Alinco DR 735T User manual

DR-735T

Instruction Manual

Thank you for purchasing your new Alinco transceiver.

This Instruction manual contains important safety and operating instructions. Please read

this manual carefully before using the product and keep it for future reference.

NOTICE / Compliance Information Statement

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 radiate radio frequency energy and, if not installed and used in

accordance with the instruction manual, may cause harmful interference to radio communications. However, there is

no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful

interference o radio or television reception, which can be determined by turning the equipment off and on, the user

encouraged to try to correct the interference by one or more of the following measure:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Changes or modiﬁcations not modiﬁcations not

expressly approved by the party responsible for compliance could void the user’s authority to operate the

equipment.

VHF/UHF FM Transceiver DR-735T

This device complies with Part 15 of the FCC Rules. Operation is subject to the two conditions: (1) This device may

not cause harmful interference, and (2) this device must accept any interference received, including interference

that may cause undesired operation.

Manufacturer: ALINCO, INC

Yodoyabashi-Dai building 13

Conformity Information

In case the unit you have purchased is marked with a CE symbol, a copy of relative conformity certiﬁcate or

document can be reviewed at http://www.alinco.com/usa.html. Please see the back-cover for more details.

in any form or by any means without the prior written permission of Alinco. Inc., Osaka, Japan. English Edition

Printed in Japan.

Floor 4-9, 5-Chome, Koraibashi, Chio-ku, Osaka 541-0043, JAPAN

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

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To prevent any hazard during operation of Alinco’s radio product, in this manual and on the

product you may ﬁ nd symbols shown below. Please read and understand the meanings of

these symbols before starting to use the product.

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This symbol is intended to alert the user to an immediate

Danger

Alert

Caution

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.

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.

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).

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.

WARNING

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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 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.

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Use only appropriate, reliable and certiﬁed 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 outlet if the contacts are dirty and/or dusty.

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.

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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 including the antenna 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 9 also.

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

product for service and assistance.

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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. That may be used in

accessories you use with this product.

Please check your local regulations for details on recycling option or disposal of the

batteries in your area.

WARNING

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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.

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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.

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• 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.

• When transmitting for long periods of time at high power,

the transceiver might overheat. This product is NOT a

100% -duty transmitter.

• 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/she 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 more 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.

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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.

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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.

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

 Tran sc eiv e r 

(15A fuse)

VOL

BAND

MAIN

SQL

MHz

SET

SCAN

V/M

VOL

MAIN

BAND

SQL

MHz

SCAN

H/L

V/M

 DC power cable including 15A fuse and

EMS79 (with DTMF keypad)

 Mobile Mounting bracket

holder

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 Hardware kit for bracket  Small (spanner) wrench

Bracket screws AE0012 (M4 x 8mm) x 4

Screws (M5 x 20mm) x 4

Tapping screws (M5 x 20mm) x 4

Hexagonal nut (M5) x 5

 Instruction manual

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.

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.

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Connect the microphone plug into microphone terminal on the

right side of control panel or into other microphone terminal in

front of MAIN unit. Insert the plug until hearing a click.

IMPORTANT

When connecting, take care to the modular

plug direction.

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Connect antenna port to 50: antenna that covers 2m/70cm bands, using good quality 50 : coaxial cable.

Microphone

Antenna

V O

rear panel

Coupling the antenna to the transceiver via feed-lines having impedance

IMPORTANT

other than 50: reduces the efﬁciency of the antenna system and can cause

interference to nearby televisions, radio receivers and other electronic

equipment.

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• Before connecting, be sure to turn off the transceiver and DC power

IMPORTANT

The transceiver requires 13.8V DC negative grounded power supply.

Use a regulated power supply capable of providing continuous current of 12A or more.

Power supplies that do not meet does 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.

supply.

• Be certain to use DC cable provided with unit.

External speaker (if used)

DC voltage range for operating this transceiver is DC 11.7V to 15.8V.

IMPORTANT

Transceiver will not operate out of this range. Inspect cable and connection

regularly to be sure there is not any damage or burning.

DC power supply

Black lead

Red lead

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Initial Installation

DC power cable

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The transceiver may be installed in any position in

your vehicle, where the controls and microphones

are easily accessible and it does not interference

with the safe operation of the vehicle or the

performance of the set. If your vehicle is equipped

with air bag, be certain your radio will not

interference with their deployment. If you are uncertain about where to mount the unit, contact

your vehicle’s manufacture.

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The main unit can be set with either side facing up. This can facilitate your ability to hear the

speaker’s audio clearly. Position the front panel as you prefer.

1. Slide the front panel while pulling the tab

toward yourself.

2. Turn the front panel, being careful to keep

the cable free from kinks.

3. Match the catch in the main unit with the

slot in the front panel and ﬁt the front

panel into the main unit.

4. Slide the front panel unit until it locks

securely in place.

Initial Installation

NOTE

④Match the catch in the main unit with

the slot in the front panel and fit the front panel into the main unit.

⑤Slide the front panel unit until it

locks securely in place.

By using the optional separation kit EDS-30, you can use the control and

the main unit in separate positions. The length of separation cable is 5m.

See page 75 for details.

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Use a 50: 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.

After installing your antenna, ensure that you have the best possible SWR

IMPORTANT

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.

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Initial Installation

Screw-fixed base

Magnet base

1. Drill 4 holes where the mounting bracket

is to be installed.

. Approx. 5.5-6mm (1/4”) when using nuts; approx.

2-3 mm (1/8”) when using self-tapping screws.

2. Insert the supplied screws, nuts and

washers through the mounting bracket

and tighten.

3. Adjust the angle fort your suitable

position.

Car body

Washer

Tapping screw

Mounting bracket

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There are 3 types of key operations; simply press, press after pressing [FUNC] key while FUNC appears on

the display, or press and hold.

• [Press] refers to one time quick press and remove ﬁnger.

• [FUNC + this Key] refers to one time press [FUNC] key and then pressing this key while FUNC appears

on the display.

• [Press and hold] refers to press key and hold it. Hold timing is adjustable in set mode; however factory

default is 2 sec.

To conﬁrm a parameter, [press any keys other than these keys] or [press microphone`s PTT switch] are

mentioned in this instruction manual. Quickest way to conﬁrm parameters is pressing microphone’s PTT

switch.

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②

④

⑥

① ⑩

③

⑨⑫⑮⑭⑬⑪⑧

 Primary Functions

No. Key Function

Power Key

Left band [VOL] knob Rotate to adjust audio sound level on the left band. (P.19)

Right band [VOL] knob Rotate to adjust audio sound level on the right band. (P.19)

Left band TX /RX indicator Indicates transmission (Red) or reception (Green) on the left band.

Right band TX/RX indicator Indicates transmission (Red) or reception (Green) on the right band.

Left band [SQL] knob Rotate to adjust squelch level on the left band. (P.20)

Right band [SQL] knob Rotate to adjust squelch level on the right band. (P.20)

Left band dial

Right band dial

[FUNC] key Sets functions.

Left band [V/M] key Switches between VFO mode and memory mode on the left band.

Right band [V/ M] key Switches between VFO mode and memory mode on the right band.

[MW] key Press to select dual Memory mode.

M N

 key

[H/ L] key Press to select Hi/Mid and Low output power. (P.33)

Microphone connector For connecting microphone.

Turns the power on/off. (P.19)

Rotate to select frequency, memory channel and various settings on the left band.

Rotate to select frequency, memory channel and various settings on the right band.

Programmable function key.(P.63)

⑤

⑦

⑯

Controls, Connectors, and Display

 Functions that requires press and holding to be activated

No. Key Function

Left band [VOL] knob Switches between VHF/Air-Band and UHF on the left band (P.19)

Right band [VOL] Knob Switches between UHF/ VHF and Air-Band on the right band (P.19)

Left band dial Switches between VFO and memory scan on the left band. (P.58)

Right band dial Switches between VFO and memory scan on the right band. (P.58)

[FUNC] key Sets mode. (P.34)

Left-Band [V/M] key Switches to Call channel on the Left-Band. (P.30)

Right-Band [V/M] key Switches to Call channel on the Right-Band. (P.30)

[MW] key Simple Memory writing. (P.24)

[H/ L] key Key lock. (P.62)

* Hold timing is adjustable in set mode

 Functions which can be activated while [FUNC] appears, after pressing [FUNC] key

No. Key Function

Left band [VOL] knob Switches to the single band mode on the left band. (P.57)

Right band [VOL] knob Switches to the single band mode on the right band. (P.57)

Left band dial Program scan on the left band. (P.60)

Right band dial Program scan on the right band. (P.60)

Left band [V/ M] key Write frequency to selected memory on the left band. (P.23)

Right-Band [V/ M] key Write frequency to selected memory on the right band. (P.23)

[MW] key Sets monitor function. (Reverse function when shift activated). (P.31)

M N

 key

[H/ L] key Accesses the digital voice communication mode (required optional unit) (P.66)

Selects Tone-squelch (CTCSS) or DCS. (P.64)

 Functions which can be activated while pressing the [FUNC] key

No. Key Function

Power key

Left band [VOL] knob Selects shift or offset frequency on the left band. (P.22)

Right band [VOL] knob Selects shift or offset frequency on the right band. (P.22)

Left band dial Sets priority scan on the left band. (P.60)

Right band dial Sets priority scan on the right band. (P.60)

Left band [V/ M] key Erase the memory while memory mode is selected on the left band. (P.25)

Right band [V/M] key Erase the memory while memory mode is selected on the right band. (P.25)

[MW] key Sets auto-dialer memory. (P.74)

M N

 key

[H/ L] key Sets the channel name while Memory mode selected. (P.28)

Normal Reset when turns the power on. (P.73)

Sets RGB backlight color. (P.63)

Controls, Connectors, and Display

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④①②

⑥③⑤

No. Key Function

Connects an external 8: speaker. Output audio from right band. When

External Speaker Jack 1 [SP1]

External Speaker Jack 2 [SP2]

DC Power cable Connects to the 13.8V DC power supply.

Air-cooling fan Cools the unit during transmission or when radio is holding high temperature.

Antenna connector Connects to antenna with 50: impedance matched with operation frequency.

DIN connector (6 PIN) Connects to external TNC unit for Packet communications.

another speaker is not connected to [SP2] , left band audio hear through internal speaker. Also [SP1] used for connecting clone or PC cables.

Connects an external 8: speaker. Output audio from left band. When another speaker is not connected to [SP1], right band audio hear through internal speaker.

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Before operating, install an efﬁcient, well-tuned antenna. The success of your installation will depend on the

type of antenna and its correct installation. Use a 50: impedance antenna and low-loss coaxial feed-line

that has a characteristic impedance of 50:, to match the transceiver input impedance.

Coupling the antenna to the transceiver via feed-lines having impedance other than 50 : reduces the

efﬁciency of the antenna system and can cause interference to nearby televisions, radio receivers and other

electronic equipment.

Transmitting without ﬁrst connecting an antenna or other matched load may damage the

NOTE

transceiver. Always connect the antenna to the transceiver before transmitting.

All ﬁxed stations should be equipped with a lightning protection to reduce the risk of ﬁre,

electric shock, and transceiver damage.

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• If you plan to use an external speaker, choose a speaker with an impedance of 8 :. Each external speaker

jacks accept a 3.5mm (1/8") mono (2-conductor) plug.

• External speaker adopt double port BTL, please care about the connection. Do not use the speaker that

requires grounding.

• Carefully insert plug into jack. Do not twist the plug and do not apply stress on speaker jack.

• When jacks are not in use, keep the [SP] cap (speaker jack cover) closed to keep contacts clean and

avoid entering dust and other objects into the radio.

• Insert plug into jack completely until end to prevent damaging the jack or plug.

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Controls, Connectors, and Display

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No. Key Function

S meter Indicates received or transmitted signal level. (P.31, 32)

Appears when advanced set mode is available. (P.48)

Appears during AM reception. (P.36)

Appears during transmission when other band is set for mute. (P.52)

Appears when APO function is activated. (P.49)

Appears when setting the key lock. (P.62)

Appears when [FUNC] key is pressed. (P.17)

Appears when in the digital voice communication mode. (P.66)

Appears when in packet mode. (P.55)

Appears when cross-band repeater mode is available.

Appears during time out timer setting. (P.49)

Appears during short cut setting. (P.63)

Appears when setting the shift. (P.22)

Appears when setting the tone squelch. (P.64)

Appears when setting the DCS. (P.65)

Appears when attenuator function is activated. (P.44)

Appears when in narrow band reception mode. (P.36)

Appears when reverse mode is activated. (P.32)

Appears when Bell function is activated. (P.39)

Indicates the VHF/ UHF frequency or memory name on the left band side. (P.20, 31)

Indicates the VHF/ UHF frequency or memory name on the right band side. (P.20, 31)

Appears on the band with transmitting ability. (P.19)

Appears when a signal is being received. (P.31)

[S] Flashes during scan and [PS] ﬂashes during program scan. (P.58)

Appears when transmission power is set to MID. (P.33)

Appears when transmission power is set to LOW. (P.33)

Appears during scan for skip channels. (P.59)

Appears when favorite channel is selected. (P.59)

Indicates memory numbers in the memory mode. (P.23)

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