Trio JR-599 User Manual

'",

JR-589

~TR.IO

ALL SSB

BAND COMMUNICATIONS

~R-599

(I)

The

model

models: SPECIAL (M) These models may be identified plates The

attached

major

showninthe

Model

CUSTOM

CUSTOM SPECIAL

DELUXE

JR-599

CUSTOM

and

CUSTOM SPECIAL (X).

on

the

differences

table

below.

SSB,

SSB, FM,

(M)

SSB, FM, CW,

(X)

is

front

IF

FM

classified

DELUXE,

by

panels.

of

these models are

Filter

CW,

AM

VHF

Not 144 MHz

50

into

three

CUSTOM

their

name

Converter

equipped

converter

& 144 MHz

converter

RECEIVER

(2)

Optional availableatdealersofour modify' CUSTOM SPECIAL

as

We with a this

filters

and

sub-models CUSTOM

SPECIAL

(X) by

are sure

smart

that

their

users

and

manual.

crystal

converters

products

(M)

into

models

own

hands.

can

entertain

pleasant QSO

are

for users

DELUXE

CUSTOM

themselves

after

reading

made

to

and

11111

1111111I11111I1'·1111

Special

Circuit Description : . . . . . . . .

Controls and their Functions : . . . .

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessory Circuitry 22 Alignment : Maintenance 27 Schematic Diagram 29

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

II

'Ir!UIIIIIIW"III(JHlI IIItI1Illftfl

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ltllll

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Iltlllli:lllllllll!llllllllllllllllllllJllllllllllllrtlllllllllllHtllltlUlIIllItIIlI

Features....................................................

tllllllllllllll!lIIll11IIl11JllttlllTllllln

.. ..

10

..

15

..

25

..

30

Htlll..ltlIIIIIIIJUtItIIllIIlI

2 3

Iltl

CONTENTS

1111:1

'Ill I lflll"

1

SPECIAL

Qllmllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll1I11111l11111111l11l111111111111111111111111111111111111111111111111l1111111111111111111111111111111111111111111111111111lI111111111l1111111111111l11111111111111l11111111111111111111111111111111111111111111111l11111111l1111

1.

All solid receptionofthe freq

uency and standard

2.

Field amplifier and tu

be receivers characteristics.

3. IC

4.

employed

stability

VFO

low noise-factor

5. Precision variable

provided for main kHz receiving frequency readable

Hz.

Fixed

6. channels-spot

frequencies.

7. Amplifier

selector high for SSB signal.

8.

100

circuits

calibration available for every

turn

this

~SO.

9. Receiver incremental corporated

of

receiving frequencyorcorrectionofa

frequency ing dial during a operation, mitter.

state

range from 1.8to29.7

144 MHz

signal.

Effect

and

image characteristics

and

employing

type

capacitor

band

channel oscillators self-contained for 5

type

switch - distortionless

input

and

25

incorporated

of

main

set

as a frequency measuring set during

circuits insure high

amateur

bands

Transistor

mixer - a SIN, cross

as

IF

gain.

FET

output.

double

with

its

reception

AGC circuit

signal, whichisspecifically useful

kHz

tuning

provides

without

combined

as practised using a

bands

allocated over a

and

WWV's 10 MHz

(FET)

better

amplifier provides lligh

provides a highly-stable,

gear mechanism

with

linear characteristic

tuning

one

crystal

means

manipulation

dial covering a 25

complete

to

the

available for 5 specific

with

receptionofa

controlled

- precise frequency one

.dial as well as for use

tuning

(RIT)

for fme

transmitter-receiver

quality

MHz,

used as

modulation

than

vacuum

....

turn

nearest

time-constant

calibrator

complete

circuit in-

adjustment

of

main tun-

mated

the

and

- a 500

tuned

trans-

FEATURES

and

FM

positiontointerlock

the

MODE switch.

incorporated

- for

controlofcrystals for

attenuator

provide

40

switch -

transformerless (OTL)

distortion

combined

TX-599

extremely high-degree transmi Her-receiver

are

controlofthe

50

RF

of

11. Crystal SSB selected as desired by means depending ference with a SELECTIVITY AUTO with filter CIAL

12. Beat frequency oscillator (BFO) under receptions with an electronic switch provided for selection

RF

13. to 0, 20, selector serve as a field

14.

Output frequency with low

15.

Operable source as well as a DC 12 V source, as selected

by means

16. Provision MHz crystal converters. [Model CIAL (M) self-contains a 144 MHz

and Model CUSTOM SPECIAL (X)

and 144 MHz converter.]

17. A

available when model transmitter

18.

An operation,orthe is practicable when a JR-599 mitter under

LC filters serving asIFfilters for

receptions

on

the

AM

reception."

ofanappropriate

insertedinantenna

means

and

circuit

from an AC 100, 117,

of is

Receiver

for

60

strength

adopted

a voltage

made for

transmitter-receiver operated

Transmitter,

for

model

so-called cross-operated

operated

respectively, are easily

of

a MODE switch

condition

"An

in model CUSTOM SPE-

adjustmentofRF

dB

steps, as selected using a

enables·

measuring set.

factor

selector

mountinga50

JR-599

combination

and

Model

with their VFOs placed

mated

of

radio inter-

switch

its

electron

additional crystal

both

SSB

crystal.

input

model

- high

available.

in

conjunction

sets.

JR-599

type

power

220or240

switch.

CUST9M

a

combination

Receiver.

TX-599

placed in

operated

converter

operation

of

switch

and

CW

circuit

gain

by

to

audio

output

and 144

SPE-

both

50

with

VFO, model Trans-

V

10. Ring, linear SSB,

AM

and

ratio

FM signal

detectors

receptions

equipped

respectively.

for

19.

Communication

abletoinsure higher-quality reception.

speaker

"SP-55"

made

avail-

2

The block diagramofmodel JR-599 Receiver

as

showninFig. 1. This receiver generally operates

on

the

double

the

receiving signals ranging from 1.8to29.7

including the WWV's 10

converted by the 1st mixer ranging from 8.295 further converted by the 2nd mixer

IF

signalof3.395 MHz.

For

the

the receiver operatesonthe

superheterodyne

MHz

to

8.895 MHz, which are

receiving signals

system, in which

MHz

standard signal are

into

the 1stIFsignals

into

the 2nd

of

50 and 144

MHz

triple superheterodyne

system, in which the receiving signals are converted

by

initially

a crystal converter

band signals before they are applied

into

the 28 MHz

to

the

RF

unit.

1.

RF Unit (UC1120J)

The

signal entered from the through the protective diodes to the ANT coil this

RF

unit selected

frequency band

to

in

accordance with the

which the signal belongs.

ANT coils are provided independently for

antenna

passes

of

The

all receiving bands to insure the supreme performance of

the receiver set.

The

signal passing through the ANT coil

applied to

is

transistor

RF

amplifier Q1 comprising field effect

(FET)

3SK22, where

it

is

amplified

is

enough.

An FET, featuring a characteristic and a high pared with ordinary transistors, enables the inserted succeeding to a higher

The

Q.

RF

coils, similady to

the

better output

cross modulation

impedance com-

RF

amplifier to provide

the

ANT coils, are

RF

coil

provided independen tly for all receiving bands and mounted

1.8

corresponding

as a coil pack

The

amplified

to

29.7 MHzisapplied via

RF

to

the receiving bandtogate 1of1st

on

a printed circuit board.

signal

output

the

ranging frbm

RF

coil selected

mixer Q2,towhich the 1st local oscillator voltage

111111111111111111111111111111111111111111111111111111111111111111111111l1l11l11l11111111111111111111111111ll111111111111111111l111111111l11l1Illllllllll1111111111111'1l11111111111111l1111111111IlJllllllJll11111l1J1111l111111l1111l11111111111111111l111l1111l1111111l111lIllllllllllllllll1JllllllllllllllllllllllllllllllllllJllllllll1flllll

RING

DET

AM

OSC

r

C>-r

__

6M

__

~-'J

WXTAL U

ICONVERTORI

L

r-----~

I

:CONVERTOR

L

2M

XTAL I

...J

I

...1

OUTI

~I

l.-...,....--J

~BUF~ER

r

I

OSC

...I. .J.

=

-----

O.695MHz

=

5.5-4.9MHz

X,

29. X,36.895 X.37.395 " X,37.995 " X,,18.895 "

t--

895MHz

__

~BUFFER

r:::::::::::L

~

OSC

TOTXVFO

"

Fig.

4.9-55MHz

Block

1

T T

HETERODYNE XTAL

(X,-X,,)

Xl

-------

X,l

S'r

X,12.395 " X,15.859 " X,22.895 "

1----l<:l-f-+-_-jD)l-E_T~

L{>I-J

.1.

.L

=r----T

Xn3393.5kHz X,,3396.5 X,,3395.0 "

Diagram

"

ANL

~

POWER

FM

VR

AMP

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3

is

injected comprising signal with I st local oscillator

1st IF signal ranging from

Ist local oscillator Q3 employing of

9Vissupplied as power

ed

The

1

st

local oscillator Q3 are

throughgate

FET

type

3SK22

2SKl9

2. heterodynes

8.295to8.895 is

an

FET,

the

B voltage from

Thus, 1st

outputto

overtone

to

which a voltage

the

mixer

its

input

deliver

MHz.

oscillator

regulat-

Q2

the

supply.

oscillation coils and crystals provided for

incorporated

in a coil

pack.

The

output

taken

out and applied fed

through transistor lowers the

the

have terminal

to combined 2nd

mixer

The

RF circuit to

the

extending input

which being

Gates1and

signal

from

the

to

1st

buffer

to

the impedanceofits output

the

of

1st local oscillator Q3

collectorofoscillator transistor

mixer

signal sent from

transmitter

Q2. Partofthe

Q4 comprising

remote

terminal.

input

operating

type

Buffer

signal in

the

output

2SC460

order

remote

under

transmitter-receiver basis serve as the

signal.

unit

also

incorporates

from AGC

side

of

RF

automatically

2 to

RF

amplifier Q2,

controlled

amplifier

partofthe

control

transistor

the

gain

as follows:

Ql

are

AGC

kept

Q4

to

Q5

of

closed whennosignal presents with a voltageof4V developing across Zener diode D3, normally based from the source voltage, and outputofAGC presents this case, better

to

FET

AGC characteristic

control

used as

transistor Q5 when a signal

the

gainofRF

RF

amplifier Q1 provides a

compared

opened

amplifier Q1.In

with the

with ordinary

transistors.

2nd

IF

signal ou appliedto2ndIFamplifier Q3 (2SC460), where is

further

to

three

The

amplified.

output

types comprising diodes D4 consistingofcapacitor (IN60) and a

nator

transformer

Q8 (2SC460). Thus,

AF

CW

signal.

is

an

SSB and

signal applied as its

is

a

signal. While, FM

signal delivered from limiter Q8 (2SC460)

the

third

AF

Part

of capacitor ing output Q4, where Q5 and a

Cl3

of

diodes D 1

from

itisamplified

(2SA495)

current delivers two out

from

the amplifier ICQ2 resistor RF

R22

unit. Part resistor R23 While, collector thereby

the

side,isdirectly suppliedtothe S meter,

deflecting the

AGC voltage

tputof1st

IF amplifier ICQ2

signalof2ndIFamplifier Q3 is fed

of

detector

circuit: a ring

~

D7, an

AM

detector

C14 (33 PF) and diode D3

ratio

detector

connected

the

signals applied as its inpu t signals

The

AM input

the

ratio

comprising a discrimi-

succeedingtolimiter

ring

detector

signal

detector

detects

into

ratio

detects

another

detects

the

into

AM

AF the

into

signal.

2ndIFamplifier Q3isalso applied via

to

an AGC

and

diode

D1isfedtoan AGC amplifier

serving as

detector

circuit consist-

D2 (IN60).

and

appliedtotransistor

both

an

emitter

The

detected

follower

amplifier. Thus, transistor Q5

outputs:

emitter

(l0

of

(220

other

and

K.Q),

the

K.Q)

One

side for

2nd

to

above

output,

the

which is taken

AGC,isfedto1st

amplifier Q3

RF

amplifier Q 1 in

outputisalso fed via

to

squelch amplifier Q6.

taken

meter

out

depending

from

and,

on

via

the

detected.

is it

2.

IF Unit (UC1212J)

The

in

the

RF

this

IF

unit, where

ponent

of

has a pass

1stIFsignal delivered from 1st

unitisfedtoband pass filter B.P.F. in

the

unwanted

the

input

signalisrejected.

bandof600

kHz from

mixer

frequency com-

The

8.295to8.895

MHz. .

The1stIFsignalisthen

Ql

consisting

heterodyned

of

with

an

the frequency oscillator (VFO) signal. This signal then

conducted

applied to 1stIF

is

fed oncetothe

back

amplifier ICQ2 (TA 7045M).

appliedto2nd

FET

3SK22, where

output

to

the

signal

turn

into

of

the

filter

IF

unit, whereitis

unit

Q2

B.P.F.

mixer

it

variable

2nd

IF

and

The

time

constant AGC circuit is tor

C3

inserted succeedingtoAGC amplifier Q4

but

outside

The

rise-upofthe

determined

theIFunit.

collector-emitter resistance when amplifier transistor operation capacitor

is

When the AGC circuit

of

2ndIFamplifier Q3, AGC amplifierQ4offers a

of

Q3.

the

low impedance against time because and, therefore, constant

of

its

capacitor

current

conductsatonce

of

the above

by time

mentioned

constant

AGC circuit dependsonthe

of

AGC amplifier Q4

Q4

conducts

above-mentioned time

is

startedbythe

constant

capacitor

amplification characteristic

owingtothe time

C3

discharged momentarily.

capaci-

and

the

constant

output

C3

When

the

impedance against time

thereby bringing itself slowly becauseofcapacitor

Thus,

the

outputof2nd

IF amplifieriscut

off, on

contrary, AGC amplifier Q4 increases its

it

follows

constant

to

the

C3

that

AGC amplifierQ4provides an

capacitor C3,

cut-off

condition

charged gradually.

ideal quick-start slow-release characteristic for its

operation. operation switch the

quick AGC operation.

position

(Note

applies to a case where the FUNCTION

is

placed in

of

FUNCTION switch AGC amplifier provides an AGC characteristic above characteristic because

of

charge

time

that

the

constant

the

above-mentioned AGC

(AGC)

For

of

FAST

just

position for

the

(AGC) SLOW

oppositetothe

the

discharge and

capacitor C3

Q4

conducted

reversely.)

the

way,

the

By

outputofAGC transistor Q5

applied via resistor R23 to squelch amplifier Q6

is

(2SC733) base controlling

amplified there and

of

buffer transistor Q7 (2SC733),

the

base voltage with As a result, buffer transistor Q7 controls amplifier perform a squelch

Ql

in the

AF

operation

then

appliedtothe

the

unit with its

under

controlofthe

input

output

thereby

signal.

AF

inpu t signal.

Buffer transistor Q7,

an

acts as impedance or

FM signal with a lower impedance

emitter

to

conduct

volume control outside the

the

MODE switch from

mentioned

follower providing a higher

the

detected

IF

the

2nd

unit,asselected by

above, also

SSB,

to

IF

amplifier Q3

CW,

the

AM

AF

output.

3.

Filter Unit (UC1213J)

The

filter

unit

is inserted outside

the

between of

1stIFamplifier Q2 in

This

outputof2nd

unit

incorporates four fllters with diode switches provided for signals respectively. These thatanappropriate

filterisselected by meansofa

mixer

the

latter

the

SSB,

CW,

filters are so designed

diode switch when the MODE switch

Q2 and

unit.

AM

the

IF

the

and FM

is

placed in

unit

input

the position for a desired receiving signal.

that

the

Now, suppose

the

in

SSB position for reception

signal. This applies a voltage

the

terminal for causes a

currenttoflow from the terminal through

resistor RI

resistors R2 (4.7

diode switchoffilter

(220

D)

kD)

MODE switchisplaced

of

13.8 Vtothe SSB

in

the

two directions to

and R3

(220

D).

the SSB

XF-l.

This

Thus, the

to

current passing resistor R2 flows current (1 resistor R3 flows as resistor

R22 tion a positive voltage

kD)

(1

through

to

R4

diode D 1(lN60) and resistor R21

the

earth. While, the

(4.7

kD),

kD)tothe

the

diode D2

earth.

of

forward

Under

approx. 2.3 Visbuilt

as

current

(lN60)

the

forward

passing

through

and resistor

above condi-

up across resistors R21 and R22 to the earth. This

to

applies a backward voltage

(l

N60). As a result, diodes D 1 and D2 turns

D8 ON and diodes D3 allowing only XF-l

from 2nd The ratio OFF

The

of

4.7 Hence, DC resistance of

the

mH),

of

conditionsofthe

XF-l

kD

and an external capacitanceof33 pF.

the

filter is so designed

resistors for diode switch as

of

printed

the

capacitanceoflead wires and

capacitance as

Other

filters for

through

the

SSB signaltopass

mixer

the

Q1to1stIFamplifier Q2.

signals

under

diodesisapprox.70dB.

filter requiresanexternal resistance

4.7

kD

and

circuit board and coilsL1and L2

the

external capacitanceof33 pF.

the

diodes D3 through

D8 turns

OFF,

through

the above ON and

thatitemploys the

the

internal capacitances

other

CW,

AM

and FM signals

thereby

fllter

external

stray

XF-2, XF-3 and a LC circuit are selected by their diode switches ed above when CW,

AM

and FM positions, respectively.

4.

VFO

The

VFO

justinthe

the

Unit (UC0116J)

Unit

incorporates a variable frequen-

cy oscillator circuit, which delivers

same

manner

as describ-

MODE switch is placed in

the

output

the

frequencies varied over a frequency rangeof600 kHz from 5.5 to 4.9 MHz order

to convert

the

l.st

8.895 to 8.295 MHz

into

to

the

2nd

IF

signals ranging from

the

2nd

IF

mixer in

signal

of

3.395 MHz.

A sub-dial scale is calibrated for

frequency range from graduation 0

the

to

gradation

above

600atintervalsof1 kHz.

The

variable frequency osicllator consists

oscillator transistor Q1 (3SK22) arranged

modified Clapp socillator circuit and stably with

The

output

buffer

transistor Q2

of

variable frequency oscillator

operate

(2SKI9).

of

as

quite

deliversed through buffer transistor Q2 and one

of

stage

harmomic filter to

the

output

circuit, a

Darlington circuit comprising amplifier transistors

Q3 and Q4, Hence, the

the

stably against

variationofits load.

output

circuit operate

(l

a

is

5

The

YFO

incremen

voltage

The

tal RIT

generated incorporatedinthe a receiver relay during combined

the

YFO

SELECT

panel provides

mentioned

Note removed its

from

adjustment

unit

also

incorporates

tuning

(RIT)

circuit

in its

circuit.

is

operated

generator

UC I0 IOJUnit

the

transmitter-receiver

frequency

dial.

RIT

voltage.

that

means

the

regardless

The

RIT

for

YFO

Unit

controlling

its caseormodified

needs a high degreeofadjustment

technique.

5.

Carrier (BFO)

The

carrier

oscillator

transistor (2SC460)

The

(BFO)

BFO

Q2

and crystals

diode switch consisting

(I

SI555),

ring

inserts a

detector

Unit

(UC1214J)

unit

incorporates

circuit.

circuit, consisting mainlyofoscillator

(2SC460),

X-I,

of

diodes DI

beatorcarrier

for

reception

signal.

output

capaci

transistor

frequencies are

Oscillator and its of

trimmer

parallel with crystal X I

Q2isthe

torsTCI

through

Selectionofa crystal for of

the

CW,

LSBorUSB signalisperformed

above-mentioned

Suppose, placedinthe signal. This applies a Y

to

the

LSB

diode

switch as follows:

for

example,

LSB

position

power

terminalofthe

that

for

As a result, a forward voltage LSB

terminal

choke

internal This in

conducting

by

with

the

base

and

coil

resistance

turn

Hence, oscillator

at

the

X3 crystal

The

beat

the

same

of

the

USBorCW

through

resistor

L4(ImH)todiode

the

diode

since

becauseofthe

inserts crystal

diode

via

capacitor

emitter

of

oscillator

transistor

frequency,or3393.5

frequency

oscillator

mannerasmentioned

signal. But, its

X3

Q I

a receive

from

the

circuit, which

and

actuated

reception

operation,

of

control

the

under

and

setting

on

the

should

never be

internally

a beat

buffer

X-2

frequency

transistor Q2

and

X-3

with

through

frequencyinthe

of

the

SSB

or

Pierce B-E circuit

adjusted

by

TC3 inserted in

X3 respectively.

the

BFO in

reception

by the

the

MODE

switch

receptionofa LSB

supply

voltageof13.8

Carrier (BFO) Unit.

is

applied from

R4

(22

kS1)

D4(IS1555), there-

the

diode

offers

voltage applied.

connected

C6

(22

pF)

in series

across

transistor

starts

in oscillation

kHz.

operates

above

center

for

reception

frequency

just

RIT

by

the

varies

of

front

above-

since

D4

CW

means

the

and

a low

the

Q

I.

in

3.395 reception frequency

is

IF the makesitdifficulttoreceive

MHz

is

shifted

of

the

zero beats

CW

by

700

to

signal because the

with

theoutput

800

Hz

signalof2nd

amplifier Q3 in this case owingtothe fact

output

signal'iscontinuous

the

wave,

incoming

and

frequen-

for

center

that

this

cy.

The

above-mentioned

is

accomplished

cy

When position, terminal kS1)

turning through therefore, and emi oscillator

frequency cy. adjusted TC

a

I, which provides

the

MODE

a DC voltageisapplied

of

this carrier

and

choke

the

insert

coil

diode

the

tterofoscilla

transistor

The

a little

beat

lower

tone

through

frequencyby±200

The

output

of

by

shiftofthe

the

diode

YFO

switch

frequen-

as follows:

switchisplacedinthe

from

the

CWR

unit

Ll

(I

ON. This

without

via resistor

mH) grounds

any

capacitor

to

diode

crystal X2

RI

crystal directly across the base

tor

for

the

Q2

the

use

means

transistor

starts than

Q I. As a result, .

in oscillation at a

the crystal frequen-

CW

reception

of

trimmer

for

varying the BFO

may

capacitor

Hz.

BFO

oscillator

transistor

Q I

CW

(2.2

D I,

and,

be

is applied via a voltage divider circuit comprising capacitor

transistor Q2. emitter low as a of

the

6.

The

is

rates a generates a

from for of

accomplished

The

mainly

(2SC373)

TransistorQ1, ,«ith kHz. collector

means for fine

CII

(10

Buffer follower, offers an bout

100

output

25 kHz / 100

voltage

25

kHz/100

marker

3.5to28

calibration

a

25

MHzatintervalsof25or100

of

or

100

by marker of

four

and

one

the100

kHz

Trimmer

circuitofoscilla

pF)

and

transistor

S1,

thereby

and

frequency.

kHz

Marker

kHz

signal

generator

signal over a

the

main

kHz

marker meansofthe signal

generator

transistors Q I

100

kHz

actingasan

crystalata

capacitor

tor

adjustment

CI3

(22

pF)tobuffer

Q2,

acting

output

impedance

minimizing variation

Unit

(UC1505J)

marker

unit

incorpo-

circuit which

frequency

tuning

dial. Selection

signal

may

FUNCTION

circuit

consists

through

crystal

(HC/!3U).

oscillator, oscillates

frequency

TCIinserted

transistor

of

the

Q I provides

oscillator fre-

as an

range

kHz

be

switch.

Q4

of

100

in ,the

as

quency.

The

capacitor

outputofoscillator

C4

(33

pF)todiode

transistor

D I,

Q Iisfed via

through

which

6

itisshaped period free-running multivibrator consisti.ng Q2 and Q3 at a period multivibrator has a free-running period

of

into

one

a pulsed wavefonn occuringata

fourth

the

100 kHz and drives a

of

just

25

kHz since the

of

transistors

about

25

kHz.

The

output amplifier transistor Q4, in the rectangular wavefonn and delivered to amplifier Q 1 in the

When

100 kHz CAL position

is

grounded via

of

the

multivibratorisapplied to

through

RF

Unit.

the

FUNCTION switchisplaced in the

the

MS

whichitis

emitteroftransistor Q2

terminal

of

shaped

RF

this unit,

turning transistor Q2 off. This disables the multi-

and

vibrator

allows transistor Q3

mere amplifier. As a result,

the

signal from as

they

are to amplifier transistor Q4 and, there-

to

fore,

7.

RF

Regulated

The

regulated

oscillator transistor are

amplifier Q

Power

1.

Supply Unit (UC1010J)

power

supply

to

operate as a

the

100 kHz pulsed

unit

conducted

provides

necessary operating voltages for the VFO, BFO and

it

1st local oscillator. Especially,

the

with least variation to circuit)

to

prevent

VFO (including the

the

VFO from changing its

oscillator frequency with variation

supplies a voltage

RIT

of

the supply

voltage.

The

unit

consists mainlyoffour transistors Q1

Q2

(2SA497),

(2SC373), Q3 (2SC372) and Q4

(2SC372) and reference diode D 1 (RD6A).

tor

Transis

Q1isthe current

which controls the

an

error

with the

error

Q4

is the

serves as

voltage. Transistors Q2 and Q3 are voltage amplifier transistors. Transistor error

voltage

the

temperature-characteristic cancelling

input

detector

con

trol transistor,

current

in accordance

transistor and also

transistor for transistor Q3. Diode D1 (RD6A) is the

zener diode for producing a reference voltage.

The

error detector stages

of

regulated

voltage

Q4

is

amplified

transistors

power

Q2

supply

detected

through

by

error

two amplifier

and Q3. This allows

unit

to

provide

voltage

the

an

ex-

tremely excellent voltage stability.

The

voltage stability due

change dependsonthe of

the reference voltage diode and the error voltage

temperature

to

a

temperature

characteristics

amplifIer circuit.

The

reference voltage diode used is zener diode

RD6A, which has a

temperature

coefficientofO.

While,

the

error

voltage amplifier circuit consists ot amplifier transistors Q2 and Q3 with transistor Q3 coupled voltage tion

through

detector

of

its characteristic duetotemperature because transistors Q3 and perature characteristics.

t,dnsistor Q 1 suffers from characteristic due is

a silicon PNP transistor.

addition,

In

so arranged

tor

Q1 againstanexcessive current which might be

flowed through

terminal

is

ordinary regulated

Resistors RIO

VR2 are provided to

voltages

to

differential

connection

diode Q4, and offers least varia-

Q4

cancel their tem-

Further,

almost

to

temperature change because it

current

no

changeofits

this regulated power supply

thatitprotects

the

shorted

to earth, as

power

andR11

be fed

to

current

control

transistor when the

encountered

supply circuits.

and variable resistor

produce

the

RIT

necessary

circuit in

to

change

control

unit

transis-

output

the

error

RIT

VFO

unit.

8. AF Unit (UC1307J)

The

AF

unit

incorporates

circuit to

operate circuit amplifies variable resistor control, from squelch

connected

is

tor

circuits to 2ndIFamplifier transistor Q3. The

through the MODE switch and detec-

AF

amplifier circuit, consisting mainly

the

VR4

the

speaker. This amplifier

AF

(l0

buffer

an

AF

amplifier

output

kn),

delivered via

or

the

AF

transistor Q7, which

volume

four amplifier transistor Q1 (2SC733), Q2

Q4

(2SC734), Q3 (2SD90) and

(2SB473), operates

as follows:

The

AF

signal from squelch

is

Q7

conducted

via capacitor

the

signalisamplified on

basis.

The

Cl

output

from

the

IN terminalofthe unit

to

amplifier transistor Q1,where

the

of

amplifier transistor

amplified by amplifier transistor Q2 on

voltage and

power

amplification bases.

buffer

transistor

voltage amplification

Ql

both

the

The

output signal from amplifier transistor Q2isapplied to a power Q4, where it

tion basis. Since transistors Q3 and through a the formerless (OTL) circuit and, therefore, deliver output compared with

amplifier consisting

is

amplified

on

comprementary

preceding circuit,

they

signal with extremely small

that

of

the

of

transistors Q3 and

the

power

connection

form an

amplifica-

Q4

are coupled

circuit to

output

distortion

conventional

trans-

the

power

is

in

of

is

7

transformer

coupled stage. A negative voltage is fed of

transistors

to

the

input reducing lowering

improvement

negative DC of

transistor because series

and

at

the

jointoftransistors Q3

Variable resistor circuit VR

of

I for

transistors Q3 and

The

variation compensated parallel (33

with

pF)

negative

Q3 and

Q4

sideoftransistor

the

disortionofoutput

the

output

of

impedance

damping

currentisfed back

Q4

to

the

of

transistors

this reduces

Q2,

the

VRIinsertedinthe transistor adjustment

by

the

Q2isthe

Q4

of

the

thermister

semi-fixed

of

wr.en

above

is a voltage cancelling

feedback

voltage

transistor Q2.

9. Fixed Channel

The

fixed transistor oscillator acting

Q I

circuit

as a buffer.

Oscillator

with

a fixed channel crystal selected by the CH

SELECT

switch

onaseparate

the fixed

through where

. signal

channel

The

output

emitter

itisheterodyned

under

reception.

Unit

(UC0113J)

channel

arranged

and

transistor

among

printed

unit

so astoform

emitter

Q I

those which are

circuit

signals.

of

oscillator transistor Q2isfed

follower

to

the

preceding

back

from

the

joint

via resistor

Q2,

factor. In

emitter

Q3

and

thereby

signal

with

from

of

Q4

RIO(IOk.Q)

not

only

further

the

resultant

addition,

the

collector

transistor

connected

variationofthe voltage

and

Q4.

collector

semi-fixed

the

supply

no

signal presents.

supply

TH1(5T32)

control.

capacitor

to

the

collector

incorporates

control

current

current inserted in

Capacitor

for

side

oscillator

a Pierce C-G

follower

transistor

operatesinconjunction

mounted

board

Q2

with

for

to

2nd

the

fixed channel

reception

mixer

but

Q2

C7

the

Q2

of

Q2,

in

to

of

RF

amplifier Q I

FET

2SKI9

and Local oscillators Q3 transistor quencies operating

a

respectively.

The ing channel channel ANT itisfed

Thus, signal output of

is

28 to

51.7 signal oscillator Q3 MHz. These input

A and D2 is this

and

The

an

AGCtoimprove the selectivity.

In

inserted amplifier resonance

widen its

with improvement of

the

(S)

2SC785, provide local oscillator fre-

of

22

with

input

signal, i.e.

frequency

A

or

B,isapplied from

input

circuitofthe

through

mixer

of

50

to

of

local oscillator Q3

29.7

MHz.

to

53.4

MHz,

with

the

into HF

circuitofthe

protective

insertedinthe

converter

mixer

comprisinganFET.

RF

amplifier stageisoperated

addition,

in

each

and

frequency

substantial

selection

of

converter

144

MHz

Crystal Converter CC-29 (UC2301J)

and

the

range

from

mixer

FET

3SK22

and

23.7

A and B

the

from

51.7

Q2

employ

respectively.

Q4,

each comprising

MHz

for

the

channel

signalina receiv-

50 to

51.7

to

53.4

MHz for

the

antennatothe

signals,

MHz for

converter, from which

RF

amplifier

Q2

heterodynes

51.7

MHz

Q2tomixer

theAchannel

with

the

22 MHz

intoanHF

For

theBchannel

the

mixer

23.7

MHz

an

HF

signals are

RF

amplifier unit.

heterodynes

output

signalof28to29.7

then

signal

of

fed

circuit comprising diodes D I

ANT

input

circuit

for

protection

a variable

tuning

the

mixer

of

pass band

of

the

the sensitivity

of

RF

capacity

capacitor

circuit for the

stages

tuning

to

circuit

simultaneously

A

or

B channel for

and

selectivity

amplifier

vary the

(Utility model applied for).

mixer

Q2.

signal

the

local

to

the

under

RF

and

an

of

is

10. Crystal Converter

The

TRIO plied with and

the

provide

MHz

VHF

(A)50MHz

The

mainly

model

the

50 MHz Crystal

144

MHz Crystal

means

for

reception

bands.

Crystal Converter CC-69 (UC-2302J)

50 MHz crystal

of

RF

amplifier Q I,

local oscillators Q3 and

circuit

and

block diagrams given in Fig.

JR-599

SPECIAL (X) are sup-

Converter

of

the

converter

mixer

Q4,asshown

(CC-69)

(CC-29)

50

and

consists

Q2

and

144

two

in the

2.

to

The

144

MHz crystal mainly oscillators Q3

ll1

the

of

RF

circuit

amplifier Q I,

and

3.

RF

FET

amplifier

2SK19

Q I

and Local oscillators Q3

transistor quencies operating respectively.

2SC535, provide local oscillator fre-

of

I 16

and

with

the A and B

Tripler

converter

mixer

Q4,

and

tripler

block

diagrams given in Fig.

and

FET

and

mixer

3SK22

Q4,

Q2

each

I 17.7 MHz for the

channel

Q5,

consistingoftransis-

consisJs

Q2,

2 local

Q5,asshown

employ

an

respectively.

comprising

mixer

signals,

8

tor

2SC384, triples the frequencyofeach local

oscillator

output

to

obtain the above-

mentioned local oscillator frequencies.

input

The

ing frequency range from 144

signal, i.e. the signal in a receiv-

to

145.7

MHz

for channel Aorfrom 145.7to147.4 MHz for channel ANT it

is fed through

B,isapplied from the antennatothe

input

circuitofthe

RF

converter, from which

amplifier Q1 to mixer Q2.

Thus, mixer Q2 heterodynes the A channel

of

signal output

144to145.7

of

tripler Q3,

oscillator frequency,

29.7 MHz.

to

147.4 MHz, signal with Q3, or

1l1111111111111ll11l111ll11ll1ll1ll111ll11ll111ll11111tllllllllllllllIIlIllIIIll1ll1llllllllllllllllllllllll1I111111111ll1l111111111ll111l1111ll1ll1ll1l1ll1ll1ll1l1ll1ll1ll111l1111ll111l1l1l11111111111l1ll1ll1l11111111l11l1ll1l1l11l1111111ll11l1111111111111111111111l111ll11ll11l1111111111111111111111111111111111Il1tllltltllllllll111111l

For

the

117.7

the

B channel local oscillator frequency,

MHz

with the 116

or

the A channel local

MHz

intoanHF signalof28 to

the B channel signalof145.7

the

mixer heterodynes the

MHz

output

oftripler

into

an HF signal HF signals are then fed to the the

RF

amplifier unit.

of

28

to

29.7 input

MHz.

These

circuit

of

A protective circuit compnsmg diodes D1

is

and D2

inserted in the ANT

this converter for protection

and

mixer, comprisinganFET

The RF amplifier stage

input

circuit

of

RF

amplifier

respectively.

is

operated under

of

an AGC to improve the selectivity.

In addition, a variable capacitor diodes inserted in each tuning circuit for the amplifier resonance frequency

and

the mixer stages

to

of

tuning circuit and

RF

vary the

widen its substantial pass band simultaneously

of

the

A

or

with selection

of

improvement of

the converter (Utility model applied for).

the sensitivity and selectivity

B channel for

is

.

ANT

Fig.

2

50

MHz Crystal Converter (CC·69)

A CHANNEL B CHANNEL

/

ANT

A CHANNEL B CHANNEL

(b)

50MHz

51.7MHz·~

23.7MHz

Block

144MHz~145.7MHz

145.7MHz~1474MHz

28MHz

~517MHz

OUTPUT

-29.

53.4MHz

FREQUENCY

7MHz

Fig.

3

144

MHz

Crystal

Converter (CC·29)

IlrurnrffllOllllrlllllllllllllllllllllllllllllllllllllllllllllllllllllllll11Illlllllllllllltlllllllllllllllllllllllllllll1l11l11111111111111lUI111111111111111111111111111111111111111111111111111I11111111llllllllllltlllllllllllllllllllllllllllllllllllllllllll111111111I11111111111111111111111111111111111111111111111111111111111111111"

(bl

Block

9

CONTROLS

AND

THEIR

Front

Panel

Controls

(1)

BAND

(Main Band Selector Switch)

Main band selector switch BAND, a 10position selection 8 bands allocated over a frequency range from

1.8

signal

(2)

5-position

rotary

of

to

29.1 MHz

andanexternal band.

BAND

Auxiliary band selector switch BAND, a

(Auxiliary

FUNCTIONS

(Photo 1)

switch provides means for

a desired receiving band among

the

rotary

WWV's

Band Selector Switch)

switch, provides means

10 MHz standard

the

to

select either HF or VHF band as the operating band. When this switch

position,

switch effective

tion as mentioned in item positions,

crystal converter in the receiver circuit for

reception tively. (Note model JR-599 CUSTOM DELUXE provided that MHz This the

converter.)

(3) POWER (Power Switch)

The POWER switch provid power ON-OFF control applies powertothe places the receiver in the runing condition.

(4)

RIT

Control RIT provides means for fine adjust-

it

makes

to

select any band for recep-

the

switch inserts a 50 or 144

of

the 50 or 144 MHz band respec-

that

this switchisineffective on

the

modelisoperated with

crystal converter mounted additionally.

is

because said modelismarketed without

to

the

receiver. In

(Receiver Incremental

is

placed in the HF

the

main band selector

(1)

above. In

no

the

ON position,

power supply circuit and

Tuning

Control)

other

MHz

50 or 144

it

@----

@

----~=-====-~d1

===,.l'1':

®

(])

;==~;;;;;;;;;r_-;r-~~==-;;;i----

®

l"r...,-:=~~---

cID

®

......

(JI

a"",

-JA-

BANC

•••

® ®

@

Photo1Front

@

Panel

CD

®

10

ment

receiver mitter

the

of

a recelvmg frequency when this

is

operated

with model TX-599 Trans-

as a combined transmitter-receiver.

If

the user want to operate this receiver

QSO basis, set up

the

receiver and model

on

TX-599 for a combined transmitter-receiver operation.

Then, tuning transmitting frequency station O.

Tune

frequency to

the

If

set the BAND switches and main

dial

on

the receiver for the riominal

of

with

a desired

the

RIT switch placed in position

partner

the receivertothe actual transmitting

of

the

partner

station and proceed

QSO operation.

the receiving frequency shifts during the

QSO operation, re-tune the receiver to the

current controltoand

receiving frequency by turning the

fro, insteadofmanipulating the

RIT

main tuning dial. Otherwise, the transmitting frequency

(5) PRESELECTOR (RF

of

the local station will be shifted.

Amplifier

Tuning

controll

The PRESELECTOR switchisthe tuning

control

for

the

RF

amplifier stage

of

this

receiver. This control should be adjusted until

the

receiver provides the maximum sensitivity.

(6) SQUELCH (Squelch Control)

The

SQUELCH control serves as the ON-

OFF

control for operations. wise from

That

the squelch control to the audio frequency circuit tionofthe

incoming signal.

While, pulling the

of

its normal position turns the RIT switch off.

(7) (8)

trol

VFO

SELECT -

VFO

and Selectivity Selector Switch)

The

VFO SELECT - SELECTIVITY con-

is

a composite switch consistingofa VFO

both

the squelch and RIT

is, turning this control clock-

OFF

position intensity

IF

output

is

disabled for regenera-

knobofthis

SELECTIVITY

until the

control

(Composite

the

out

and selectivity selector switches.

The

VFO SELECT switch, a 4-position

rotary

switch forming the

upper

knob

of

the VFO SELECT-SELECTIVITY switch, provides means

select a desired VFO

under

the

to combined transmitter-receiver operation models switch should be

JR-599

and TX-599. Normally, this

kept

in the NORM position.

of

The

SELECTIVITY switch, a 5-position

rotary

switch forming the lower

knob

of

the VFO SELECT-SENSITIVITY switch, provides means

on

reception

ference. In placed delivers

the

to

select an

type

of

other

at

a position for which the speaker

the

sound

adequateIFband

of

emission for the signal

the

condition

of

radio inter-

words, this switch should be

output

whichismost easy

depending

under

to

hear.

(9) (10)

composite switch consisting control and an

the switch, output. creases the volumeofspeaker

switch forming GAIN insert a resistance step in the

AF

GAIN

- RF

ATT

(CompositeAFGain-

RF

Attenuator

The

AF GAIN -

The

AF GAIN control, a control forming

upper

is

knob

the

Selector Switch)

RF

ATT controlisa

of

an

RF

ATT switch.

of

the

AF

GAIN -

volume control for the speaker

Turning this control clockwise

output.

The

RF

ATT switch, a 4-position

the

RF

lower

ATT

switch, provides means to

knob

attenuatorof60dBat20dB

input

circuit

of

the

RF

AF

RF

of

the AF

amplifier

GAIN

ATT

in-

rotary

stage. Using this switch, therefore, model JR-599

may be used

to

make measurentofa

field intensity.

(11) PHONES (Phone Jack)

The

PHONES

tion

of

a head

(12) FUNCTION (Function Selector Switch)

The

FUNCTION switch, a 6-position

jackisprovided for connec-

phone

plug.

rotary switch, provides meanstoplace model JR-599 under

a desired functional condition such as a stand-by operation, monitor, sJow and fast responses and calibration, as obtained by turn-

ing the switch in the STABY, MONI, SLOW, FAST, 100 kHz and

25

kHz positions respec-

tively.

(13) MODE (Receiver Mode Selector Switch)

The

MODE switch, a 6-position

rotary

switch, provides means to select an adequate

mode

the

of

the receiver operation depending on

type

of

emission

of

the signal

to

received.

be

11

t

so

on

(a)

CW

(Continuous

Switch operate tinuous telegraph

(b)

LSB

Switch

position the wave for

codes.

(Lower

position operatethe signal for

receptionofthe

bands. This

custom

to

use transmission MHz bands.

(c) USB

operate signal for 14 MHz rule

Switch

band.

to

use

(Upper

position

the

reception

the mission and

the 14 MHz

Users select a of

a SSB

to

damodulate

(d)

AM

should

wrong

band.

(Amplitude

Switch operate

the

receiveronan tude-modulated radiotelephone

If

the

receiverisoperated

ing

SSB signal placedinthis speaker pu1.When incoming

below turn tion. MHz USB

(e) AM.N

suppress

the

mere

operating

signals belonging

7 MHz

the

MODE

For

the

bandorhigher,

position.

(Automatic

Switch

position

the

atomospherics,

Wave)

CW

is

provided

receiver

is

becauseitisaninternational

and

on

an

incoming

reception

Side

Band)

LSB is

on

an

incoming

3.5

the

LSB

of

SSB signal for

receptionofthe

of

the

provided

and

7.5 MHz

3.5

Sideband)

USB

is

provided

receiver

of

on

the

an

incoming

bands

above

Thisisbecause it is a general

USBofSSB signal

reception

of

the

for

bands

band.

be careful

sideband

Otherwise,

the

incoming

enough

signal for

the

receiver fails

signalatall.

reception

Modulation)

position

AM

is

provided

incoming

signal for

reception

speech.

on

an incom-

with

the

MODE

AM

position

numbles

band,

therefore,

switch

signals belonging

AM.N is

annoying

motor

out

the

in

turn

Noise

pulsed

by

mistake,

its

sound

receiver

to

the

never fail

the

LSB posi-

to

the

switchinthe

Suppression)

provided

noises

cars engine

with

to

con-

Morse

to

LSB

and

to

USB

the

trans-

above

not

ampliof

the

switch

the

out-

the

bands

the

14

due

and

to

to to

appealing

speaker

during

signal fromanAM

(f) FM

(Frequency

Thisisthe operate signal

crystal circui

(14) S

the

with

converter

1.

METER

TheSMETER

7

signal

under

reception,

dB.

The

scaleisso

reads40dB

(15) Sub-dial Scale

The

whenitdeflectstograduation

sub-dial scaleisthe belowarectangular center

tions tion,

sectionoffront

The

scale bears

which,

are

starting

calibrated circumferenece range

from0to

kHz.

This scale, being

the

main

tuning graduation tuning

for

dial,

orafrequency

kHz.

(16) Main Dial Scale

The

main dial scaleisthe keptinposition main

tuning

The tions, graduations,

dial

scale bears

which,

are

circumferenceofthe

to

being

tuned

dial.

25 kHz

marked

the

receiving

of

may

from 0 former latter

red figures. Hence,itprovides indicating receiver tuning

Because

this

scale

in

reception

station.

Modulation)

switch

receiver

the

built-in 50

inserted

indicates

calibrated

small

panel.

the

blue

with

alternately

of

the

600

MHzatintervals

mounted

dial,

shifts

everyone

against

with

spring

the

starting

calibrated

disc for

and

with

through

its

constructional

be

calibrated

the

sound

position

on

as read

disc scale

an

of

an

incoming

or

in

the

on

that

output

incoming

provided

144

receiver

level

of

its scale

the

mounted

windowatthe

and

orange gradua-

the

zero

blue gradua-

around

disc

forafrequency

on

the

shaft

its

complete

band

disc scale

the

bottom

position

by

turnofthe

covering 25

tightly

sideofthe

pressure. black with

and

red gradua-

the

zero

around

the

frequency

25

to

50

black figures

ranges

kHz,

and

means

frequencytowhich

the

use

of

the

characteristic,

quite

easily by

of

to

FM

MHz

the

meter

S-9.

upper

the

of

25

of

one

black

entire

the the

for

the

main

in

12

Trio JR-599 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual