ELECRAFT K 2 manuels

Elecraft K 2 Manuel du propriétaire (159 pages)

marque: Elecraft | Catégorie: Composants de châssis | Taille: 1.00 MB |

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Table des matières

ELECRAFT K2

1

Table of Contents

2

1. Introduction

4

2. Specifications

6

Transmitter

7

Receiver

7

Keying modes Iambic A and B

8

3. Preparation for Assembly

9

Unpacking

10

Assembly Notes

11

Identifying Capacitors

12

Color Code

12

Resistor Color Code

13

Integrated Circuits and ESD

14

4. Control Board

15

Assembly

16

Bend pins

20

Straight

22

Visual Inspection

23

Resistance Checks

23

5. Front Panel Board

24

__ R14, 100k (BRN-BLK-YEL)

25

Polarizing

27

Square Keycap

29

Gray keycaps

29

Uninstalled Components

30

Front Panel Final Assembly

32

Tighten both set screws

35

6. RF Board

36

Assembly, Part I

37

__ R113, 82 (GRY-RED-BLK)

38

Front edge of

40

PC Board

40

Left Side Panel

41

Long-handled

44

Alignment and Test, Part 1

45

Optical Encoder Test

46

Relay Test

46

Menu Tutorial

47

S-Meter Alignment

51

Bargraph Current Test

51

Assembly, Part II

52

Remove insulation

57

Alignment and Test, Part II

64

BFO Test

65

BFO Alignment

66

VFO Linearization

66

Assembly, Part III

68

Alignment and Test, Part III

76

VFO Linearization (All Bands)

78

Transmitter Alignment

79

7. Final Assembly

80

Hole Covers

81

Finishing Touches

81

8. Operation

83

K2 REAR PANEL

84

Connections

85

Controls and Display

87

Potentiometers

88

Switch Functions

89

Numeric Keypad

89

Using the Menu

90

Calibration Functions

91

Filter Settings (CAL FIL)

92

VFO Linearization (CAL PLL)

96

S-meter Zero Level (CAL S LO)

96

Basic K2 Operation

97

Tuning Rates and VFO Lock

100

Mode Selection

100

Filter Selection

100

Power Control

101

VFO Selection

101

Split and Reverse Operation

101

CW Operation

102

Keying Device Selection

103

Basic CW Setup

103

The SPOT Switch

103

Using the Internal Keyer

104

Message Memories

104

CW Reverse

104

SSB Operation

105

Advanced Operating Features

106

AGC On/Off Control

110

9. Modifications

112

10.Theory of Operation

113

Microcontroller (MCU)

114

Latching Relays

114

Front Panel

115

Control Board

116

RF Board

118

Receiver (100-149)

124

Transmitter (150-199)

126

12. Internal Options

128

©1999 Elecraft

153

RF Output Detector

157

K2 RF Board

157

Elecraft

157

1 6 0 m /

157

R X A n t

157

Power Amplifier (PA)

158

Pre-Driver

158

4.915MHz

159

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