Hitachi trt-398 User Manual

MODEL

TRT-398

Record portable

while

radio

listening

tape

recorder!

to

the

radio!

All-Transistor

ACCESSORIES

Highly

sensitive Earphone Hitachi 3-in

Adhesive 3-

inch

reel

Ext

ens

ion

External Attractive

to

monitor

ch

tape

cord

antenna

case

dynamic

reel for

cord

SPECIFICATIONS

Tran

sistor

Germanium

Varistor Tape

Recording

Power Recording

Erasing

Maximum

Speaker Output

Frequency Radio

Tuning Antenna

Dimensions

Weight

Components

Speed

Time

Source

System

Size

Power

Characteristics

Circuit

Range

Diode

of

Sys

Tape

tem

microphone

recording

tape (Long

editing

Reel

play

200

),

which

2SA84

x 2, IN34A HV15

3¾

40 80 6V (1.5V. "D" A.C. D.C. 3 inches 4 x 2¾ 500mW 150-7,000 7-trans 535-1,605 Sel Length 10¼" (

6.6

2SA12,

(M ) x 3

ins/sec (9.5cm/sec minutes minutes

f-contained

lbs

on on

Bias

system

Electromagnetic

inch

P.M.

cycles

istor

su

kc

. (3 kg) i

provides

2SB73,

) l ½

two

tracks

two

tracks

cell

x 4)

system

speaker

(3¾

ins/sec) 150-4,000

perheterodyne

ferrite-core

265 mm),

ncluding

height

batteries

80

minutes

2SB75

ins/sec (4.75cm/sec at 3¾ins/sec at

l ½

antenna

4%" (

x 2,

2SB77

ins/sec

and

of

cycles

external

110 mm),

recording

x 2,

2SB15

)

(l ½

width

on

x 2

ins/sec

antenna

8½" (

both

)

attached

205 mm)

tracks

.

13

FEATURES

■

Just

turn

the switch to change the function from tape recorder to radio and vice versa. Recording can be

performed while listening to the radio. Moreover,

it

is

built

in a compact portable-type

unit

for easy

carrying.

■

The set is ready for recording or playback the in-

stant the switch is turned

on,

for unlike vacuum tubes,

transistors go to work immediately after switching.

■

High fidelity reproduction

is

guaranteed by Hitachi's

powerful 4 x 2¾ inch permanent, dynamic speaker,

which

■

ing and playback,

has

the high output

of

500 mW.

There is only one lever to operate for both record-

so

that

operation is conveniently

easy and simple.

■

It

is

powered by only four large capacity dry bat -

teries (1.5 V each). It also works

rent, by using the Hitachi

AC

on

alternating cur-

Adapter, which is avail-

able separately.

■

The microphone is equipped with a remote switch

which makes

or

on

at a distance.

■

An

easy-to-read level meter ensures recording at

an

ideal sound level.

it

possible to turn the power source

off

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+

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, /

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..

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,

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THE RADIO

■

It is a highly sensitive superheterodyne receiver,

with seven transistors.

■

A large ferrite-core antenna

built

into the set guar-

antees reception free from noise.

■

The vernier dial enables the listener to select the

station of his choice easily and accurately without

interference.

14

REMO

TE

JA

REWIND REE LSHAFT

CONTR

CK

TAPE S

CAP STAN

OL MICRO

CALE

n

PHONE

TAKE

UP

JACK

R

EEL SHAFT

CAPSTA N CO

LLA

R

j

I

CONTROLS

Function

and

Function

tor for

Recording

lever

ON-OFF

knob of

Radio

to

Speaker

the

Tuning

ing

Microphone

recording the

Antenna

nect

Radio

recording

Output

recorder be

selector

fast

forward

selector

lever

is on "

safe

transporting

button

to

PLAY

Switch & Volume

turns

the

speaker

broadcast

microphone

connected

the

tape

recorder

switch (RADIO ON<->

radio or

switch (Speaker ON<->

on and off.

knob (Tuning

through

jack (ANT

the

antenna

/phono

from

jack (OUT

is

to

lever

can be

lever

STOP",

.

(REC) To record,

while

pressing

power

supply

and

to

record a

stations

jacks (REM.

jack (RADIO

be

to

)

.

the

microphone; the

can be used

) To

furnished

another

) Use

amplified

this

jack

radio, stereo

Recording, playback, erasing, rewinding

controlled

lock

press

radio

This

CON.

improve

to

)

this

by

for

by

moving

button

the

lock

turn

the

recording

control (VOL

on

or

off

.

OFF)

is a

to

this

This

jack

other

monitoring

and

Turn

program.

OFF)

This

micromovement

MIC.

) Use

remote

switch

power

sensitivity

jack

.

is

the

or

when

amplifiers

just

When

the

button

TV

to

the

function

button

) The

controls

this

switch

speaker

these

control

supply

in

fringe

jack

to

set.

the

output

. Earphone can

.

one lever.

function

lock

the

.

volume

the

on

switch

dial

for

jacks

switch on areas, con-

be used

of

selec-

lever

selector

control

volume

to

listen

~urns

select

when

or

when

the

on

off

.

tape

-

HEAD

LEVEL INDICATOR

PAD COVER

ON-OF

F SWITCH &

VOLUME CONTROL

RAD

IO SWITCH

SPEAKER

SWIT CH

PRESSURE ROLLER KNOB

LOCK BUTTON (OUTPUT JACK)

FUNCTION SELECTOR LEVER

RECORDING FUNCTI BUTTON LEVER LOCK BUTTON

TUNING CONTROL

ON

SELECTOR

15

BLOCK

DIAGRAM

REC

/PL

~PL

ERASE

OSCILLATOR

MIXER

TR,

2SA84

1ST

AMP

AY

1-EAD

REC.

1-EAD

.

REC.

AY

I. F.

AMP.

TR,

2SA12

LOUDNESS

COM

PEN

SA

OSC

TOR

PLAY

MIC.

TR,

2SB77

ILL

REC

ATOR

I. F.

AMP

TR

10

2SA84

2

ND

AMP

TR,

2SB75

TO

CIRCUIT

POWER

SOURCE

DETECTO

.

. 3

RAD

IO SWITCH

REC.

OPLAY

S

D,

IN34A

RD

2S

TR

R

AMP

,

B75

NF

TR

.

QRIVER

TR,

2

SB77

HIGH

TON

PEN

E

SA TOR

COM

2S

,

B156

rn

.

B156

SPEAKER

O

FF

SW I

TCH

~

RE

M

MOT

OR

L

EVE

L I

NOi

C.

CA TOR

>-

Lo L

::JO

0

<C

_J

SPEAKER

CIRCUIT DIAGRAM

TR

1

2S

873

vc,

TR

s

2S

A354

TRT-398

TR

2SAJ2

( B)

TR

D,

2S875

,

2SA353

TR

2

2S

875

( F)

,

(D)

IN

34A( M)

( F) 2S

TR

,o

/ C)

TR

877

,

( C)

IN34A( M)

TR

s.6

2S8 I 56( B)

TR

D,

2S877

,

(A)

D2

I

N34A

(M)

16

Notes

:

1.

Units

2.

Values of

wound

3.

The voltages shown

n,

shown

,,F,

and F have

in

part

.

j_J

are

been the

those

omitted.

DC resis

measured

tan

ce

val

at

ues

the

4.

time

R44

and

current

of

no

R48

adjusting.

sig

nal.

with * marks

am for

the

emitte

r

Part

s Na

me

El

ectrolyt

ic

(t ubula r

El

ectrolytic

My lar

Ceramic

capacitor

type

capacito

capacitor

)

0.1 µ 50WV

0.01 µ !DOOP 2200P

0.04 µ 50

0.005µ

0.02µ 15V _20%

0.01 µ

0.04p

0.08µ 50V

M

ic

capacitor 1000P 50WV K

Carbon fi

Composition

Carbo

Sem

Ferr

BC IF

Tr T

Bias Ch Choke

lm

n film

i v ariab

le

ite-co

re anten

osillator

transformer 30

ansformer inp

ransform

oke coil

osc

coil C

ill

coil

er out ato

A

Resistor

res

istor RC ½ BE 1 kn K

resistor

na

: 0.5 20: 10

: 5 3

ut

put

r

Stock No.

30

µ

6W

V

3 µ

6W

V

50µ 6W

µ 6

5µ 6WV

30

µ

6W

50

µ 6WV

3µ

3WV

V M V K V K

40V

25V 25V

50 V J

¼ PY 5.

l0k

n B

50k

n B

l k n B

V

WV

V

K

V P

M +80%

+80%

_20% +80%

_

%

20

P

68kn l0 15k 39k 27kn 68kn 150n K 47k

4.7kn K

3.3 k n K 120 18k

1.8 47k

270kn

1.5

5.6kn K 820

l k n K

68D n J

47k

n K 13

4.7kn K 100

n K

3.3kn 33k

n K

470 n K

56

n K 1

2.2

n K 1

l.5kn K

680

n K

820

n K

10

n K

22

n K 1

6k

27

2.7kn K 68k 220n

kn J

n K n K

n K

n K n K

kn J

n J

kn K

n K

K

n K

n K n K

K

100

r

100

200

50W

50W 50W

5 P 50V D 1 P 25V D

250P

SRD ¼ SE

RD

0.3 322

258023 257517

258062 259032 257021 258518 258519 259019 259020 257501 276011 275111 274011 274013 245003 244004

291018 291012 291019 245004

2314 241627 233022 291106 18117

J

181151 181653 181658 181656

K K

181611 181553 181659 181609 181607 18155 181654 181107 181167

K

181706 181603 181610 181562 181601 181071 13336

133369 133521

133367

133447

133289

133363

133291 133292 133209

112378 112222 112374

112401

112293 159019 15104 159017 3112 316088 322005

430008 451045 316075 421006 421013

40

3449

33219 3320

33214

19

066

22067

1 1

2

1

1 1

No./100 uni

1 1 1 1 1

1 1 1

1

l 1 l

1 l l l 1 1 1 1 l 1 1 1 1 1 1

l

1 1

l l

l

1

1 1 1

1

t

Parts Name

Motor Case

Case