Optimus CTR-107 User manual

Cat. No. 14-1112

OWNER’S MANUAL

Please read before using this equipment.

CTR-107

Portable Cassette

Tape Recorder

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FEATURES

Your Optimus CTR-107 Portable Cassette Tape Re-

corder has a lightweight, portable design that makes

it perfect for recording lectures, interviews, business

meetings, and speeches.

The recorder’s voice activation feature lets you set

the recorder to automatically record only when itpicks

up sound. This saves room on your cassette tape,

conserves battery power, and lets you record without

manually stopping the recorder whenever a long

pause or break occurs.

The recorder also includes these features:

Built-In Condenser Microphone — provides good

quality recordings.

Built-In Speaker — lets you listen to your recordings

without connecting an earphone.

Cue/Review — lets you listen to recordings at a high

speed to help you find a particular section.

Optimus is a registered trademark

used by Tandy Corporation.

RadioShack is a trademark used by

Tandy Corporation.

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Tape Counter — helps you quickly locate a specific

section on the tape.

Automatic Level Control (ALC) Circuit — automat-

ically adjusts to the proper recording level.

Auto Stop — automatically stops the recorder when

the tape reaches the end during playback or record-

ing.

Pause Control — lets you edit as you record.

Three Power Sources — let you power the recorder

using four AA batteries, a standard AC outlet (with an

optional AC adapter), or your vehicle’s cigarette-

lighter socket (with an optional DC adapter).

Built-In Carrying Strap — lets you easily carry the

cassette recorder anywhere you go.

Supplied Earphone — lets you listen in privacy.

Erase Plug — lets you erase a tape without record-

ing any sound over it.

MIC Jack — lets you connect an optional external mi-

crophone.

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CONTENTS

Preparation ........................................................... 5

Connecting Power ........................................... 5

Using Internal Batteries ............................ 5

Using AC Power ....................................... 8

Using Vehicle Battery Power .................. 10

Using the Earphone ...................................... 12

Listening Safely ...................................... 12

Traffic Safety .......................................... 13

Operation ............................................................ 14

Loading a Cassette Tape .............................. 14

Playing a Cassette Tape ............................... 16

Using Fast-Forward/Rewind ................... 18

Using the Tape Counter ......................... 19

Recording ...................................................... 20

Using an External Microphone ............... 22

Tape Tips ....................................................... 24

Recommended Tapes ............................ 24

Erasing a Cassette Tape ........................ 24

Preventing Accidental Erasure ............... 25

Restoring Tape Tension and

Sound Quality ........................................ 27

Maintenance ........................................................ 28

Cleaning the Tape-Handling Parts ................ 30

Specifications ..................................................... 33

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PREPARATION

CONNECTING POWER

You can power the CTR-107 from any of three power

sources:

• Internal batteries

• Standard AC power (with an optional AC

adapter)

• Your vehicle’s cigarette-lighter socket (with an

optional DC adapter)

Note: Connecting an adapter disconnects internal

batteries.

Using Internal Batteries

You can power the CTR-107 from four AA batteries

(not supplied). For the best performance, we recom-

mend alkaline batteries, such as RadioShack Cat.

No. 23-557.

You can also use rechargeable nickel-cadmium bat-

teries (Cat. No. 23-125) with a battery charger (Cat.

No. 23-133).

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Follow these steps to install batteries:

1. Press down on the battery compartment cover

and slide it off in the direction of the arrows.

2. Install the batteries as indicated by the polarity

symbols (+ and –) marked outside the compart-

ment.

Cautions:

• Use only fresh batteries of the required size

and type.

• Do not mix old and new batteries, different

types of batteries (standard, alkaline, or re-

chargeable), or rechargeable batteries of dif-

ferent capacities.

• Always dispose of old batteries promptly and

properly.

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• Never leave dead, old or weak batteries in the

CTR-107. Batteries can leak chemicals and

corrode or damage electronic circuits.

3. Replace the cover.

Notes:

• If you plan not to use the CTR-107 for a week or

more, or you plan to use an AC or DC adapter,

remove the batteries to protect the CTR-107

from possible battery leakage.

• When the RECORD/BATT indicator becomes

dim during operation or does not light when you

turn on the recorder, replace the batteries.

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Important: Your recorder is capable of using re-

chargeable nickel-cadmium batteries. At the end of

the batteries’ life, they must be recycled or disposed

of properly. Contact your local, county, or state haz-

ardous waste management authorities for information

on recycling or disposal programs in your area. Some

options that might be available are: municipal curb-

side collection, drop-off boxes at retailers such as

your local RadioShack store, recycling collection cen-

ters, and mail-back programs.

Using AC Power

To power the CTR-107 from an AC outlet, you need

an AC adapter (not supplied), such as Cat. No. 273-

1663 or 273-1664.

Cautions:

• The recommended AC adapter supplies 6 volts

and delivers at least 300 millliamps. Its center tip

is set to negative, and its plug correctly fits the

DC 6V jack on the CTR-107. Using an adaper

that does not meet these specifications could

seriously damage the CTR-107 or the adapter.

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• Always plug the AC adapter into the CTR-107

before you plug it into the AC outlet, and unplug

the AC adapter from the AC outlet before you

unplug its barrel plug from the CTR-107.

Follow these steps to connect the CTR-107 to AC

power.

1. Set the adapter’s voltage switch to 6V.

2. Insert the adapter’s 5.5 mm outer diameter/2.1

mm inner diameter barrel plug into the adapter’s

cord so it reads –TIP.

3. Insert the AC adapter’s barrel plug into the DC 6V

jack on the CTR-107.

4. Plug the AC adapter into a standard AC outlet.

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Using Vehicle Battery Power

You can power the CTR-107 from your vehicle’s ciga-

rette-lighter socket using a DC adapter (not supplied),

such as Cat. No. 273-1802.

Cautions:

• The recommended DC adapter supplies 6 volts

and delivers at least 300 milliamps. Its center tip

is set to negative, and its plug correctly fits the

CTR-107’s DC 6V jack. Using an adapter that

does not meet these specifications could dam-

age the CTR-107 or the adapter.

• Always plug the DC adapter into the CTR-107

before you plug it into the cigarette-lighter

socket, and always unplug the adapter from the

cigarette-lighter socket before you unplug it from

the CTR-107.

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