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Ramsey Electronics
HR40 manual
Models:
HR40
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28 pages
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Troubleshooting
Warranty
Receiver Assembly
Tuning Ssb Signals
Bandspread And Tuning Range
INITIAL TESTING OF YOUR HR40
volume control, R3
More Audio Power - Another Way
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HR40
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Contents
40 METER 7.0 MHZ ALL MODE RECEIVER KIT
Small in size but BIG in features
Ramsey Electronics Model No
HR40
RAMSEY TRANSMITTER KITS
KIT ASSEMBLY
TABLE OF CONTENTS
HR40 AMATEUR RECEIVER KIT
RAMSEY HR-SERIESAMATEUR RECEIVERS
INTRODUCTION
ABOUT DIRECT CONVERSION RECEIVERS
Circuit Description
PARTS SUPPLIED WITH THE HR40 KIT
LEARN-AS-YOU-BUILDASSEMBLY STRATEGY
HR40
HR40
PARTS LAYOUT
RECEIVER ASSEMBLY
ˆ18. Install R2, 10k potentiometer tuning control
ˆ17. Install R5, 10k ohms brown-black-orange
ˆ21. Install S1, the power switch
HR40
HR40
INITIAL TESTING OF YOUR HR40
Alignment
TUNING SSB SIGNALS
USING YOUR RECEIVER
CW OPERATION
ON THE AIR TRANS-RECEIVING
MORE AUDIO POWER - ANOTHER WAY
ADDING AN LED POWER ON INDICATOR
SPEAKER OPERATION
HR40
TROUBLESHOOTING TIPS
ALTERNATE POWER SOURCES
BANDSPREAD AND TUNING RANGE
GENERAL NOTES FOR EXPERIENCED QRP BUILDERS
FREQUENCY STABILITY
OTHER METHODS OF DIAL CALIBRATION
DIRECT FREQUENCY READOUT
THE LM386 AUDIO OUTPUT
volume control, R3
HR40
CONSTRUCTION NOTES
HR40
HR40
The Ramsey Kit Warranty
3. FACTORY REPAIR OF ASSEMBLED KITS
RAMSEY MODEL NO. HR40 AMATEUR RECEIVER KIT
