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HR20 Parts Layout Diagram
Models:
HR20
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10
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Troubleshooting
HR20 Parts Layout Diagram
Tuning SSB Signals
Warranty
Receiver Assembly
Bandspread and Tuning Range
Initial Testing of Your HR20
More Audio Power Another WAY
ALL Mode Receiver KIT
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HR20 PARTS LAYOUT DIAGRAM
HR20• 10
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Contents
ALL Mode Receiver KIT
Partial List of Available Kits Ramsey Transmitter Kits
HR20 Amateur Receiver KIT
Introduction
Ramsey HR-SERIES Amateur Receivers
About Direct Conversion Receivers
Circuit Description
Capacitors
Parts Supplied with the HR20 KIT
LEARN-AS-YOU-BUILD Receiver Assembly Strategy
HR20
HR20 Parts Layout Diagram
Receiver Assembly
HR20
HR20
Initial Testing of Your HR20
Required for Initial Testing and Alignment
Alignment
Alignment Hint for ALL Direct Conversion Receivers
CW Operation
Using Your Receiver
Tuning SSB Signals
On the AIR TRANS-RECEIVING
Speaker Operation
More Audio Power Another WAY
Adding AN LED Power on Indicator
Troubleshooting Tips
Alternate Power Sources
General Notes for Experienced QRP Builders
Bandspread and Tuning Range
Other Methods of Dial Calibration
Frequency Stability
Direct Frequency Readout
LM386 Audio Output
HR20
Construction Notes
Ramsey Kit Warranty
Factory Repair of Assembled Kits
Required Tools
Total Solder Points Estimated Assembly Time
HR20 Amateur Receiver KIT
Additional Suggested Items
