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SB-401
Heathkit SB-401 Manuals
Manuals and User Guides for Heathkit SB-401. We have
2
Heathkit SB-401 manuals available for free PDF download: Assembly Manual
Heathkit SB-401 Assembly Manual (184 pages)
SSB Transmitter
Brand:
Heathkit
| Category:
Transmitter
| Size: 44.78 MB
Table of Contents
Table of Contents
4
Mixer-Bandpass Circuit Board
7
Parts List #1
7
Step-By -Step Assembly
8
Carrier Generator Circuit Board
10
Parts List #2
10
Step-By -Step Assembly
12
CHASSIS PARTS Mounting
15
Parts List
15
Step-By-Step Assembly
18
Parts Mounting-Chassis Bottom
18
Coil Mounting-Chassis Top
25
Parts Mounting-Chassis Top
28
Parts List #4
40
Step-By-Step Assembly
42
Preliminary Wiring-Chassis Top
42
Preliminary Wiring-Chassis Bottom
47
Parts Mounting on Carrier Generator Shield
64
Wiring Carrier Generator Shield to Cha
65
Transformer Wiring
75
Preliminary Wiring-Band Switch
76
Parts List
87
Step-By-Step Assembly
89
Dial Assembly
89
Parts Mounting-Front Panel
94
Wiring Front Panel to Chassis
95
Front Panel Mounting
97
Final Wiring-Chassis Top
98
Final Wiring-Chassis Bottom
101
Initial Test
105
Alignment with
110
8.6 Megahertz Trap
110
Carrier Generator
110
8.6 Megahertz Trap Adjustment
112
Driver
112
Carrier Null Adjustment
113
Neutralizing
114
Final Bias
114
Microphone Connection
119
LMO Adjustment
119
Frequency Shift Adjustment
126
Final Transmitter Adjustment
126
Final Assembl y
127
Meter Readings
132
Reading Transmitter Frequency
132
Operating Conditions
133
Transmitter Operation
133
Operation with S8-303 Receiver
133
Ssb
136
Transmitter Operation Only
136
Cw Tune-Up
137
Ssb Tune-Up
139
Troubleshooting Chart
142
Factory Repair Service
144
Circuit Description
149
Schematic Diagram
149
Frequency Chart
149
VOX Amplifier
150
Tone Oscillator and Tone Amplifier
152
LSB-USB-CW Carrier Generator and Cathode Follower
153
Balanced Modulator
154
Isolation Amplifier
154
Linear Master Oscillator
155
LMO Mixer
156
Heterodyne Oscillator and Heterodyne-Oscillator
156
Amplifier
156
Heterodyne Mixer
156
Driver
159
Final Amplifiers
160
Automatic Level Control
160
Power Supp,Ly
162
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Heathkit SB-401 Assembly Manual (61 pages)
Brand:
Heathkit
| Category:
Amplifier
| Size: 4.19 MB
Table of Contents
Table of Contents
2
Specifications
3
Introduction
4
Circuit Description
4
Power Supply
4
Input Circuit
4
Antenna Change-Over and Cutoff Bias Circuits
5
Metering Circuits
5
Grid
5
REL PWR and SWR
5
Construction Notes
6
Hv
6
Parts List
7
Resistors
7
Other Resistors
7
Capacitors
7
Coil-Chokes-Transformers
8
Diodes-Tubes
8
Insulators-Grommets-Terminal Strips-Sockets
8
Wire-Cable-Sleeving
8
Proper Soldering Techniques
9
Chassis Wiring and Soldering
9
Washers
9
Miscellaneous
9
Circuit Board Wiring and Soldering
11
Step-By-Step Procedure
12
Illustrations
12
Soldering
12
Improper Solder Connections
12
Step-By-Step Assembly
13
Circuit Board Assembly
13
Pictorial 1
13
Parts Mounting-Chassis
14
Detail 2A
14
Detail 2B
14
Detail 2C
14
Detail 2D
15
Detail 2E
15
Detail 2F
15
Detail 2G
16
Detail 2H
16
Detail 2J
16
Detail 2K
17
Detail 2L
17
Parts Mounting-RF Shield
18
Detail 2M
18
Detail 3A
18
Detail 2N
18
Detail 3C
19
Detail 3D
20
Detail 3E
20
Detail 3F
20
Detail 3G
20
Pictorial 4
21
Wiring-RF Shield
21
Detail 4A
22
Detail 4B
22
Pictorial 5
23
Detail 5A
23
Wiring-Chassis Bottom
24
Detail 6A
26
Detail 6B
26
Detail 6C
26
Detail 6D
27
Detail 7A
27
Detail 7B
28
Detail 7C
28
Wiring-SWR Bridge
29
Detail 8A
29
Detail 8B
29
Detail 8C
30
Wiring-Chassis Top
31
Detail 9A
31
Detail 9B
31
Pictorial 9
32
Detail 9C
32
Detail 9D
32
Detail 9E
33
Detail 9F
34
Final Wiring
35
Detail 10A
35
Pictorial 10
36
Pictorial 11
38
Pictorial 12
39
Initial Test
40
Final Assembly
40
Resistance Check
40
Installation
41
Location
41
Power Source
41
Exciter
41
Antenna
42
SWR Measurements
42
Schematic Diagram
44
Operation
45
Meter Readings
45
Operating Procedure
45
In Case of Difficulty
48
Factory Repair Service
49
Hardware
51
Metal Parts
51
Screws
51
Nuts
51
Replacement Parts Price List
52
Controls-Switches
52
Typical Component Types
53
Pictorial 3
54
Schematic of the Heathkit
55
Pictorial 8
56
Pictorial 7
57
Pictorial 6
58
Pictorial 2
59
Parts Pictorial
60
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