Sangean MS-103 User manual

MODEL:

MS-103

FM/MW/SW1/SW2-10

MODEL:

MS-103L

FM/MW/LW/SW1-9

BAND

RECEIVER

AKRLNK.

SIO/FO5

Service

Manual

SANGEAN

PELL

CONTENTS

SPEC

IEIC

ATION:

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TUNER

ALIGNMENT

INSTRUCTION

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8-11

TEST

EQUIPMENT

CONNECTION

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TUNER

ADJUSTMENT

POINTS

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DISASSEMBLY

DIAGRAM

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SCHEMATIC.

DIAGRAM

(1038)

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SCHEMATIC

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DIAGRAM

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PCB

BOTTOM

VIEW

DIAGRAM

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PCB

BOTTOM

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DISASSEMBLY

INSTRUCTION

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SPECIFICATIONS

ELECTRICAL

PERFORMANCE

Tuning

range

Intermediate

freq.

;

+0.1

Nominal

Bure

gonna

[26

Useable

sens.

(S/N

30db)

98MHz

90MHz

Calibration

98MHz

480

ewe

200

[400

Audio

fidelity

(—6db)

98MHz

4000

3600

3db

Limiting

(10mV)

98MHz

ro)

N}]M

a};o

ToewiHe

[20

oowHe

geMHz

Output

power

10%

T.H.D.

98MHz

150

120

Power

consumption

R.O.

98MHz

110

98MHz

2eMHe

Am.

suppression

98MHz

genre

S/N

Ratio

(mV)

98MHz

Supply

voltage

SOmW

Load

ohm

(o7)

oe)

np}

D)}oO

WIR

fo)

jo}

ie}

Modulation

1kHz

22.5kHz

Dev.

SW:

ELECTRICAL

PERFORMANCE

(only

MS-103)

Test

Item

Condition

Min.

Tuning

range

Max.

Intermediate

freq.

2.75MHz

Max.

sens.

4.0MHz

5.0MHz

2.75MHz

4.0MHz

5.O0MHz

2.5MHz

Calibration

4.0MHz

5.0MHz

5.0MHe

2.0MHz

4.oNe

Supply

voitage

5SOmW

Load

ohm

Nominal

afa

ain

wWiNy

Useable

sens.

(S/N

20db)

w N

mfo

aln

O}N

NIi@[=|anlala

O/HAIAIO;O!oO

;

Modulation

1kHz

30%

Mod.

ANN:

ake

icc

Fale

aenio

aNEN

ELECTRICAL

PERFORMANCE

Min

Tuning

range

Max.

1640

1620

kHz

460

Intermediate

freq.

+3.5

kHz

Max.

sens.

1000kHz

1400kHz

dby

{o)

Useable

sens.

(S/N

20db)

1000kHz

db.

Sp]

oy,

Raa

Oy]

is)

NP oO

ajay

Oo;

oO1o

kHz

NUN

600kH2

Calibration

1000kKHz

1400kHz

+40

250

Freq.

Response

(—6db)

1000kHz

2400

2000

;

TOOoKTE

T.H.D.

(5mV)

1000kHz

Whistle

modulation

(5mV)

21F/3IF

Lowest

battery

voltage

1000kHz

Tuning

indicator

sens

S/N

Ratio

(SmV)

Supply

voltage

50mWw

xix

1000kHz

Load

ohm

Modulation

1kKHz

30%

Mod.

ie)

ELECTRICAL

PERFORMANCE

(only

MS-103L)

Test

Item

Condition

Nominal

Limit

Tuning

range

Max

281

Intermediate

freq.

170kHz

Max.

sens.

220kKHz

270kHz

170kHz

220kHz

270kHz

170kHz

Calibration

220kHz

270kHz

Supply

voltage

50mW

Load

ohm

Useable

sens.

(S/N

20db)

ie)

={M]

Oo;

fal

‘

Modulation

1kHz

30%

Mod.

ELECTRICAL

PERFORMANCE

7.0

7.52

7.05

7.45

11.50

12.20

11.60

12.10

Tuning

range

13.50

13.91

kH,

See

Sws

17.40

17.98

See

sw9g

21.40

21.95

Intermediate

freq.

(SW4)

SW5:

11.8MHz

Max.

sens.

(SW5)

SW6:

13.7MHz

(SW8)

SWS:

21.8MHz

(SW9)

SW10:

25.8MHz

(SW1)

SW2:

6.1MHz

Useable

sens.

(SW5)

SWE:

13.7MHz

(SW6)

SW7:

15.3MHz

(SW7)

SW8:

17.8MHz

(SW8)

SW9:

21.8MHz

ie)

(SW9)

SW10:

25.8MHz

Calibration

Image

rejection

eee

Pomemnaee

[ef

Pomowossame

}

(SW4)

SW5:

1:1.8MHz

(SW5)

SWE:

13.7MHz

(SW6)

SW7:

15.3MHz

(SW7)

SW8:

17.8MHz

(SW9)

SW10:

25.8MHz

©.

5SOmWw

Load

ohm

Modulation

1kKHz

30%

Mod.

Tuning

Ind.

sens.

Supply

voitage

Note:

MS-103->SW2-10

MS-103L—>SW1-9

BLOCK

DIAGRAM

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TUNER

ALIGNMENT

INSTRUCTION

SECTION

Tuning

Signal

Generator

87.35+0.15MHz

Adjust

for

Max.

itp

Ant.

terminal

output

Tuning

gang

;

108+0.25

MHz

fully

open

VT4

Adjust

for

Max.

output

TRACKING

cee

SECTION

feseee

S0MHz

Tune

signal

Adjust

for

Max.

output

Circuit

Alignment

Equipment

Connection

Dial

Setting

Adjustments

106MHz

Tune

signal

VT3

Adjust

for

Max.

output

Signal

Generator

460kHz

with

loop

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.1)

Tuning

gang

Signal

Generator

515kHz

fully

closed

Adjust

for

Max.

output

with

loop

Ant.

output

Tuning

gang

BAND

1650kHz

fully

open

VT2

Adjust

for

Max.

output

TRACKING

SECTION

(only

MS-103L)

600kHz

Adjust

for

Max.

output

4400kHz

VT1

Adjust

for

Max.

output

Circuit

Alignment

Equipment

Connection

Signal

Generator

with

loop

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.3)

Signal

Generator

Ant.

terminal

output

meter

(VTVM)

across

ohm

load

(Fig.3)

Tuning

gnag

Adjust

for

Max.

output

fully

closed

meter

(VTVM)

across

ohm

load

(Fig.1)

Signal

Generator

with

loop

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.1)

Tuning

gang

145kHz

Adjust

for

Max.

output

fully

closed

Tuning

gang

285kHz

fully

open

VT5

Adjust

for

Max.

output

hagas

BAND

TRACKING

meter

(VTVM)

across

ohm

load

(Fig.1)

Singal

Generator

with

loop

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.1)

170kHz

Adjust

for

Max.

output

270kHz

Tune

signal

VT6

Adjust

for

Max.

output

ees

Hepeat

SER

saat

Dial

Setting

Adjustments

49M

BAND

SECTION

Signal

Generator

with

12pf

dummy

Ant.

5.85MHz

Tuning

Gang

L16

Adjust

for

output

meter

(VTVM)

(1kHz

Moa)

fully

closed

Max.

output

across

ohm

load

(Fig.2)

Signal

Generator

with

12pf

dummy

Ant.

6.1MHz

Adjust

for

TRACKING

output

meter

(VTVM)

(1KHz

Mod)

Max.

output

across

ohm

load

(Fig.2)

41M

BAND

SECTION

Circuit

Alignment

Equipment

Connection

Signal

Generator

with

12pf

dummy

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.2)

Signal

Generator

with

12pf

dummy

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.2)

Dial

Setting

Adjustments

L17

Adjust

for

Max.

output

Tuning

Gang

fully

closed

7.05MHz

(1kHz

Mod)

Adjust

for

Max.

output

7.3MHz

(1kHz

Moa)

TRACKING

31M

BAND

SECTION

Circuit

Alignment

Equipment

Connection

step

Gen. Freq

Dial

Setting

Adjustments

Signal

Generator

with

12pf

dummy

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.2)

Signal

Generator

with

12pf

dummy

Ant.

output

meter

(VTVM)

across

ohm

load

(Fig.2)

L18

Adjust

for

Max.

output

9.45MHz

(1kKHz

Mod)

Tuning

Gang

fully

closed

Adjust

for

Max.

output

Tune

signal

9.7MHz

(1kHz

Mog)

TRACKING

Signal

Generator

with

12pf

dummy

Ant.

11.60MHz

Tuning

Gang

L19

Adjust

for

output

meter

(VTVM)

(1kHz

Mod)

fully

closed

Max.

output

across

ohm

load

(Fig.2)

Signal

Generator

with

12pf

dummy

Ant.

11.80MHz

Tune

L10

Adjust

for

TRACKING

output

meter

(VTVM)

(1kHz

Mod)

signal

Max.

output

across

ohm

load

(Fig.2)

ATONE

Dah

NEDA

RARE

SADR

ASAIN

EARS

alienate

AOC

NBL

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