Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
Heath Manuals
Measuring Instruments
Heathkit SB-644A
Manual
Heath Heathkit SB-644A Manual
Remote vfo
Hide thumbs
Also See for Heathkit SB-644A
:
Schematic diagram
(1 page)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
Table Of Contents
98
page
of
98
Go
/
98
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Unpacking
Assembly Notes
Tools
Soldering
Parts
Resistor Color Code
Capacitors
XTAL OSC/SW Circuit Board
Parts List
Step by Step Assembly
A Good Solder Connection
Poor Solder Connections
Solder Bridges
Variable Frequency Oscillator
Oscillator Circuit Board
Buffer Circuit Board
VFO Enclosure
Chassis
Lamp Assemblies
VFO Drive Assembly
Switch Mounting
Remote Main Switch Wiring
Remote-Crystal Switch Wiring
Chassis Wiring
VFO Cable Preparation
Under Chassis Wiring
Front Panel Assembly
Indicator Lamp Wiring
Cable Preparation
Initial Tests
Tests and Adjustments
VFO Frequency Adjust
VFO Level Adjust
Crystal Level Adjust
Crystal Trimmer Adjustment
Final Assembly
Operation
Variable Frequency Operation
Special Crystal Considerations
Crystal Frequency Operation
Crystal Selection for Net Operation
In Case of Difficulty
Visual Tests
Precautions for Troubleshooting
Troubleshooting Chart
Test Circuit Assembly and Use
Isolation Test - RF Voltmeter
Voltage Charts
VFO Flow Chart
Specifications
Circuit Description
XTAL Oscillator
VFO Switching
Switches
Circuit Board X-RAY Views
Switch Circuit Board
Chassis Photographs
Identification Chart
Illustration Booklet
VFO Parts Pictorial
Chassis Parts Pictorial
Replacement Parts
Repair Service
Advertisement
Quick Links
Download this manual
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Table of Contents
Need help?
Do you have a question about the Heathkit SB-644A and is the answer not in the manual?
Ask a question
Questions and answers
Subscribe to Our Youtube Channel
Related Manuals for Heath Heathkit SB-644A
Accessories Heath Heathkit SB-644A Schematic Diagram
Remote vfo (1 page)
Measuring Instruments Heath EUW-24 Manual
Vacuum tube voltmeter (3 pages)
Measuring Instruments Heath IOM-102-1 Instructions
Modification kit (5 pages)
Related Products for Heath Heathkit SB-644A
Heath Heathkit CS-1
Heath Heathkit ETW-3567
Heath SL-6142-C - Heath - Basic Wireless Plug-In Door Chime
Heath Heathkit SA-2060A
Heath Heathkit SB-104A
Heath Heathkit CO-1
Heath Heathkit DX-35
Heath Heathkit PSA-9
Heath Heathkit IP-17
Heath Heathkit W4-AM
Heath Heathkit HL-2200
Heath HEATHKIT HA8-8
Heath HEATHKIT IC-2009
Heath Heathkit IO-4550
Heath Heathkit TC-1
Heath Zenith
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL
Need help?
Do you have a question about the Heathkit SB-644A and is the answer not in the manual?
Questions and answers