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Potomac Instruments Field Strength Meter FIM-21
Instruction manual
Field Strength Meter
FIM-21
English text, 42 pages, grayscale scans
TABLE CONTENTS
SECTION 1. GENERAL DESCRIPTION
1.1 Scope of Manual
1.2 Purpose of Equipment
1.3 Equipment Specifications
SECTION 2. OPERATION
2.1 General
2.2 Operating Controls and Indicators
2.3 FIM Calibration
2.4 Measuring Field Strength
2.5 Measuring Harmonic Ratio in Decibels
2.6 R. F. Bridge Measurements. (Tuned Voltmeter)
SECTION 3. THEORY OF OPERATION
3.1 General
3.2 Block Diagram Description
3.3 Circuit Description
SECTION 4. MAINTENANCE
4.1 General
4.2 Battery Replacement
4.3 Battery Types
4.4 Lamp Replacement
4.5 To Remove FIM from Case
4.6 To Operate the FIM With Case Removed
4.7 IC Replacement
4.8 Preventive Maintenance
4.9 Troubleshooting and Repair
4.10 Recalibration
SECTION 5. SCHEMATIC DIAGRAM
5.1 General
LIST OF ILLUSTRATIONS
Operating Controls and Indicators
Field Strength Meter, Functional Block Diagram
Troubleshooting Voltage Charts
Field Strength Meter, Component Locations
Field Strength Meter, Component Locations
Field Strength Meter, Schematic Diagram
LIST OF TABLES
Specifications: Type FIM-21 Field Strength Meter
Specifications: Type FIM-41 Field Strength Meter
Operating Controls and Indicators
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