Sangean ATS-909X - WORLD BAND RADIOS User manual

ATS-909X
FM / MW / LW / SW
PLL SYNTHESIZED RECEIVER
CONTENTS
Specification 2-6
Main PCB Block Diagram 7
Control PCB Block Diagram 8
Alignment Instructions 9-16
Test Points Diagram 17
Main PCB Top View 18
Main PCB Bottom View 19
Control PCB Top View 20
Control PCB Bottom View 21
Key PCB Top View 22
Key PCB Bottom View 23
Wiring Diagram 24
Troubleshooting Flow Chart 25-28
Electrical Parts List 29-34
Mechanical Parts List 35-36
Exploded Views 37
IC Circuit Block Diagram 38-44
Semiconductor Lead Identifications 45
IC and Transistor Voltage Chart 46-51
Main Schematic Diagram 52
Control Schematic Diagram 53

Specification
FM. ELECTRICAL PERFORMANCE
Mod：ATS-909X(CE) Brand ：
SANGEAN Temp：25∘CR.H. ：
75%Date：
2010/12/21 Ver.：APage：
1/5
Condition Value Test No.
Test Item Input Output freq Nom. Lim. 1. 2. 3. Unit
Min 87.5
±0.05
Tuning Range S/N=6dB Max 108.0 ±0.05 MHz
Intermediate freq. S/N=6dB 10.7
±0.05 MHz
90MHz 16
98MHz 16
Max. Sensitivity S/N=6dB 106MHz 16 dBμ
88MHz 16 22
98MHz 16 22
Usable Sensitivity S/N=30d
B 106MHz 16 22 dBμ
RDS Sensitivity 98MHz 28 dBμ
Image Rejection
dB
I.F. Rejection
dB
3dB Limiting(1mV) 80dBμ20 26 dBμ
Min. output 60dBμ0.6 3 mv
Tuning Ind. Sens. (4 nd.dot) 13 18
Auto. Scan. Stop. Sens. 18 24
Stereo indicator Sens. 18 24 dBμ
Stereo separation (1KHz) 25 20 dB
Spurious rejection 50 dB
S/N Ratio 60dBμ50 44 dB
Alter. Channel Select. 40 dBμR.O. 25 dB
Am. suppression 60dBμ.EMF 30 dB
Output Power 400kHz 10%T.H.D 1 0.8 W
T.H.D.(75KHz dev.) 400/1kHz 2 4 %
Over load capacity 10%T.H.D
98MHz
106 dBμ
Calibration
*Lowest Batt. volt. 60dBμ98MHz 3.9 4.2 V
Audio Fidelity. –3dB
(W/Pre-emphasis) 60dBμTONE.
NORMAL 98MHz 150
8K Hz
60dBμMUSIC 98MHz +7.5 +3
TONE action 10kHz/1kHz
VOLUME AT CENTER
POSITION 60dBμMENS 98MHz -22 -16 dB
Supply Voltage: AC 9 V R. O. : 50 mW Load: 8 Ohm Modulation:400Hz/22.5 Dev.
Remark：
Approved by
蔡宇曙 2010/12/21
Released/Tested by
黃澍寰 2010/12/21
2

Specification
MW ELECTRICAL PERFORMANCE
Model ;ATS-909X(CE
)Brand：
SANGEAN Temp：25∘
CR.H. ：
75%Date：
2010/12/21 Ver.：APage：
2/5
Condition Value Test No.
Test Item Input Output Freq. Nom. Lim. 1. 2. 3. Unit
Min. 520
±1
Tuning Range Max. 1710 ±1 KHz
Intermediate freq. S/N=6 dB 1st IF
2nd IF 55845 450 ±1 KHz
603KHz 58
999KHz 56
Max. Sensitivity S/N=6 dB 1404KHz 56
dBμ/m
603KHz 58 64
999KHz 56 62
Usable Sensitivity S/N=20d
B 1404KHz 56 62
dBμ/m
Image Rejection S/N=6 dB 1404KHz 36 30 dB
I. F. Rejection(450KHz) S/N=6 dB 50 dB
Selectivity(±10KHz) S/N=6 dB 40 dB
Bandwidth (WIDE)6 dB S/N=6 dB 7 4-8 KHz
Bandwidth (NARROW)6 dB S/N=6 dB 4.5 2.5-6 KHz
T. H. D.(5mV) 74 dBμ/m 2 4 %
Lowest Batt. Volt. 74 dBμ/m 3.9 4.2 V
Hum Modulation. 100 dBμ
/m dB
Tuning Ind. Sens.(4nd.dot) 48 54
dBμ/m
Auto. Scan. Stop. Sens. 56 62
dBμ/m
S/N Ratio 74 dBμ/m 32 dB
Current Consumption 74 dBμ/m mA
TONE ACTION(3KHz) 74 dBμ/m NORMAL
/NEWS 10 6 dB
150
Audio fidelity(-6dB)
WIDE 74 dBμ/m
2100 Hz
Output power 74 dBμ/m
400Hz MAX
10%T.H.D 1 0.8 W
Over Load Capacity 30%Mod 10%T.H.D 100
dBμ/m
A. G. C. F. O. M. 100dBμ
/m 50 dB
A. C.A.(. ±10KHz)
999KHz
28 dB
Whistle Modulation(5mV/M) 74 dBμ/m 2IF/3IF 15 %
Supply Voltage:AC9 V R. O. : 50
mW Load: 8 Ohm Modulation:400Hz/30%
Remark：
Approved by
蔡宇曙 2010/12/21
Released/Tested by
黃澍寰 2010/12/21
3

Specification
SW ELECTRICAL PERFORMANCE
Mode：ATS-909X(CE) Brand：
SANGEAN Temp：25∘
CR.H. ：
75%Date：
2010/12/21 Ver.：APage：
3/5
Condition Value Test No.
Test Item Input Output Freq. Nom. Lim. 1. 2. 3. Unit
Min. 1711 ±1K
Tuning Range Max. 29999 ±1K KHz
Intermediate freq. S/N=6Db 1st. IF
2nd. IF 55845
450 ±1 KHz
3900KHz 22
15100KHz 18
Max. Sensitivity S/N=6Db 25600KHz 18
dBμ
3900KHz 22 28
15100KHz 18 24
Usable Sensitivity S/N=20D
b 25600KHz 18 24
dBμ
Calibration
S/N=6Db 3900KHz
15100KHz
25600KHz ±1 KHz
150 Hz
Audio fidelity(-6 Db) 2200 Hz
Selectivity(±10KHz) S/N=6Db 50 Db
Bandwidth (WIDE)6Db S/N=6Db 6 4-8 KHz
Bandwidth (NARROW)6Db S/N=6Db 4.5 3-7 KHz
T. H. D. ( 60 emf dBμ) 2 4 %
A. G. C. F. O. M.( 86 dBμ) 60 Db
Image Rejection 42 36 Db
I. F. Rejection (450KHz) 76 60 Db
Lowest Batt. Volt. 3.9 4.2 V
Hum Modulation (5Mv) Db
Tuning Ind. Sens.(4nd.dot) 18 dBμ
Auto. Scan. Stop. Sens. 10 dBμ
S/N Ratio ( 60 dBμ) 40 Db
Output power MAX
10%T.H.D 1 0.8 W
Over Load Capacity 30%mod. 10%T.H.D 86 80
dBμ
RF Gain Control 28 ±6 Db
SSB/CW sens.(S/N=10Db) -3 +3 dBμ
Freq.Rewponse(-6Db) Hz
A.C.A.( ±10KHz)
15100KHz
28 Db
Whistle Modulation 2IF/3IF %
Supply Voltage:AC 9 V R. O. : 50 Mw Load: 8 Ohm Modulation:400Hz/30% Mod
Remark：
Approved by
蔡宇曙 2010/12/21
Released/Tested by
黃澍寰 2010/12/21
4

Specification
LW ELECTRICAL PERFORMANCE
Model ：
ATS-909X(CE) Brand：
SANGEAN Temp：25∘
CR.H. ：
75%Date：
2010/12/21 Ver.：APage：
4/5
Condition Value Test No.
Test Item Input Output Freq. Nom. Lim. 1. 2. 3. Unit
Min. 100 ±1
Tuning Range Max. 519 ±1 KHz
Intermediate freq. S/N=6dB 1st. IF
2nd. IF 55845 450 ±1
KHz
180KHz 68
216KHz 66
Max. Sensitivity S/N=6dB 279KHz 64
dBμ/m
180KHz 68 74
216KHz 66 72
Usable Sensitivity S/N=20d
B 279KHz 64 70
dBμ/m
Image Rejection 279KHz 30 24 dB
I.F. Rejection 450KHz S/N=6dB 225KHz 50 dB
Selectivity(±10KHz) S/N=6dB 40 dB
Bandwidth -6dB S/N=6dB KHz
T. H. D. ( 5mV ) 74dBμ/m 2 5 %
Lowest Batt. Volt. 74dBμ/m 3.9 4.2 V
Hum Modulation dB
Tuning Ind. Sens.(4nd.dot) 68
dBμ/m
Auto. Scan. Stop. Sens. 72
dBμ/m
S/N Ratio ( 5mV ) 74dBμ/m 20 dB
Current Consumption 74dBμ/m mA
Tone action(3KHz) 74dBμ/m NORMAL
/NEWS dB
Freq.Rewponse(-6dB) 74dBμ/m
150
2.1 Hz
KHz
Output power 74dBμ/m
1KHz MAX
10%T.H.D 1 0.8 W
Over Load Capacity 30%mod. 10%T.H.D 106
dBμ/m
A. G. C. F. O. M. 100dBμ/m
216KHz
dB
Calibration
S/N=6dB 180KHz
225KHz
279KHz ±1 KHz
Whistle Modulation 2IF/3IF %
Supply Voltage:AC 9 V R. O. : 50 mW Load: 8 Ohm Modulation:400Hz/30% Mod
Remark：
Approved by
蔡宇曙 2010/12/21
Released/Tested by
黃澍寰 2010/12/21
5

Specification
AUX-IN ELECTRICAL PERFORMANCE
Mode ：
ATS-909X(FCC) Brand：
SANGEAN Temp：25∘
CR.H. ：
75%Date：
2010/12/21 Ver.：APage：
5/5
Condition Value Test No.
Test Item Input Output Freq. Nom. Lim. 1. 2. 3. Unit
Output Power AUX IN=0.5V/400Hz
THD=10% 1500 1000 mW
AUX IN
Dynamic Range
Output=R.0
THD=3%
AUX IN=400Hz 1.5 1 V
I/S (Input Sensitivity) AUX IN=400Hz OUT= 0.5W
Volume=MAX 150 ±50 mV
DISTORTION AUX IN =I/S 400Hz
OUT=R.O 0.5 1 %
MIN OUTPUT AUX IN =I/S 400Hz
Volume=MIN 1 3 mV
S/N RATIO AUX IN =I/S 400Hz&GND
OUT=R.O 56 50 dB
100Hz 0 ±2
Frequency Response AUX
IN=0.15V/1KHz
OUT=50mW=0dB 10KHz 0 ±3 dB
LINE OUT LEVEL
(REC OUT IMPD=10K) AUX IN =I/S 400Hz 150 ±80 mV
Supply Voltage:
Adaptor AC 9V
R.O.: 50mW Load: 8 Ohm
Remark：Approved by
蔡宇曙 2010/12/21
Released/Tested by
黃澍寰 2010/12/21
6

9G
D2
D36
SWITCH
SWITCH
9G
9G
ANT1
2
1
CN3
6V
BT
SP1
RADIO 3V D30
NI-MH
MAIN PCB BLOCK DIAGRAM
7

9G
2
1
W501
2
1
W201
X302
32.768KHz
2
1
CN3
X301
4.332MHz
2 1
W305
2 1
W304
RADIO 3.3V
CONTROL PCB BLOCK DIAGRAM
8

ALIGNMENT INSTRUCTIONS
(1) ALIGNMENT FOR 452KHZ / 448KHZ OSCILLATOR
a. Required Instrument
Frequency Counter
b. Alignment Procedure
Setting Procedure
(1) Connect a frequency counter to TP1.
RECEIVING
FREQUENCY 15.1 MHz (2) Turn the radio to ON and set AM mode to “USB”.
BAND SW
(3) Adjust TC1 to have a reading specification frequency 452KHz
AM MODE USB/LSB ±30Hz.
TONE NORM
(4) Set AM mode to “LSB” condition.
RF GAIN MAX. (5) Adjust TC2 to have a reading specification frequency 448KHz
ADJUSTMENT TC1, TC2 ±30Hz.
c. Instrument Connection
TC2TC1
TP1
Frequency Counter
448.00 KHz
9

(2) ALIGNMENT FOR AM 2ND LOCAL OSCILLATOR
a. Required Instrument
RF Signal Generator (RFSG)
Frequency Counter
DVM
b. Alignment Procedure
Setting Procedure
(1) Set RFSG output level to 80 emf/dBµand frequency to 55.845MHz
with modulation 1KHz 30%.
RECEIVING
FREQUENCY 15.1 MHz (2) Turn the radio to ON and set AM mode to “AM”.
BAND SW
(3) Turn the radio receiving frequency to 15.1MHz.
AM MODE LSB (4) Connect RFSG output to ANT IN (TP2).
TONE NORM
(5) Adjust T7 to get 1KHz maximum level output of the speaker.
(6) Change RFSG output frequency to 55.843MHz.
(7) Change AM mode to “LSB” mode.
WIDE / NARR.
MONO WIDE (8) Check TP3 to have a reading on DVM 1.5V ±0.05.
RF GAIN MAX. (9) Set key lock function to ON.
ADJUSTMENT T7 (10) Adjust T7 to get the speaker output tone beat below 50Hz.
c. Instrument Connection
T7
TP8
TP4
SSVM
Frequency Counter
0.000 KHz dBµ
55.845 MHz30%
RF OUT
80
RFSG
TP2
TP5
10

(3) ALIGNMENT FOR AM SENSITIVITY
a. Required Instrument
RF Signal Generator (RFSG)
SSVM
b. Alignment Procedure
Setting Procedure
(1) Turn the radio to ON and tune receiving frequency to 15.1MHz.
RECEIVING
FREQUENCY 15.1 MHz (2) Set RF Gain VR301 to Max. and slide Wide/Narr. switch to WIDE.
BAND SW
(3) Feed a signal with 1KHz 30% modulation from RFSG into ANT IN
AM MODE AM (TP2).
TONE NORM
(4) Adjust T3, T4, T5, T6, T8 to have maximum 1KHz output level on
SSVM.
WIDE / NARR.
MONO WIDE
RF GAIN MAX.
ADJUSTMENT T3, T4, T5,
T6, T8
c. Instrument Connection
T5 T6 T3 T4 T8
TP8
TP4
SSVM
dBµ
30% 15.1 MHz
RF OUT
60
RFSG
TP2
TP5
11

(4) ALIGNMENT FOR 450KHz TRAP
a. Required Instrument
RF Signal Generator (RFSG) With Loop Antenna
SSVM
b. Alignment Procedure
Setting Procedure
(1) Turn the radio to ON and tune receiving frequency to LW 450KHz.
RECEIVING
FREQUENCY 450KHz (2) Feed a 450KHz signal with 1KHz 30% modulation to loop antenna.
BAND LW
(3) Connect a SSVM to speaker output (TP4).
AM MODE AM (4) Adjust T9 to get minimum reading of SSVM.
TONE NORM
WIDE / NARR.
MONO WIDE
RF GAIN MAX.
ADJUSTMENT T9
c. Instrument Connection
T9
TP8
TP4
SSVM
dBµ
30% 450 KHz
RF OUT
106
RFSG
TP5
Loop Antenna
12

(5) ALIGNMENT FOR TIME BASE OF FREQUENCY
a. Required Instrument
RF Signal Generator (RFSG)
Frequency Counter
b. Alignment Procedure
Setting Procedure
(1) Connect a RFSG to ANT IN (TP2) and set frequency to 15.1MHz and
RECEIVING
FREQUENCY 15.1 MHz output to 40 emf/dBµwithout modulation.
BAND SW
(2) Set AM mode to LSB mode and volume turn to maximum.
AM MODE LSB (3) Tune the radio receiving frequency to 15.1MHz by 10 key or tuning
TONE NORM
up/down and set key lock to ON.
(4) Adjust TC301 to get the speaker output tone beat below 50Hz.
WIDE / NARR.
MONO NARR.
RF GAIN MAX.
ADJUSTMENT TC301
c. Instrument Connection
TC301
TP4
SSVM
Frequency Counter
0.000 KHz dBµ
15.1 MHz0%
RFSG
RF OUT
40
TP2
TP5
13

(6) ALIGNMENT FOR USB/LSB FINE TUNING
a. Required Instrument
RF Signal Generator (RFSG)
Frequency Counter
b. Alignment Procedure
Setting Procedure
(1) Turn the radio to on and tune the receiving frequency to 15.1MHz.
RECEIVING
FREQUENCY 15.1 MHz (2) Set the AM mode to “USB” mode.
BAND SW
(3) Set the tuning step to “SLOW”.
AM MODE LSB (4) Connect RFSG to ANT IN (TP2) and set RF output to 15.1MHz 40
TONE NORM
emf/dBµwithout modulation.
(5) Connect a frequency counter to speaker output (TP4).
WIDE / NARR.
MONO NARR. (6) Adjust SVR2 to have a reading of 40Hz ±10Hz increment while
RF GAIN MAX Rotary tuning change the receiving frequency from 15.1MHz to
TUNING STEP SLOW 15.101MHz.
VOLUME CENTER
POSITION
ADJUSTMENT SVR2
c. Instrument Connection
SVR2
TP8
TP4
SSVM
Frequency Counter
0.000 KHz dBµ
0% 15.000 MHz
RFSG
RF OUT
40
TP2
TP5
14

(7) ALIGNMENT FOR TIME BASE OF FREQUENCY
a. Required Instrument
RF Signal Generator (RFSG)
DVM
b. Alignment Procedure
Setting Procedure
(1) Tune the radio to ON.
RECEIVING
FREQUENCY 15.1 MHz (2) Connect the RFSG to ANT IN (TP2) and set frequency to
BAND SW
15.1MHz with 1KHz modulation.
AM MODE AM (3) Connect a DVM to TP6.
TONE NORM
(4) Set RFSG output level to 60 emf/dBµ.
(5) Adjust SVR1 to have reading of 1.50V ~ 1.55V on DVM.
WIDE / NARR.
MONO WIDE
RF GAIN MAX.
ADJUSTMENT SVR1
c. Instrument Connection
SVR1
TP8
TP4
SSVM
dBµ
30% 15.1 MHz
RF OUT
60
RFSG
TP2
TP5
15

(8) ALIGNMENT FOR AM SSB. IF SENSITIVITY
a. Required Instrument
RF Signal Generator (RFSG)
SSVM
b. Alignment Procedure
Setting Procedure
(1) Turn the radio to ON and tune receiving frequency to 15.1MHz.
RECEIVING
FREQUENCY 15.1 MHz (2) Set RF Gain VR301 to Max. and slide Wide/Narr. switch to WIDE.
BAND SW
(3) Feed a signal with 1KHz 30% modulation from RFSG into ANT IN
AM MODE AM (TP2).
TONE NORM
(4) Adjust T1 to have maximum 1KHz output level on SSVM.
WIDE / NARR.
MONO WIDE
RF GAIN MAX
ADJUSTMENT T1
c. Instrument Connection
T1
TP8
TP4
SSVM
6dBµ 30% 15.1 MHz
RFSG
RF OUT TP2
TP5
16

TEST POINTS DIAGRAM
17

MAIN PCB TOP VIEW
18

MAIN PCB BOTTOM VIEW
19

CONTROL PCB TOP VIEW
20