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Ramsey Electronics
manual FR146 PARTS LAYOUT DIAGRAM
Models:
FR146
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9
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Troubleshooting
Install
Parts list
FR146 BLOCK DIAGRAM
Semiconductor Replacement Data
Warranty
RAMSEY “Learn-As-You-Build”KIT ASSEMBLY
Alignment Procedure
Adding An Led Power On Indicator
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FR146 PARTS LAYOUT DIAGRAM
FR146 • 9
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Contents
2 METER FM RECEIVER KIT
Ramsey Electronics Model No
FR146
PARTIAL LIST OF AVAILABLE KITS
TABLE OF CONTENTS
FR146 2 METER FM RECEIVER KIT
KIT ASSEMBLY
BUILDING YOUR FR146 KIT
INTRODUCTION TO THE FR146 FM RECEIVER
FR146 CIRCUIT DESCRIPTION
Semiconductors and ICs
PARTS LIST Inductors
Special Components
Fixed Resistors
Controls and Hardware
SEMICONDUCTOR REPLACEMENT DATA
REQUIRED, NOT SUPPLIED
NOTE CONCERNING THE AUDIO OUTPUT JACK
FR146 BLOCK DIAGRAM
U1 SA602 MIXER
FR146
FR146
FR146 PARTS LAYOUT DIAGRAM
Now, lets start building
RAMSEY “Learn-As-You-Build”KIT ASSEMBLY
FURTHER COMPONENT INSTALLATION
2. SA602 OSCILLATOR-MIXERand VARACTOR TUNING
1. ANTENNA INPUT AND TUNED RF PREAMPLIFIER
FR146
FR146
21. Install C8, .001 uF marked .001, 102, or 1 nF
PROGRESS SUMMARY
4. MC3359 FM IC and ASSOCIATED COMPONENTS
5. FINAL CONNECTIONS THE LM386 AUDIO IC STAGE
ALIGNMENT PROCEDURE
TESTING, ALIGNMENT AND ADJUSTMENT
RECEIVER SENSITIVITY
ADDING AN LED POWER ON INDICATOR
OTHER ENCLOSURE RECOMMENDATIONS
SOME NOTES FOR ADVANCED USERS
FR146 TROUBLESHOOTING HINTS
hearing about significant performance improvements, we do not recommend casual modification attempts
The Ramsey Kit Warranty
FR146
3.FACTORY REPAIR OF ASSEMBLED KITS
RAMSEY MODEL NO. FR146 2 METER FM RECEIVER KIT
ESTIMATED ASSEMBLY
REQUIRED TOOLS
TOTAL SOLDER POINTS
