DRAKE SPR-4 Specifiche Scaricare il pdf (Pagina 2)

Table of Contents

1.

GENERAL DESCRIPTION

1.1 Features

1.2

Specifications

1

1

2.

INSTALLATION

5

2.1

Unpacking

5

2.2

Location

5

2.3

Power Requirements

5

2.4

Antennas

5

2.5 Speakers

6

2.6

Headphone Operation

6

2.7 Viewing Angle Options

6

2.8 Rear Controls

&

Connectors

6

3.

3.1

3.2

3.3

OPERATION

11

Operating Controls

11

Simplified Operating Procedurel2

Dia1

Calibration

12

4.

PRINCIPLES OF OPERATION

4.1

Loop Amplifier

4.2

R

.F . Amplifier

4.3

First Mixer

4.4

Premixer

4.5

Second Mixer

4.6

1 .F. System

4.7

Detection

Systems

4.8

Audio Amplifier

4.9

AVC System

4.10

S-Meter

14

14

14

14

14

15

15

15

15

16

16

5.

ALIGNM ENT

5.1

Removing Cover

5.2

Trouble Shooting

5.3

Alignment Instructions

19

19

19.

19

6.

ACCESSORIES

24

6.1

SCC-4 Crystal Calibrator

24

6.2

S-NB Noise Blanker

24

6.3

RY-4 Radio Teletype Adaptor

26

6.4

TA-4

Transceive

Adaptor

28

6.5

AVC Alterations

31

6.6

Service Data on Accessories

34

Viewing Angle Options

Fig.

Page

1

Front Pane1 Operating Controls

2

Rear Controls & Connections

3

Block

Diagram

4

Top Alignment Adjustment Points

5

Bottom Alignment Adjustment Points

6

SCC-4 Circuit Board

7

RY-4 Calibration

Connection

to SCC4 8

SCC-4 Schematic Diagram

9

S-NB Circuit Board

10

S-NB Schematic Diagram

11

RY-4 Circuit Board Installation

12

RY-4 Pictorial

Wiring

Diagram

13

RY-4 Circuit Board

14

RY-4 Schematic Diagram

15

TA-4 Circuit Board Installation

16

TA-4 Pictorial

Wiring

Diagram

17

TA-4 Circuit Board

18

TA-4 Schematic Diagram

19

Bottom View

-

Circuit Board

20

Transistor

Lead

Configuration

21

Loop Amplifier Circuit Board

22

RF Amplifier Circuit Board

23

Range Crystal Oscillator CircuitBoard24

Accessory

Crystal Circuit Board

25

Premixer Circuit Board

26

Premixer Output Circuit Board

27

1st Mixer Circuit Board

28

2nd Mixer Circuit Board

29

1st IF Amplifier Circuit Board 30

2nd IF Amplifier Circuit Board

31

S

-Meter

Circuit Board

32

Notch

Filter

Circuit Board

33

50 kHz

Filter

Circuit Board

34

BF0

Circuit Board

35

AM Detector Circuit Board

36

Audio Amplifier Circuit Board

37

Power Supply Circuit Board

38

4

9

10

13

17

18

34

35

35

37

38

39

39

40

41

42

42

44

45

46

49

50

51

52

53

54

55

56

57

58

58

59

59

60

60

61

61

62

Accessory Crystal

Chart

SCC-4

DC/RF

Voltage Chart

S-NB

DC/RF

Voltage

Chart

RY-4

DC Voltage Chart

TA-4

DC Voltage

Chart

SPR-4

DC Voltage Chart

SPR-4

RF Voltage Chart

SPR-4

Schematic Diagram

--

33

--

34

--

36

--

40

--

43

--

47

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48

Fold

Out

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