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SB-104
Heathkit SB-104 User Manual
166 pages
Manual
Specs
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2
Table of Contents
Table of Contents
4
Test and Adjustments
5
Fixed Station Installation
31
Mobile Station Installation
33
Operation
43
Control Functions
43
Tune-Up
45
Receiving
46
Transmitting
47
Troubleshooting
49
Introduction
49
Transmitter Troubleshooting Guide
62
Display Troubleshooting Guide
66
Voltage and Continuity Checks
68
Test Chart
69
Checking Transistors and Diodes
70
Pin-Out Diagrams
72
Identification Charts
75
VFO and Buffer Circuit Boards
79
Converter Circuit Boards
86
Display Circuit Board
88
Counter C~Rcuit Board
91
Hfoipremixer Circuit Board
98
Transmitter Audioireg C~Rcuit Board
104
Circuit Board
104
VFO Filter Circuit Board
118
Carrier Genixtal Filter Circuit Board
126
Theory of Operation
149
Chassis Photographs
151
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Heathkit SB-104 Specifications
General
Power Supply
Internal
Modes
CW, SSB
Power Output
100 Watts
Tuning
VFO
Power Input
240V AC, 50-60Hz
Receiver Sensitivity
0.5 μV for 10 dB S+N/N
IF Frequencies
9 MHz
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