. Do not use the product until the trouble is resolved. Do
not try to troubleshoot the problem by yourself.

• When a strange sound, smoke and or strange odor comes out of the product.
• When the product is dropped or the case is broken or cracked. 
• When a liquid penetrated inside. 
• When a power-cord ( including DC-cables, AC-cables and adapters) is damaged.

For your safety, turn off then remove all related AC-lines to the product and its
accessories from the wall outlet if a thunderstorm is likely.

Turn off the unit, remove the mobile antenna from its base and keep it in the vehicle if
a thunderstorm is likely.
Please read cautions regarding the lightning-protection on page 7 also.

Maintenance

Do not open the unit and its accessories. Please consult with your local dealer of this
product for service and assistance.

CAUTION

Environment and condition of use:

Do not use the product in proximity to a TV or a radio. It may cause interference or
receive interference.

Do not install in a humid, dusty or insufficiently ventilated place. It may result in
electric shock, fire and/or malfunction.

Do not install in an unstable or vibrating position. It may result in electric shock, fire
and/or malfunction when/if the product falls to the ground.

Do not install the product in proximity to a source of heat and humidity such as a
heater or a stove. Avoid placing the unit in direct sunlight.

Do not modify, dismantle, incinerate, or immerse the batteries.
Please check your local regulations for details on recycling option or disposal of the
batteries in your area.

5

Warning

About transceiver

Do not connect devices other than specified ones to the jacks and ports on the product.
It may result in damage to the devices.

Turn off and remove the power-source (AC cable, DC cable, battery, cigar-cable,
charger adapter etc) from the product when the product is not in use for extended
period of time or in case of maintenance.

Never pull the cord alone when you unplug AC cable from the wall outlet.

Use a clean, dry cloth to wipe off dirt and condensation from the surface of the
product. Never use thinner or benzene for cleaning.

About power-supply

Use only reliable power supply of specific DC output range and be mindful of the
polarity of the cables and DC jack.

Always turn off the power supply when connecting or disconnecting the cables.

When using an external antenna, make sure that the antenna ground is not common
with the ground of the power supply.

European users: When a transceiver is powered from an external DC power source
(adapter, power supply, cigar-plug etc), make sure that this power supply has approval
to the level of IEC/EN 60950-1.

6

Before operating the transceiver

Attention

• Do not remove the case or touch the interior components.
Tampering can cause equipment trouble.

•Do not use or keep the transceiver where it is exposed to direct sunlight, dusty
places, or near sources of heat.

•Keep the transceiver away from TV's or other equipment
when it interferes with reception.

•When transmitting for long periods of time at high power,
the transceiver might overheat.

•Turn the power off immediately if the transceiver emits
smoke or strange odors. Ensure the transceiver is safe,
then bring it to the nearest Alinco service center.

•An operator's license is required for this device.

Notice to California resident users

The product that comes with this manual is free from dangerous material such as lead
and cadmium as per RoHS order of EU.


The transceiver has no protection against lightning.

The user is responsible for providing adequate protection if he uses the device at
home and installs the antenna outdoor. Be aware that any outdoor antenna creates a
direct path for lighting current (more than 10kA) to the transceiver. This path exists
whether the device is turned ON or OFF.
Any vehicle does not present a safe environment during lightning. This environment
becomes much moe dangerous if an outdoor antenna is installed on the car. Move the
antenna and its cable into the car at the first sight of forthcoming thunderstorm and
lightning.


7

Introduction

Thank you very much for purchasing this excellent Alinco transceiver. Our products
are ranked among the finest in the world. This radio has been manufactured with state
of the art technology and it has been tested carefully at our factory. It is designed to
operate to your satisfaction for many years under normal use.

PLEASE READ THIS MANUAL COMPLETELY TO LEARN ALL THE
FUNCTIONS THE PRODUCT OFFERS. WE MADE EVERY ATTEMPT TO
WRITE THIS MANUAL TO BE AS COMPREHENSIVE AND EASY TO
UNDERSTAND AS POSSIBLE. IT IS IMPORTANT TO NOTE THAT SOME OF
THE OPERATIONS MAY BE EXPLAINED IN RELATION TO INFORMATION IN
PREVIOUS CHAPTERS. BY READING JUST ONE PART OF THE MANUAL,
YOU RISK NOT UNDERSTANDING THE COMPLETE EXPLANATION OF THE
FUNCTION.

8

1. New and Innovative Features



Your new radio features some of the most advanced functions and reliable engineering
available anywhere. The ALINCO design philosophy is focused on developing innova­tive usable features, including the following:

•Three different styles of display are available on a large LCD panel including fre­quency, channel number or 7 digit alphanumeric label.
The dimmer (bright/dim) makes it easier to read the display at night. (T/E models only)

•Simple, clean layout of keys and knobs ensure convenient operation.

• High-quality materials are used throughout the product and a huge heat sink around the
chassis ensures stable and durable operation.

•Conventional or narrow FM mode can be selected.

• AM Air-band reception capability. (available on DR135TMk / 235TMk only)

• 100 fully programmable memory channels with alphanumeric memory channel labels.

•A DATA port is located on the front panel for easy access to external accessory connec­tions. A DSUB9 port is available on the rear to connect a PC for 1200/9600bps packet
operation. (T/E models only)

• CTCSS, DCS and 4 different Tone-Bursts are standard for selective calling and re­peater access worldwide.

• The Theft Alarm feature gives an extra measure of security for mobile installation.

• The transceiver has a cable clone capability.

• The optional EJ-41U board is available for data communications such as APRS® or
packet, without an external TNC. (T/E models only)

DR-135/235/435MkIII series / feature comparison chart

Feature

DR-135TMkIII
DR-235TMkIII
DR-435TMkIII

DR-135/435EMkIII

DR-135FXE
DR-435FXE

Feature

DR-135/435TMkIII

DR-235TMkIII

DR-135/435EMkIII

DR-135/435FXE

* The specifications on page49 are valid only within the amateur radio frequencies.



Microphone

EMS-57 DTMF
EMS-57 DTMF
EMS-57 DTMF

EMS-53 Plain
EMS-53 Plain
EMS-53 Plain

TNC/Packet

operation

Optional EJ-41U
Optional EJ-41U
Optional EJ-41U

N/A

TX frequency

USA Amateur
USA Amateur

USA Amateur
European Amateur
European Amateur
European Amateur

Digital V oice

Modem

Optional EJ-47U
Optional EJ-47U
Optional EJ-47U

N/A

RX frequency*

136-174MHz + airband in AM
216-280MHz (include AM)

350-511.995MHz
European Amateur
European Amateur
European Amateur

Car-key ON/OFF port

Standard
Standard
Standard

N/A

Freq. Stability

+/-2.5ppm
+/-2.5ppm
+/-2.5ppm
+/-2.5ppm

+/-5ppm

+/-2.5ppm

LCD

brightness

Bright/Dim
Bright/Dim
Bright/Dim

N/A

DATA port(DSUB9)

Standard
Standard
Standard
Standard

N/A
N/A

DC voltage

display

Standard
Standard
Standard

N/A

9

2. Standard Accessories

Carefully unpack to make sure the following items are found in the package in addition to this manual:

•Transceiver

• DC power cable with fuse holder (UA0038)

•Alarm cable A (with wire) (UX1259)
(T/E models only)

•

Alarm cable B (extension use) (UX1260)

(T/E models only)

• Microphone EMS-53 or EMS-57 (with
DTMF keypad)

• Mobile mounting bracket. (FM0078Z)

• Hardware kit for bracket

Black screws (M4*8mm)
4pcs. (AE0012)

Screws (M5*20mm)
4pcs. (AA0013)


Tapping screws
(M5*20mm) 4pcs. (AJ0003)

Washer (AZ0010) 
S-washer (AZ0009)

Small (spanner) wrench.
(FM0079)

•Theft Alarm stickers 2pcs. (PR0454)

Hexagonal nut (M5) 4pcs.
(AN0002)

Spare fuses (a pair)
2pcs. (EF0005)

(T/E models only)

• Instruction manual (PS0513B)

(15A)

The standard accessories may vary slightly depending on the version you have purchased. Please contact

your local authorized Alinco dealer should you have any questions. ALINCO and authorized dealers are

not responsible for any typographical errors there may be in this manual. Standard accessories may
change without notice.

Warranty Policy:

Please refer to any enclosed warranty information or contact your authorized Alinco dealer / distributor
for the warranty policy before purchase.

10

3. Initial Installation

Connect the microphone to the front panel of the transceiver.

Connect antenna port to a 50 ohm antenna that is tuned to the band, using good quality 50 ohm
coaxial cable.

Microphone

Antenna

External speaker

(if used)

(T/E models only)

rear panel

For a base station set up

The Transceiver requires a 12-13.8VDC negative grounded power source.
Use a regulated power supply capable of providing continuous current of 12A or more.
Power supplies that do not meet those specifications may cause malfunction and/or damage to the
radio and will void the warranty. Alinco offers excellent communication-grade power supplies as
optional accessories. Please contact your local authorized Alinco dealer.

*

DC
power supply

Black lead

2

Red lead

DC power cable

1

CAUTION: The body (heatsink) of this product may become very hot during/after the operation.

Never touch the unit until it cools down.

* When a transceiver is powered from an external DC power source (adapter, power supply, cigar­plug etc), make sure that this power supply has approval to the level of IEC/EN 60950-1.

11

3. Initial Installation

For a mobile station set up

Location

The transceiver may be installed in any position in your car, where the controls and microphone are easily accessible and it
does not interfere with the safe operation of the vehicle or the performance of the set. If your vehicle is equipped with air
bags, be certain your radio will not interfere with their deployment. If you are uncertain about where to mount the unit,
contact your vehicle's manufacturer. While installing the unit in less ventilated place, please be aware that DC cables never
touch the heatsink of the unit. The heatsink may become excessively hot if proper ventilation is not availble while transmit­ting at, or similar to 100% duty-cycle, therefore there is risk of melting insulation of the DC cables and the consequent
short-circuiting of them.

Installing a Mobile Antenna

Screw-fixed
base

Magnet base

Use a 50 ohm coaxial cable to connect the antenna. Mobile antennas require an appropriate mount­ing base for proper installation and operation. For more information, see the documentation for
your antenna.

CAUTION: After installing your antenna, ensure that you have the best possible SWR reading.

High RF environments can cause severe damage to your unit. Ensure that you are not
in a high RF environment when operating the transceiver.

Installing the Transceiver

See the figure on the below.

Car body

Washer (M5)

Tapping screw
(M5 x 20 mm)

Mounting bracket

CAUTION: RF Hazard Warning

The electro-magnetic (radio Frequency) exposure level of this device may exceed the
European standards of the hazard level when transmitting at the high-power setting
while connected to a unity gain antenna at a distance of 63cm or less from the opera­tor. Furthermore, the hazardous RF exposure level depends on the conditions of the
combination of the antenna gain, distance from the operator, output setting and instal­lation environment, therefore the operator may be exposed to stronger RF even at a
distance of more than 63cm. For safety purpose, it is recommended that the antenna
be installed outside of, and as far as possible fr om, the operator's area. Av oid using an
excessively high-gained antenna in case the distance between the operator and the
antenna is very limited. Always use the minim um necessary output po wer f or comm u­nications.

12

3. Initial Installation

External power supply control & power lamp functions

ACC terminal

Ext. Power jack

DC cable

Be sure the vehicle has a negative-ground, 12VDC electric system before installation. Connect the
provided DC cable directly to the battery as shown below to minimize any possible ignition noise.
Be sure the vehicle has a large capacity battery as the use of the transceiver may overload the
electric system of the vehicle.
If the ignition-key on/off feature is desired (optional feature), use the optional EDC-37 (For direct
connection to the circuit on the vehicle) or EDC-36 (for a Cigar-Plug connection) cable. Connect
one of the cables between the ACC terminal or a Cigar-Plug that operates with the vehicle ignition
or ACC switch on the vehicle and EXT POWER jack on the rear side of the unit. (Note: In many
cars, the cigar-lighter plug is always powered. If this is the case, you cannot use it for the ignition
key on/off function.) If this option is selected, the unit can be turned on/off either manually or
automatically in accordance with the ignition key position:

Cigar-Plug connection

Battery

1. When the ignition key is turned to ACC or ON (Start) position with the radio turned

off, the power switch illuminates. The illumination will be turned off when the igni­tion key is turned to the off position. To turn on the unit, press the power switch
manually while it is illuminated (while ignition key is at ACC or ON position).

2. When the ignition key is turned to ACC or ON position with the radio's power switch

on, the unit turns on automatically and the power switch will be lit. Turn the ignition
key to OFF position or manually turn the power switch off to shut down the radio.

The power consumption when using the additional cable is 5mA.
For operation without this option, use the power switch to turn the unit on/off.

Power supply voltage display function

After connecting the transceiver to the power supply, the supply voltage can be confirmed by
pressing the SQL key together with the FUNC key. The supply voltage to the transceiver is then
seen on the display.
The transceiver will return to its normal operation when the power is switched OFF.

The display immediately changes as the voltage supply changes.
It also displays voltage during transmission. (T/E models only)

IMPORTANT:

The range of the displayed voltage is only from 7V - 16VDC. Because the displa y ed v alue
is approximate, please use a voltmeter when a more precise reading is desired.

13

4. Part Names and Functions

Front Panel

10

11

12

4 5

6

8

7

2

9

3

•Primary Functions

No.

KeyFunction

1PWR Power turns ON / OFF whenever the key is pressed.
2Volume knob Adjusts the AF audio level.
3Dial
4 FUNC/SET Sets the function mode to access additional settings.
5 V/M/MW Switches between VFO mode and memory mode.
6 MHZ/SHIFT Changes the frequency in 1 MHz steps.
7

TS/DCS/LOCK
8 CALL/H/L Switches to CALL mode.
9 SQL/D Sets the squelch level

10

DA TA Terminal

11

TX Light indicator

12

Mic. Connector

Changes the frequency, memory channel and scan direction.

Sets the tone squelch and DCS setting.

Used in clone and theft alarm functions.

Lights during transmission.

Connection port for supplied microphone.

1

14

•Functions which can be activated while F appears, after
pressing the FUCN Key.

No.

KeyFunction

4 FUNC/SET
5 V/M/MW Programs the data in to memory channel.
6 MHZ/SHIFT Sets the shift direction and the offset frequency.
7

TSDCS/LOCK
8 CALL/H/L Switches between HI, MID, and LOW power transmission.
9 SQL/D Accesses the packet communication mode. (T/E models only)

Confirms selection of other functions and exits the function mode.

Sets the key lock function.

AM reception(DR-235TMk only)

4. Part Name of Functions

•

Functions that can be activated while pressing the FUNC Ke y

No.

KeyFunction

1PWR Reset to factory default settings.
5 V/M/MW Erase the memory.
6 MHZ/SHIFT Switches to wide / narrow mode.
7

TSDCS/LOCK
8 CALL/H/L Accesses the clone function mode.
9 SQL/D Accesses the power supply voltage indication mode. (T/E

Sets the auto dialer.

models only)

• Functions that require continuous pressing to be activated.

No.

KeyFunction

4 FUNC/SET When pressed for 2 seconds, accesses the set mode.
6 MHZ/SHIFT When pressed, within 1 second the scan start.
9 SQL/D

When pressed, within 1 second the monitor function is on.

Rear Panel

21 4

No.

KeyFunction

1 Ext. Power jack Terminal for connecting optional EDC-37 for

2 External Speaker Port For optional external speaker
3 DSUB-9 Connector Terminal where external TNC may be con-

4Antenna Connector Connection for 50 ohm coaxial cable and

3

use with ignition key on/off function. (T/E
models only)

nected for packet use. With optional EJ-41U,
connects internal TNC to the computer. (T/E
models only)

antenna.

15

4. Part Names and Functions

Display

12131416 15171819

11

10

1
2

3

No.

KeyFunction

1

SQL Appears when setting the squelch level.

2

M Appears when in memory mode.
3
4

.Decimal point
5

.Decimal point
6

.Decimal point
7
8

9 S-meter

Indicates the memory channel number in memory mode.

Appears when setting the theft alarm function.

Appears when setting the skip level.

Indicates the decimal point of frequency and the scanning function.

Indicates the frequency or memory name.

Appears when a signal is being received.

Indicates the relative signal strength level of transmission / reception.

5 6 7

4

9

8

16

10 Appears when in packet mode and digital voice mode.
11 Appears when setting the key lock.
12 DCS Appears when setting the DCS.
13 Appears when setting the tone squelch.
14 +- Appears when setting the shift.
15 A Appears during AM reception.(135TMk /235TMk only)
16 Nar Appears when in narrow band reception mode.
17 Lo Appears when transmission power is set to LOW.
18 Mi Appears when transmission power is set to MID.
19 Appears when FUNC Key is pressed.

Microphone

4. Part Name of Functions

T version E version

No.

KeyFunction

1UP
2 DOWN

Increase the frequency, memory channel number, or setting value.

Decrease the frequency, memory channel number, or setting value.

3 PTT Press the PTT(Push-To-Talk)key to transmit.
4 DTMF DTMF tone keys

DTMF / REMOTE

5

Set to DTMF when you don’t want to operate remote con-

trol functions. So that DTMF keys do not function except

Switch

during transmit to send DTMF codes manually.

6 Lock Switch Locks out the UP and DOWN keys.
7MIC Speak here during transmission.

Mic. Connector Diagram (While looking in the fr ont view of the con­nector)

GND

MIC
PTT

DOWN

1

7

2

3

6

8

5

4

MIC GND
Remote control
DC 5V

UP

17

5. Basic Operations

PWR key

Turning the unit on and off

Press the power switch or turn the ignition key to ACC or ON
position according to the option selected during installation.
Press the power switch again or turn the ignition key to OFF
position to turn off.

Audio Volume level setting

Rotate the VOL knob clockwise to increase the audio level,
counterclockwise to decrease. Set it at the desired level.

Squelch level setting

A squelch eliminates white-noise (the background noise when
a signal is not received).
Higher level settings will keep the squelch “closed” more
tightly for quieter monitoring, but weak signals will not be
heard. Lower settings allow weaker signals to “open” the
squelch but noise may also cause it to open.

1. Press SQL key. SQL icon appears on the dis-

play and the squelch level will be shown at the
position where the memory number is dis­played. 21 levels, between 0 and 20, are avail­able. “0” is the lowest setting.

2. By rotating the main dial or by using the UP/

DOWN keys on the microphone, adjust the
squelch to the desired level. To return to nor­mal use, press PTT or any key on the front
panel; or if there are no operations within 5
seconds, the unit will store the setting and will
return to its original status.

Minimum

volume

Squelch level

Maximum

VOL knob

volume

The new squelch level will be stored in the CPU until another
adjustment is done.

IMPORTANT: All figures showing the frequencies and values in this manual are based on DR135(144MHz

band).

18

VFO mode

VFO tuning is set as a default mode at the factory. VFO (vari­able frequency oscillator) allows you to change the frequency
in accordance with the selected channel step as you rotate the
main dial or by using the UP/DOWN keys on the microphone.
VFO mode is also used to program the data to be stored in the
memory channels or to change the parameter settings of the
transceiver.

1. Identify the current mode by checking the dis-

play. If “M” or “C” icon is NOT displayed on
it, the unit is already in the VFO mode.

2. Otherwise press “V/M” keys until those icons

are gone.

[Change frequency by the channel step]

Rotate the main dial clockwise to increase the frequency, coun­terclockwise to decrease. The UP/DOWN keys on the micro­phone act in the same way.

Frequency

decrease

5. Basic Operation

VFO mode

Frequency

increase

[Change frequency by 1 MHz step]

This will enable a quick change of frequency in 1 MHz steps:

1. Press MHz key. The digits after 100 kHz will

disappear from the display.

2. Follow the same sequence as above to change

the value.

Dial

19

5. Basic Operation

Changing the channel step

1. Be sure the unit is in VFO mode. Refer to P.26

to enter into the Parameter Setting(SET) mode.

2. Select the channel step setting (P.26) using the

tuning knob. The current channel step will be
displayed as below.

3. Press PTT or any one of the keys except SQL

on the front panel to enter the desired step into
the transceiver’s memory . The display will then
return to the original status.

Please note that settings below 10 kHz may be automatically
corrected according to the selected step.

REPEATER (DUPLEX) Operation

Shift Direction and Offset frequency setting

Conventional repeaters are operated in the DUPLEX mode.
It receives an incoming signal (UP-LINK) on one frequency
and re-transmits on another (DOWN-LINK). The difference
between these two frequencies is called the offset frequency.
If the UP-LINK frequency is higher than the DOWN-LINK
frequency, the direction is positive, and if it is lower, the shift
direction is negative. The offset is variable between 0 to 99.995
MHz on this unit. If the offset value is set beyond the TX
range, OFF appears on the display when PTT is pressed.

Display for channel step

at-600 kHz

*The default value of DR235TMk is

1.600(1.6MHz) in the negative direc­tion.

*The default value of DR435Mk /FXE

is 5.000(5MHz) in the negative direc­tion.

Press the F key. While the F icon stays on the display, press
MHz key. The display shows the current status of shift direc­tion and offset frequency. The default value of DR135Mk /
FXE is 0.60 MHz (600 kHz) in the negative direction. Press
MHz key until the desired offset direction is set. If SIMPLEX
mode (without changing transmit and receive frequency) is de­sired, select the position where both - and + icons disappeared.

1. Rotate the dial or use UP/DOWN keys on the microphone to change the shift fre-

quency. It changes in accordance with the channel step setting.

2. In this mode, if the F key is pressed again, the offset frequency can be changed in

1 MHz steps for faster setting.

3. Press PTT or any key except F or MHz on the front panel to return to the original

status.

20

5. Basic Operation

NOTE: It is practical to use the memory mode to operate repeaters by programming the shift and offset settings

into the memory channels (P.22).

CTCSS / DCS setting

Many repeaters require a CTCSS tone or a DCS code encode setting as a “key” to access the
system, so-called “selective-calling”. Sometimes, CTCSS or DCS decode features are used on the
output of a repeater so they can be used as a squelch. In this mode, regardless of the main squelch
status, the audio can be heard ONLY when the matching tone/code signal is received. The combi­nation of CTCSS squelch and DCS function is not available; only one or the other may be used for
a given memory channel.

1. Press TS/DCS key. The current setting will be

displayed with T/SQ/DCS icons and relative
frequency/code. Press the same key to select

T

88.5
The original status

T/SQ

88.5

DCS

023

T/SQ/DCS setting.

2. The numbers (such as 88.5) represent the CTCSS frequency in Hz. When it is dis-

played with the T icon only, the unit transmits the sub-audible tone while the PTT is
pressed (encode) and the repeater access is enabled (assuming the repeater is using

88.5).

3. Press the same key again so that the SQ icon shows up on the display. This is the

CTCSS decode frequency. This enables CTCSS squelch (or Tone Squelch, TSQ).

4. Press it again so that the 3-digit number and DCS icon is displayed. This is the DCS

code, and it enables DCS encoding and decoding.

For 2 - 4, rotate the main dial or press the UP/DOWN keys to change tone or code. Press any key
(Except TS/DCS, UP/DOWN keys) to enter the setting and return to original status. The T/SQ/
DCS icon will remain on the display to show the current status. To exit, simply use the TS/DCS key
and press it until the relative status icon T/SQ/DCS disappears.

The CTCSS encoding and decoding frequencies may be set differently. The encode setting fre­quency automatically relates to the decode setting, but decode setting does not affect encode. The
standard set of 39 different CTCSS tones are available as shown on the chart below. DCS encode/
decode cannot be separated and are selectable from 104 codes as shown below.

67.0 69.3 71.9 74.4 77.0 79.7

82.5 85.4 88.5 91.5 94.8 97.4

100.0 103.5 107.2 110.9 114.8 118.8

123.0 127.3 131.8 136.5 141.3 146.2

151.4 156.7 162.2 167.9 173.8 179.9

186.2 192.8 203.5 210.7 218.1 225.7

233.6 241.8 250.3

CTCSS Tone Frequency(Hz)

023 025 026 031 032 036 043 047 051 053 054
065 071 072 073 074 114 115 116 122 125 131
132 134 143 145 152 155 156 162 165 172 174
205 212 223 225 226 243 244 245 246 251 252
255 261 263 265 266 271 274 306 311 315 325
331 332 343 346 351 356 364 365 371 411 412
413 423 431 432 445 446 452 454 455 462 464
465 466 503 506 516 523 526 532 546 565 606
612 624 627 631 632 654 662 664 703 712 723
731 732 734 743 754

DCS Codes

21

5. Basic Operation

NOTE: Depending on the deviation level of the incoming DCS coded-signal, your radio may not open the DCS

squelch. If this occurs, return to DCS setting mode and press the CALL key. A decimal point appears on
the 10 MHz order; then set the desired code. This setting can also be stored in a memory channel.

Memory Mode

The memory mode on this transceiver provides up to 100 channels (0-99), 1 call (quick recall ch)
and a pair of program-scan “edge memory” channels for quick, easy access to the preprogrammed
frequencies with different parameter settings.

1. Press V/M key. M icon appears on the display

to indicate that the unit is in the memory mode.
Repeat to switch the mode between VFO and
memory.

2. In memory mode, rotate the main dial or press

UP/DOWN keys to change the memory chan­nel number.

Memory channel

Memory mode

[Memory programming]

1. Return to VFO mode by pressing V/M key. Re-

ferring to the list below for the programmable
parameters, program in the VFO mode to the
desired frequency and settings to be stored later
in the memory.

2. When all the settings are complete, press FUNC

key . The F, and M icons appear and a memory
channel number will be indicated on the
display.

3. Rotate the main dial or press the UP/DOWN

keys to select the desired memory channel num­ber into which the current VFO settings will be
copied. An empty channel is shown with a flash­ing M icon. It may be a good practice to “allo­cate” memory channels in order, such as 0-9
for local repeaters, 10-19 local simplex, 20-49
repeaters within the area, 50-79 for repeater re­serve, 80-98 simplex reserve. It makes refer­ences easier for the operation and future modi­fications of the memory channels.

during the unregistered channel

22

4. While F icon is on the display, press MW key.

The VFO settings are copied to the memory
channel and a beep will sound. The memory
channel can be over-written if a previously pro­grammed channel is selected (the memory
channels shown with a stable M icon).

5. To program the CALL channel (quick recall)

select the channel shown with CH-C on the dis­play. Save Ch99 to store the setting used for
the Alarm operation, which will be explained
later. Use PL and PH for Program scan setting,
which will be explained in the advanced op­erations chapter.

6. To delete a programmed channel, select it in

memory mode, press FUNC key then press the
MW key while F icon is on. The memory is de­leted and a beep sounds. The M icon starts flash­ing showing that this channel is now empty.

5. Basic Operation

7. To undo delete, repeat 6. However, the Undo

function becomes impossible once the channel
or the mode is changed.

[Programmable data in the memory channel]

Some features will be explained later, so please read this instruction manual thoroughly prior to
programming memories.
Memory channels including 0 - 99 and CALL can store following:

• Frequency

• Shift frequency

• Shift direction

• CTCSS tone both encode and decode

• Tone Squelch setting

• DCS code both encode and decode

• DCS squelch setting

• Scan skip channel

• Busy Channel Lock Out setting

• Priority monitoring frequency (PC programming required)

• Normal/Narrow FM width

• AM air-band receive (available on DR135TMk /235TMk only)

NOTE: Only the frequency can be stored in PH and PL channels to determine the edges of the program

scan range.

23

5. Basic Operation

CALL mode

This is a memory mode that allows the transceiver to quickly recall the assigned memory channel
by simply pressing the CALL key, regardless of the current status of the unit.

1. Press CALL key. The C icon appears on the

display and the transceiver enters the CALL
mode. In this mode, the main dial or the UP/
DOWN keys cannot change the frequency or
memory channels.

2. Press CALL key again or press V/M key to exit

CALL mode.

3. No scan functions are available in CALL mode.

To store a desired setting in the CALL channel, follow the memory mode programming instruc­tions and assign your selected settings to memory channel C. The call channel can be modified but
cannot be eliminated or hidden.

*Please refer to P.46 for default CALL

frequency of DR235TMk /
DR435Mk /FXE.

To receive signals

• Be sure to have the unit connected to the appropriate antenna, powered on, set the audio volume and
squelch level properly.

• Select the desired receiving frequency or browse frequencies to listen to ongoing communications. The
S-meter shows relative signal strength between BUSY and FULL when the transceiver detects an incoming
signal.

• If the S-meter indicates an incoming signal but nothing is heard from a speaker, check audio level, squelch
level, and CTCSS/DCS decoding status, which are explained elsewhere in this manual.

•A Monitor function is available to receive weaker signals. Press and hold SQL key for more than 1 second.
Regardless of the level setting of the squelch, it will be opened and the BUSY icon turns on the display.
Press any key on the front panel to exit.

24

To transmit

1. Select the desired frequency. Be sure that you

2. Select the output power. Press FUNC key and

3. Default setting is High power. Press the PTT

are authorized to operate on the selected fre­quency. Check the system and monitor the fre-

quency to make sure that you are not going to
disturb any ongoing communications.

then press CALL key while F icon is on the
display. As the CALL key is pressed, the out­put power changes among 3 levels. The Lo icon
stands for LOW power setting, Mi for ME­DIUM power. When the transceiver is set at
HIGH power, no icon will appear. The output
power level cannot be changed during trans­mission.

key on the microphone to transmit, release it to
receive. During transmission, the relative power
output is shown on the RF meter as:
LOW power = 2 segments
MID power = 3 segments
HIGH power = 5 segments.

5. Basic Operation

LOW power

MID power

HIGH power

4. If operating from a vehicle, do not transmit for

extended periods without running the engine,
to avoid battery drainage. Check the battery
voltage often. The lights, windshield wipers,
stereo system, air-conditioner, defogger and
other accessories drain the battery’s power con­siderably. When those accessories are turned
on, reduce the output power or turn off one or
more accessories to avoid the battery becom­ing overloaded. Watch the road when driv-

ing. Check local regulations that may per­tain to the use of a transceiver when driv­ing.

Overheating Protection

In case the internal temperature is raised over approximately 80ºC(176F), the power is automatically reduced by
20% until the unit is cooled down. The display does not show any warning during this status.

25

6. Parameter Setting Mode

IMPORTANT: Please read the following pages thoroughly prior to the change of any parameters.

THE PARAMETERS CANNOT BE SET WITHOUT ENTERING THE SET MODE.

By entering the Parameter Setting mode, some of the radio’s operating parameters can be changed
to suit your application. The following is the Selectable Parameters’ Menu.

Note: The Alphanumeric Channel Tag setting will not appear in the menu until memories have been programmed

first!

To use the Parameter Setting mode

1. Press FUNC key for more than 2 seconds to

enter the Parameter Setting mode.
Use SQL key or UP/DOWN keys to select
menu.

2. Rotate the main dial to select the desired set-

ting.

3. Press SQL or UP/DOWN keys again to enter

the selected setting into the radio’s memory . The
transceiver is now ready for additional Param­eter adjustments.

Default setting

4. Press any key OTHER than SQL/UP/DOWN

to exit the Parameter mode. The only excep­tion is the Channel Tag setting which accepts
only PTT, FUNC, MHz and TS/DCS keys to
exit.

Details of the features in Menu

Please refer to “Parameter Setting Mode” for setting op­erations. The operation procedures of some of the fea­tures are explained later in detail.

Parameters Setting Mode

STP-5 Channel Step setting

TIMER Scan type (time scan/busy scan)
BEEP-ON Beep sound ON/OFF
TOT-OFF Time-Out-Timer ON/OFF

TP-OFF TOT penalty ON/OFF

APO-OFF Auto-Power-Off ON/OFF

TB-1750 Tone-Burst Frequency setting
BCLO-OF Busy-Channel-Lock-Out ON/OFF
SCR-OFF Theft Alarm ON/OFF

Alphanumeric Channel Tag setting

A

LAMP-H

Dimmer (LCD illumination) High/Low

26

6. Parameters Setting Mode

Channel Step setting

This is to select the channel step to be used in the VFO mode.
Refer to the chart below for the relation of the actual step
frequency and how it is displayed.

Note: Be sure to set the kHz order of the frequency at even-number such as .000, prior to change this parameter

in VFO mode.

Scan Type

This is to select the scan resume condition. TIMER setting
allows the radio to resume scanning after 5 seconds, regard­less of the signal receiving status. BUSY setting resumes scan­ning when the received signal is gone. The scan mode is ex­plained later.

Beep Sound

BEEP-ON setting enables a beep that sounds after certain keys
are touched and/or setting is done. BEEP-OF shows that the
beep function is off.

27

6. Parameters Setting Mode

Time-Out-Timer

The TOT feature is popular in repeater systems. It prohibits the users from transmitting on the
repeater after a certain period of time has elapsed. By setting this function and activating it accord­ing to the repeaters’ requirement, the radio alerts the user by a beep 5 seconds prior to time-out.
When the time is expired, transmitting stops and the transceiver automatically returns to receiving
mode. This avoids the repeater going into its TOT mode. Until the PTT is released once and pressed
again, the transceiver will not transmit.

1. In this Menu the default display shows TOT-

OFF.

2. Rotate the main dial to select time-out time.

The display should change as shown. The num­ber followed by TOT is the time-out time in
seconds.

3. The TOT feature is selectable up to 450 sec-

onds (7.5 minutes).

during the setting time of 60 seconds

TOT Penalty

When the transmission is shut down in the TOT mode, this function prohibits another transmission
for a selected time period.

1. During the TOT penalty period, the beep sounds

when the PTT is pressed but the radio does not
transmit.

2. If the PTT is continuously pressed over both

TOT and the TOT penalty period, this function
will be automatically cancelled.

3. Default setting is TP-OFF . Rotate the main dial

to select the penalty time, up to 15 seconds.

during the setting time of 5 seconds

28

6. Parameters Setting Mode

APO-Auto Power OFF

This feature will automatically shut off the transceiver. It is useful for mobile operation to avoid
draining the car battery. If there is no activity or use of the radio, it will turn off automatically after
30 minutes followed by a beep sound.

1. Default is APO-OFF.

2. Rotate dial to select APO-ON to activate the

function.

during the ON setting

Tone-Burst Frequency

This is to access Tone-Burst repeaters which require a certain pitch of audible tone to activate
“sleeping” repeaters. Usually, a repeater system does not require the tone once the repeater is
activated.

1. The default is TB-1750, which is 1750 Hz tone.

2. It is selectable from 1750, 2100, 1000, 1450 Hz.

during the 1750 Hz frequency

See ADVANCED OPERATION chapter (P.33) for operation.

Busy-Channel-Lock-Out

This function prohibits transmission as long as there is a signal on the receiving frequency.
The default is BCLO-OF, which is the off position. By activating this function, the radio transmits
only when:

1. No signal is received (BUSY icon is gone) on

the receiving frequency.

2. Tone-squelch is opened by the corresponding

CTCSS tone of the receiving signal.

3. As above, with DCS code.

Otherwise a beep sounds but the unit does not transmit even
when the PTT is pressed.

during the ON setting

Theft Alarm

Default is SCR-OFF. Select ON or DLY to activate the func­tion. When the SCR-ON is selected, 100 MHz and 100 kHz
order decimal points will appear on the display.
The operation of this transceiver feature is explained later
(P.36).

lights up lights up

29

6. Parameters Setting Mode

Alphanumeric Tag

The memory channels stored in the memory-mode can be displayed with an alphanumeric tag
instead of the default frequency display. Program the memory channel first.
There are 67 characters available including A-Z, 0-9.

1. Enter the set mode while the unit is in memory

mode.

2. Select alphanumeric tag setting by rotating the

main dial or pressing the UP/DOWN keys. The
display shows [A] flashing.

3. Rotate the main dial to select a character. Press

the V/M key. The character stops flashing and
is entered.

4.

The same flashing character appears next to it,
ready for the next character to be entered. Re­peat the same sequence, up to seven characters.

5. To delete all characters during programming

press [CALL] key.

6. To exit after setting is done, press one of the

following keys: PTT, FUNC, TS / DCS.

After programming, the alphanumeric tag will be displayed on the designated channels, instead of
the frequency, when in memory mode. The memory channel number and other status icons will
also be displayed. If you wish to see the programmed frequency, press FUNC and it will be dis­played for 5 seconds. To return to the alphanumeric display, wait 5 seconds or press any key.
Pressing any key followed by FUNC returns to normal operation, regardless of the display status.

IMPORTANT: This function cannot be enabled without programming the memories.

Dimmer

The display illumination can be dimmed.

1. [LAMP-H] is displayed as default.

2. Rotate the dial to choose the brighter (H) or

darker (L) position.

(T/E models only)

30

7. Advanced Operations

Your transceiver offers different features for advanced operations.

SCANNING FUNCTION

Use this function to automatically search for signals. 6 different scan types are available in the unit.
In parameter setting mode, choose Timer mode or Busy mode to determine the desired resuming
condition. If the CTCSS(TSQ) squelch or DCS squelch is set, the audio can be heard only when the
tone/code matches the incoming signal. Otherwise, scanning stops but no audio will be heard. The
direction of scan, upward or downward, can be changed during the scan by rotating the main dial
or pressing UP or DOWN keys in the desired direction.

[VFO Scan]

Scans all VFO channels in regard to the preset tuning step.

1. Enter VFO mode.

2. Press UP (to go upward) Down (to go down-

ward) key or MHz key for more than 1 second
but less than 2 seconds.

3. The scan starts. It stops at the frequency where

the incoming signal is detected, and resumes
the scan according to the resume setting.

4. Press any key (other than UP/DOWN keys) to

exit.

[Memory Scan]

Scans all memory channels unless Memory skip feature is
selected for a given memory.

1. Enter Memory mode.

2. Sequence is the same as in VFO scan. Use UP/

DOWN keys or MHz key for commands.

NOTE: Memory Skip feature

This feature allows determined memory channels to be skipped during the scan.
The skip channel can be set even after the memory is programmed.

1. In Memory mode, select the channel to be skipped. Press FUNC key. While F
icon is visible on the display, press V/M key. Repeat the sequence to delete the
setting.

2. When the memory channel is set to Skip,
the 10 MHz order decimal point will be
displayed.

3. CALL, PL, PH, and ch.99 are always
skipped during Memory scan.

lights up

31

7. Advanced Operations

•Program Scan

This is a type of VFO scan, but by setting the frequency range
of the VFO into PH and PL channels, it only scans between
those frequencies. With setting the PH and PL properly, up to
3 Program scan ranges will be available.

1. Enter the VFO mode and set the PL and PH

frequency into the designated memory chan­nels. Refer to Memory setting for the proper
sequence.

2. Return to VFO mode by pressing V/M key. Set

the VFO to the frequency within the range to
be program-scanned.

3. Press MHz key for more than 1 second to start

scanning. During this scan mode, “P” flashes
after memory channel display.

4. Use main dial or UP/DOWN keys to change

the direction. Press any key (other than the UP/
DOWN keys) to exit.

The Highest band edge

Range (a)

The Lowest band edge

(b)
(c)

PH

PL

•Tone Scan

This function automatically searches for the CTCSS tone an
incoming signal might carry. This feature is useful to search
the encoding tone of a repeater, or to communicate with a
station operating in TSQ (CTCSS squelch) mode.

1. Press TS/DCS key to enter CTCSS decode set-

ting mode.

2. Press UP/DOWN key for more than 1 second

but less than 2 seconds to start scanning. It scans
39 tones in order.

3. The decimal point on the tone frequency will

flash, and it stops when the matching tone is
detected.

4. The scan won’t resume until the operation is

repeated.

5. Press any key (other than UP/DOWN keys) to

exit.

32

•DCS scan

Same as previous, but for DCS code search.

1. Press TS/DCS key to enter DCS setting mode.

2. Press UP/DOWN key for more than 1 second

but less than 2 seconds to start. It searches the
104 DCS codes in order.

3. The 10 MHz order decimal point will flash.

4. The scan stops when the matching code is de-

tected.

5. The scan won’t resume until the operation is

repeated.

6. Press any key (other than UP/DOWN keys) to

exit.

7. Advanced Operations

KEY-LOCK FUNCTION

This will lock the keys to avoid unintentional changes.

1. Press FUNC key and press TS/DCS key while

F icon is on the display.

2. The [ ] icon appears.

3. With this function activated, only the follow-

ing commands can be accessed:

• PTT

• FUNC+TS/DCS to cancel this function

• Monitor function (to release squelch for weak
signal reception)

• Squelch setting

• UP/DOWN keys

TONE BURST

Press the DOWN key while PTT is pressed. The tone burst will be transmitted as long as both keys
are pressed together. Usually just a few seconds of burst is enough to activate the repeater.

33

7. Advanced Operations

Digital voice communication

By installing an optional digital unit EJ-47U, digital voice communication becomes possible.

1. Install EJ-47U to the connecter CN105 of the

unit. See the instruction that comes with EJ­47U for assembling details.

2. Press the FUNC key, and then press the SQL

key while the [F] icon is displayed.

[ ] is shown on the display.

3. Press the FUNC key or the PTT key to enter

the digital communication mode.

When digital setting is made

4. To cancel the digital communication mode,

press the SQL key while the display shows
codes in step 2.

IMPORTANT: When activating this setting, a code is displayed and switched by rotating the

dial, but it does not affect the function of EJ-47U. Please disregard this setting
sequence. Digital voice operation on certain amateur radio frequencies may
be prohibited, restricted or subject to a special station license. Please be sure
to consult with your local authority prior to operating in this mode.

(T/E models only)

WIDE / NARROW (Reduction of the Mic. Gain / Deviation)

Switching to the NARROW mode:

1. Press MHz key while keeping FUNC key

pressed. [Nar] appears on the LCD display and
the transceiver enters the NARROW mode.

2. Repeat the same sequence to switch between

the WIDE / NARROW modes. When the trans­ceiver is in the WIDE mode, which is the nor­mal operation, no indication appears on the
LCD display.

3. In the NARROW mode, the microphone gain

and modulation during transmission and the de­modulation range during reception will be
lower.

34

7. Advanced Operations

AUTO-DIALER

This will automatically transmit pre-programmed DTMF tones. DTMF (Dual-Tone-Multi-Fre­quency) are the same tones used in the telephone system, and they are often used to remote control
electronic devices or AUTOPATCH phone systems available on some repeaters.

To program tones in the A uto-dialer memory:

1. Press FUNC key and TS/DCS key at the same

time to enter the setting mode. Default display
is 0 on the right end of the display. Memory
channel icon displays which of the ten auto­dial memories (0~9) is in use.

2. Use UP/DOWN keys to select the desired chan-

nel.

3. Rotate the main dial to select the first digit, then

press TS/DCS key to enter. The Cursor moves
toward right. Repeat sequence to complete.

4. Use [-] for pause. The display scrolls when the

7th digit is entered. The numbers 0 to 9, pause,
* and # can be stored up to a total of 16 digits.

(Ex. Dialer set mode)

5. To check the entered digits, press FUNC then

rotate the main dial while F icon is on.

6. To delete, press CALL key. Press PTT, V/M,

MHz or SQL keys to exit and return to original
status.

To transmit tones in the Auto-dialer memory:

1. Press PTT then press the “UP” key on the mi-

crophone while transmitting. The last pro­grammed code will be transmitted.

2. To change the Auto-dialer memory channel,

press FUNC and TS/DCS keys then select the
desired channel by pressing the UP/DOWN
keys on the microphone.

35

7. Advanced Operations

THEFT ALARM (Optional ADALM135 required for FXE models)

This alert uses a beep sound when the unit is about to be removed in an improper manner. This
function is useful when the unit is installed in a vehicle.

DC power cable

(ADALM135)
Alarm cable A

Steering-wheel etc.

Transceiver

Alarm cable B

NOTE: Remove wire from steering wheel before attempting to drive vehicle.

Battery

[Operation 1]

Setting: Connect the DC cable direct to the battery.

1. Connect the provided alarm cable to the DATA jack on the front panel as shown.

Secure the other end of the cable to an object that stays fixed in the vehicle.

2. Enter the Parameter Setting mode by pressing FUNC key for more than 2 seconds.

Use SQL or UP/DOWN keys to select menu and rotate the dial to set SCR-ON.
Press any key other than SQL/UP/DOWN key to enter the setting and exit.

3. Turn off the unit with main power switch. The TX LED will be lit.

To turn off the alarm function, turn on the unit, enter the Parameter setting mode again, and select
SCR-OF. When alarm is activated, the decimal points on 100 MHz and 100 kHz order will flash on
display.

36

NOTE: 1. The alarm functions only when the unit is turned off.

2.

When the alarm is activated (SCR-ON or DLY), the Ignition key function does not work.

Function:

1. When the alarm cable is removed from the DATA jack or cut without using the

proper sequence, the alarm sounds for 10 minutes. During the alarm, the unit goes to
receive on memory channel 99, according to its pre-programmed setting (TSQ/DCS
accepted).

2. When a signal is received on ch.99 the alarm stops.

3. Turning on the unit with SQL key pressed also cancels the alarm.

4. Turn the unit off again with the alarm cable connected properly. It returns to the

alarm mode.

7. Advanced Operations

[Operation 2]

Choose this operation when a delay period is desired.

1. Enter the Parameter setting mode as described previously and select SCR-DLY.

Follow the previous instruction to set.

2. Turn off the unit. Display will disappear but the LCD illumination stays on. After 20

seconds TX LED lights up, illumination dims, and alarm functions. The system won’t
work during the 20 second “DELAY” period.

3. The alarm sounds under the same condition as described previously. There is a 20

second delay until the alarm sounds. During the 20 second period, only the display
illumination is lit. Turn ON the unit during “DELAY” period to cancel the alarm
function.

Please set the parameter at SCR-OF during normal operation.

AM Mode Reception (DR235TMk only)

For reception, switch the reception mode to AM. For transmission, the transceiver enters the FM
mode.

Selecting the AM mode:

1. Press FUNC key, and while F icon is ON, press

SQL key. [ ] appears on the LCD display
and the transceiver enters the PACKET mode.

2. Press FUNC key again, and while F icon is ON,

press SQL key. [A] appears on the LCD dis­play and the transceiver enters the AM recep-

tion mode.

3. Repeat the same sequence to switch the modes

in the following order : NORMAL > PACKET
> AM > NORMAL.

Reference:

On the DR135TMk , the transceiver automati­cally enters the AM reception mode in the fre­quency range.

(Packet mode)

(AM mode)

37

7. Advanced Operations

CABLE CLONE

This feature will copy the programmed data and parameters in the master unit to slave units. It
copies the parameters and memory program settings.

Connection

Make a cable using 3.5 mm stereo-mini plugs as shown below. Make a master unit by setting and
programming it as desired. Turn off both units. Connect the cable between the DATA jacks on both
master and slave. Turn both radios on after the connection is made.

Master Slave stereo plug 3.5plug process

DATA

GND

3.5 mm stereo-mini plug

TX/RX

Master side Slave side

[Setting: Slave side]

1. Go to receive mode (VFO or Memory). Avoid using 9600bps data reception.

2. When it receives the clone data, LD*** shows up on the display.

3. When the transmission is successfully finished, the display will show [PASS].

4. Turn off the power. Disconnect the cable and repeat the sequence to clone the next

slave unit.

[Setting: Master side]

1. Press CALL key with FUNC key pressed. CLONE will be displayed and the radio

enters the clone mode.

2. Press PTT . SD*** will be displayed and it starts sending the data into the slave unit.

3. [PASS] will appear on the display when the data is successfully transmitted.

4.

The master radio may stay turned on for the next clone. Turn off the unit to exit from the
clone mode.

If the data is not successfully transmitted, turn off both units, make sure the cable connection is
correct and repeat the entire operation from the beginning. If you quit the operation in condition
that the clone is incompleted please reset the slave unit by refering to P.46.

38

8. PACKET OPERATION

Packet mode is high-speed data communication using a personal computer. The use of a Digital
repeater network (Digi-peaters), including satellites, offers communications with distant stations.
In order to operate in the packet mode, it is essential that the station is equipped with a personal
computer with appropriate packet software, 9 pin RS-232C cable, optional EJ-41U TNC unit or
external TNC (terminal node controller). For the operation of the EJ-41U unit or external TNC,
please refer to its respective instruction manual. (T/E models only)

[To operate packet using EJ-41U]

Configure the radio to a known packet operation frequency.
Install the EJ-41U unit in the transceiver following the instructions below. Use an RS-232C cable
and connect it to the DSUB-9 connector on the back of transceiver and the PC.

RS-232C

Personal computer

1. Remove the cover. Locate W1 cable on the back of DSUB-9 connector in the unit.

Disconnect it and re-connect it to CN1 on the EJ-41U unit.

DSUB-9

Bottom side

CN107

W1

A

T

A

D

X

T

VCO case

2. Locate W2 cable on the EJ-41U. Connect it to CN107 on the trasnceiver circuit

board.

39

8. PACKET OPERATION

3. Place the cushion sticker on the VCO shield case (a metal housing on the circuit

Packet Mode Setting

1. Press FUNC key. While F icon is on, press SQL key. [ ] appears on the LCD

board).

W1

DSUB-9

W2

A

T

A

CN107

D

X

T

VCO case

Bottom side

display and the transceiver enters packet mode. Repeat the same sequence to exit
from packet mode.

2. Use the computer keyboard to send designated commands from your PC to enter the

packet network and start operation. Refer to the chart for TNC commands. Use the
commands to select between 1200/9600 bps data speed.

Reference:

The configuration of EJ-41U is as follows. Please use PC commands to program.

• Data Speed (Transfer Rate) 9600bps (to computer)

• Data Length 8 bit

• Parity Bit none

• Stop bit 1 bit

• Flow Control Xon/Xoff
Once the EJ-41U is programmed, the settings are stored in memory even if the unit
is removed from the transceiver. Some EJ-41U functions may be limited as com­pared to those found in an external TNC.

CAUTION:

In order to replace a lithium-Ion battery installed on EJ-41U, please be mindful to the
polarity of the battery. If it is replaced in wrong way, it may cause damages to the EJ­41U and/or the radio risking even the explotion of components. A soldering iron is
required for the task and if you are not confident, please consult with your local
Alinco dealer for the replacement.

EJ-41U (option)

40

8. PACKET OPERATION

[To operate packet using an external TNC]

Use the DSUB-9 connector to connect the radio and the PC. The pin allocation for the DSUB-9 on
the back of the unit is as follows:

Transceiver

Packet RX OUT
1200 bps

Transceiver

Packet RX OUT 9600 bps

1200 bps

FM Packet TNC

DATAINDATA

GND

GND

Packet TX IN
1200 bps

EXT. PTT Input

9600 bps

FM Packet TNC

DATAINDATA

GND

GND

Packet TX IN 9600 bps

EXT. PTT Input

OUT

OUT

PTT

RS-232C

Personal Computer

PTT

RS-232C

Personal Computer

1. SQC squelch signal output. Carrier in: closed. Open collector output.

2. Packet reception DATA output (9600bps) output level 500mVrms/10Kohm

3. Packet transmission DATA input (9600bps) input level 300mV/600ohm Max input level 600mV.

4. Packet reception DATA output (1200bps) output level 100mV/600ohm

5. Ground

6. No Connection

7. PTT signal input : Low (GND) : TX, Open: RX

8. 5.0Vdc output: Max current less than 50mA

9. Packet transmission DATA input (1200bps): input level 100mV/600ohm

1

2345

Pin numbering

6789

looking at rear of radio

41

8. PACKET OPERATION

•1200bps

Connect Pins 4, 5, 7, 9, and 1 and 8 also depending on the requirement. It enables a conventional
1200bps packet mode.

•9600bps

Connect Pins 2, 3, 5, 7, and 1 and 8 also depending on the requirement.
Press FUNC key, while F icon is on, press SQL. [ ] appears on LCD and enables 9600bps
packet mode.

NOTE: • Never connect a PC directly to the DSUB-9 connector if EJ-41U is not installed. It may

cause the unit to malfunction.

• The local system, transmission and reception environment may easily cause troubles in 9600bps
packet mode. A connection error may frequently occur unless the communication is established
at very high signal strength.

• When the DATA input level is far off from the specification (1200bps=100mVrms/600ohm,
9600bps=400mV/600ohm), it causes poor S/N ratio and distortion, as such the data will not be
exchanged properly.

• When the radio is in the data mode (packet/APRS®), selective calling tones such as DCS and
CTCSS won’t be transmitted.

[To operate APRS®]

APRS® is a trademark of Mr. Bob Bruninga, WB4APR. Using the designated APRS frequency in
your area, and a system composed of the transceiver, EJ-41U (or TNC) a computer and/or a GPS
receiver, you may monitor and exchange various geolocating information on the PC and on the
internet. Details are available from Internet sites.

The radio is capable of being connected to an EJ-41U (or TNC), PC and GPS receiver. To enjoy
APRS operation, a GPS receiver, computer and APRS software are required in addition to the
packet (data) operation system previously mentioned. Purchase a NMEA (National Marine Elec­tronics Association) compatible GPS receiver with a data output port.

• Specifications required for the GPS receiver: NMEA-0183, 4800bps/without parity bit/data length
8 bit/ stop bit 1bit

42

8. PACKET OPERATION

[SET UP]

Please refer to the previous chapter for the set up and installation of the EJ-41U unit, TNC and PC.
See below for the connection of a GPS receiver. It requires a 3.5mm stereo plug to connect to the
DATA Terminal on the radio's front panel. See the chart for plug connections. Program the EJ-41U
by using commands from the PC in the same way as in the packet mode.
The PC can be removed from the transceiver once the EJ-41U is configured. EJ-41U will hold the
settings in memory. Repeat configuration only when it is necessary.

GPS receiver

3.5 mm
3-conductor plug

DATA IN

terminal

RXD (To TXD of GPS receiver)

+

B (To power of GPS receiver) Note (1)

DSUB-9 cable

Personal Computer

Note 1: When the transceiver is set to the PACKET mode, a power output of +4.5V (max. 200mA) is

supplied by the transceiver, which can be used to power the GPS receiver.

[APRS Operation]

Boot up the PC and open the APRS software. Tune to the APRS system frequency.
Press FUNC key and while F icon is on press SQL key to enter to the data (APRS) mode. Repeat
the same sequence to exit.

[ ] appears on the LCD display when the unit is in data (APRS) mode
The PC monitor will display the initial menu of TNC when it enters the APRS mode.

•

Set the packet speed in command mode (cmd:). I.e.

cmd:HB 1200 and 9600

•Register your call sign cmd:MY xxxxxx

• Set the speed on GPS port cmd:GB4800

• Set the automatic transmission time separation cmd:LOC E 3

• Set the monitoring header option OFF cmd:LTMH OFF

• The transceiver will start transmitting automatically when data is received from the GPS re­ceiver. Refer to the command chart and EJ-41U instruction manual for more details.

Note: Set the transceiver and GPS receiver as far away from each other as possible to minimize pos-

sible interference.

IMPORTANT: Please always turn off the GPS receiver or disconnect the GPS cable from the DA TA IN

terminal before turning off the radio. Otherwise y ou ma y risk resetting the CPU on the
EJ-41U.

43

9. Remote Control Operation

With using an EMS 57 microphone (may be optioned), the transceiver can be controlled remotely
by operating the DTMF keys on the microphone. Frequencies can also be entered directly from the
microphone.

1

DTMF

LOCK

2

OFF

OFF

1. Enter the remote command or the frequency.

2. Press LOCK to prevent the transceiver from accepting remote control inputs from

the microphone.

3. To operate remote control, press REMOTE.

3

[List of Remote Control Keys]

Key
0-9 – Direct frequency input –
A V/M Memory channel access 22
B CALL Call channel access 24
C SET mode SET mode access (Note 1) 26
D

*

#– – –

0H/L Switching transmission output 25

Note 1: To change the set mode menu, press the UP and DOWN keys at the top. To change its

Note 2: To change the auto dialer memory, press the UP and DOWN keys at the top. The numbers

Transceiver corresponding key

FUNC+TS / DCS Auto dialer memory registration (Note 2)

Function Page

35

Press and hold SQL Monitor function 24

contents, press the * and # keys. Press any key other than the * or # key to return to the
frequency display.

can be entered directly by pressing the numerical keys; the numbers or symbols can also
be selected by pressing the * and # keys and entered by pressing the A key. Press C to clear,
and the B, D, or PTT key to return to the frequency display.

44

9. Remote Control Operation

[Entering a frequency directly]

Frequencies can be entered directly by pressing the numerical (1~0) keys.
Only valid numbers will be accepted and entered to the display.

1. Set the microphone REMOTE / DTMF switch to the REMOTE position.

2. DTMF keys can be used to enter ftom the 100 MHz digit.

(Ex.) When setting 144.20 MHz with the tuning step set to 5 kHz.

Enter

After entering the sixth digit a slightly longer beep is emitted and the entry is com­plete.

3. Cancelling an entry before it is completed. Press PTT, or any key other than the

numerical keys.

[Entry method depending on tuning step]

Depending on the set tuning step, digit entry may be necessary to the 1 kHz digit. In some cases
entry to the 10 kHz digit is sufficient. For cases in which digit entry is only necessary to the 10 kHz
digit some digit keys wre not accepted.

The relationshop between the tuning step and input method is as follows.

Tuning step

5.0 kHz

8.33 kHz

10.0 kHz 10 kHz Completion after input of the 10 kHz digit.

12.5 kHz 10 kHz 0···00.0, 1···12.5, 2···25.0, 3···37.5, 4···invalid

15.0 kHz 10 kHz Completion after input of the 10 kHz digit.

20.0 kHz 10 kHz Completion after input of the 10 kHz digit.

25 kHz 10 kHz 0···00.0, 2···25.0, 5···50.0, 7···75.0,

30 kHz 10 kHz When you input the 10 kHz digit, the 1 kHz digit set as follows.

50 kHz 10 kHz

Entry

completion digit

1 kHz Completion after input of the 1 kHz digit.

When you input the 10 kHz digit, the 1 kHz digit set as follows.

5···50.0, 6···62.5, 7···75.0, 8···87.5, 9···invalid

When you input the 10 kHz digit, the 1 kHz digit set as follows.

Other entries are invalid.

When you input the 10 kHz digit, the 1 kHz digit set as follows.
0···00.0, 5···50.0

Final digit selection

45

10. Maintenance / Reference

Reset

Resetting the transceiver returns all programmed contents to their factory default setting.
If any problems persist, resetting may overcome them and return the transceiver to normal opera­tion.

Reset Procedure

While holding the FUNC key down, turn the power on.
All segments of the LCD will be displayed, then default set­tings are displayed.

All LCD segments

Note: Take special care when resetting because all settings are initialized.

Factory Default Settings

VFO frequency

CALL frequency

Memory channel 0-99

Offset direction

Offset frequency

Channel step

Tone setting

Tone frequency

DCS setting

DCS code

Output power

Keylock setting

TOT
APO

Squelch setting

145.000 MHz

145.000 MHz

DR-135

TMkIII

-

-

600 kHz

5 kHz

-

88.5 Hz

-

023

HI
OFF
OFF
OFF

2

DR-135

EMkIII/FXE

145.000 MHz

145.000 MHz

-

-

600 kHz

12.5 kHz

-

88.5 Hz

-

023

HI
OFF
OFF
OFF

2

DR-235

TMkIII

223.500 MHz

223.500 MHz

-

-

1.6 MHz
5 kHz

-

88.5 Hz

-

023

HI
OFF
OFF
OFF

2

DR-435

TMkIII

445.000 MHz

445.000 MHz

-

-

5.0 MHz
5 kHz

-

88.5 Hz

-

023

HI
OFF
OFF
OFF

2

DR-435

EMkIII/FXE

435.000 MHz

435.000 MHz

-

-

5.0 MHz

12.5 kHz

-

88.5 Hz

-

023

HI
OFF
OFF
OFF

2

46

10. Maintenance / Reference

Trouble Shooting

Please check the list below before concluding that the transceiver is faulty.
If a problem persists, reset the transceiver. This can sometimes correct erroneous operation.

Problem

(a) Power is on nothing

appears on Display.

(b) Fuse is blown.

(c) Display is too dim.

(d) No sound comes from

speaker.

(e) Key and Dial do not

function.

(f) Rotating Dial will not

change memory channel.

(g)

PTT key is pressed but
transmission does not occur.

(h) The unit does not transmit

and cannot be reset.

(i) The unit does not work in

the packet mode.

Possible Causes and Potential Solutions

+ and - polarities of power connection are reversed. Connect red lead to plus
terminal and black lead to minus terminal of DC power supply.

Check and solve problem resulting in blown fuse and replace fuse with new fuse.

Dimmer setting is "LAMP-L". Please make the dimmer setting "LAMP-H".

• Squelch is muted. Decrease squelch level.

•Tone or DCS squelch is active. Turn CTCSS or DCS squelch off.

Key-lock function is activated. Cancel Key-lock function.

Transceiver is in CALL mode. Press the VFO or memory mode.

•Microphone connection is poor. Connect microphone properly.

• Antenna connection is poor. Connect antenna properly.

The DSUB-9 port has been connected to a PC without installing the EJ-41U.
Disconnect the cable and install EJ-41U properly.

• EJ-41U/TNC is not set properly. Make sure the connections and
configurations are properly set.

• The unit is not in the data mode. Follow the instruction, configure and retry.

• The squelch is open. Adjust squelch level properly.

• The data transmission speed is not configured. Use command to configure the
speed.

• The cable is not straight type. Use straight RS-232C cable.

(j) The unit does not work in

the APRS mode.

• The unit is not in the data mode. Make sure the connections and parameters
are configured properly.

• The unit is not configured for automatic transmission. Use PC to configure
the TNC.

• The squelch is open. Adjust squelch level properly.

• GPS receiver is not receiving the data from the satellites. Wait until GPS
receiver receives data from satellites.

47

11. Optional accessories

• EMS-57 DTMF microphone

• EDC-36 Cigar-plug cable with filter

(for Cigar-plug connection. Recommended in case
other Alinco handheld transceivers may be used
in the vehicle, as this cable can also power the
handheld units. See its manual for compatibility)

• EDC-37 DC cable

(for ignition key ON/OFF system: for direct con­nection to ACC terminal circuit)

• EMS-53 Microphone

•EJ-41U TNC unit

•EJ-47U Digital unit

•ADALM135 Alarm cable kit

(“Theft Alarm” stickers included)

(DR135FXE/435FXE only)

cable A

cable B

48

12. Specifications

DR-135EMk / FXE: VHF FM MOBILE TRANSCEIVER 144.000-145.995MHz
DR-435EMk / FXE: UHF FM MOBILE TRANSCEIVER 430.000-439.995MHz

CE0336

This device is authorized for use in all EU and EFTA member states.
An operator's license is required for this device.

!

49

Appendix

TNC Commands List

The commands supported by the built-in TNC are list below. You must enter a space between a
command name (or short-form) and a parameter, or between two parameters; ex.AU OFF.

Command form

Name Short

AUTOLF AU ON ON/OFF When ON, sends a line feed (LF) to the PC after each

BEACON B EVERY 0 EVERY/ If set to EVERY, sends a beacon packet at intervals of the

BTEXT BT - 0 - 159 Specifies the content of the data portion of a beacon

CALIBRAT CAL - - Sends a space/mark square wave (50/50 ratio). Enter

CHCAK CH 30 0 - 250 Specifies the interval from signal drop-out until execution

CONNECT C - Call1 (VIA Sends a connect request. Call 1 is the call sign of the station

CONVERSE

CPACTIME CP OFF ON/OFF When ON and in Converse mode, sends a packet at inter-

CR CR ON ON/OFF When ON, appends a carriage return (CR) to all packets to

DISCONNE D - - Sends a disconnect request.

DISPLAY DISP - -

DWAIT DW 30 30 Specifies the interval from no carrier detection until execu-

ECHO E ON ON/OFF When ON, causes the TNC to echo received characters to

CONV - - Causes the TNC to enter Converse mode. Press [Ctrl]+[C]
or K to restore the Command mode.

Default Parameters Description

carriage return (CR).

AFTER n specified period (n). If set to AFTER, sends a beacon packet
( n=0 - 250 ) only once after the specified period (n). The unit of n is 10

seconds.

characters packet.

Q to exit Calibrate mode and restore the Command mode.

of disconnection. The unit of the parameter is 10 seconds.

call1, call3, to be connected to. Calls 2 to call 9 are call signs of stations

....call9) to be digipeated through.

vals of the period determine by PACTIME

be sent.

Causes the TNC to display the current status of all the com­mands. You can also specify a class identifier A, C, H, I, L,
M, or T to display the status of only the desired command
class. Enter a space between the command name and a class
identifier; ex. DISPLAY H.
A (ASYNC): RS-232C port parameters.
C (CHAR) : Special TNC characters.
H (HEALTH): Counter parameters.
I (ID): ID parameters.
L (LINK): TNC-to -TNC link status.
M (MONITOR): Monitor parameters.
T (TIMING): Timing parameters.

tion of transmission. The unit of the parameter is 10 milli­seconds.

the computer.

50

Appendix

Command form

Name Short

FIRMRNR FIR OFF ON/OFF The other station sends a notice (packet) to you if it is not

FLOW F ON ON/OFF

FRACK FR 3 0 - 250 Specifies the interval from one transmission until retry

GBAUD GB 4800 4800/9600 Selects 4800 or 9600 bps as the transfer rate between

GPSSEND GPSS - 0 - 159 Specifies the content of the data to be output to the GPS

GPSTEXT GPST $PNTS 0 - 6 Specifies the type of a message to be determined by

HBAUD HB 1200 1200/9600 Selects 1200 or 9600 bps as the transfer rate between

LOCATION

LPATH LPA GPS Call1 ( VIA Specifies calls signs to send GPS data. Call 1 is the call sign

LTEXT LT - 0 - 159 Specifies the content of a message to be included in GPS

LT MON LTM 0 0 - 250 Specifies the interval for displaying a message determined

MCOM MCOM OFF ON/OFF When ON, causes the TNC to also monitor control packets.

MCON MC OFF ON/OFF When ON, causes the TNC to monitor other stations

MONITOR M ON ON/OFF When ON, causes the TNC to monitor packets.

MRPT MR ON ON/OFF When ON, causes the TNC to display the entire digipeat

MYCALL MY NOCALL 6 characters Specifies your call sign.

PACLEN P 128 0 - 255 Specifies the maximum length of the data portion of a

PACTIME PACT AFTER 10 EVERY/ If set to EVERY, sends a packet at intervals of the specified

PERSIST PE 128 128 Specifies a parameter to calculate probability for the

PPERSIST PP ON ON Causes the TNC to use the PERSIST/SLOTTIME method

LOC EVERY 0 EVERY/ If set to EVERY, sends GPS data at intervals of the speci-

Default Parameters Description

ready to receive data. When ON, receiving such a notice
causes the TNC to suspend transmission until it receives a
“ready” notice.

When ON, starting key entry causes the computer to stop
displaying received packets.

of transmission. The unit of the parameter is 1 second.

the TNC and the GPS receiver.

characters receiver; this data is used to pro gram the default settings on

the receiver. The output data is not stored in memory.

characters LTEXT.

packet stations.

AFTER n fied period (n). If set to AFTER, sends GPS data only once
( n = 0 - 250 ) after the specified period (n). The unit of n is 10 seconds.

call2, call3, ... of the destination. Call2 to call9 are call signs of stations to
call9 ) be digipeated through.

characters data.

by LTEXT on the screen; a message appears like a received
beacon packet. The unit of the parameter is 1 second.

When OFF, causes it to monitor only information packets.

while in connection with the target station.

list for monitored packets.

+SSID

packet.

AFTER n period (n). If set to AFTER, sends a packet only once after
( n = 0 - 250 ) the specified period of (n). The unit of n is 100 milliseconds.

PERSIST/SLOTTIME method.

when ON, or the DWAIT method when OFF.

51

Appendix

Command form

Name Short

RESET RESET - - Restores the default status for all the commands.

RESPTIME RES 5 5 Specifies the acknowledgement packet transmission delay.

RESTART

RETRY RE 10 10 Specifies the number of transmission retries. If packets are

SENDPAC SE $0D $0D Specifies a character that forces a packet to be sent.

SLOTTIME SL 3 3 Specifies the period of random number generation intervals

TRACE TRAC OFF OFF When ON, causes the TNC to display all received packets

TRIES TRI 0 0 Specifies the number of transmission retries programmed

TXDELAY TX 50 50

UNPROTO U CQ CQ Specifies call signs to send a packet in Unprotocol mode.

XFLOW X ON ON Causes the TNC to perform software flow control when

RESTART

Default Parameters Description

The unit of the parameter is 100 milliseconds.

-- Causes the TNC function as if it is switched OFF then ON.

not correctly accepted while connected, a connect request
is sent again after the specified number of retries.

for the PERSIST/SLOTTIME method. The unit of the pa­rameter is 10 milliseconds.

in their entirety.

in the retry counter.

Specifies the time delay between PTT ON and start of
transmission. The unit of the parameter is 10 milliseconds.

Call 1 is the call sign of the destination. Call2 to call9 are
call signs of stations to be digipeated through.

ON, or hardware flow control when OFF.

52